Hello World!
+``` + +Or if you want GitHub-Flavored Markdown: + +```php +require __DIR__ . '/vendor/autoload.php'; + +use League\CommonMark\GithubFlavoredMarkdownConverter; + +$converter = new GithubFlavoredMarkdownConverter(); +echo $converter->convert('# Hello World!'); + +//Hello World!
+``` + +## Using Extensions + +The `CommonMarkConverter` and `GithubFlavoredMarkdownConverter` shown above automatically configure [the environment](/2.3/customization/environment/) for you, but if you want to use [additional extensions](/2.3/customization/extensions/) you'll need to avoid those classes and use the generic `MarkdownConverter` class instead to customize [the environment](/2.3/customization/environment/) with whatever extensions you wish to use: + +```php +require __DIR__ . '/vendor/autoload.php'; + +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\InlinesOnly\InlinesOnlyExtension; +use League\CommonMark\Extension\SmartPunct\SmartPunctExtension; +use League\CommonMark\Extension\Strikethrough\StrikethroughExtension; +use League\CommonMark\MarkdownConverter; + +$environment = new Environment(); + +$environment->addExtension(new InlinesOnlyExtension()); +$environment->addExtension(new SmartPunctExtension()); +$environment->addExtension(new StrikethroughExtension()); + +$converter = new MarkdownConverter($environment); +echo $converter->convert('**Hello World!**'); + +//Hello World!
+``` + +## Configuration + +If you're using the `CommonMarkConverter` or `GithubFlavoredMarkdownConverter` class you can pass configuration options directly into their constructor: + +```php +use League\CommonMark\CommonMarkConverter; +use League\CommonMark\GithubFlavoredMarkdownConverter; + +$converter = new CommonMarkConverter($config); +// or +$converter = new GithubFlavoredMarkdownConverter($config); +``` + +Otherwise, if you’re using `MarkdownConverter` to customize the extensions in your parser, pass the configuration into the `Environment`'s constructor instead: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\InlinesOnly\InlinesOnlyExtension; +use League\CommonMark\MarkdownConverter; + +// Here's where we set the configuration array: +$environment = new Environment($config); + +// TODO: Add any/all the extensions you wish; for example: +$environment->addExtension(new InlinesOnlyExtension()); + +// Go forth and convert you some Markdown! +$converter = new MarkdownConverter($environment); +``` + +See the [configuration section](/2.3/configuration/) for more information on the available configuration options. + +## Supported Character Encodings + +Please note that only UTF-8 and ASCII encodings are supported. If your Markdown uses a different encoding please convert it to UTF-8 before running it through this library. + +## Return Value + +The `convert()` method actually returns an instance of `League\CommonMark\Output\RenderedContentInterface`. You can cast this (implicitly, as shown above, or explicitly) to a `string` or call `getContent()` to get the final HTML output. diff --git a/docs/2.3/changelog.md b/docs/2.3/changelog.md new file mode 100644 index 0000000000..bd8998792b --- /dev/null +++ b/docs/2.3/changelog.md @@ -0,0 +1,22 @@ +--- +layout: default +title: Changelog +description: Important changes made in recent releases +--- + +# Changelog + +All notable changes made in `2.x` releases are shown below. See the [full list of releases](/releases) for the complete changelog. + +{% assign releases = site.github.releases | where_exp: "r", "r.name >= '2.3'" | where_exp: "r", "r.name < '3.0'" %} + +{% for release in releases %} + +## [{{ release.name }}]({{ release.html_url }}) - {{ release.published_at | date: "%Y-%m-%d" }} + +{{ release.body | markdownify }} +{% endfor %} + +## Older Versions + +Please see the [full list of releases](/releases) for the complete changelog. diff --git a/docs/2.3/configuration.md b/docs/2.3/configuration.md new file mode 100644 index 0000000000..479c54d957 --- /dev/null +++ b/docs/2.3/configuration.md @@ -0,0 +1,93 @@ +--- +layout: default +title: Configuration +--- + +# Configuration + +Many aspects of this library's behavior can be tweaked using configuration options. + +You can provide an array of configuration options to the `Environment` or converter classes when creating them: + +```php +$config = [ + 'renderer' => [ + 'block_separator' => "\n", + 'inner_separator' => "\n", + 'soft_break' => "\n", + ], + 'commonmark' => [ + 'enable_em' => true, + 'enable_strong' => true, + 'use_asterisk' => true, + 'use_underscore' => true, + 'unordered_list_markers' => ['-', '*', '+'], + ], + 'html_input' => 'escape', + 'allow_unsafe_links' => false, + 'max_nesting_level' => PHP_INT_MAX, + 'slug_normalizer' => [ + 'max_length' => 255, + ], +]; +``` + +If you're using the basic `CommonMarkConverter` or `GithubFlavoredMarkdown` classes, simply pass the configuration array into the constructor: + +```php +use League\CommonMark\CommonMarkConverter; +use League\CommonMark\GithubFlavoredMarkdownConverter; + +$converter = new CommonMarkConverter($config); +// or +$converter = new GithubFlavoredMarkdownConverter($config); +``` + +Otherwise, if you're using `MarkdownConverter` to customize the extensions in your parser, pass the configuration into the [Environment](/2.3/customization/environment/)'s constructor instead: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\InlinesOnly\InlinesOnlyExtension; +use League\CommonMark\MarkdownConverter; + +// Here's where we set the configuration array: +$environment = new Environment($config); + +// TODO: Add any/all the extensions you wish; for example: +$environment->addExtension(new InlinesOnlyExtension()); + +// Go forth and convert you some Markdown! +$converter = new MarkdownConverter($environment); +``` + +Here's a list of the core configuration options available: + +- `renderer` - Array of options for rendering HTML + - `block_separator` - String to use for separating renderer block elements + - `inner_separator` - String to use for separating inner block contents + - `soft_break` - String to use for rendering soft breaks +- `html_input` - How to handle HTML input. Set this option to one of the following strings: + - `strip` - Strip all HTML (equivalent to `'safe' => true`) + - `allow` - Allow all HTML input as-is (default value; equivalent to `'safe' => false) + - `escape` - Escape all HTML +- `allow_unsafe_links` - Remove risky link and image URLs by setting this to `false` (default: `true`) +- `max_nesting_level` - The maximum nesting level for blocks (default: `PHP_INT_MAX`). Setting this to a positive integer can help protect against long parse times and/or segfaults if blocks are too deeply-nested. +- `slug_normalizer` - Array of options for configuring how URL-safe slugs are created; see [the slug normalizer docs](/2.3/customization/slug-normalizer/#configuration) for more details + - `instance` - An alternative normalizer to use (defaults to the included `SlugNormalizer`) + - `max_length` - Limits the size of generated slugs (defaults to 255 characters) + - `unique` - Controls whether slugs should be unique per `'document'` (default) or per `'environment'`; can be disabled with `false` + +Additional configuration options are available for most of the [available extensions](/2.3/customization/extensions/) - refer to their individual documentation for more details. For example, the CommonMark core extension offers these additional options: + +- `commonmark` - Array of options for configuring the CommonMark core extension: + - `enable_em` - Disable `` parsing by setting to `false`; enable with `true` (default: `true`) + - `enable_strong` - Disable `` parsing by setting to `false`; enable with `true` (default: `true`) + - `use_asterisk` - Disable parsing of `*` for emphasis by setting to `false`; enable with `true` (default: `true`) + - `use_underscore` - Disable parsing of `_` for emphasis by setting to `false`; enable with `true` (default: `true`) + - `unordered_list_markers` - Array of characters that can be used to indicate a bulleted list (default: `["-", "*", "+"]`) + +## Environment + +The configuration is ultimately passed to (and managed via) the `Environment`. If you're creating your own `Environment`, simply pass your config array into its constructor instead. + +[Learn more about customizing the Environment](/2.3/customization/environment/) diff --git a/docs/2.3/customization/abstract-syntax-tree.md b/docs/2.3/customization/abstract-syntax-tree.md new file mode 100644 index 0000000000..595e10016f --- /dev/null +++ b/docs/2.3/customization/abstract-syntax-tree.md @@ -0,0 +1,256 @@ +--- +layout: default +title: Abstract Syntax Tree +description: Using the Abstract Syntax Tree (AST) to manipulate the parsed content +--- + +# Abstract Syntax Tree + +This library uses a doubly-linked list Abstract Syntax Tree (AST) to represent the parsed block and inline elements. All such elements extend from the `Node` class. + +## `Document` + +The root node of the AST will always be a `Document` object. You can obtain this node a few different ways: + +- By calling the `parse()` method on the `MarkdownParser` +- By calling the `getDocument()` method on either the `DocumentPreParsedEvent` or `DocumentParsedEvent` [see the (Event Dispatcher documentation](/2.3/customization/event-dispatcher/)) + +## Visualization + +Even with an interactive debugger it can be tricky to view an entire tree at once. Consider using the [`XmlRenderer`](/2.3/xml/) to provide a simple text-based representation of the AST for debugging purposes. + +## Node Traversal + +There are four different ways to traverse/iterate the Nodes within the AST: + +| Method | Pros | Cons | +| --- | --- | --- | +| Manual Traversal | Best way to access/check direct relatives of nodes | Not useful for iteration | +| Iterating the Tree | Fast and efficient | Possible unexpected behavior when adding/removing sibling nodes while iterating | +| Walking the Tree | Full control over iteration | Up to twice as slow as iteration; adding/removing nodes while iterating can lead to weird behaviors | +| Querying Nodes | Easier to write and understand; no weird behaviors | Not memory efficient | + +Each is described in more detail below + +### Manual Traversal + +The following methods can be used to manually traverse from one `Node` to any of its direct relatives: + +- `previous()` +- `next()` +- `parent()` +- `firstChild()` +- `lastChild()` +- `children()` + +This is best suited for situations when you need to know information about those relatives. + +### Iterating the Tree + +If you'd like to iterate through all the nodes, use the `iterator()` method to obtain an iterator that will loop through each node in the tree (using pre-order traversal): + +```php +foreach ($document->iterator() as $node) { + echo 'Current node: ' . get_class($node) . "\n"; +} +``` + +Given an AST like this (XML representation): + +```xml ++ My two favorite sites are + https://google.com + and + https://commonmark.thephpleague.com +
+``` diff --git a/docs/2.3/customization/extensions.md b/docs/2.3/customization/extensions.md new file mode 100644 index 0000000000..9c15c0b3ea --- /dev/null +++ b/docs/2.3/customization/extensions.md @@ -0,0 +1,43 @@ +--- +layout: default +title: Extensions +description: Creating custom extensions to add new syntax and other custom functionality +--- + +# Extensions + +Extensions provide a way to group related parsers, renderers, etc. together with pre-defined priorities, configuration settings, etc. They are perfect for distributing your customizations as reusable, open-source packages that others can plug into their own projects! + +To create an extension, simply create a new class implementing `ExtensionInterface`. This has a single method where you're given a `ConfigurableEnvironmentInterface` to register whatever things you need to. For example: + +```php +use League\CommonMark\Extension\ExtensionInterface; +use League\CommonMark\Environment\ConfigurableEnvironmentInterface; + +final class EmojiExtension implements ExtensionInterface +{ + public function register(ConfigurableEnvironmentInterface $environment): void + { + $environment + // TODO: Create the EmojiParser, Emoji, and EmojiRenderer classes + ->addInlineParser(new EmojiParser(), 20) + ->addInlineRenderer(Emoji::class, new EmojiRenderer(), 0) + ; + } +} +``` + +To hook up your new extension to the `Environment`, simply do this: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\MarkdownConverter; + +$environment = new Environment(); +$environment->addExtension(new CommonMarkCoreExtension()); +$environment->addExtension(new EmojiExtension()); + +$converter = new MarkdownConverter($environment); +echo $converter->convert('Hello! :wave:'); +``` diff --git a/docs/2.3/customization/inline-parsing.md b/docs/2.3/customization/inline-parsing.md new file mode 100644 index 0000000000..6f23a1a9a7 --- /dev/null +++ b/docs/2.3/customization/inline-parsing.md @@ -0,0 +1,179 @@ +--- +layout: default +title: Inline Parsing +description: Parsing inline elements with a custom parser +--- + +# Inline Parsing + +There are two ways to implement custom inline syntax: + +- Inline Parsers (covered here) +- [Delimiter Processors](/2.3/customization/delimiter-processing/) + +The difference between normal inlines and delimiter-run-based inlines is subtle but important to understand. In a nutshell, delimiter-run-based inlines: + +- Are denoted by "wrapping" text with one or more characters before **and** after those inner contents +- Can contain other delimiter runs or inlines inside of them + +An example of this would be emphasis: + +```markdown +This is an example of **emphasis**. Note how the text is *wrapped* with the same character(s) before and after. +``` + +If your syntax looks like that, consider using a [delimiter processor](/2.3/customization/delimiter-processing/) instead. Otherwise, an inline parser is your best bet. + +## Implementing Inline Parsers + +Inline parsers should implement `InlineParserInterface` and the following two methods: + +### getMatchDefinition() + +This method should return an instance of `InlineParserMatch` which defines the text the parser is looking for. Examples of this might be something like: + +```php +use League\CommonMark\Parser\Inline\InlineParserMatch; + +InlineParserMatch::string('@'); // Match any '@' characters found in the text +InlineParserMatch::string('foo'); // Match the text 'foo' (case insensitive) + +InlineParserMatch::oneOf('@', '!'); // Match either character +InlineParserMatch::oneOf('http://', 'https://'); // Match either string + +InlineParserMatch::regex('\d+'); // Match the regular expression (omit the regex delimiters and any flags) +``` + +Once a match is found, the `parse()` method below may be called. + +### parse() + +This method will be called if both conditions are met: + +1. The engine has found at a matching string in the current line; and, +2. No other inline parsers with a [higher priority](/2.3/customization/environment/#addinlineparser) have successfully parsed the text at this point in the line + +#### Parameters + +- `InlineParserContext $inlineContext` - Encapsulates the current state of the inline parser - see more information below. + +##### InlineParserContext + +This class has several useful methods: + +- `getContainer()` - Returns the current container block the inline text was found in. You'll almost always call `$inlineContext->getContainer()->appendChild(...)` to add the parsed inline text inside that block. +- `getReferenceMap()` - Returns the document's reference map +- `getCursor()` - Returns the current [`Cursor`](/2.3/customization/cursor/) used to parse the current line. (Note that the cursor will be positioned **before** the matched text, so you must advance it yourself if you determine it's a valid match) +- `getDelimiterStack()` - Returns the current delimiter stack. Only used in advanced use cases. +- `getFullMatch()` - Returns the full string that matched you `InlineParserMatch` definition +- `getFullMatchLength()` - Returns the length of the full match - useful for advancing the cursor +- `getSubMatches()` - If your `InlineParserMatch` used a regular expression with capture groups, this will return the text matches by those groups. +- `getMatches()` - Returns an array where index `0` is the "full match", plus any sub-matches. It basically simulates `preg_match()`'s behavior. + +#### Return value + +`parse()` should return `false` if it's unable to handle the text at the current position for any reason. Other parsers will then have a chance to try parsing that text. If all registered parsers return false, the text will be added as plain text. + +Returning `true` tells the engine that you've successfully parsed the character (and related ones after it). It is your responsibility to: + +1. Advance the cursor to the end of the parsed/matched text +2. Add the parsed inline to the container (`$inlineContext->getContainer()->appendChild(...)`) + +## Inline Parser Examples + +### Example 1 - Twitter Handles + +Let's say you wanted to autolink Twitter handles without using the link syntax. This could be accomplished by registering a new inline parser to handle the `@` character: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\CommonMark\Node\Inline\Link; +use League\CommonMark\Parser\Inline\InlineParserInterface; +use League\CommonMark\Parser\Inline\InlineParserMatch; +use League\CommonMark\Parser\InlineParserContext; + +class TwitterHandleParser implements InlineParserInterface +{ + public function getMatchDefinition(): InlineParserMatch + { + return InlineParserMatch::regex('@([A-Za-z0-9_]{1,15}(?!\w))'); + } + + public function parse(InlineParserContext $inlineContext): bool + { + $cursor = $inlineContext->getCursor(); + // The @ symbol must not have any other characters immediately prior + $previousChar = $cursor->peek(-1); + if ($previousChar !== null && $previousChar !== ' ') { + // peek() doesn't modify the cursor, so no need to restore state first + return false; + } + + // This seems to be a valid match + // Advance the cursor to the end of the match + $cursor->advanceBy($inlineContext->getFullMatchLength()); + + // Grab the Twitter handle + [$handle] = $inlineContext->getSubMatches(); + $profileUrl = 'https://twitter.com/' . $handle; + $inlineContext->getContainer()->appendChild(new Link($profileUrl, '@' . $handle)); + return true; + } +} + +// And here's how to hook it up: + +$environment = new Environment(); +$environment->addExtension(new CommonMarkCoreExtension()); +$environment->addInlineParser(new TwitterHandleParser()); +``` + +### Example 2 - Emoticons + +Let's say you want to automatically convert smilies (or "frownies") to emoticon images. This is incredibly easy with an inline parser: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\Node\Inline\Image; +use League\CommonMark\Parser\Inline\InlineParserInterface; +use League\CommonMark\Parser\Inline\InlineParserMatch; +use League\CommonMark\Parser\InlineParserContext; + +class SmilieParser implements InlineParserInterface +{ + public function getMatchDefinition(): InlineParserMatch + { + return InlineParserMatch::oneOf(':)', ':('); + } + + public function parse(InlineParserContext $inlineContext): bool + { + $cursor = $inlineContext->getCursor(); + + // Advance the cursor past the 2 matched chars since we're able to parse them successfully + $cursor->advanceBy(2); + + // Add the corresponding image + if ($inlineContext->getFullMatch() === ':)') { + $inlineContext->getContainer()->appendChild(new Image('/img/happy.png')); + } elseif ($inlineContext->getFullMatch() === ':(') { + $inlineContext->getContainer()->appendChild(new Image('/img/sad.png')); + } + + return true; + } +} + +$environment = new Environment(); +$environment->addExtension(new CommonMarkCoreExtension()); +$environment->addInlineParser(new SmilieParserParser()); +``` + +## Tips + +- For best performance: + - Avoid using overly-complex regular expressions in `getMatchDefinition()` - use the simplest regex you can and have `parse()` do the heavier validation + - Have your `parse()` method `return false` **as soon as possible**. +- You can `peek()` without modifying the cursor state. This makes it useful for validating nearby characters as it's quick and you can bail without needed to restore state. +- You can look at (and modify) any part of the AST if needed (via `$inlineContext->getContainer()`). diff --git a/docs/2.3/customization/overview.md b/docs/2.3/customization/overview.md new file mode 100644 index 0000000000..77e5d41cab --- /dev/null +++ b/docs/2.3/customization/overview.md @@ -0,0 +1,74 @@ +--- +layout: default +title: Customization Overview +description: An overview of the powerful customization features +--- + +# Customization Overview + +Ready to go beyond the basics of converting Markdown to HTML? This page describes some of the more advanced things you can customize this library to do. + +## Parsing and Rendering + +The actual process of converting Markdown to HTML has several steps: + + 1. Create an [`Environment`](/2.3/customization/environment/), adding whichever extensions/parser/renders/configuration you need + 2. Instantiate a `MarkdownParser` and `HtmlRenderer` using that `Environment` + 3. Use the `MarkdownParser` to parse the Markdown input into an [Abstract Syntax Tree](/2.3/customization/abstract-syntax-tree/) (aka an "AST") + 4. Use the `HtmlRenderer` to convert the [AST `Document`](/2.3/customization/abstract-syntax-tree/#document) into HTML + +The `MarkdownConverter` class handles all of this for you, but you can execute that process yourself if you wish: + +```php +use League\CommonMark\Parser\MarkdownParser; +use League\CommonMark\Environment\Environment; +use League\CommonMark\Renderer\HtmlRenderer; + +$environment = new Environment([ + 'html_input' => 'strip', +]); +$environment->addExtension(new CommonMarkCoreExtension()); + +$parser = new MarkdownParser($environment); +$htmlRenderer = new HtmlRenderer($environment); + +$markdown = '# Hello World!'; + +$document = $parser->parse($markdown); +echo $htmlRenderer->renderDocument($document); + +//Hello World!
+``` + +Feel free to swap out different components or add your own steps in between. However, the best way to customize this library is to [create your own extensions](/2.3/customization/extensions/) which hook into the parsing and rendering steps - continue reading to see which kinds of extension points are available to you. + +## Add Custom Syntax with Parsers + +Parsers examine the Markdown input and produce an abstract syntax tree (AST) of the document's structure. +This resulting AST contains both blocks (structural elements like paragraphs, lists, headers, etc) and inlines (words, spaces, links, emphasis, etc). + +There are two main types of parsers: + +- [Block parsers](/2.3/customization/block-parsing/) +- [Inline parsers](/2.3/customization/inline-parsing/) + +The parsing approach is identical for both types - examine text at the current position (via the [`Cursor`](/2.3/customization/cursor/)) and determine if you can handle it; +if so, create the corresponding AST element, +otherwise you abort and the engine will try other parsers. If no parser succeeds then the current text is treated as plain text. + +Simple delimiter-based inlines (like emphasis, strikethrough, etc.) can be parsed without needing a dedicated inline parser by leveraging the new [Delimiter Processing](/2.3/customization/delimiter-processing/) functionality. + +## AST manipulation + +Once the [Abstract Syntax Tree](/2.3/customization/abstract-syntax-tree/) is parsed, you are free to access/manipulate it as needed before it's passed into the rendering engine. + +## Customize HTML Output with Custom Renderers + +[Renderers](/2.3/customization/rendering/) convert the parsed blocks/inlines from the AST representation into HTML. When registering these with the environment, you must tell it which block/inline classes it should handle. This allows you to essentially "swap out" built-in renderers with your own. + +## Examples + +Some examples of what's possible: + +- [Parse Twitter handles into profile links](/2.3/customization/inline-parsing#example-1---twitter-handles) +- [Convert smilies into emoticon images](/2.3/customization/inline-parsing#example-2---emoticons) diff --git a/docs/2.3/customization/rendering.md b/docs/2.3/customization/rendering.md new file mode 100644 index 0000000000..3c48a49355 --- /dev/null +++ b/docs/2.3/customization/rendering.md @@ -0,0 +1,143 @@ +--- +layout: default +title: Rendering +description: How to customize the rendering of block and inline elements +--- + +# Custom Rendering + +Renderers are responsible for converting the parsed AST elements into their HTML representation. + +All block renderers should implement `NodeRendererInterface` and its `render()` method. Note that in v2.0, both +block renderers and inline renderers share the same interface and method: + +## render() + +```php +public function render(Node $node, ChildNodeRendererInterface $childRenderer); +``` + +The `HtmlRenderer` will call this method during the rendering process whenever a supported element is encountered. + +If your renderer can only handle certain block types, be sure to verify that you've been passed the correct type. + +### Parameters + +- `Node $node` - The encountered block or inline element that needs to be rendered +- `ChildNodeRendererInterface $childRenderer` - If the given $node has children, use this to render those child elements + +### Return value + +The method must return the final HTML representation of the node and its contents, including any children. This can be an `HtmlElement` object (preferred; castable to a string), a string of raw HTML, or `null` if it could not render (and perhaps another renderer should give it a try). + +If you choose to return an HTML `string` you are responsible for handling any escaping that may be necessary. + +#### `HtmlElement` + +Instead of manually building the HTML output yourself, you can leverage the `HtmlElement` to generate that for you. For example: + +```php +use League\CommonMark\Util\HtmlElement; + +$link = new HtmlElement('a', ['href' => 'https://github.com'], 'GitHub'); +$img = new HtmlElement('img', ['src' => 'logo.jpg'], '', true); +``` + +## Designating Renderers + +When registering your renderer, you must tell the `Environment` which node element class your renderer should handle. For example: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\CommonMark\Node\Block\FencedCode; + +$environment = new Environment(); +$environment->addExtension(new CommonMarkCoreExtension()); + +// First param - the node class type that should use our renderer +// Second param - instance of the renderer +$environment->addRenderer(FencedCode::class, new MyCustomCodeRenderer()); +``` + +A single renderer could even be used for multiple types: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\CommonMark\Node\Block\FencedCode; +use League\CommonMark\Extension\CommonMark\Node\Block\IndentedCode; + +$environment = new Environment(); +$environment->addExtension(new CommonMarkCoreExtension()); + +$myRenderer = new MyCustomCodeRenderer(); + +$environment->addRenderer(FencedCode::class, $myRenderer, 10); +$environment->addRenderer(IndentedCode::class, $myRenderer, 20); +``` + +Multiple renderers can be added per element type - when this happens, we use the result from the highest-priority renderer that returns a non-`null` result. + +## Example + +Here's a custom renderer which renders thematic breaks as text (instead of ``): + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\CommonMark\Node\Block\ThematicBreak; +use League\CommonMark\Node\Node; +use League\CommonMark\Renderer\ChildNodeRendererInterface; +use League\CommonMark\Renderer\NodeRendererInterface; +use League\CommonMark\Util\HtmlElement; + +class TextDividerRenderer implements NodeRendererInterface +{ + public function render(Node $node, ChildNodeRendererInterface $childRenderer) + { + return new HtmlElement('pre', ['class' => 'divider'], '=============================='); + } +} + +$environment = new Environment(); +$environment->addExtension(new CommonMarkCoreExtension()); +$environment->addRenderer(ThematicBreak::class, new TextDividerRenderer()); +``` + +Note that thematic breaks should not contain children, which is why the `$childRenderer` is unused in this example. Otherwise we'd have to call code like this and return the result as part of the rendered HTML we're generating here: `$innerHtml = $childRenderer->renderNodes($node->children());` + +## Tips + +- Return an `HtmlElement` if possible. This makes it easier to extend and modify the results later. +- Don't forget to render any child elements that your node might contain! + +## XML Rendering + +The [XML renderer](/2.3/xml/) will automatically attempt to convert any AST nodes to XML by inspecting the name of the block/inline node and its attributes. You can instead control the XML element name and attributes by making your renderer implement `XmlNodeRendererInterface`: + +```php +use League\CommonMark\Node\Node; +use League\CommonMark\Renderer\ChildNodeRendererInterface; +use League\CommonMark\Renderer\NodeRendererInterface; +use League\CommonMark\Util\HtmlElement; +use League\CommonMark\Xml\XmlNodeRendererInterface; + +class TextDividerRenderer implements NodeRendererInterface, XmlNodeRendererInterface +{ + public function render(Node $node, ChildNodeRendererInterface $childRenderer) + { + return new HtmlElement('pre', ['class' => 'divider'], '=============================='); + } + + public function getXmlTagName(Node $node): string + { + return 'text_divider'; + } + + public function getXmlAttributes(Node $node): array + { + return ['character' => '=']; + } +} +``` diff --git a/docs/2.3/customization/slug-normalizer.md b/docs/2.3/customization/slug-normalizer.md new file mode 100644 index 0000000000..d268301b9b --- /dev/null +++ b/docs/2.3/customization/slug-normalizer.md @@ -0,0 +1,103 @@ +--- +layout: default +title: Slug Normalizer +description: Using the Slug Normalizer to produce unique, URL-safe text strings +--- + +# Slug Normalizer + +"Slugs" are strings used within `href`, `name`, and `id` HTML attributes to identify particular elements within a document. + +Some extensions (like the `HeadingPermalinkExtension`) need the ability to convert user-provided text into these URL-safe slugs while also ensuring that these are unique throughout the generated HTML. The `Environment` provides a pre-built normalizer you can use for this purpose. + +## Usage + +You can obtain a reference to the built-in slug normalizer by calling `$environment->getSlugNormalizer()`; + +To use this within your extension, have your parser/renderer/whatever implement `EnvironmentAwareInterface` and then implement the corresponding `setEnvironment` method like this: + +```php + +use League\CommonMark\Environment\EnvironmentInterface; +use League\CommonMark\Environment\EnvironmentAwareInterface; + +class MyCustomParserOrRenderer implements EnvironmentAwareInterface +{ + private $slugNormalizer; + + public function setEnvironment(EnvironmentInterface $environment): void + { + $this->slugNormalizer = $environment->getSlugNormalizer(); + } +} +``` + +You can then call `$this->slugNormalizer->normalize($text)` as needed. + +## Configuration + +The `slug_normalizer` configuration section allows you to adjust the following options: + +### `instance` + +You can change the string that is used as the "slug" by setting the `instance` option to any class that implements `TextNormalizerInterface`. +We provide a simple `SlugNormalizer` by default, but you may want to plug in a different library or create your own normalizer instead. + +For example, if you'd like each slug to be an MD5 hash, you could create a class like this: + +```php +use League\CommonMark\Normalizer\TextNormalizerInterface; + +final class MD5Normalizer implements TextNormalizerInterface +{ + public function normalize(string $text, $context = null): string + { + return md5($text); + } +} +``` + +And then configure it like this: + +```php +$config = [ + 'slug_normalizer' => [ + // ... other options here ... + 'instance' => new MD5Normalizer(), + ], +]; +``` + +Or you could use [PHP's anonymous class feature](https://www.php.net/manual/en/language.oop5.anonymous.php) to define the generator's behavior without creating a new class file: + +```php +$config = [ + 'slug_normalizer' => [ + // ... other options here ... + 'instance' => new class implements TextNormalizerInterface { + public function normalize(string $text, $context = null): string + { + // TODO: Implement your code here + } + }, + ], +]; +``` + +### `max_length` + +This can be configured to limit the length of that slug to prevent overly-long values. By default, that limit is `255` characters. You may set this to any positive integer, or `0` for no limit. + +(Note that generated slugs might be slightly longer than this "limit" if the `unique` option is enabled and the slug generator detects a duplicate slug and needs to add a suffix to make it unique.) + +### `unique` + +This options controls whether slugs should be unique. Possible values include: + +- `'document'` (string; **default**) - Ensures slugs are unique within a single document +- `'environment'` (string) - Ensures slugs are unique across multiple documents - see below +- `false` (boolean) - Disables unique slug generation + +You might have a use case where you're converting several different Markdown documents on the same page and so you'd like to ensure that none of those documents use conflicting slugs. In that case, you should set the `scope` option to `'environment'` to ensure that a single instance of a `MarkdownConverter` (which uses a single `Environment`) will never produce the same slug twice during its lifetime (which usually lasts the entire duration of a single HTTP request). + +If you need complete control over how unique slugs are generated, make your `'instance'` implement `UniqueSlugNormalizerInterface`; otherwise, we'll simply append incremental numbers to slugs to ensure they are unique. diff --git a/docs/2.3/extensions/attributes.md b/docs/2.3/extensions/attributes.md new file mode 100644 index 0000000000..63b39bec87 --- /dev/null +++ b/docs/2.3/extensions/attributes.md @@ -0,0 +1,90 @@ +--- +layout: default +title: Attributes Extension +description: The AttributesExtension allows HTML attributes to be added from within the document. +--- + +# Attributes + +The `AttributesExtension` allows HTML attributes to be added from within the document. + +## Attribute Syntax + +The basic syntax was inspired by [Kramdown](http://kramdown.gettalong.org/syntax.html#attribute-list-definitions)'s Attribute Lists feature. + +You can assign any attribute to a block-level element. Just directly prepend or follow the block with a block inline attribute list. +That consists of a left curly brace, optionally followed by a colon, the attribute definitions and a right curly brace: + +```markdown +> A nice blockquote +{: title="Blockquote title"} +``` + +This results in the following output: + +```html +
++``` + +CSS-selector-style declarations can be used to set the `id` and `class` attributes: + +```markdown +{#id .class} +## Header +``` + +Output: + +```html +A nice blockquote
+
Header
+``` + +As with a block-level element you can assign any attribute to a span-level elements using a span inline attribute list, +that has the same syntax and must immediately follow the span-level element: + +```markdown +This is *red*{style="color: red"}. +``` + +Output: + +```html +This is red.
+``` + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +Configure your `Environment` as usual and simply add the `AttributesExtension`: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\Attributes\AttributesExtension; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = []; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add this extension +$environment->addExtension(new AttributesExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('# Hello World!'); +``` diff --git a/docs/2.3/extensions/autolinks.md b/docs/2.3/extensions/autolinks.md new file mode 100644 index 0000000000..6ffda434f5 --- /dev/null +++ b/docs/2.3/extensions/autolinks.md @@ -0,0 +1,53 @@ +--- +layout: default +title: Autolink Extension +description: The Autolink extension automatically converts URLs in plain text to clickable links +--- + +# Autolink Extension + +_(Note: this extension is included by default within [the GFM extension](/2.3/extensions/github-flavored-markdown/))_ + +The `AutolinkExtension` adds [GFM-style autolinking][link-gfm-spec-autolinking]. It automatically links URLs and email addresses even when the CommonMark `<...>` autolink syntax is not used. + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +Configure your `Environment` as usual and simply add the `AutolinkExtension` provided by this package: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\Autolink\AutolinkExtension; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = []; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add this extension +$environment->addExtension(new AutolinkExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('I successfully installed the https://github.com/thephpleague/commonmark project with the Autolink extension!'); +``` + +## `@mention`-style Autolinking + +As of v1.5, [mention autolinking is now handled by a Mention Parser outside of this extension](/2.3/extensions/mention/). + +[link-league-commonmark]: https://github.com/thephpleague/commonmark +[link-gfm-spec-autolinking]: https://github.github.com/gfm/#autolinks-extension- diff --git a/docs/2.3/extensions/commonmark.md b/docs/2.3/extensions/commonmark.md new file mode 100644 index 0000000000..aa442f745c --- /dev/null +++ b/docs/2.3/extensions/commonmark.md @@ -0,0 +1,53 @@ +--- +layout: default +title: CommonMark Core Extension +description: The CommonMarkCoreExtension class includes all core Markdown syntax +--- + +# CommonMark Core Extension + +The `CommonMarkCoreExtension` class contains all of the core Markdown syntax - things like parsing headers, code blocks, links, image, etc. + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Included by Default + +This extension is automatically installed for you (behind-the-scenes) whenever you instantiate the parser using the `CommonMarkConverter` class: + +```php +use League\CommonMark\CommonMarkConverter; + +$converter = new CommonMarkConverter(); +echo $converter->convert('# Hello World!'); +``` + +## Manual Usage + +If you ever create a `new Environment()` from scratch, you'll probably want to include the `CommonMarkCoreExtension()` so you get all the standard Markdown syntax included: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = []; + +// Create a new Environment with the core extension +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('# Hello World!'); +``` + +Alternatively, if you don't want all of the core Markdown syntax, avoid using `CommonMarkCoreExtension`. You can always add just the individual parsers, renderers, etc. you actually want with the [`Environment`](/2.3/customization/environment/). (This is actually how the [Inlines Only Extension](/2.3/extensions/inlines-only/) works - it only includes a subset of things that `CommonMarkCoreExtension` does!) diff --git a/docs/2.3/extensions/default-attributes.md b/docs/2.3/extensions/default-attributes.md new file mode 100644 index 0000000000..a46cbddb17 --- /dev/null +++ b/docs/2.3/extensions/default-attributes.md @@ -0,0 +1,121 @@ +--- +layout: default +title: Default Attributes Extension +description: The DefaultAttributesExtension allows you to apply default HTML classes and other attributes using configuration options. +--- + +# Default Attributes + +The `DefaultAttributesExtension` allows you to apply default HTML classes and other attributes using configuration options. + +It works by applying the attributes to the nodes during the [`DocumentParsedEvent` event](/2.3/customization/abstract-syntax-tree/#documentparsedevent) - right after the nodes are parsed but before they are rendered. +(As a result, it's possible that renderers may add other attributes - the goal of this extension is only to provide custom defaults.) + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +Configure your `Environment` as usual and simply add the `DefaultAttributesExtension`: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\CommonMark\Node\Block\Heading; +use League\CommonMark\Extension\CommonMark\Node\Inline\Link; +use League\CommonMark\Extension\DefaultAttributes\DefaultAttributesExtension; +use League\CommonMark\Extension\Table\Table; +use League\CommonMark\MarkdownConverter; +use League\CommonMark\Node\Block\Paragraph; + +// Define your configuration, if needed +// Extension defaults are shown below +// If you're happy with the defaults, feel free to remove them from this array +$config = [ + 'default_attributes' => [ + Heading::class => [ + 'class' => static function (Heading $node) { + if ($node->getLevel() === 1) { + return 'title-main'; + } else { + return null; + } + }, + ], + Table::class => [ + 'class' => 'table', + ], + Paragraph::class => [ + 'class' => ['text-center', 'font-comic-sans'], + ], + Link::class => [ + 'class' => 'btn btn-link', + 'target' => '_blank', + ], + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add the extension +$environment->addExtension(new DefaultAttributesExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('# Hello World!'); +``` + +## Configuration + +This extension can be configured by providing a `default_attributes` array. Each key in the array should be a FQCN for the node class you wish to apply the default attribute to, and the values should be a map of attribute names to attribute values. + +Attribute values may be any of the following types: + +- `string` +- `string[]` +- `bool` +- `callable` (parameter is the `Node`, return value may be `string|string[]|bool`) + +## Examples + +Here's an example that will apply Bootstrap 4 classes and attributes: + +```php +$config = [ + 'default_attributes' => [ + Table::class => [ + 'class' => ['table', 'table-responsive'], + ], + BlockQuote::class => [ + 'class' => 'blockquote', + ], + ], +]; +``` + +Here's a more complex example that uses a `callable` to add a class only if the paragraph immediately follows an `` heading:
+
+```php
+$config = [
+ 'default_attributes' => [
+ Paragraph::class => [
+ 'class' => static function (Paragraph $paragraph) {
+ if ($paragraph->previous() instanceof Heading && $paragraph->previous()->getLevel() === 1) {
+ return 'lead';
+ }
+
+ return null;
+ },
+ ],
+ ],
+];
+```
diff --git a/docs/2.3/extensions/description-lists.md b/docs/2.3/extensions/description-lists.md
new file mode 100644
index 0000000000..66d63cebdf
--- /dev/null
+++ b/docs/2.3/extensions/description-lists.md
@@ -0,0 +1,76 @@
+---
+layout: default
+title: Description List Extension
+description: The Description List extension adds support for Markdown Extra-style lists
+---
+
+# Description List Extension
+
+The `DescriptionListExtension` adds [Markdown Extra-style description lists][link-markdown-extra-dl] to facilitate the creation of ``, `- `, and `
- ` HTML using Markdown.
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+Configure your `Environment` as usual and simply add the `DescriptionListExtension` provided by this package:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\DescriptionList\DescriptionListExtension;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new DescriptionListExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Some markdown goes here');
+```
+
+## Syntax
+
+The syntax is based directly on the rules and logic implemented by the [Markdown Extra library][link-markdown-extra-dl]. Here are some examples of sample Markdown input and HTML output demonstrating the syntax:
+
+```md
+Apple
+: Pomaceous fruit of plants of the genus Malus in
+ the family Rosaceae.
+: An American computer company.
+
+Orange
+: The fruit of an evergreen tree of the genus Citrus.
+```
+
+```html
+
+ - Apple
+ - Pomaceous fruit of plants of the genus Malus in
+ the family Rosaceae.
+ - An American computer company.
+
+ - Orange
+ - The fruit of an evergreen tree of the genus Citrus.
+
+```
+
+See the [Markdown Extra documentation][link-markdown-extra-dl] or [our own spec][link-commonmark-description-list-spec] for additional examples.
+
+[link-league-commonmark]: https://github.com/thephpleague/commonmark
+[link-markdown-extra-dl]: https://michelf.ca/projects/php-markdown/extra/#def-list
+[link-commonmark-description-list-spec]: https://github.com/thephpleague/commonmark/blob/2.0/tests/functional/Extension/DescriptionList/spec.txt
diff --git a/docs/2.3/extensions/disallowed-raw-html.md b/docs/2.3/extensions/disallowed-raw-html.md
new file mode 100644
index 0000000000..ffdd73c6f3
--- /dev/null
+++ b/docs/2.3/extensions/disallowed-raw-html.md
@@ -0,0 +1,76 @@
+---
+layout: default
+title: Disallowed Raw HTML Extension
+description: The DisallowedRawHtmlExtension automatically escapes certain HTML tags when rendering raw HTML
+---
+
+# Disallowed Raw HTML Extension
+
+_(Note: this extension is included by default within [the GFM extension](/2.3/extensions/github-flavored-markdown/))_
+
+The `DisallowedRawHtmlExtension` automatically escapes certain HTML tags when rendering raw HTML, such as:
+
+- ``
+- `<textarea>`
+- `<style>`
+- `<xmp>`
+- `<iframe>`
+- `<noembed>`
+- `<noframes>`
+- `<script>`
+- `<plaintext>`
+
+Filtering is done by replacing the leading `<` with the entity `<`.
+
+This is required by the [GFM spec](https://github.github.com/gfm/#disallowed-raw-html-extension-) because these particular tags could cause undesirable side-effects if a malicious user tries to introduce them.
+
+All other HTML tags are left untouched by this extension.
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+Configure your `Environment` as usual and simply add the `DisallowedRawHtmlExtension` provided by this package:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\DisallowedRawHtml\DisallowedRawHtmlExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Customize the extension's configuration if needed
+// Default values are shown below - you can omit this configuration if you're happy with those defaults
+// and don't want to customize them
+$config = [
+ 'disallowed_raw_html' => [
+ 'disallowed_tags' => ['title', 'textarea', 'style', 'xmp', 'iframe', 'noembed', 'noframes', 'script', 'plaintext'],
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new DisallowedRawHtmlExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('I cannot change the page <title>anymore ');
+```
+
+## Configuration
+
+This extension can be configured by providing a `disallowed_raw_html` array with the following nested configuration options. The defaults are shown in the code example above.
+
+### `disallowed_tags`
+
+An `array` containing a list of tags that should be escaped.
diff --git a/docs/2.3/extensions/external-links.md b/docs/2.3/extensions/external-links.md
new file mode 100644
index 0000000000..0dab8a3f62
--- /dev/null
+++ b/docs/2.3/extensions/external-links.md
@@ -0,0 +1,157 @@
+---
+layout: default
+title: External Links Extension
+description: The ExternalLinksExtension detects external links and adjusts their HTML markup
+---
+
+# External Links Extension
+
+This extension can detect links to external sites and adjust the markup accordingly:
+
+- Make the links open in new tabs/windows
+- Adds a `rel` attribute to the resulting `` tag with values like `"nofollow noopener noreferrer"`
+- Optionally adds any custom HTML classes
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+Configure your `Environment` as usual and simply add the `ExternalLinkExtension` provided by this package:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\ExternalLink\ExternalLinkExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [
+ 'external_link' => [
+ 'internal_hosts' => 'www.example.com', // TODO: Don't forget to set this!
+ 'open_in_new_window' => true,
+ 'html_class' => 'external-link',
+ 'nofollow' => '',
+ 'noopener' => 'external',
+ 'noreferrer' => 'external',
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new ExternalLinkExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('I successfully installed the
+ Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit.
+ Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+ Morbi1 leo risus, porta ac consectetur ac.
+
+
+
+
+ -
+
+ Elit Malesuada Ridiculus ↩
+
+
+
+
+```
+
+## Usage
+
+Configure your `Environment` as usual and simply add the `FootnoteExtension`:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Footnote\FootnoteExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+// Extension defaults are shown below
+// If you're happy with the defaults, feel free to remove them from this array
+$config = [
+ 'footnote' => [
+ 'backref_class' => 'footnote-backref',
+ 'backref_symbol' => '↩',
+ 'container_add_hr' => true,
+ 'container_class' => 'footnotes',
+ 'ref_class' => 'footnote-ref',
+ 'ref_id_prefix' => 'fnref:',
+ 'footnote_class' => 'footnote',
+ 'footnote_id_prefix' => 'fn:',
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add the extension
+$environment->addExtension(new FootnoteExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('# Hello World!');
+```
+
+## Configuration
+
+This extension can be configured by providing a `footnote` array with several nested configuration options. The defaults are shown in the code example above.
+
+### `backref_class`
+
+This `string` option defines which HTML class should be assigned to rendered footnote backreference elements.
+
+### `backref_symbol`
+
+This `string` option sets the symbol used as the contents of the footnote backreference link. It defaults to `\League\CommonMark\Extension\Footnote\Renderer\FootnoteBackrefRenderer::DEFAULT_SYMBOL = '↩'`.
+
+If you want to use a custom icon, set this to an empty string `''` and take a look at the [Adding Icons](#adding-icons) section below.
+
+> Note: Special HTML characters (`" & < >`) provided here will be escaped for security reasons.
+
+### `container_add_hr`
+
+This `boolean` option controls whether an `
` element should be added inside the container. Set this to `false` if you want more control over how the footnote section at the bottom is differentiated from the rest of the document.
+
+### `container_class`
+
+This `string` option defines which HTML class should be assigned to the container at the bottom of the page which shows all the footnotes.
+
+### `ref_class`
+
+This `string` option defines which HTML class should be assigned to rendered footnote reference elements.
+
+### `ref_id_prefix`
+
+This `string` option defines the prefix prepended to footnote references.
+
+### `footnote_class`
+
+This `string` option defines which HTML class should be assigned to rendered footnote elements.
+
+### `footnote_id_prefix`
+
+This `string` option defines the prefix prepended to footnote elements.
+
+## Adding Icons
+
+You can use CSS to add a custom icon instead of providing a `symbol`:
+
+```php
+$config = [
+ 'footnote' => [
+ 'backref_class' => 'footnote-backref',
+ 'symbol' => '',
+ ],
+];
+```
+
+Then target the `backref_class` given in the configuration in your CSS:
+
+```css
+/**
+ * Custom SVG Icon.
+ */
+.footnote-backref::after {
+ display: inline-block;
+ content: "";
+ /**
+ * Octicon Link (https://iconify.design/icon-sets/octicon/link.html)
+ * [Pro Tip] Use an SVG URL encoder (https://yoksel.github.io/url-encoder).
+ */
+ background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' aria-hidden='true' style='-ms-transform:rotate(360deg);-webkit-transform:rotate(360deg)' viewBox='0 0 16 16' transform='rotate(360)'%3E%3Cpath fill-rule='evenodd' d='M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z' fill='%23626262'/%3E%3C/svg%3E");
+ background-repeat: no-repeat;
+ background-size: 1em;
+}
+```
diff --git a/docs/2.3/extensions/front-matter.md b/docs/2.3/extensions/front-matter.md
new file mode 100644
index 0000000000..9cb48a27ae
--- /dev/null
+++ b/docs/2.3/extensions/front-matter.md
@@ -0,0 +1,150 @@
+---
+layout: default
+title: Front Matter Extension
+description: The Front Matter extension automatically parses YAML front matter from your Markdown.
+---
+
+# Front Matter Extension
+
+The `FrontMatterExtension` adds the ability to parse YAML front matter from the Markdown document and include that in the return result.
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+You will also need to install `symfony/yaml` or the [YAML extension for PHP](https://www.php.net/manual/book.yaml.php) to use this extension. For `symfony/yaml`:
+
+```bash
+composer require symfony/yaml
+```
+
+(You can use any version of `symfony/yaml` 2.3 or higher, though we recommend using 4.0 or higher.)
+
+## Front Matter Syntax
+
+This extension follows the [Jekyll Front Matter syntax](https://jekyllrb.com/docs/front-matter/). The front matter must be the first thing in the file and must take the form of valid YAML set between triple-dashed lines. Here is a basic example:
+
+```markdown
+---
+layout: post
+title: I Love Markdown
+tags:
+ - test
+ - example
+---
+
+# Hello World!
+```
+
+This will produce a front matter array similar to this:
+
+```php
+$parsedFrontMatter = [
+ 'layout' => 'post',
+ 'title' => 'I Love Markdown',
+ 'tags' => [
+ 'test',
+ 'example',
+ ],
+];
+```
+
+And the HTML output will only contain the one heading:
+
+```html
+Hello World!
+```
+
+## Usage
+
+Configure your `Environment` as usual and add the `FrontMatterExtension`:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;use League\CommonMark\Extension\FrontMatter\FrontMatterExtension;
+use League\CommonMark\Extension\FrontMatter\Output\RenderedContentWithFrontMatter;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add the extension
+$environment->addExtension(new FrontMatterExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+
+// A sample Markdown file with some front matter:
+$markdown = <<convert($markdown);
+
+// Grab the front matter:
+if ($result instanceof RenderedContentWithFrontMatter) {
+ $frontMatter = $result->getFrontMatter();
+}
+
+// Output the HTML using any of these:
+echo $result; // implicit string cast
+// or:
+echo (string) $result; // explicit string cast
+// or:
+echo $result->getContent();
+```
+
+### Parsing Front Matter Only
+
+You don't have to parse the entire file (including all the Markdown) if you only want the front matter. You can either instantiate the front matter parser yourself and call it directly, like this:
+
+```php
+use League\CommonMark\Extension\FrontMatter\Data\LibYamlFrontMatterParser;
+use League\CommonMark\Extension\FrontMatter\Data\SymfonyYamlFrontMatterParser;
+use League\CommonMark\Extension\FrontMatter\FrontMatterParser;
+
+$markdown = '...'; // TODO: Load some Markdown content somehow
+
+// For `symfony/yaml`
+$frontMatterParser = new FrontMatterParser(new SymfonyYamlFrontMatterParser());
+// For YAML extension
+$frontMatterParser = new FrontMatterParser(new LibYamlFrontMatterParser());
+$result = $frontMatterParser->parse($markdown);
+
+var_dump($result->getFrontMatter()); // The parsed front matter
+var_dump($result->getContent()); // Markdown content without the front matter
+```
+
+Or you can use the `getFrontMatterParser()` method from the extension:
+
+```php
+use League\CommonMark\Extension\FrontMatter\FrontMatterExtension;
+
+$markdown = '...'; // TODO: Load some Markdown content somehow
+
+$frontMatterExtension = new FrontMatterExtension();
+$result = $frontMatterExtension->getFrontMatterParser()->parse($markdown);
+
+var_dump($result->getFrontMatter()); // The parsed front matter
+var_dump($result->getContent()); // Markdown content without the front matter
+```
+
+This latter approach may be more convenient if you have already instantiated a `FrontMatterExtension` object you're adding to the `Environment` somewhere and just want to call that.
diff --git a/docs/2.3/extensions/github-flavored-markdown.md b/docs/2.3/extensions/github-flavored-markdown.md
new file mode 100644
index 0000000000..ae9e467a5e
--- /dev/null
+++ b/docs/2.3/extensions/github-flavored-markdown.md
@@ -0,0 +1,67 @@
+---
+layout: default
+title: GitHub-Flavored Markdown
+description: The GithubFlavoredMarkdownExtension class includes all the GFM addons
+---
+
+# GitHub-Flavored Markdown
+
+You can manually add the GFM extension to your environment like this:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\GithubFlavoredMarkdownExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the CommonMark and GFM parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+$environment->addExtension(new GithubFlavoredMarkdownExtension());
+
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Hello GFM!');
+```
+
+This will automatically include all of these sub-extensions/features for you:
+
+- [Autolinks](/2.3/extensions/autolinks/)
+- [Disallowed Raw HTML](/2.3/extensions/disallowed-raw-html/)
+- [Strikethrough](/2.3/extensions/strikethrough/)
+- [Tables](/2.3/extensions/tables/)
+- [Task Lists](/2.3/extensions/task-lists/)
+
+Or, if you only want a subset of GFM extensions, you can add them individually like this instead:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\Autolink\AutolinkExtension;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\DisallowedRawHtml\DisallowedRawHtmlExtension;
+use League\CommonMark\Extension\Strikethrough\StrikethroughExtension;
+use League\CommonMark\Extension\Table\TableExtension;
+use League\CommonMark\Extension\TaskList\TaskListExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Remove any of the lines below if you don't want a particular feature
+$environment->addExtension(new AutolinkExtension());
+$environment->addExtension(new DisallowedRawHtmlExtension());
+$environment->addExtension(new StrikethroughExtension());
+$environment->addExtension(new TableExtension());
+$environment->addExtension(new TaskListExtension());
+
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Hello GFM!');
+```
+
+This extension relies on the `CommonMarkCoreExtension` being enabled, so [don't forget to include that](/2.3/extensions/commonmark/) too.
diff --git a/docs/2.3/extensions/heading-permalinks.md b/docs/2.3/extensions/heading-permalinks.md
new file mode 100644
index 0000000000..3ba6673b21
--- /dev/null
+++ b/docs/2.3/extensions/heading-permalinks.md
@@ -0,0 +1,222 @@
+---
+layout: default
+title: Heading Permalink Extension
+description: The HeadingPermalinkExtension makes all header elements linkable
+---
+
+# Heading Permalink Extension
+
+This extension makes all of your heading elements (``, ``, etc) linkable so that users can quickly grab a link to that specific part of the document - almost like the headings in this documentation!
+
+**Tip:** You can combine this with the [Table of Contents extension](/2.3/extensions/table-of-contents/) to automatically generate a list of links to the headings in your documents.
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+This extension can be added to any new `Environment`:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkExtension;
+use League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkRenderer;
+use League\CommonMark\MarkdownConverter;
+
+// Extension defaults are shown below
+// If you're happy with the defaults, feel free to remove them from this array
+$config = [
+ 'heading_permalink' => [
+ 'html_class' => 'heading-permalink',
+ 'id_prefix' => 'content',
+ 'fragment_prefix' => 'content',
+ 'insert' => 'before',
+ 'min_heading_level' => 1,
+ 'max_heading_level' => 6,
+ 'title' => 'Permalink',
+ 'symbol' => HeadingPermalinkRenderer::DEFAULT_SYMBOL,
+ 'aria_hidden' => true,
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new HeadingPermalinkExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('# Hello World!');
+```
+
+## Configuration
+
+This extension can be configured by providing a `heading_permalink` array with several nested configuration options. The defaults are shown in the code example above.
+
+### `html_class`
+
+The value of this nested configuration option should be a `string` that you want set as the `` tag's `class` attribute. This defaults to `'heading-permalink'`.
+
+### `id_prefix`
+
+This should be a `string` you want prepended to HTML IDs. This prevents generating HTML ID attributes which might conflict with others in your stylesheet. A dash separator (`-`) will be added between the prefix and the ID. You can instead set this to an empty string (`''`) if you don't want a prefix.
+
+### `fragment_prefix`
+
+This should be a `string` you want prepended to the URL fragment in the link's `href` attribute. **This should typically be set to the same value as `id_prefix` for links to work properly.** However, you may not want to expose that same prefix in your URLs - in that case, you can set this to something different (even an empty string) and use JavaScript to "rewrite" them.
+
+For example, to emulate how GitHub heading permalinks work, set `id_prefix` to `'user-content'`, set `fragment_prefix` to `''`, and insert some JavaScript into the page like this:
+
+```js
+var scrollToPermalink = function() {
+ var link = document.getElementById('user-content-' + window.location.hash);
+ if (link) {
+ link.scrollIntoView({behavior: 'smooth'});
+ }
+};
+
+window.addEventListener('hashchange', scrollToPermalink);
+if (window.location.hash) {
+ scrollToPermalink();
+}
+```
+
+### `insert`
+
+This controls whether the anchor is added to the beginning of the ``, `` etc. tag or to the end. Can be set to either `'before'` or `'after'`.
+
+### `min_heading_level` and `max_heading_level`
+
+These two settings control which headings should have permalinks added. By default, all 6 levels (`1`, `2`, `3`, `4`, `5`, and `6`) will have them. You can override this by setting the `min_heading_level` and/or `max_heading_level` to a different number (`int` value).
+
+### `symbol`
+
+This option sets the symbol used to display the permalink on the document. This defaults to `\League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkRenderer::DEFAULT_SYMBOL = '¶'`.
+
+If you want to use a custom icon, then set this to an empty string `''` and check out the [Adding Icons](#adding-icons) sections below.
+
+> Note: Special HTML characters (`" & < >`) provided here will be escaped for security reasons.
+
+### `title`
+
+This option sets the `title` attribute on the `` tag. This defaults to `'Permalink'`.
+
+### `aria_hidden`
+
+This option sets the `aria-hidden` attribute on the `` tag. This defaults to `aria-hidden="true"`.
+
+Setting this option to false would render the `` tag excluding the `aria-hidden` entirely.
+
+## Example
+
+If you wanted to style your headings exactly like this documentation page does, try this configuration!
+
+```php
+$config = [
+ 'heading_permalink' => [
+ 'html_class' => 'heading-permalink',
+ 'insert' => 'after',
+ 'symbol' => '¶',
+ 'title' => "Permalink",
+ ],
+];
+```
+
+Along with this CSS:
+
+```css
+.heading-permalink {
+ font-size: .8em;
+ vertical-align: super;
+ text-decoration: none;
+ color: transparent;
+}
+
+h1:hover .heading-permalink,
+h2:hover .heading-permalink,
+h3:hover .heading-permalink,
+h4:hover .heading-permalink,
+h5:hover .heading-permalink,
+h6:hover .heading-permalink,
+.heading-permalink:hover {
+ text-decoration: none;
+ color: #777;
+}
+```
+
+## Styling Ideas
+
+This library doesn't provide any CSS styling for the anchor element(s), but here are some ideas you could use in your own stylesheet.
+
+You could hide the icon until the user hovers over the heading:
+
+```css
+.heading-permalink {
+ visibility: hidden;
+}
+
+h1:hover .heading-permalink,
+h2:hover .heading-permalink,
+h3:hover .heading-permalink,
+h4:hover .heading-permalink,
+h5:hover .heading-permalink,
+h6:hover .heading-permalink
+{
+ visibility: visible;
+}
+```
+
+You could also float the symbol just a little bit left of the heading:
+
+```css
+.heading-permalink {
+ float: left;
+ padding-right: 4px;
+ margin-left: -20px;
+ line-height: 1;
+}
+```
+
+These are only ideas - feel free to customize this however you'd like!
+
+## Adding Icons
+
+You can also use CSS to add a custom icon instead of providing a `symbol`:
+
+```php
+$config = [
+ 'heading_permalink' => [
+ 'html_class' => 'heading-permalink',
+ 'symbol' => '',
+ ],
+];
+```
+
+Then targeting the `html_class` given in the configuration in your CSS:
+
+```css
+/**
+ * Custom SVG Icon.
+ */
+.heading-permalink::after {
+ display: inline-block;
+ content: "";
+ /**
+ * Octicon Link (https://iconify.design/icon-sets/octicon/link.html)
+ * [Pro Tip] Use an SVG URL encoder (https://yoksel.github.io/url-encoder).
+ */
+ background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' aria-hidden='true' style='-ms-transform:rotate(360deg);-webkit-transform:rotate(360deg)' viewBox='0 0 16 16' transform='rotate(360)'%3E%3Cpath fill-rule='evenodd' d='M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z' fill='%23626262'/%3E%3C/svg%3E");
+ background-repeat: no-repeat;
+ background-size: 1em;
+}
+```
diff --git a/docs/2.3/extensions/inlines-only.md b/docs/2.3/extensions/inlines-only.md
new file mode 100644
index 0000000000..a91f657011
--- /dev/null
+++ b/docs/2.3/extensions/inlines-only.md
@@ -0,0 +1,42 @@
+---
+layout: default
+title: Inlines Only Extension
+description: The InlinesOnlyExtension only enables parsing of inline elements
+---
+
+# Inlines Only Extension
+
+This extension configures the parser to only render inline elements - no paragraph tags, headers, code blocks, etc. This makes it perfect for commenting systems where you only want users having bold, italics, links, etc.
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+Although you normally add extra extensions along with [the default CommonMark Core extension](/2.3/extensions/commonmark/), we're not going to do that here, because this is essentially a slimmed-down version of the core extension:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\InlinesOnly\InlinesOnlyExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Create a new, empty environment
+$environment = new Environment($config);
+
+// Add this extension
+$environment->addExtension(new InlinesOnlyExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('**Hello World!**');
+```
diff --git a/docs/2.3/extensions/mentions.md b/docs/2.3/extensions/mentions.md
new file mode 100644
index 0000000000..f17c0a42d9
--- /dev/null
+++ b/docs/2.3/extensions/mentions.md
@@ -0,0 +1,269 @@
+---
+layout: default
+title: Mention Parser
+description: The MentionParser makes it easy to parse shortened references like @colinodell and #123 to custom URLs
+---
+
+# Mention Extension
+
+The `MentionExtension` makes it easy to parse shortened mentions and references like `@colinodell` to a Twitter URL
+or `#123` to a GitHub issue URL. You can create your own custom syntax by defining which prefix you want to use and
+how to generate the corresponding URL.
+
+## Usage
+
+You can create your own custom syntax by supplying the configuration with an array of options that
+define the starting prefix, a regular expression to match against, and any custom URL template or callable to
+generate the URL.
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Mention\MentionExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration
+$config = [
+ 'mentions' => [
+ // GitHub handler mention configuration.
+ // Sample Input: `@colinodell`
+ // Sample Output: `@colinodell`
+ 'github_handle' => [
+ 'prefix' => '@',
+ 'pattern' => '[a-z\d](?:[a-z\d]|-(?=[a-z\d])){0,38}(?!\w)',
+ 'generator' => 'https://github.com/%s',
+ ],
+ // GitHub issue mention configuration.
+ // Sample Input: `#473`
+ // Sample Output: `#473`
+ 'github_issue' => [
+ 'prefix' => '#',
+ 'pattern' => '\d+',
+ 'generator' => "https://github.com/thephpleague/commonmark/issues/%d",
+ ],
+ // Twitter handler mention configuration.
+ // Sample Input: `@colinodell`
+ // Sample Output: `@colinodell`
+ // Note: when registering more than one mention parser with the same prefix, the first mention parser to
+ // successfully match and return a properly constructed Mention object (where the URL has been set) will be the
+ // the mention parser that is used. In this example, the GitHub handle would actually match first because
+ // there isn't any real validation to check whether https://www.github.com/colinodell exists. However, in
+ // CMS applications, you could check whether its a local user first, then check Twitter and then GitHub, etc.
+ 'twitter_handle' => [
+ 'prefix' => '@',
+ 'pattern' => '[A-Za-z0-9_]{1,15}(?!\w)',
+ 'generator' => 'https://twitter.com/%s',
+ ],
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add the Mention extension.
+$environment->addExtension(new MentionExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Follow me on GitHub: @colinodell');
+// Output:
+//
Follow me on GitHub: @colinodell
+```
+
+## String-Based URL Templates
+
+URL templates are perfect for situations where the identifier is inserted directly into a URL:
+
+```text
+"@colinodell" => https://www.twitter.com/colinodell
+ ▲└────┬───┘ └───┬────┘
+ │ │ │
+Prefix └───────────── Identifier ────────────┘
+```
+
+Examples of using string-based URL templates can be seen in the usage example above - you simply provide a `string` to the `generator` option.
+
+Note that the URL template must be a string, and that the `%s` placeholder will be replaced by whatever the user enters after the prefix (in this case, `@`). You can use any prefix, regular expression pattern (without opening/closing delimiter or modifiers), or URL template you want!
+
+## Custom Callback-Based Parsers
+
+Need more power than simply adding the mention inside a string based URL template? The `MentionExtension` automatically
+detects if the provided generator is an object that implements `\League\CommonMark\Extension\Mention\Generator\MentionGeneratorInterface`
+or a valid [PHP callable](https://www.php.net/manual/en/language.types.callable.php) that can generate a
+resulting URL.
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Mention\Generator\MentionGeneratorInterface;
+use League\CommonMark\Extension\Mention\Mention;
+use League\CommonMark\Extension\Mention\MentionExtension;
+use League\CommonMark\Node\Inline\AbstractInline;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration
+$config = [
+ 'mentions' => [
+ 'github_handle' => [
+ 'prefix' => '@',
+ 'pattern' => '[a-z\d](?:[a-z\d]|-(?=[a-z\d])){0,38}(?!\w)',
+ // The recommended approach is to provide a class that implements MentionGeneratorInterface.
+ 'generator' => new GithubUserMentionGenerator(), // TODO: Implement such a class yourself
+ ],
+ 'github_issue' => [
+ 'prefix' => '#',
+ 'pattern' => '\d+',
+ // Alternatively, if your logic is simple, you can implement an inline anonymous class like this example.
+ 'generator' => new class implements MentionGeneratorInterface {
+ public function generateMention(Mention $mention): ?AbstractInline
+ {
+ $mention->setUrl(\sprintf('https://github.com/thephpleague/commonmark/issues/%d', $mention->getIdentifier()));
+
+ return $mention;
+ }
+ },
+ ],
+ 'github_issue' => [
+ 'prefix' => '#',
+ 'pattern' => '\d+',
+ // Any type of callable, including anonymous closures, (with optional typehints) are also supported.
+ // This allows for better compatibility between different major versions of CommonMark.
+ // However, you sacrifice the ability to type-check which means automated development tools
+ // may not notice if your code is no longer compatible with new versions - you'll need to
+ // manually verify this yourself.
+ 'generator' => function ($mention) {
+ // Immediately return if not passed the supported Mention object.
+ // This is an example of the types of manual checks you'll need to perform if not using type hints
+ if (!($mention instanceof Mention)) {
+ return null;
+ }
+
+ $mention->setUrl(\sprintf('https://github.com/thephpleague/commonmark/issues/%d', $mention->getIdentifier()));
+
+ return $mention;
+ },
+ ],
+
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add the Mention extension.
+$environment->addExtension(new MentionExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Follow me on Twitter: @colinodell');
+// Output:
+// Follow me on Twitter: @colinodell
+```
+
+When implementing `MentionGeneratorInterface` or a simple callable, you'll receive a single `Mention` parameter and must either:
+
+- Return the same passed `Mention` object along with setting the URL; or,
+- Return a new object that extends `\League\CommonMark\Inline\Element\AbstractInline`; or,
+- Return `null` (and not set a URL on the `Mention` object) if the mention isn't a match and should be skipped; not parsed.
+
+Here's a faux-real-world example of how you might use such a generator for your application. Imagine you
+want to parse `@username` into custom user profile links for your application, but only if the user exists. You could
+create a class like the following which integrates with the framework your application is built on:
+
+```php
+use League\CommonMark\Extension\Mention\Generator\MentionGeneratorInterface;
+use League\CommonMark\Extension\Mention\Mention;
+use League\CommonMark\Inline\Element\AbstractInline;
+
+class UserMentionGenerator implements MentionGeneratorInterface
+{
+ private $currentUser;
+ private $userRepository;
+ private $router;
+
+ public function __construct (AccountInterface $currentUser, UserRepository $userRepository, Router $router)
+ {
+ $this->currentUser = $currentUser;
+ $this->userRepository = $userRepository;
+ $this->router = $router;
+ }
+
+ public function generateMention(Mention $mention): ?AbstractInline
+ {
+ // Determine mention visibility (i.e. member privacy).
+ if (!$this->currentUser->hasPermission('access profiles')) {
+ $emphasis = new \League\CommonMark\Inline\Element\Emphasis();
+ $emphasis->appendChild(new \League\CommonMark\Inline\Element\Text('[members only]'));
+ return $emphasis;
+ }
+
+ // Locate the user that is mentioned.
+ $user = $this->userRepository->findUser($mention->getIdentifier());
+
+ // The mention isn't valid if the user does not exist.
+ if (!$user) {
+ return null;
+ }
+
+ // Change the label.
+ $mention->setLabel($user->getFullName());
+ // Use the path to their profile as the URL, typecasting to a string in case the service returns
+ // a __toString object; otherwise you will need to figure out a way to extract the string URL
+ // from the service.
+ $mention->setUrl((string) $this->router->generate('user_profile', ['id' => $user->getId()]));
+
+ return $mention;
+ }
+}
+```
+
+You can then hook this class up to a mention definition in the configuration to generate profile URLs from Markdown
+mentions:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Mention\MentionExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Grab your UserMentionGenerator somehow, perhaps from a DI container or instantiate it if needed
+$userMentionGenerator = $container->get(UserMentionGenerator::class);
+
+// Define your configuration
+$config = [
+ 'mentions' => [
+ 'user_url_generator' => [
+ 'prefix' => '@',
+ 'pattern' => '[a-z0-9]+',
+ 'generator' => $userMentionGenerator,
+ ],
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add the Mention extension.
+$environment->addExtension(new MentionExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('You should ask @colinodell about that');
+
+// Output (if current user has permission to view profiles):
+// You should ask Colin O'Dell about that
+//
+// Output (if current user doesn't have has access to view profiles):
+// You should ask [members only] about that
+```
+
+## Rendering
+
+Whenever a mention is found, a `Mention` object is added to the [document's AST](/2.3/customization/abstract-syntax-tree/).
+This object extends from `Link`, so it'll be rendered as a normal `` tag by default.
+
+If you need more control over the output you can implement a [custom renderer](/2.3/customization/rendering/) for the `Mention` type
+and convert it to whatever HTML you wish!
diff --git a/docs/2.3/extensions/overview.md b/docs/2.3/extensions/overview.md
new file mode 100644
index 0000000000..1217e165ce
--- /dev/null
+++ b/docs/2.3/extensions/overview.md
@@ -0,0 +1,116 @@
+---
+layout: default
+title: Extensions Overview
+description: An overview of the extensions included with this library
+---
+
+# Extensions Overview
+
+Extensions provide a simple way to add new syntax and features to the CommonMark parser.
+
+## Included Extensions
+
+Starting with version `1.3.0`, this library includes several extensions to support GitHub Flavored Markdown (GFM) and
+many other common use-cases. Most of these extensions started out as 3rd-party community based extensions that have
+since been officially adopted by this library in an effort to ensure future compatibility and to provide an easy way
+to enhance your experience out-of-the-box depending on your specific use-cases.
+
+| Extension | Purpose | Version Introduced | GFM |
+| --------- | ------- | ------------------ | --- |
+| [Attributes] | Add HTML attributes (like `id` and `class`) from within the Markdown content | `1.5.0` | |
+| [Autolinks] | Enables automatic linking of URLs within text without needing to wrap them with Markdown syntax | `1.3.0` | |
+| [Default Attributes] | Easily apply default HTML classes using configuration options to match your site's styles | `2.0.0` | |
+| [Description Lists] | Create `` description lists using Markdown Extra's syntax | `2.0.0` | |
+| [Disallowed Raw HTML] | Disables certain kinds of HTML tags that could affect page rendering | `1.3.0` | |
+| [External Links] | Tags external links with additional markup | `1.3.0` | |
+| [Footnotes] | Add footnote references throughout the document and show a listing of them at the bottom | `1.5.0` | |
+| [Front Matter] | Parses YAML front matter from your Markdown input | `2.0.0` | |
+| **[GitHub Flavored Markdown]** | Enables full support for GFM. Automatically includes the extensions noted in the `GFM` column (though you can certainly add them individually if you wish): | `1.3.0` | |
+| [Heading Permalinks] | Makes heading elements linkable | `1.4.0` | |
+| [Inlines Only] | Only includes standard CommonMark inline elements - perfect for handling comments and other short bits of text where you only want bold, italic, links, etc. | `1.3.0` | |
+| [Mentions] | Easy parsing of `@mention` and `#123`-style references | `1.5.0` | |
+| [Strikethrough] | Allows using tilde characters (`~~`) for ~strikethrough~ formatting | `1.3.0` | |
+| [Tables] | Enables you to create HTML tables | `1.3.0` | |
+| [Table of Contents] | Automatically inserts links to the headings at the top of your document | `1.4.0` | |
+| [Task Lists] | Allows the creation of task lists | `1.3.0` | |
+| [Smart Punctuation] | Intelligently converts ASCII quotes, dashes, and ellipses to their fancy Unicode equivalents | `1.3.0` | |
+
+## Usage
+
+You can enable extensions by simply calling `->addExtension()` on the [Environment](/2.3/customization/environment/).
+
+In an effort to streamline the extensions used in GitHub Flavored Markdown (GFM), a special extension named
+`GithubFlavoredMarkdownExtension` can be used that will automatically add all the extensions checked in the `GFM`
+column above for you:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\GithubFlavoredMarkdownExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the extensions you need
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+$environment->addExtension(new GithubFlavoredMarkdownExtension());
+
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Hello World!');
+```
+
+Or maybe you only want a subset of GFM extensions, plus the [Smart Punctuation extension](/2.3/extensions/smart-punctuation/):
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\Autolink\AutolinkExtension;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\DisallowedRawHtml\DisallowedRawHtmlExtension;
+use League\CommonMark\Extension\SmartPunct\SmartPunctExtension;
+use League\CommonMark\Extension\Strikethrough\StrikethroughExtension;
+use League\CommonMark\Extension\Table\TableExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add the other extensions you need
+$environment->addExtension(new AutolinkExtension());
+$environment->addExtension(new DisallowedRawHtmlExtension());
+$environment->addExtension(new SmartPunctExtension());
+$environment->addExtension(new StrikethroughExtension());
+$environment->addExtension(new TableExtension());
+
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Hello World!');
+```
+
+The extension system makes it easy to mix-and-match extensions to fit your needs.
+
+## Writing Custom Extensions
+
+See the [Custom Extensions](/2.3/customization/extensions/) page for details on how you can create your own custom extensions.
+
+[Attributes]: /2.3/extensions/attributes/
+[Autolinks]: /2.3/extensions/autolinks/
+[Default Attributes]: /2.3/extensions/default-attributes/
+[Description Lists]: /2.3/extensions/description-lists/
+[Disallowed Raw HTML]: /2.3/extensions/disallowed-raw-html/
+[External Links]: /2.3/extensions/external-links/
+[Footnotes]: /2.3/extensions/footnotes/
+[Front Matter]: /2.3/extensions/front-matter/
+[GitHub Flavored Markdown]: /2.3/extensions/github-flavored-markdown/
+[Heading Permalinks]: /2.3/extensions/heading-permalinks/
+[Inlines Only]: /2.3/extensions/inlines-only/
+[Mentions]: /2.3/extensions/mentions/
+[Strikethrough]: /2.3/extensions/strikethrough/
+[Tables]: /2.3/extensions/tables/
+[Table of Contents]: /2.3/extensions/table-of-contents/
+[Task Lists]: /2.3/extensions/task-lists/
+[Smart Punctuation]: /2.3/extensions/smart-punctuation/
diff --git a/docs/2.3/extensions/smart-punctuation.md b/docs/2.3/extensions/smart-punctuation.md
new file mode 100644
index 0000000000..1fc9a63632
--- /dev/null
+++ b/docs/2.3/extensions/smart-punctuation.md
@@ -0,0 +1,63 @@
+---
+layout: default
+title: Smart Punctuation Extension
+description: The SmartPunctExtension intelligently converts ASCII quotes, dashes, and ellipses to their Unicode equivalents
+---
+
+# Smart Punctuation Extension
+
+The `SmartPunctExtension` Intelligently converts ASCII quotes, dashes, and ellipses to their Unicode equivalents.
+
+For example, this Markdown...
+
+```markdown
+"CommonMark is the PHP League's Markdown parser," she said. "It's super-configurable... you can even use additional extensions to expand its capabilities -- just like this one!"
+```
+
+Will result in this HTML:
+
+```html
+“CommonMark is the PHP League’s Markdown parser,” she said. “It’s super-configurable… you can even use additional extensions to expand its capabilities – just like this one!”
+```
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+Extensions can be added to any new `Environment`:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\SmartPunct\SmartPunctExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [
+ 'smartpunct' => [
+ 'double_quote_opener' => '“',
+ 'double_quote_closer' => '”',
+ 'single_quote_opener' => '‘',
+ 'single_quote_closer' => '’',
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new SmartPunctExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('# Hello World!');
+```
diff --git a/docs/2.3/extensions/strikethrough.md b/docs/2.3/extensions/strikethrough.md
new file mode 100644
index 0000000000..856efea980
--- /dev/null
+++ b/docs/2.3/extensions/strikethrough.md
@@ -0,0 +1,46 @@
+---
+layout: default
+title: Strikethrough Extension
+description: The StrikethroughExtension intelligently converts ASCII quotes, dashes, and ellipses to their Unicode equivalents
+---
+
+# Strikethrough Extension
+
+_(Note: this extension is included by default within [the GFM extension](/2.3/extensions/github-flavored-markdown/))_
+
+This extension adds support for GFM-style strikethrough syntax. It allows users to use `~~` in order to indicate text that should be rendered within `` tags.
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+This extension can be added to any new `Environment`:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Strikethrough\StrikethroughExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new StrikethroughExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('This extension is ~~really good~~ great!');
+```
diff --git a/docs/2.3/extensions/table-of-contents.md b/docs/2.3/extensions/table-of-contents.md
new file mode 100644
index 0000000000..14e3b1d43d
--- /dev/null
+++ b/docs/2.3/extensions/table-of-contents.md
@@ -0,0 +1,197 @@
+---
+layout: default
+title: Table of Contents Extension
+description: The Table of Contents extension automatically inserts links to the headings in your document.
+---
+
+# Table of Contents Extension
+
+The `TableOfContentsExtension` automatically inserts a table of contents into your document with links to the various headings.
+
+The [Heading Permalink](/2.3/extensions/heading-permalinks/) extension must also be included for this to work.
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+Configure your `Environment` as usual and simply add the `TableOfContentsExtension` and `HeadingPermalinkExtension` provided by this package:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkExtension;
+use League\CommonMark\Extension\TableOfContents\TableOfContentsExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+// Extension defaults are shown below
+// If you're happy with the defaults, feel free to remove them from this array
+$config = [
+ 'table_of_contents' => [
+ 'html_class' => 'table-of-contents',
+ 'position' => 'top',
+ 'style' => 'bullet',
+ 'min_heading_level' => 1,
+ 'max_heading_level' => 6,
+ 'normalize' => 'relative',
+ 'placeholder' => null,
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add the two extensions
+$environment->addExtension(new HeadingPermalinkExtension());
+$environment->addExtension(new TableOfContentsExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('# Awesome!');
+```
+
+## Configuration
+
+This extension can be configured by providing a `table_of_contents` array with several nested configuration options. The defaults are shown in the code example above.
+
+### `html_class`
+
+The value of this nested configuration option should be a `string` that you want set as the `` or `` tag's `class` attribute. This defaults to `'table-of-contents'`.
+
+### `normalize`
+
+This should be a `string` that defines one of three different strategies to use when generating a (potentially-nested) list from your various headings:
+
+- `'flat'`
+- `'as-is'`
+- **`'relative'`** (default)
+
+See "[Normalization Strategies](#normalization-strategies)" below for more information.
+
+### `position`
+
+This `string` controls where in the document your table of contents will be placed. There are two options:
+
+- **`'top'`** (default) - Insert at the very top of the document, before any content
+- `'before-headings'` - Insert just before the very first heading - useful if you want to have some descriptive text show above the table of content.
+- `'placeholder'` - Location is manually defined by a user-provided placeholder somewhere in the document (see the `placeholder` option below)
+
+If you'd like to customize this further, you can implement a [custom event listener](/2.3/customization/event-dispatcher/#registering-listeners) to locate the `TableOfContents` node and reposition it somewhere else in the document prior to rendering.
+
+### `placeholder`
+
+When combined with `'position' => 'placeholder'`, this setting tells the extension which placeholder content should be replaced with the Table of Contents. For example, if you set this option to `[TOC]`, then any lines in your document consisting of that `[TOC]` placeholder will be replaced by the Table of Contents. Note that this option has no default value - you must provide this string yourself.
+
+### `style`
+
+This `string` option controls what style of HTML list should be used to render the table of contents:
+
+- **`'bullet'`** (default) - Unordered, bulleted list (``)
+- `'ordered'` - Ordered list (``)
+
+### `min_heading_level` and `max_heading_level`
+
+These two settings control which headings should appear in the list. By default, all 6 levels (`1`, `2`, `3`, `4`, `5`, and `6`). You can override this by setting the `min_heading_level` and/or `max_heading_level` to a different number (`int` value).
+
+## Normalization Strategies
+
+Consider this sample Markdown input:
+
+```markdown
+## Level 2 Heading
+
+This is a sample document that starts with a level 2 heading
+
+#### Level 4 Heading
+
+Notice how we went from a level 2 heading to a level 4 heading!
+
+### Level 3 Heading
+
+And now we have a level 3 heading here.
+```
+
+Here's how the different normalization strategies would handle this input:
+
+### Strategy: `'flat'`
+
+All links in your table of contents will be shown in a flat, single-level list:
+
+```html
+
+ -
+
+
+ -
+
+
+ -
+
+
+
+
+
+```
+
+### Strategy: `'as-is'`
+
+Level 1 headings (``) will appear on the first level of the list, with level 2 headings (``) nested under those, and so forth - exactly as they occur within the document. But this can get weird if your document doesn't start with level 1 headings, or it doesn't properly nest the levels:
+
+```html
+
+ -
+
+ -
+
+
+ -
+
+ -
+
+
+
+
+ -
+
+
+
+
+
+
+
+
+
+```
+
+### Strategy: `'relative'`
+
+Applies nesting, but handles edge cases (like incorrect nesting levels) as you'd expect:
+
+```html
+
+ -
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+
+
+
+```
diff --git a/docs/2.3/extensions/tables.md b/docs/2.3/extensions/tables.md
new file mode 100644
index 0000000000..bb5f1abc89
--- /dev/null
+++ b/docs/2.3/extensions/tables.md
@@ -0,0 +1,126 @@
+---
+layout: default
+title: Table Extension
+description: The TableExtension adds the ability to create tables in CommonMark documents
+---
+
+# Table Extension
+
+_(Note: this extension is included by default within [the GFM extension](/2.3/extensions/github-flavored-markdown/))_
+
+The `TableExtension` adds the ability to create tables in CommonMark documents.
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+Configure your `Environment` as usual and simply add the `TableExtension` provided by this package:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Table\TableExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [
+ 'table' => [
+ 'wrap' => [
+ 'enabled' => false,
+ 'tag' => 'div',
+ 'attributes' => [],
+ ],
+ ],
+];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new TableExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Some Markdown with a table in it');
+```
+
+## Syntax
+
+This package is fully compatible with [GFM-style tables](https://github.github.com/gfm/#tables-extension-):
+
+### Simple
+
+Code:
+
+```markdown
+th | th(center) | th(right)
+---|:----------:|----------:
+td | td | td
+```
+
+Result:
+
+```html
+
+
+
+th
+th(center)
+th(right)/th>
+
+
+
+
+td
+td
+td
+
+
+
+```
+
+### Advanced
+
+```markdown
+| header 1 | header 2 | header 2 |
+| :------- | :------: | -------: |
+| cell 1.1 | cell 1.2 | cell 1.3 |
+| cell 2.1 | cell 2.2 | cell 2.3 |
+```
+
+## Configuration
+
+### Wrapping Container
+
+You can "wrap" the table with a container element by configuring the following options:
+
+- `enabled`: (`boolean`) Whether to wrap the table with a container element. Defaults to `false`.
+- `tag`: (`string`) The tag name of the container element. Defaults to `div`.
+- `attributes`: (`array`) An array of attributes to apply to the container element. Defaults to `[]`.
+
+For example, to wrap all tables within a `` container element:
+
+```php
+$config = [
+ 'table' => [
+ 'wrap' => [
+ 'enabled' => true,
+ 'tag' => 'div',
+ 'attributes' => ['class' => 'table-responsive'],
+ ],
+ ],
+];
+```
+
+## Credits
+
+The Table functionality was originally built by [Martin Hasoň](https://github.com/hason) and [Webuni s.r.o.](https://www.webuni.cz) before it was merged into the core parser.
diff --git a/docs/2.3/extensions/task-lists.md b/docs/2.3/extensions/task-lists.md
new file mode 100644
index 0000000000..39f1834f40
--- /dev/null
+++ b/docs/2.3/extensions/task-lists.md
@@ -0,0 +1,55 @@
+---
+layout: default
+title: Task List Extension
+description: The TaskListExtension adds support for GFM-style task lists
+---
+
+# Task List Extension
+
+_(Note: this extension is included by default within [the GFM extension](/2.3/extensions/github-flavored-markdown/))_
+
+This extension adds support for [GFM-style task lists](https://github.github.com/gfm/#task-list-items-extension-).
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+Configure your `Environment` as usual and simply add the `TaskListExtension` provided by this package:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\TaskList\TaskListExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new TaskListExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+
+$markdown = <<convert($markdown);
+```
+
+Please note that this extension doesn't provide any JavaScript functionality to handle people checking and unchecking boxes - you'll need to implement that yourself if needed.
diff --git a/docs/2.3/index.md b/docs/2.3/index.md
new file mode 100644
index 0000000000..72fbe6f788
--- /dev/null
+++ b/docs/2.3/index.md
@@ -0,0 +1,44 @@
+---
+layout: default
+title: Overview
+---
+
+
+
+# Overview
+
+[](https://twitter.com/colinodell)
+[](https://packagist.org/packages/league/commonmark)
+[](https://packagist.org/packages/league/commonmark)
+[](LICENSE)
+[](https://github.com/thephpleague/commonmark/actions?query=workflow%3ATests+branch%3Amain)
+[](https://scrutinizer-ci.com/g/thephpleague/commonmark/code-structure)
+[](https://scrutinizer-ci.com/g/thephpleague/commonmark)
+
+{{ site.data.project.highlights.description }}
+
+## Installation
+
+This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Basic Usage
+
+Simply instantiate the converter and start converting some Markdown to HTML!
+
+```php
+use League\CommonMark\CommonMarkConverter;
+
+$converter = new CommonMarkConverter();
+echo $converter->convert('# Hello World!');
+
+// Hello World!
+```
+
+
+**Important:** See the [basic usage](/2.3/basic-usage/) and [security](/2.3/security/) sections for important details.
diff --git a/docs/2.3/installation.md b/docs/2.3/installation.md
new file mode 100644
index 0000000000..effe16973d
--- /dev/null
+++ b/docs/2.3/installation.md
@@ -0,0 +1,19 @@
+---
+layout: default
+title: Installation
+description: Instructions on how to install the league/commonmark library
+---
+
+# Installation
+
+The recommended installation method is via Composer.
+
+```bash
+composer require "league/commonmark:^2.3"
+```
+
+Ensure that you’ve set up your project to [autoload Composer-installed packages](https://getcomposer.org/doc/01-basic-usage.md#autoloading).
+
+## Versioning
+
+[SemVer](http://semver.org/) will be followed closely. **It's highly recommended that you use [Composer's caret operator](https://getcomposer.org/doc/articles/versions.md#caret-version-range-) to ensure compatibility**; for example: `^2.3`. This is equivalent to `>=2.3 <3.0`.
diff --git a/docs/2.3/security.md b/docs/2.3/security.md
new file mode 100644
index 0000000000..caf37094ab
--- /dev/null
+++ b/docs/2.3/security.md
@@ -0,0 +1,92 @@
+---
+layout: default
+title: Security
+description: How to configure league/commonmark against possible security issues when handling untrusted user input
+---
+
+# Security
+
+In order to be fully compliant with the CommonMark spec, certain security settings are disabled by default. You will want to configure these settings if untrusted users will be providing the Markdown content:
+
+- `html_input`: How to handle raw HTML
+- `allow_unsafe_links`: Whether unsafe links are permitted
+- `max_nesting_level`: Protected against long render times or segfaults
+
+Further information about each option can be found below.
+
+## HTML Input
+
+**All HTML input is unescaped by default.** This behavior ensures that league/commonmark is 100% compliant with the CommonMark spec.
+
+If you're developing an application which renders user-provided Markdown from potentially untrusted users, you are **strongly** encouraged to set the `html_input` option in your configuration to either `escape` or `strip`:
+
+### Example - Escape all raw HTML input
+
+```php
+use League\CommonMark\CommonMarkConverter;
+
+$converter = new CommonMarkConverter(['html_input' => 'escape']);
+echo $converter->convert('');
+
+// <script>alert("Hello XSS!");</script>
+```
+
+### Example - Strip all HTML from the input
+
+```php
+use League\CommonMark\CommonMarkConverter;
+
+$converter = new CommonMarkConverter(['html_input' => 'strip']);
+echo $converter->convert('');
+
+// (empty output)
+```
+
+**Failing to set this option could make your site vulnerable to cross-site scripting (XSS) attacks!**
+
+See the [configuration](/2.3/configuration/) section for more information.
+
+## Unsafe Links
+
+Unsafe links are also allowed by default due to CommonMark spec compliance. An unsafe link is one that uses any of these protocols:
+
+- `javascript:`
+- `vbscript:`
+- `file:`
+- `data:` (except for `data:image` in png, gif, jpeg, or webp format)
+
+To prevent these from being parsed and rendered, you should set the `allow_unsafe_links` option to `false`.
+
+## Nesting Level
+
+**No maximum nesting level is enforced by default.** Markdown content which is too deeply-nested (like 10,000 nested blockquotes: '> > > > > ...') [could result in long render times or segfaults](https://github.com/thephpleague/commonmark/issues/243#issuecomment-217580285).
+
+If you need to parse untrusted input, consider setting a reasonable `max_nesting_level` (perhaps 10-50) depending on your needs. Once this nesting level is hit, any subsequent Markdown will be rendered as plain text.
+
+### Example - Prevent deep nesting
+
+```php
+use League\CommonMark\CommonMarkConverter;
+
+$markdown = str_repeat('> ', 10000) . ' Foo';
+
+$converter = new CommonMarkConverter(['max_nesting_level' => 5]);
+echo $converter->convert($markdown);
+
+//
+//
+//
+//
+//
+// > > > > > > > ... Foo
+//
+//
+//
+//
+```
+
+See the [configuration](/2.3/configuration/) section for more information.
+
+## Additional Filtering
+
+Although this library does offer these security features out-of-the-box, some users may opt to also run the HTML output through additional filtering layers (like HTMLPurifier). If you do this, make sure you **thoroughly** test your additional post-processing steps and configure them to work properly with the types of HTML elements and attributes that converted Markdown might produce, otherwise, you may end up with weird behavior like missing images, broken links, mismatched HTML tags, etc.
diff --git a/docs/2.3/support.md b/docs/2.3/support.md
new file mode 100644
index 0000000000..6531f9dbbc
--- /dev/null
+++ b/docs/2.3/support.md
@@ -0,0 +1,23 @@
+---
+layout: default
+title: Support
+description: Get help with the league/commonmark library
+---
+
+# Support
+
+Here are some useful resources to help you use this project:
+
+- 📰 [Project README file](https://github.com/thephpleague/commonmark/blob/main/README.md)
+- 📔 [Documentation](https://commonmark.thephpleague.com/2.3/) - you're reading it 😉
+- 💬 [Discussion forum](https://github.com/thephpleague/commonmark/discussions/categories/q-a) - **the best place to ask questions and get help**
+- 🐛 [Issue tracker](https://github.com/thephpleague/commonmark/issues) - report issues, bugs, and feature requests
+- 🥞 [StackOverflow](https://stackoverflow.com/search?q=php+commonmark)
+
+## Supported Versions
+
+See our [security policy](https://github.com/thephpleague/commonmark/blob/main/.github/SECURITY.md) for information about the support cycle for bug fixes and security updates.
+
+## Reporting a Vulnerability
+
+If you discover a security vulnerability within this package, please use the [Tidelift security contact form](https://tidelift.com/security) or email Colin O'Dell at . All security vulnerabilities will be promptly addressed. **Please do not disclose security-related issues publicly until a fix has been announced!**
diff --git a/docs/2.3/upgrading.md b/docs/2.3/upgrading.md
new file mode 100644
index 0000000000..81b411a471
--- /dev/null
+++ b/docs/2.3/upgrading.md
@@ -0,0 +1,7 @@
+---
+layout: default
+title: Upgrading from 2.2 to 2.3
+description: Guide to upgrading to newer versions of this library
+---
+
+# Upgrading from 2.2 to 2.3
diff --git a/docs/2.3/xml.md b/docs/2.3/xml.md
new file mode 100644
index 0000000000..7fad850e25
--- /dev/null
+++ b/docs/2.3/xml.md
@@ -0,0 +1,48 @@
+---
+layout: default
+title: XML Rendering
+description: Rendering Markdown documents in XML
+---
+
+# XML Rendering
+
+Version 2.0 introduced the ability to render Markdown `Document` objects in XML. This is particularly useful for debugging [custom extensions](/2.3/customization/overview/) as you can see the XML representation of the [Abstract Syntax Tree](/2.3/customization/abstract-syntax-tree/).
+
+To convert Markdown to XML, you would instantiate a `MarkdownToXmlConverter` with an [`Environment`](/2.3/customization/environment/) and then call `convert()` on any Markdown.
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Xml\MarkdownToXmlConverter;
+
+$environment = new Environment();
+$environment->addExtension(new CommonMarkCoreExtension());
+
+$converter = new MarkdownToXmlConverter($environment);
+
+echo $converter->convert('# **Hello** World!');
+```
+
+This will display XML output like this:
+
+```xml
+
+
+
+
+ Hello
+
+ World!
+
+
+```
+
+Alternatively, if you already have a `Document` object you want to visualize in XML, you can use the`XmlRenderer` class to convert it to XML.
+
+## Return Value
+
+Like with `CommonMarkConverter::convert()`, the `renderDocument()` actually returns an instance of `League\CommonMark\Output\RenderedContentInterface`. You can cast this (implicitly, as shown above, or explicitly) to a `string` or call `getContent()` to get the final XML output.
+
+## Customizing the XML Output
+
+See the [rendering documentation](/2.3/customization/rendering/#xml-rendering) for information on customizing the XML output.
diff --git a/docs/_data/menu.yml b/docs/_data/menu.yml
index 578862243b..43900f21f2 100644
--- a/docs/_data/menu.yml
+++ b/docs/_data/menu.yml
@@ -1,4 +1,48 @@
version:
+ '2.3':
+ Getting Started:
+ 'Overview': '/2.3/'
+ 'Installation': '/2.3/installation/'
+ 'Upgrading from 2.0': '/2.3/upgrading/'
+ 'Changelog': '/2.3/changelog/'
+ 'Support': '/2.3/support/'
+ Usage:
+ 'Basic Usage': '/2.3/basic-usage/'
+ 'Configuration': '/2.3/configuration/'
+ 'Security': '/2.3/security/'
+ 'XML': '/2.3/xml/'
+ Extensions:
+ 'Overview': '/2.3/extensions/overview/'
+ 'CommonMark': '/2.3/extensions/commonmark/'
+ 'GitHub-Flavored Markdown': '/2.3/extensions/github-flavored-markdown/'
+ 'Attributes': '/2.3/extensions/attributes/'
+ 'Autolinks': '/2.3/extensions/autolinks/'
+ 'Default Attributes': '/2.3/extensions/default-attributes/'
+ 'Description Lists': '/2.3/extensions/description-lists/'
+ 'Disallowed Raw HTML': '/2.3/extensions/disallowed-raw-html/'
+ 'External Links': '/2.3/extensions/external-links/'
+ 'Footnotes': '/2.3/extensions/footnotes/'
+ 'Heading Permalinks': '/2.3/extensions/heading-permalinks/'
+ 'Inlines Only': '/2.3/extensions/inlines-only/'
+ 'Mentions': '/2.3/extensions/mentions/'
+ 'Smart Punctuation': '/2.3/extensions/smart-punctuation/'
+ 'Strikethrough': '/2.3/extensions/strikethrough/'
+ 'Table of Contents': '/2.3/extensions/table-of-contents/'
+ 'Tables': '/2.3/extensions/tables/'
+ 'Task Lists': '/2.3/extensions/task-lists/'
+ Customization:
+ 'Overview': '/2.3/customization/overview/'
+ 'Environment': '/2.3/customization/environment/'
+ 'Extensions': '/2.3/customization/extensions/'
+ 'Configuration': '/2.3/customization/configuration/'
+ 'Event Dispatcher': '/2.3/customization/event-dispatcher/'
+ 'Cursor': '/2.3/customization/cursor/'
+ 'Block Parsing': '/2.3/customization/block-parsing/'
+ 'Inline Parsing': '/2.3/customization/inline-parsing/'
+ 'Delimiter Processing': '/2.3/customization/delimiter-processing/'
+ 'Abstract Syntax Tree': '/2.3/customization/abstract-syntax-tree/'
+ 'Rendering': '/2.3/customization/rendering/'
+ 'Slug Normalizer': '/2.3/customization/slug-normalizer/'
'2.2':
Getting Started:
'Overview': '/2.2/'
diff --git a/docs/_data/project.yml b/docs/_data/project.yml
index eb72648f6e..b633dd7143 100644
--- a/docs/_data/project.yml
+++ b/docs/_data/project.yml
@@ -6,6 +6,9 @@ google_analytics_tracking_id: UA-137970568-1
repository: commonmark
default_version: '2.2'
releases:
+ next:
+ '2.3:
+ documentation_link: '/2.3/'
current:
'2.2':
documentation_link: '/2.2/'
From 6490a6a4afca165d4c09f3e8c372f89f41580845 Mon Sep 17 00:00:00 2001
From: Colin O'Dell
Date: Sat, 22 Jan 2022 09:22:10 -0500
Subject: [PATCH 02/36] Fix typo
---
docs/_data/project.yml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/docs/_data/project.yml b/docs/_data/project.yml
index b633dd7143..5cd2007579 100644
--- a/docs/_data/project.yml
+++ b/docs/_data/project.yml
@@ -7,7 +7,7 @@ repository: commonmark
default_version: '2.2'
releases:
next:
- '2.3:
+ '2.3':
documentation_link: '/2.3/'
current:
'2.2':
From 6425ce5494eccaa881a30c874a3ce5f146102124 Mon Sep 17 00:00:00 2001
From: Colin O'Dell
Date: Sat, 5 Feb 2022 19:21:59 -0500
Subject: [PATCH 03/36] Document the HtmlDecorator
---
docs/2.3/customization/rendering.md | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/docs/2.3/customization/rendering.md b/docs/2.3/customization/rendering.md
index 3c48a49355..cff6c5aa95 100644
--- a/docs/2.3/customization/rendering.md
+++ b/docs/2.3/customization/rendering.md
@@ -112,6 +112,22 @@ Note that thematic breaks should not contain children, which is why the `$childR
- Return an `HtmlElement` if possible. This makes it easier to extend and modify the results later.
- Don't forget to render any child elements that your node might contain!
+## Wrapping Elements with `HtmlDecorator`
+
+A utility class called `HtmlDecorator` is provided to make it easier to wrap the output of any renderer within an additional HTML tag with custom attributes and/or classes. To use it:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Renderer\HtmlDecorator;
+use League\CommonMark\Extension\Table\Table;
+use League\CommonMark\Extension\Table\TableRenderer;
+
+$environment = new Environment();
+$environment->addExtension(new CommonMarkCoreExtension());
+$environment->addRenderer(Table::class, new HtmlDecorator(new TableRenderer(), 'div', ['class' => 'table-responsive']));
+```
+
## XML Rendering
The [XML renderer](/2.3/xml/) will automatically attempt to convert any AST nodes to XML by inspecting the name of the block/inline node and its attributes. You can instead control the XML element name and attributes by making your renderer implement `XmlNodeRendererInterface`:
From 888d68ea8a5669b1a1bc55bd9820b302a29f880f Mon Sep 17 00:00:00 2001
From: Colin O'Dell
Date: Sat, 5 Feb 2022 18:32:56 -0500
Subject: [PATCH 04/36] Fix non-public dataProvider()
---
tests/functional/AbstractLocalDataTest.php | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/functional/AbstractLocalDataTest.php b/tests/functional/AbstractLocalDataTest.php
index e62322ee8d..66f1886717 100644
--- a/tests/functional/AbstractLocalDataTest.php
+++ b/tests/functional/AbstractLocalDataTest.php
@@ -36,7 +36,7 @@ abstract protected function createConverter(array $config = []): ConverterInterf
/**
* @return iterable, string}>
*/
- abstract protected function dataProvider(): iterable;
+ abstract public function dataProvider(): iterable;
/**
* @dataProvider dataProvider
From aeaf1221ce95211fc9f28a22ceda9e3a42d8d6bf Mon Sep 17 00:00:00 2001
From: Colin O'Dell
Date: Sat, 5 Feb 2022 19:39:28 -0500
Subject: [PATCH 05/36] Add Embed extension
---
CHANGELOG.md | 4 +
composer.json | 4 +-
docs/2.3/extensions/embed.md | 152 ++++++++++++++++++
docs/2.3/extensions/overview.md | 2 +
docs/_data/menu.yml | 1 +
.../Embed/Bridge/OscaroteroEmbedAdapter.php | 49 ++++++
.../Embed/DomainFilteringAdapter.php | 50 ++++++
src/Extension/Embed/Embed.php | 50 ++++++
src/Extension/Embed/EmbedAdapterInterface.php | 25 +++
src/Extension/Embed/EmbedExtension.php | 48 ++++++
src/Extension/Embed/EmbedParser.php | 62 +++++++
src/Extension/Embed/EmbedProcessor.php | 60 +++++++
src/Extension/Embed/EmbedRenderer.php | 35 ++++
src/Extension/Embed/EmbedStartParser.php | 54 +++++++
.../Embed/Bridge/LocalFileClient.php | 102 ++++++++++++
.../Bridge/OscaroteroEmbedAdapterTest.php | 49 ++++++
.../Extension/Embed/Bridge/data/youtube.html | 2 +
.../Extension/Embed/Bridge/data/youtube.md | 3 +
...mbed.2879fe17dbfe688cfce2eef49bdcbde7.json | 48 ++++++
...atch.04c89f4aa4477375b9a0ca246fd32cca.json | 58 +++++++
.../Extension/Embed/EmbedExtensionTest.php | 47 ++++++
.../Extension/Embed/data/disallowed_link.html | 4 +
.../Extension/Embed/data/disallowed_link.md | 13 ++
.../Embed/data/disallowed_remove.html | 3 +
.../Extension/Embed/data/disallowed_remove.md | 13 ++
.../Extension/Embed/data/embeds.html | 27 ++++
.../functional/Extension/Embed/data/embeds.md | 36 +++++
.../Embed/DomainFilteringAdapterTest.php | 59 +++++++
.../unit/Extension/Embed/EmbedParserTest.php | 37 +++++
.../Extension/Embed/EmbedProcessorTest.php | 80 +++++++++
.../Extension/Embed/EmbedRendererTest.php | 32 ++++
tests/unit/Extension/Embed/EmbedTest.php | 31 ++++
tests/unit/Extension/Embed/FakeAdapter.php | 44 +++++
33 files changed, 1283 insertions(+), 1 deletion(-)
create mode 100644 docs/2.3/extensions/embed.md
create mode 100644 src/Extension/Embed/Bridge/OscaroteroEmbedAdapter.php
create mode 100644 src/Extension/Embed/DomainFilteringAdapter.php
create mode 100644 src/Extension/Embed/Embed.php
create mode 100644 src/Extension/Embed/EmbedAdapterInterface.php
create mode 100644 src/Extension/Embed/EmbedExtension.php
create mode 100644 src/Extension/Embed/EmbedParser.php
create mode 100644 src/Extension/Embed/EmbedProcessor.php
create mode 100644 src/Extension/Embed/EmbedRenderer.php
create mode 100644 src/Extension/Embed/EmbedStartParser.php
create mode 100644 tests/functional/Extension/Embed/Bridge/LocalFileClient.php
create mode 100644 tests/functional/Extension/Embed/Bridge/OscaroteroEmbedAdapterTest.php
create mode 100644 tests/functional/Extension/Embed/Bridge/data/youtube.html
create mode 100644 tests/functional/Extension/Embed/Bridge/data/youtube.md
create mode 100644 tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.oembed.2879fe17dbfe688cfce2eef49bdcbde7.json
create mode 100644 tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.watch.04c89f4aa4477375b9a0ca246fd32cca.json
create mode 100644 tests/functional/Extension/Embed/EmbedExtensionTest.php
create mode 100644 tests/functional/Extension/Embed/data/disallowed_link.html
create mode 100644 tests/functional/Extension/Embed/data/disallowed_link.md
create mode 100644 tests/functional/Extension/Embed/data/disallowed_remove.html
create mode 100644 tests/functional/Extension/Embed/data/disallowed_remove.md
create mode 100644 tests/functional/Extension/Embed/data/embeds.html
create mode 100644 tests/functional/Extension/Embed/data/embeds.md
create mode 100644 tests/unit/Extension/Embed/DomainFilteringAdapterTest.php
create mode 100644 tests/unit/Extension/Embed/EmbedParserTest.php
create mode 100644 tests/unit/Extension/Embed/EmbedProcessorTest.php
create mode 100644 tests/unit/Extension/Embed/EmbedRendererTest.php
create mode 100644 tests/unit/Extension/Embed/EmbedTest.php
create mode 100644 tests/unit/Extension/Embed/FakeAdapter.php
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e15f58dd1b..e6ff55efde 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ Updates should follow the [Keep a CHANGELOG](https://keepachangelog.com/) princi
## [Unreleased][unreleased]
+### Added
+
+ - Added new `EmbedExtension` (#805)
+
## [2.2.1] - 2022-01-25
### Fixed
diff --git a/composer.json b/composer.json
index a05bba90cb..49340e8c65 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
"league/config": "^1.1.1",
"psr/event-dispatcher": "^1.0",
"symfony/deprecation-contracts": "^2.1 || ^3.0",
- "symfony/polyfill-php80": "^1.15"
+ "symfony/polyfill-php80": "^1.16"
},
"require-dev": {
"ext-json": "*",
@@ -34,9 +34,11 @@
"commonmark/cmark": "0.30.0",
"commonmark/commonmark.js": "0.30.0",
"composer/package-versions-deprecated": "^1.8",
+ "embed/embed": "^4.4",
"erusev/parsedown": "^1.0",
"github/gfm": "0.29.0",
"michelf/php-markdown": "^1.4",
+ "nyholm/psr7": "^1.5",
"phpstan/phpstan": "^0.12.88 || ^1.0.0",
"phpunit/phpunit": "^9.5.5",
"scrutinizer/ocular": "^1.8.1",
diff --git a/docs/2.3/extensions/embed.md b/docs/2.3/extensions/embed.md
new file mode 100644
index 0000000000..517ea67e69
--- /dev/null
+++ b/docs/2.3/extensions/embed.md
@@ -0,0 +1,152 @@
+---
+layout: default
+title: Embed Extension
+description: The EmbedExtension supports embedding rich content from other websites.
+---
+
+# Embed Extension
+
+This extension can embed rich content (like videos, tweets, etc.) from other websites.
+
+The syntax is very simple - simply place any `https://` URL on its own line like this:
+
+```md
+Check out this video!
+
+https://www.youtube.com/watch?v=dQw4w9WgXcQ
+```
+
+If the link points to embeddable content, it will be replaced with the rich HTML needed to embed it:
+
+```html
+Check out this video:
+
+```
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+You'll also need to install a third-party [OEmbed](https://www.oembed.com/) library - see the [**Adapter**](#adapter) section below.
+
+## Usage
+
+Configure your `Environment` as usual and add the `EmbedExtension` provided by this package:
+
+```php
+use Embed\Embed;
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Embed\EmbedExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration
+$config = [
+ 'embed' => [
+ 'adapter' => new OscaroteroEmbedAdapter(), // See the "Adapter" documentation below
+ 'allowed_domains' => ['youtube.com', 'twitter.com', 'github.com'],
+ 'fallback' => 'link',
+ ],
+];
+
+// Configure the Environment with all whatever other extensions you want
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new EmbedExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('https://www.youtube.com/watch?v=dQw4w9WgXcQ');
+```
+
+## Configuration
+
+This extension supports the following configuration options under the `embed` configuration:
+
+### `adapter` option
+
+Any instance of `EmbedAdapterInterface` - see the "**[Adapter](#adapter)**" section below.
+
+### `allowed_domains` option
+
+This option defines a list of hosts that you wish to allow embedding content from. For example, setting this to
+`['youtube.com']` would only allow videos from YouTube to be embedded.
+It's extremely important that you only include websites you trust since they'll be providing HTML that is directly embedded in your website.
+
+Any subdomains of these domains will also be allowed. For example, `['youtube.com']` would allow embedding from `youtube.com` or `www.youtube.com`.
+
+As an additional safety measure, we recommend that you also use a [Content Security Policy (CSP)](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP)
+to prevent unexpected content from being embedded.
+
+By default, this option is an empty array (`[]`), which means that all domains are allowed.
+
+### `fallback` option
+
+This options defines the behavior when a URL cannot be embedded, either because it's not in the list of `allowed_domains`,
+or because the `adapter` could not find embeddable content for that URL.
+
+There are two possible values for this option:
+
+- `'link'` - the URL will be kept in the document as a link (**default**)
+-`'remove'` - the URL will be completely removed from the document
+
+## Adapter
+
+`league/commonmark` doesn't know how to obtain the embeddable HTML for a given URL - this must be done by an external library.
+
+### `embed/embed` Adapter
+
+We do provide an adapter for the popular [`embed/embed`](https://github.com/oscarotero/Embed) library. if you'd like to use that. We like this library
+because it supports fetching multiple URLs in parallel, which is ideal for performance, and it supports a wide range
+of embeddable content.
+
+To use that library, you'll need to `composer install embed/embed` and then pass `new OscaroteroEmbedAdapter()` as the `adapter`
+configuration option, as shown in the [**Usage**](#usage) section above.
+
+Need to customize the maximum width/height of the embedded content? You can do that by instantiating the service provided by
+`embed/embed`, [configuring it as needed](https://github.com/oscarotero/Embed#settings), and passing that customized instance into the adapter:
+
+```php
+use Embed\Embed;
+use League\CommonMark\Extension\Embed\Bridge\OscaroteroEmbedAdapter;
+
+// Configure the Embed library itself
+$embedLibrary = new Embed();
+$embedLibrary->setSettings([
+ 'oembed:query_parameters' => [
+ 'maxwidth' => 800,
+ 'maxheight' => 600,
+ ],
+ 'twitch:parent' => 'example.com',
+ 'facebook:token' => '1234|5678',
+ 'instagram:token' => '1234|5678',
+ 'twitter:token' => 'asdf',
+]);
+
+// Inject it into our adapter
+$config = [
+ 'adapter' => new OscaroteroEmbedAdapter($embedLibrary),
+];
+
+// Instantiate your CommonMark environment and converter like usual
+// ...
+```
+
+### Custom Adapter
+
+If you prefer to use a different library, you'll need to implement our `EmbedAdapterInterface` yourself with
+[whatever OEmbed library](https://packagist.org/?tags=oembed) you choose.
+
+## Tips
+
+If you need to wrap the HTML in a container tag, consider using the [`HtmlDecorator` renderer](/2.3/customization/rendering/#wrapping-elements-with-htmldecorator):
+
+```php
+$environment->addRenderer(Embed::class, new HtmlDecorator(new EmbedRenderer(), 'div', ['class' => 'embeded-content']));
+```
diff --git a/docs/2.3/extensions/overview.md b/docs/2.3/extensions/overview.md
index 1217e165ce..8000d77e48 100644
--- a/docs/2.3/extensions/overview.md
+++ b/docs/2.3/extensions/overview.md
@@ -22,6 +22,7 @@ to enhance your experience out-of-the-box depending on your specific use-cases.
| [Default Attributes] | Easily apply default HTML classes using configuration options to match your site's styles | `2.0.0` | |
| [Description Lists] | Create `` description lists using Markdown Extra's syntax | `2.0.0` | |
| [Disallowed Raw HTML] | Disables certain kinds of HTML tags that could affect page rendering | `1.3.0` | |
+| [Embed] | Embed rich content (like videos, tweets, and more) from other websites | `2.3.0` | |
| [External Links] | Tags external links with additional markup | `1.3.0` | |
| [Footnotes] | Add footnote references throughout the document and show a listing of them at the bottom | `1.5.0` | |
| [Front Matter] | Parses YAML front matter from your Markdown input | `2.0.0` | |
@@ -102,6 +103,7 @@ See the [Custom Extensions](/2.3/customization/extensions/) page for details on
[Default Attributes]: /2.3/extensions/default-attributes/
[Description Lists]: /2.3/extensions/description-lists/
[Disallowed Raw HTML]: /2.3/extensions/disallowed-raw-html/
+[Embed]: /2.3/extensions/embed/
[External Links]: /2.3/extensions/external-links/
[Footnotes]: /2.3/extensions/footnotes/
[Front Matter]: /2.3/extensions/front-matter/
diff --git a/docs/_data/menu.yml b/docs/_data/menu.yml
index 43900f21f2..ba92374502 100644
--- a/docs/_data/menu.yml
+++ b/docs/_data/menu.yml
@@ -20,6 +20,7 @@ version:
'Default Attributes': '/2.3/extensions/default-attributes/'
'Description Lists': '/2.3/extensions/description-lists/'
'Disallowed Raw HTML': '/2.3/extensions/disallowed-raw-html/'
+ 'Embed': '/2.3/extensions/embed/'
'External Links': '/2.3/extensions/external-links/'
'Footnotes': '/2.3/extensions/footnotes/'
'Heading Permalinks': '/2.3/extensions/heading-permalinks/'
diff --git a/src/Extension/Embed/Bridge/OscaroteroEmbedAdapter.php b/src/Extension/Embed/Bridge/OscaroteroEmbedAdapter.php
new file mode 100644
index 0000000000..5335eea59e
--- /dev/null
+++ b/src/Extension/Embed/Bridge/OscaroteroEmbedAdapter.php
@@ -0,0 +1,49 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed\Bridge;
+
+use Embed\Embed as EmbedLib;
+use League\CommonMark\Extension\Embed\Embed;
+use League\CommonMark\Extension\Embed\EmbedAdapterInterface;
+
+final class OscaroteroEmbedAdapter implements EmbedAdapterInterface
+{
+ private EmbedLib $embedLib;
+
+ public function __construct(?EmbedLib $embed = null)
+ {
+ if ($embed === null) {
+ if (! \class_exists(EmbedLib::class)) {
+ throw new \RuntimeException('The embed/embed package is not installed. Please install it with Composer to use this adapter.');
+ }
+
+ $embed = new EmbedLib();
+ }
+
+ $this->embedLib = $embed;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function updateEmbeds(array $embeds): void
+ {
+ $extractors = $this->embedLib->getMulti(...\array_map(static fn (Embed $embed) => $embed->getUrl(), $embeds));
+ foreach ($extractors as $i => $extractor) {
+ if ($extractor->code !== null) {
+ $embeds[$i]->setEmbedCode($extractor->code->html);
+ }
+ }
+ }
+}
diff --git a/src/Extension/Embed/DomainFilteringAdapter.php b/src/Extension/Embed/DomainFilteringAdapter.php
new file mode 100644
index 0000000000..c42100f222
--- /dev/null
+++ b/src/Extension/Embed/DomainFilteringAdapter.php
@@ -0,0 +1,50 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+class DomainFilteringAdapter implements EmbedAdapterInterface
+{
+ private EmbedAdapterInterface $decorated;
+
+ private string $regex;
+
+ /**
+ * @param string[] $allowedDomains
+ */
+ public function __construct(EmbedAdapterInterface $decorated, array $allowedDomains)
+ {
+ $this->decorated = $decorated;
+ $this->regex = self::createRegex($allowedDomains);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function updateEmbeds(array $embeds): void
+ {
+ $this->decorated->updateEmbeds(\array_filter($embeds, function (Embed $embed): bool {
+ return \preg_match($this->regex, $embed->getUrl()) === 1;
+ }));
+ }
+
+ /**
+ * @param string[] $allowedDomains
+ */
+ private static function createRegex(array $allowedDomains): string
+ {
+ $allowedDomains = \array_map('preg_quote', $allowedDomains);
+
+ return '/^(?:https?:\/\/)?(?:[^.]+\.)*(' . \implode('|', $allowedDomains) . ')/';
+ }
+}
diff --git a/src/Extension/Embed/Embed.php b/src/Extension/Embed/Embed.php
new file mode 100644
index 0000000000..94c1980453
--- /dev/null
+++ b/src/Extension/Embed/Embed.php
@@ -0,0 +1,50 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+final class Embed extends AbstractBlock
+{
+ private string $url;
+ private ?string $embedCode;
+
+ public function __construct(string $url, ?string $embedCode = null)
+ {
+ parent::__construct();
+
+ $this->url = $url;
+ $this->embedCode = $embedCode;
+ }
+
+ public function getUrl(): string
+ {
+ return $this->url;
+ }
+
+ public function setUrl(string $url): void
+ {
+ $this->url = $url;
+ }
+
+ public function getEmbedCode(): ?string
+ {
+ return $this->embedCode;
+ }
+
+ public function setEmbedCode(?string $embedCode): void
+ {
+ $this->embedCode = $embedCode;
+ }
+}
diff --git a/src/Extension/Embed/EmbedAdapterInterface.php b/src/Extension/Embed/EmbedAdapterInterface.php
new file mode 100644
index 0000000000..9880a4393d
--- /dev/null
+++ b/src/Extension/Embed/EmbedAdapterInterface.php
@@ -0,0 +1,25 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+/**
+ * Interface for a service which updates the embed code(s) for the given array of embeds
+ */
+interface EmbedAdapterInterface
+{
+ /**
+ * @param Embed[] $embeds
+ */
+ public function updateEmbeds(array $embeds): void;
+}
diff --git a/src/Extension/Embed/EmbedExtension.php b/src/Extension/Embed/EmbedExtension.php
new file mode 100644
index 0000000000..616a837813
--- /dev/null
+++ b/src/Extension/Embed/EmbedExtension.php
@@ -0,0 +1,48 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\ConfigurableExtensionInterface;
+use League\Config\ConfigurationBuilderInterface;
+use Nette\Schema\Expect;
+
+final class EmbedExtension implements ConfigurableExtensionInterface
+{
+ public function configureSchema(ConfigurationBuilderInterface $builder): void
+ {
+ $builder->addSchema('embed', Expect::structure([
+ 'adapter' => Expect::type(EmbedAdapterInterface::class),
+ 'allowed_domains' => Expect::arrayOf('string')->default([]),
+ 'fallback' => Expect::anyOf('link', 'remove')->default('link'),
+ ]));
+ }
+
+ public function register(EnvironmentBuilderInterface $environment): void
+ {
+ $adapter = $environment->getConfiguration()->get('embed.adapter');
+ \assert($adapter instanceof EmbedAdapterInterface);
+
+ $allowedDomains = $environment->getConfiguration()->get('embed.allowed_domains');
+ if ($allowedDomains !== []) {
+ $adapter = new DomainFilteringAdapter($adapter, $allowedDomains);
+ }
+
+ $environment
+ ->addBlockStartParser(new EmbedStartParser(), 300)
+ ->addEventListener(DocumentParsedEvent::class, new EmbedProcessor($adapter, $environment->getConfiguration()->get('embed.fallback')))
+ ->addRenderer(Embed::class, new EmbedRenderer());
+ }
+}
diff --git a/src/Extension/Embed/EmbedParser.php b/src/Extension/Embed/EmbedParser.php
new file mode 100644
index 0000000000..e957caf82b
--- /dev/null
+++ b/src/Extension/Embed/EmbedParser.php
@@ -0,0 +1,62 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+class EmbedParser implements BlockContinueParserInterface
+{
+ private Embed $embed;
+
+ public function __construct(string $url)
+ {
+ $this->embed = new Embed($url);
+ }
+
+ public function getBlock(): AbstractBlock
+ {
+ return $this->embed;
+ }
+
+ public function isContainer(): bool
+ {
+ return false;
+ }
+
+ public function canHaveLazyContinuationLines(): bool
+ {
+ return false;
+ }
+
+ public function canContain(AbstractBlock $childBlock): bool
+ {
+ return false;
+ }
+
+ public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+ {
+ return BlockContinue::none();
+ }
+
+ public function addLine(string $line): void
+ {
+ }
+
+ public function closeBlock(): void
+ {
+ }
+}
diff --git a/src/Extension/Embed/EmbedProcessor.php b/src/Extension/Embed/EmbedProcessor.php
new file mode 100644
index 0000000000..5df099eb66
--- /dev/null
+++ b/src/Extension/Embed/EmbedProcessor.php
@@ -0,0 +1,60 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Node\NodeIterator;
+
+final class EmbedProcessor
+{
+ public const FALLBACK_REMOVE = 'remove';
+ public const FALLBACK_LINK = 'link';
+
+ private EmbedAdapterInterface $adapter;
+ private string $fallback;
+
+ public function __construct(EmbedAdapterInterface $adapter, string $fallback = self::FALLBACK_REMOVE)
+ {
+ $this->adapter = $adapter;
+ $this->fallback = $fallback;
+ }
+
+ public function __invoke(DocumentParsedEvent $event): void
+ {
+ $embeds = [];
+ foreach (new NodeIterator($event->getDocument()) as $node) {
+ if ($node instanceof Embed) {
+ $embeds[] = $node;
+ }
+ }
+
+ $this->adapter->updateEmbeds($embeds);
+
+ foreach ($embeds as $embed) {
+ if ($embed->getEmbedCode() !== null) {
+ continue;
+ }
+
+ if ($this->fallback === self::FALLBACK_REMOVE) {
+ $embed->detach();
+ } elseif ($this->fallback === self::FALLBACK_LINK) {
+ $paragraph = new Paragraph();
+ $paragraph->appendChild(new Link($embed->getUrl(), $embed->getUrl()));
+ $embed->replaceWith($paragraph);
+ }
+ }
+ }
+}
diff --git a/src/Extension/Embed/EmbedRenderer.php b/src/Extension/Embed/EmbedRenderer.php
new file mode 100644
index 0000000000..91655d88f2
--- /dev/null
+++ b/src/Extension/Embed/EmbedRenderer.php
@@ -0,0 +1,35 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+
+class EmbedRenderer implements NodeRendererInterface
+{
+ /**
+ * @param Embed $node
+ *
+ * {@inheritDoc}
+ *
+ * @psalm-suppress MoreSpecificImplementedParamType
+ */
+ public function render(Node $node, ChildNodeRendererInterface $childRenderer)
+ {
+ Embed::assertInstanceOf($node);
+
+ return $node->getEmbedCode() ?? '';
+ }
+}
diff --git a/src/Extension/Embed/EmbedStartParser.php b/src/Extension/Embed/EmbedStartParser.php
new file mode 100644
index 0000000000..951e212d80
--- /dev/null
+++ b/src/Extension/Embed/EmbedStartParser.php
@@ -0,0 +1,54 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Block\Document;
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+use League\CommonMark\Util\LinkParserHelper;
+
+class EmbedStartParser implements BlockStartParserInterface
+{
+ public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+ {
+ if ($cursor->isIndented() || $parserState->getParagraphContent() !== null || ! ($parserState->getLastMatchedBlockParser()->getBlock() instanceof Document)) {
+ return BlockStart::none();
+ }
+
+ // 0-3 leading spaces are okay
+ $cursor->advanceToNextNonSpaceOrTab();
+
+ // The line must begin with "https://"
+ if (! str_starts_with($cursor->getRemainder(), 'https://')) {
+ return BlockStart::none();
+ }
+
+ // A valid link must be found next
+ if (($dest = LinkParserHelper::parseLinkDestination($cursor)) === null) {
+ return BlockStart::none();
+ }
+
+ // Skip any trailing whitespace
+ $cursor->advanceToNextNonSpaceOrTab();
+
+ // We must be at the end of the line; otherwise, this link was not by itself
+ if (! $cursor->isAtEnd()) {
+ return BlockStart::none();
+ }
+
+ return BlockStart::of(new EmbedParser($dest))->at($cursor);
+ }
+}
diff --git a/tests/functional/Extension/Embed/Bridge/LocalFileClient.php b/tests/functional/Extension/Embed/Bridge/LocalFileClient.php
new file mode 100644
index 0000000000..defdff6a76
--- /dev/null
+++ b/tests/functional/Extension/Embed/Bridge/LocalFileClient.php
@@ -0,0 +1,102 @@
+
+ *
+ * Adapted from the embed/embed test suite,
+ * (c) 2017 Oscar Otero Marzoa, used under the MIT license.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Tests\Functional\Extension\Embed\Bridge;
+
+use Embed\Http\CurlClient;
+use Embed\Http\FactoryDiscovery;
+use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseFactoryInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\UriInterface;
+
+/**
+ * Decorator to cache requests into files
+ */
+final class LocalFileClient implements ClientInterface
+{
+ private string $path;
+ private ResponseFactoryInterface $responseFactory;
+ private ClientInterface $client;
+
+ public function __construct(string $path)
+ {
+ $this->path = $path;
+ $this->responseFactory = FactoryDiscovery::getResponseFactory();
+ $this->client = new CurlClient($this->responseFactory);
+ }
+
+ public function sendRequest(RequestInterface $request): ResponseInterface
+ {
+ $uri = $request->getUri();
+ $filename = $this->path . '/' . self::getFilename($uri);
+
+ if (\is_file($filename)) {
+ $response = $this->readResponse($filename);
+ } else {
+ $response = $this->client->sendRequest($request);
+ $this->saveResponse($response, $filename);
+ }
+
+ return $response;
+ }
+
+ public static function getFilename(UriInterface $uri): string
+ {
+ $query = $uri->getQuery();
+
+ return \sprintf(
+ '%s.%s%s.json',
+ $uri->getHost(),
+ \trim(\preg_replace('/[^\w.-]+/', '-', \strtolower($uri->getPath())) ?? '', '-'),
+ $query ? '.' . \md5($uri->getQuery()) : ''
+ );
+ }
+
+ private function readResponse(string $filename): ResponseInterface
+ {
+ $file = \file_get_contents($filename);
+ if ($file === false) {
+ throw new \InvalidArgumentException(\sprintf('Unable to read file "%s"', $filename));
+ }
+
+ $message = \json_decode($file, true, JSON_THROW_ON_ERROR);
+ $response = $this->responseFactory->createResponse($message['statusCode'], $message['reasonPhrase']);
+
+ foreach ($message['headers'] as $name => $value) {
+ $response = $response->withHeader($name, $value);
+ }
+
+ $body = $response->getBody();
+ $body->write($message['body']);
+ $body->rewind();
+
+ return $response;
+ }
+
+ private function saveResponse(ResponseInterface $response, string $filename): void
+ {
+ $message = [
+ 'headers' => $response->getHeaders(),
+ 'statusCode' => $response->getStatusCode(),
+ 'reasonPhrase' => $response->getReasonPhrase(),
+ 'body' => (string) $response->getBody(),
+ ];
+
+ \file_put_contents($filename, \json_encode($message, JSON_PRETTY_PRINT | JSON_THROW_ON_ERROR));
+ }
+}
diff --git a/tests/functional/Extension/Embed/Bridge/OscaroteroEmbedAdapterTest.php b/tests/functional/Extension/Embed/Bridge/OscaroteroEmbedAdapterTest.php
new file mode 100644
index 0000000000..d29b5f1d58
--- /dev/null
+++ b/tests/functional/Extension/Embed/Bridge/OscaroteroEmbedAdapterTest.php
@@ -0,0 +1,49 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Tests\Functional\Extension\Embed\Bridge;
+
+use Embed\Embed as EmbedLib;
+use Embed\Http\Crawler;
+use League\CommonMark\ConverterInterface;
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Embed\Bridge\OscaroteroEmbedAdapter;
+use League\CommonMark\Extension\Embed\EmbedExtension;
+use League\CommonMark\MarkdownConverter;
+use League\CommonMark\Tests\Functional\AbstractLocalDataTest;
+
+final class OscaroteroEmbedAdapterTest extends AbstractLocalDataTest
+{
+ /**
+ * {@inheritDoc}
+ */
+ protected function createConverter(array $config = []): ConverterInterface
+ {
+ $config['embed']['adapter'] = new OscaroteroEmbedAdapter(new EmbedLib(new Crawler(new LocalFileClient(__DIR__ . '/requests'))));
+
+ $environment = new Environment($config);
+ $environment->addExtension(new CommonMarkCoreExtension());
+ $environment->addExtension(new EmbedExtension());
+
+ return new MarkdownConverter($environment);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function dataProvider(): iterable
+ {
+ yield from $this->loadTests(__DIR__ . '/data');
+ }
+}
diff --git a/tests/functional/Extension/Embed/Bridge/data/youtube.html b/tests/functional/Extension/Embed/Bridge/data/youtube.html
new file mode 100644
index 0000000000..eb53c873f1
--- /dev/null
+++ b/tests/functional/Extension/Embed/Bridge/data/youtube.html
@@ -0,0 +1,2 @@
+Check out this video:
+
diff --git a/tests/functional/Extension/Embed/Bridge/data/youtube.md b/tests/functional/Extension/Embed/Bridge/data/youtube.md
new file mode 100644
index 0000000000..2ca332e9ee
--- /dev/null
+++ b/tests/functional/Extension/Embed/Bridge/data/youtube.md
@@ -0,0 +1,3 @@
+Check out this video:
+
+https://www.youtube.com/watch?v=dQw4w9WgXcQ
diff --git a/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.oembed.2879fe17dbfe688cfce2eef49bdcbde7.json b/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.oembed.2879fe17dbfe688cfce2eef49bdcbde7.json
new file mode 100644
index 0000000000..1fe850340b
--- /dev/null
+++ b/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.oembed.2879fe17dbfe688cfce2eef49bdcbde7.json
@@ -0,0 +1,48 @@
+{
+ "headers": {
+ "content-type": [
+ "application\/json"
+ ],
+ "vary": [
+ "Origin",
+ "X-Origin",
+ "Referer"
+ ],
+ "content-encoding": [
+ "gzip"
+ ],
+ "date": [
+ "Sat, 05 Feb 2022 22:51:33 GMT"
+ ],
+ "server": [
+ "scaffolding on HTTPServer2"
+ ],
+ "cache-control": [
+ "private"
+ ],
+ "content-length": [
+ "405"
+ ],
+ "x-xss-protection": [
+ "0"
+ ],
+ "x-frame-options": [
+ "SAMEORIGIN"
+ ],
+ "x-content-type-options": [
+ "nosniff"
+ ],
+ "alt-svc": [
+ "h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\""
+ ],
+ "Content-Location": [
+ "https:\/\/www.youtube.com\/oembed?format=json&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DdQw4w9WgXcQ"
+ ],
+ "X-Request-Time": [
+ "0.076 ms"
+ ]
+ },
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diff --git a/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.watch.04c89f4aa4477375b9a0ca246fd32cca.json b/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.watch.04c89f4aa4477375b9a0ca246fd32cca.json
new file mode 100644
index 0000000000..fb170b5704
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+++ b/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.watch.04c89f4aa4477375b9a0ca246fd32cca.json
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+ "alt-svc": [
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- `, `
- `, and `
- ` HTML using Markdown.
+
+## Installation
+
+This extension is bundled with `league/commonmark`. This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Usage
+
+Configure your `Environment` as usual and simply add the `DescriptionListExtension` provided by this package:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\DescriptionList\DescriptionListExtension;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add this extension
+$environment->addExtension(new DescriptionListExtension());
+
+// Instantiate the converter engine and start converting some Markdown!
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Some markdown goes here');
+```
+
+## Syntax
+
+The syntax is based directly on the rules and logic implemented by the [Markdown Extra library][link-markdown-extra-dl]. Here are some examples of sample Markdown input and HTML output demonstrating the syntax:
+
+```md
+Apple
+: Pomaceous fruit of plants of the genus Malus in
+ the family Rosaceae.
+: An American computer company.
+
+Orange
+: The fruit of an evergreen tree of the genus Citrus.
+```
+
+```html
+
-
+
- Apple +
- Pomaceous fruit of plants of the genus Malus in + the family Rosaceae. +
- An American computer company. + +
- Orange +
- The fruit of an evergreen tree of the genus Citrus. +
` +- `<textarea>` +- `<style>` +- `<xmp>` +- `<iframe>` +- `<noembed>` +- `<noframes>` +- `<script>` +- `<plaintext>` + +Filtering is done by replacing the leading `<` with the entity `<`. + +This is required by the [GFM spec](https://github.github.com/gfm/#disallowed-raw-html-extension-) because these particular tags could cause undesirable side-effects if a malicious user tries to introduce them. + +All other HTML tags are left untouched by this extension. + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +Configure your `Environment` as usual and simply add the `DisallowedRawHtmlExtension` provided by this package: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\DisallowedRawHtml\DisallowedRawHtmlExtension; +use League\CommonMark\MarkdownConverter; + +// Customize the extension's configuration if needed +// Default values are shown below - you can omit this configuration if you're happy with those defaults +// and don't want to customize them +$config = [ + 'disallowed_raw_html' => [ + 'disallowed_tags' => ['title', 'textarea', 'style', 'xmp', 'iframe', 'noembed', 'noframes', 'script', 'plaintext'], + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add this extension +$environment->addExtension(new DisallowedRawHtmlExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('I cannot change the page <title>anymore '); +``` + +## Configuration + +This extension can be configured by providing a `disallowed_raw_html` array with the following nested configuration options. The defaults are shown in the code example above. + +### `disallowed_tags` + +An `array` containing a list of tags that should be escaped. diff --git a/docs/2.3/extensions/external-links.md b/docs/2.3/extensions/external-links.md new file mode 100644 index 0000000000..0dab8a3f62 --- /dev/null +++ b/docs/2.3/extensions/external-links.md @@ -0,0 +1,157 @@ +--- +layout: default +title: External Links Extension +description: The ExternalLinksExtension detects external links and adjusts their HTML markup +--- + +# External Links Extension + +This extension can detect links to external sites and adjust the markup accordingly: + +- Make the links open in new tabs/windows +- Adds a `rel` attribute to the resulting `` tag with values like `"nofollow noopener noreferrer"` +- Optionally adds any custom HTML classes + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +Configure your `Environment` as usual and simply add the `ExternalLinkExtension` provided by this package: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\ExternalLink\ExternalLinkExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = [ + 'external_link' => [ + 'internal_hosts' => 'www.example.com', // TODO: Don't forget to set this! + 'open_in_new_window' => true, + 'html_class' => 'external-link', + 'nofollow' => '', + 'noopener' => 'external', + 'noreferrer' => 'external', + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add this extension +$environment->addExtension(new ExternalLinkExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('I successfully installed the+ Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. + Lorem ipsum dolor sit amet, consectetur adipiscing elit. + Morbi1 leo risus, porta ac consectetur ac. +
+++``` + +## Usage + +Configure your `Environment` as usual and simply add the `FootnoteExtension`: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\Footnote\FootnoteExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +// Extension defaults are shown below +// If you're happy with the defaults, feel free to remove them from this array +$config = [ + 'footnote' => [ + 'backref_class' => 'footnote-backref', + 'backref_symbol' => '↩', + 'container_add_hr' => true, + 'container_class' => 'footnotes', + 'ref_class' => 'footnote-ref', + 'ref_id_prefix' => 'fnref:', + 'footnote_class' => 'footnote', + 'footnote_id_prefix' => 'fn:', + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add the extension +$environment->addExtension(new FootnoteExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('# Hello World!'); +``` + +## Configuration + +This extension can be configured by providing a `footnote` array with several nested configuration options. The defaults are shown in the code example above. + +### `backref_class` + +This `string` option defines which HTML class should be assigned to rendered footnote backreference elements. + +### `backref_symbol` + +This `string` option sets the symbol used as the contents of the footnote backreference link. It defaults to `\League\CommonMark\Extension\Footnote\Renderer\FootnoteBackrefRenderer::DEFAULT_SYMBOL = '↩'`. + +If you want to use a custom icon, set this to an empty string `''` and take a look at the [Adding Icons](#adding-icons) section below. + +> Note: Special HTML characters (`" & < >`) provided here will be escaped for security reasons. + +### `container_add_hr` + +This `boolean` option controls whether an `
+-
+
-
+
+ Elit Malesuada Ridiculus ↩ +
+
+
` element should be added inside the container. Set this to `false` if you want more control over how the footnote section at the bottom is differentiated from the rest of the document. + +### `container_class` + +This `string` option defines which HTML class should be assigned to the container at the bottom of the page which shows all the footnotes. + +### `ref_class` + +This `string` option defines which HTML class should be assigned to rendered footnote reference elements. + +### `ref_id_prefix` + +This `string` option defines the prefix prepended to footnote references. + +### `footnote_class` + +This `string` option defines which HTML class should be assigned to rendered footnote elements. + +### `footnote_id_prefix` + +This `string` option defines the prefix prepended to footnote elements. + +## Adding Icons + +You can use CSS to add a custom icon instead of providing a `symbol`: + +```php +$config = [ + 'footnote' => [ + 'backref_class' => 'footnote-backref', + 'symbol' => '', + ], +]; +``` + +Then target the `backref_class` given in the configuration in your CSS: + +```css +/** + * Custom SVG Icon. + */ +.footnote-backref::after { + display: inline-block; + content: ""; + /** + * Octicon Link (https://iconify.design/icon-sets/octicon/link.html) + * [Pro Tip] Use an SVG URL encoder (https://yoksel.github.io/url-encoder). + */ + background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' aria-hidden='true' style='-ms-transform:rotate(360deg);-webkit-transform:rotate(360deg)' viewBox='0 0 16 16' transform='rotate(360)'%3E%3Cpath fill-rule='evenodd' d='M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z' fill='%23626262'/%3E%3C/svg%3E"); + background-repeat: no-repeat; + background-size: 1em; +} +``` diff --git a/docs/2.3/extensions/front-matter.md b/docs/2.3/extensions/front-matter.md new file mode 100644 index 0000000000..9cb48a27ae --- /dev/null +++ b/docs/2.3/extensions/front-matter.md @@ -0,0 +1,150 @@ +--- +layout: default +title: Front Matter Extension +description: The Front Matter extension automatically parses YAML front matter from your Markdown. +--- + +# Front Matter Extension + +The `FrontMatterExtension` adds the ability to parse YAML front matter from the Markdown document and include that in the return result. + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +You will also need to install `symfony/yaml` or the [YAML extension for PHP](https://www.php.net/manual/book.yaml.php) to use this extension. For `symfony/yaml`: + +```bash +composer require symfony/yaml +``` + +(You can use any version of `symfony/yaml` 2.3 or higher, though we recommend using 4.0 or higher.) + +## Front Matter Syntax + +This extension follows the [Jekyll Front Matter syntax](https://jekyllrb.com/docs/front-matter/). The front matter must be the first thing in the file and must take the form of valid YAML set between triple-dashed lines. Here is a basic example: + +```markdown +--- +layout: post +title: I Love Markdown +tags: + - test + - example +--- + +# Hello World! +``` + +This will produce a front matter array similar to this: + +```php +$parsedFrontMatter = [ + 'layout' => 'post', + 'title' => 'I Love Markdown', + 'tags' => [ + 'test', + 'example', + ], +]; +``` + +And the HTML output will only contain the one heading: + +```html +Hello World!
+``` + +## Usage + +Configure your `Environment` as usual and add the `FrontMatterExtension`: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;use League\CommonMark\Extension\FrontMatter\FrontMatterExtension; +use League\CommonMark\Extension\FrontMatter\Output\RenderedContentWithFrontMatter; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = []; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add the extension +$environment->addExtension(new FrontMatterExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); + +// A sample Markdown file with some front matter: +$markdown = <<convert($markdown); + +// Grab the front matter: +if ($result instanceof RenderedContentWithFrontMatter) { + $frontMatter = $result->getFrontMatter(); +} + +// Output the HTML using any of these: +echo $result; // implicit string cast +// or: +echo (string) $result; // explicit string cast +// or: +echo $result->getContent(); +``` + +### Parsing Front Matter Only + +You don't have to parse the entire file (including all the Markdown) if you only want the front matter. You can either instantiate the front matter parser yourself and call it directly, like this: + +```php +use League\CommonMark\Extension\FrontMatter\Data\LibYamlFrontMatterParser; +use League\CommonMark\Extension\FrontMatter\Data\SymfonyYamlFrontMatterParser; +use League\CommonMark\Extension\FrontMatter\FrontMatterParser; + +$markdown = '...'; // TODO: Load some Markdown content somehow + +// For `symfony/yaml` +$frontMatterParser = new FrontMatterParser(new SymfonyYamlFrontMatterParser()); +// For YAML extension +$frontMatterParser = new FrontMatterParser(new LibYamlFrontMatterParser()); +$result = $frontMatterParser->parse($markdown); + +var_dump($result->getFrontMatter()); // The parsed front matter +var_dump($result->getContent()); // Markdown content without the front matter +``` + +Or you can use the `getFrontMatterParser()` method from the extension: + +```php +use League\CommonMark\Extension\FrontMatter\FrontMatterExtension; + +$markdown = '...'; // TODO: Load some Markdown content somehow + +$frontMatterExtension = new FrontMatterExtension(); +$result = $frontMatterExtension->getFrontMatterParser()->parse($markdown); + +var_dump($result->getFrontMatter()); // The parsed front matter +var_dump($result->getContent()); // Markdown content without the front matter +``` + +This latter approach may be more convenient if you have already instantiated a `FrontMatterExtension` object you're adding to the `Environment` somewhere and just want to call that. diff --git a/docs/2.3/extensions/github-flavored-markdown.md b/docs/2.3/extensions/github-flavored-markdown.md new file mode 100644 index 0000000000..ae9e467a5e --- /dev/null +++ b/docs/2.3/extensions/github-flavored-markdown.md @@ -0,0 +1,67 @@ +--- +layout: default +title: GitHub-Flavored Markdown +description: The GithubFlavoredMarkdownExtension class includes all the GFM addons +--- + +# GitHub-Flavored Markdown + +You can manually add the GFM extension to your environment like this: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\GithubFlavoredMarkdownExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = []; + +// Configure the Environment with all the CommonMark and GFM parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); +$environment->addExtension(new GithubFlavoredMarkdownExtension()); + +$converter = new MarkdownConverter($environment); +echo $converter->convert('Hello GFM!'); +``` + +This will automatically include all of these sub-extensions/features for you: + +- [Autolinks](/2.3/extensions/autolinks/) +- [Disallowed Raw HTML](/2.3/extensions/disallowed-raw-html/) +- [Strikethrough](/2.3/extensions/strikethrough/) +- [Tables](/2.3/extensions/tables/) +- [Task Lists](/2.3/extensions/task-lists/) + +Or, if you only want a subset of GFM extensions, you can add them individually like this instead: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\Autolink\AutolinkExtension; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\DisallowedRawHtml\DisallowedRawHtmlExtension; +use League\CommonMark\Extension\Strikethrough\StrikethroughExtension; +use League\CommonMark\Extension\Table\TableExtension; +use League\CommonMark\Extension\TaskList\TaskListExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = []; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Remove any of the lines below if you don't want a particular feature +$environment->addExtension(new AutolinkExtension()); +$environment->addExtension(new DisallowedRawHtmlExtension()); +$environment->addExtension(new StrikethroughExtension()); +$environment->addExtension(new TableExtension()); +$environment->addExtension(new TaskListExtension()); + +$converter = new MarkdownConverter($environment); +echo $converter->convert('Hello GFM!'); +``` + +This extension relies on the `CommonMarkCoreExtension` being enabled, so [don't forget to include that](/2.3/extensions/commonmark/) too. diff --git a/docs/2.3/extensions/heading-permalinks.md b/docs/2.3/extensions/heading-permalinks.md new file mode 100644 index 0000000000..3ba6673b21 --- /dev/null +++ b/docs/2.3/extensions/heading-permalinks.md @@ -0,0 +1,222 @@ +--- +layout: default +title: Heading Permalink Extension +description: The HeadingPermalinkExtension makes all header elements linkable +--- + +# Heading Permalink Extension + +This extension makes all of your heading elements (` `, `
`, etc) linkable so that users can quickly grab a link to that specific part of the document - almost like the headings in this documentation! + +**Tip:** You can combine this with the [Table of Contents extension](/2.3/extensions/table-of-contents/) to automatically generate a list of links to the headings in your documents. + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +This extension can be added to any new `Environment`: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkExtension; +use League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkRenderer; +use League\CommonMark\MarkdownConverter; + +// Extension defaults are shown below +// If you're happy with the defaults, feel free to remove them from this array +$config = [ + 'heading_permalink' => [ + 'html_class' => 'heading-permalink', + 'id_prefix' => 'content', + 'fragment_prefix' => 'content', + 'insert' => 'before', + 'min_heading_level' => 1, + 'max_heading_level' => 6, + 'title' => 'Permalink', + 'symbol' => HeadingPermalinkRenderer::DEFAULT_SYMBOL, + 'aria_hidden' => true, + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add this extension +$environment->addExtension(new HeadingPermalinkExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('# Hello World!'); +``` + +## Configuration + +This extension can be configured by providing a `heading_permalink` array with several nested configuration options. The defaults are shown in the code example above. + +### `html_class` + +The value of this nested configuration option should be a `string` that you want set as the `` tag's `class` attribute. This defaults to `'heading-permalink'`. + +### `id_prefix` + +This should be a `string` you want prepended to HTML IDs. This prevents generating HTML ID attributes which might conflict with others in your stylesheet. A dash separator (`-`) will be added between the prefix and the ID. You can instead set this to an empty string (`''`) if you don't want a prefix. + +### `fragment_prefix` + +This should be a `string` you want prepended to the URL fragment in the link's `href` attribute. **This should typically be set to the same value as `id_prefix` for links to work properly.** However, you may not want to expose that same prefix in your URLs - in that case, you can set this to something different (even an empty string) and use JavaScript to "rewrite" them. + +For example, to emulate how GitHub heading permalinks work, set `id_prefix` to `'user-content'`, set `fragment_prefix` to `''`, and insert some JavaScript into the page like this: + +```js +var scrollToPermalink = function() { + var link = document.getElementById('user-content-' + window.location.hash); + if (link) { + link.scrollIntoView({behavior: 'smooth'}); + } +}; + +window.addEventListener('hashchange', scrollToPermalink); +if (window.location.hash) { + scrollToPermalink(); +} +``` + +### `insert` + +This controls whether the anchor is added to the beginning of the `
`, `
` etc. tag or to the end. Can be set to either `'before'` or `'after'`. + +### `min_heading_level` and `max_heading_level` + +These two settings control which headings should have permalinks added. By default, all 6 levels (`1`, `2`, `3`, `4`, `5`, and `6`) will have them. You can override this by setting the `min_heading_level` and/or `max_heading_level` to a different number (`int` value). + +### `symbol` + +This option sets the symbol used to display the permalink on the document. This defaults to `\League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkRenderer::DEFAULT_SYMBOL = '¶'`. + +If you want to use a custom icon, then set this to an empty string `''` and check out the [Adding Icons](#adding-icons) sections below. + +> Note: Special HTML characters (`" & < >`) provided here will be escaped for security reasons. + +### `title` + +This option sets the `title` attribute on the `` tag. This defaults to `'Permalink'`. + +### `aria_hidden` + +This option sets the `aria-hidden` attribute on the `` tag. This defaults to `aria-hidden="true"`. + +Setting this option to false would render the `` tag excluding the `aria-hidden` entirely. + +## Example + +If you wanted to style your headings exactly like this documentation page does, try this configuration! + +```php +$config = [ + 'heading_permalink' => [ + 'html_class' => 'heading-permalink', + 'insert' => 'after', + 'symbol' => '¶', + 'title' => "Permalink", + ], +]; +``` + +Along with this CSS: + +```css +.heading-permalink { + font-size: .8em; + vertical-align: super; + text-decoration: none; + color: transparent; +} + +h1:hover .heading-permalink, +h2:hover .heading-permalink, +h3:hover .heading-permalink, +h4:hover .heading-permalink, +h5:hover .heading-permalink, +h6:hover .heading-permalink, +.heading-permalink:hover { + text-decoration: none; + color: #777; +} +``` + +## Styling Ideas + +This library doesn't provide any CSS styling for the anchor element(s), but here are some ideas you could use in your own stylesheet. + +You could hide the icon until the user hovers over the heading: + +```css +.heading-permalink { + visibility: hidden; +} + +h1:hover .heading-permalink, +h2:hover .heading-permalink, +h3:hover .heading-permalink, +h4:hover .heading-permalink, +h5:hover .heading-permalink, +h6:hover .heading-permalink +{ + visibility: visible; +} +``` + +You could also float the symbol just a little bit left of the heading: + +```css +.heading-permalink { + float: left; + padding-right: 4px; + margin-left: -20px; + line-height: 1; +} +``` + +These are only ideas - feel free to customize this however you'd like! + +## Adding Icons + +You can also use CSS to add a custom icon instead of providing a `symbol`: + +```php +$config = [ + 'heading_permalink' => [ + 'html_class' => 'heading-permalink', + 'symbol' => '', + ], +]; +``` + +Then targeting the `html_class` given in the configuration in your CSS: + +```css +/** + * Custom SVG Icon. + */ +.heading-permalink::after { + display: inline-block; + content: ""; + /** + * Octicon Link (https://iconify.design/icon-sets/octicon/link.html) + * [Pro Tip] Use an SVG URL encoder (https://yoksel.github.io/url-encoder). + */ + background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' aria-hidden='true' style='-ms-transform:rotate(360deg);-webkit-transform:rotate(360deg)' viewBox='0 0 16 16' transform='rotate(360)'%3E%3Cpath fill-rule='evenodd' d='M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z' fill='%23626262'/%3E%3C/svg%3E"); + background-repeat: no-repeat; + background-size: 1em; +} +``` diff --git a/docs/2.3/extensions/inlines-only.md b/docs/2.3/extensions/inlines-only.md new file mode 100644 index 0000000000..a91f657011 --- /dev/null +++ b/docs/2.3/extensions/inlines-only.md @@ -0,0 +1,42 @@ +--- +layout: default +title: Inlines Only Extension +description: The InlinesOnlyExtension only enables parsing of inline elements +--- + +# Inlines Only Extension + +This extension configures the parser to only render inline elements - no paragraph tags, headers, code blocks, etc. This makes it perfect for commenting systems where you only want users having bold, italics, links, etc. + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +Although you normally add extra extensions along with [the default CommonMark Core extension](/2.3/extensions/commonmark/), we're not going to do that here, because this is essentially a slimmed-down version of the core extension: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\InlinesOnly\InlinesOnlyExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = []; + +// Create a new, empty environment +$environment = new Environment($config); + +// Add this extension +$environment->addExtension(new InlinesOnlyExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('**Hello World!**'); +``` diff --git a/docs/2.3/extensions/mentions.md b/docs/2.3/extensions/mentions.md new file mode 100644 index 0000000000..f17c0a42d9 --- /dev/null +++ b/docs/2.3/extensions/mentions.md @@ -0,0 +1,269 @@ +--- +layout: default +title: Mention Parser +description: The MentionParser makes it easy to parse shortened references like @colinodell and #123 to custom URLs +--- + +# Mention Extension + +The `MentionExtension` makes it easy to parse shortened mentions and references like `@colinodell` to a Twitter URL +or `#123` to a GitHub issue URL. You can create your own custom syntax by defining which prefix you want to use and +how to generate the corresponding URL. + +## Usage + +You can create your own custom syntax by supplying the configuration with an array of options that +define the starting prefix, a regular expression to match against, and any custom URL template or callable to +generate the URL. + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\Mention\MentionExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration +$config = [ + 'mentions' => [ + // GitHub handler mention configuration. + // Sample Input: `@colinodell` + // Sample Output: `@colinodell` + 'github_handle' => [ + 'prefix' => '@', + 'pattern' => '[a-z\d](?:[a-z\d]|-(?=[a-z\d])){0,38}(?!\w)', + 'generator' => 'https://github.com/%s', + ], + // GitHub issue mention configuration. + // Sample Input: `#473` + // Sample Output: `#473` + 'github_issue' => [ + 'prefix' => '#', + 'pattern' => '\d+', + 'generator' => "https://github.com/thephpleague/commonmark/issues/%d", + ], + // Twitter handler mention configuration. + // Sample Input: `@colinodell` + // Sample Output: `@colinodell` + // Note: when registering more than one mention parser with the same prefix, the first mention parser to + // successfully match and return a properly constructed Mention object (where the URL has been set) will be the + // the mention parser that is used. In this example, the GitHub handle would actually match first because + // there isn't any real validation to check whether https://www.github.com/colinodell exists. However, in + // CMS applications, you could check whether its a local user first, then check Twitter and then GitHub, etc. + 'twitter_handle' => [ + 'prefix' => '@', + 'pattern' => '[A-Za-z0-9_]{1,15}(?!\w)', + 'generator' => 'https://twitter.com/%s', + ], + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add the Mention extension. +$environment->addExtension(new MentionExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('Follow me on GitHub: @colinodell'); +// Output: +//
Follow me on GitHub: @colinodell
+``` + +## String-Based URL Templates + +URL templates are perfect for situations where the identifier is inserted directly into a URL: + +```text +"@colinodell" => https://www.twitter.com/colinodell + ▲└────┬───┘ └───┬────┘ + │ │ │ +Prefix └───────────── Identifier ────────────┘ +``` + +Examples of using string-based URL templates can be seen in the usage example above - you simply provide a `string` to the `generator` option. + +Note that the URL template must be a string, and that the `%s` placeholder will be replaced by whatever the user enters after the prefix (in this case, `@`). You can use any prefix, regular expression pattern (without opening/closing delimiter or modifiers), or URL template you want! + +## Custom Callback-Based Parsers + +Need more power than simply adding the mention inside a string based URL template? The `MentionExtension` automatically +detects if the provided generator is an object that implements `\League\CommonMark\Extension\Mention\Generator\MentionGeneratorInterface` +or a valid [PHP callable](https://www.php.net/manual/en/language.types.callable.php) that can generate a +resulting URL. + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\Mention\Generator\MentionGeneratorInterface; +use League\CommonMark\Extension\Mention\Mention; +use League\CommonMark\Extension\Mention\MentionExtension; +use League\CommonMark\Node\Inline\AbstractInline; +use League\CommonMark\MarkdownConverter; + +// Define your configuration +$config = [ + 'mentions' => [ + 'github_handle' => [ + 'prefix' => '@', + 'pattern' => '[a-z\d](?:[a-z\d]|-(?=[a-z\d])){0,38}(?!\w)', + // The recommended approach is to provide a class that implements MentionGeneratorInterface. + 'generator' => new GithubUserMentionGenerator(), // TODO: Implement such a class yourself + ], + 'github_issue' => [ + 'prefix' => '#', + 'pattern' => '\d+', + // Alternatively, if your logic is simple, you can implement an inline anonymous class like this example. + 'generator' => new class implements MentionGeneratorInterface { + public function generateMention(Mention $mention): ?AbstractInline + { + $mention->setUrl(\sprintf('https://github.com/thephpleague/commonmark/issues/%d', $mention->getIdentifier())); + + return $mention; + } + }, + ], + 'github_issue' => [ + 'prefix' => '#', + 'pattern' => '\d+', + // Any type of callable, including anonymous closures, (with optional typehints) are also supported. + // This allows for better compatibility between different major versions of CommonMark. + // However, you sacrifice the ability to type-check which means automated development tools + // may not notice if your code is no longer compatible with new versions - you'll need to + // manually verify this yourself. + 'generator' => function ($mention) { + // Immediately return if not passed the supported Mention object. + // This is an example of the types of manual checks you'll need to perform if not using type hints + if (!($mention instanceof Mention)) { + return null; + } + + $mention->setUrl(\sprintf('https://github.com/thephpleague/commonmark/issues/%d', $mention->getIdentifier())); + + return $mention; + }, + ], + + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add the Mention extension. +$environment->addExtension(new MentionExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('Follow me on Twitter: @colinodell'); +// Output: +//Follow me on Twitter: @colinodell
+``` + +When implementing `MentionGeneratorInterface` or a simple callable, you'll receive a single `Mention` parameter and must either: + +- Return the same passed `Mention` object along with setting the URL; or, +- Return a new object that extends `\League\CommonMark\Inline\Element\AbstractInline`; or, +- Return `null` (and not set a URL on the `Mention` object) if the mention isn't a match and should be skipped; not parsed. + +Here's a faux-real-world example of how you might use such a generator for your application. Imagine you +want to parse `@username` into custom user profile links for your application, but only if the user exists. You could +create a class like the following which integrates with the framework your application is built on: + +```php +use League\CommonMark\Extension\Mention\Generator\MentionGeneratorInterface; +use League\CommonMark\Extension\Mention\Mention; +use League\CommonMark\Inline\Element\AbstractInline; + +class UserMentionGenerator implements MentionGeneratorInterface +{ + private $currentUser; + private $userRepository; + private $router; + + public function __construct (AccountInterface $currentUser, UserRepository $userRepository, Router $router) + { + $this->currentUser = $currentUser; + $this->userRepository = $userRepository; + $this->router = $router; + } + + public function generateMention(Mention $mention): ?AbstractInline + { + // Determine mention visibility (i.e. member privacy). + if (!$this->currentUser->hasPermission('access profiles')) { + $emphasis = new \League\CommonMark\Inline\Element\Emphasis(); + $emphasis->appendChild(new \League\CommonMark\Inline\Element\Text('[members only]')); + return $emphasis; + } + + // Locate the user that is mentioned. + $user = $this->userRepository->findUser($mention->getIdentifier()); + + // The mention isn't valid if the user does not exist. + if (!$user) { + return null; + } + + // Change the label. + $mention->setLabel($user->getFullName()); + // Use the path to their profile as the URL, typecasting to a string in case the service returns + // a __toString object; otherwise you will need to figure out a way to extract the string URL + // from the service. + $mention->setUrl((string) $this->router->generate('user_profile', ['id' => $user->getId()])); + + return $mention; + } +} +``` + +You can then hook this class up to a mention definition in the configuration to generate profile URLs from Markdown +mentions: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\Mention\MentionExtension; +use League\CommonMark\MarkdownConverter; + +// Grab your UserMentionGenerator somehow, perhaps from a DI container or instantiate it if needed +$userMentionGenerator = $container->get(UserMentionGenerator::class); + +// Define your configuration +$config = [ + 'mentions' => [ + 'user_url_generator' => [ + 'prefix' => '@', + 'pattern' => '[a-z0-9]+', + 'generator' => $userMentionGenerator, + ], + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add the Mention extension. +$environment->addExtension(new MentionExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('You should ask @colinodell about that'); + +// Output (if current user has permission to view profiles): +//You should ask Colin O'Dell about that
+// +// Output (if current user doesn't have has access to view profiles): +//You should ask [members only] about that
+``` + +## Rendering + +Whenever a mention is found, a `Mention` object is added to the [document's AST](/2.3/customization/abstract-syntax-tree/). +This object extends from `Link`, so it'll be rendered as a normal `` tag by default. + +If you need more control over the output you can implement a [custom renderer](/2.3/customization/rendering/) for the `Mention` type +and convert it to whatever HTML you wish! diff --git a/docs/2.3/extensions/overview.md b/docs/2.3/extensions/overview.md new file mode 100644 index 0000000000..1217e165ce --- /dev/null +++ b/docs/2.3/extensions/overview.md @@ -0,0 +1,116 @@ +--- +layout: default +title: Extensions Overview +description: An overview of the extensions included with this library +--- + +# Extensions Overview + +Extensions provide a simple way to add new syntax and features to the CommonMark parser. + +## Included Extensions + +Starting with version `1.3.0`, this library includes several extensions to support GitHub Flavored Markdown (GFM) and +many other common use-cases. Most of these extensions started out as 3rd-party community based extensions that have +since been officially adopted by this library in an effort to ensure future compatibility and to provide an easy way +to enhance your experience out-of-the-box depending on your specific use-cases. + +| Extension | Purpose | Version Introduced | GFM | +| --------- | ------- | ------------------ | --- | +| [Attributes] | Add HTML attributes (like `id` and `class`) from within the Markdown content | `1.5.0` | | +| [Autolinks] | Enables automatic linking of URLs within text without needing to wrap them with Markdown syntax | `1.3.0` | | +| [Default Attributes] | Easily apply default HTML classes using configuration options to match your site's styles | `2.0.0` | | +| [Description Lists] | Create `- ` description lists using Markdown Extra's syntax | `2.0.0` | |
+| [Disallowed Raw HTML] | Disables certain kinds of HTML tags that could affect page rendering | `1.3.0` | |
+| [External Links] | Tags external links with additional markup | `1.3.0` | |
+| [Footnotes] | Add footnote references throughout the document and show a listing of them at the bottom | `1.5.0` | |
+| [Front Matter] | Parses YAML front matter from your Markdown input | `2.0.0` | |
+| **[GitHub Flavored Markdown]** | Enables full support for GFM. Automatically includes the extensions noted in the `GFM` column (though you can certainly add them individually if you wish): | `1.3.0` | |
+| [Heading Permalinks] | Makes heading elements linkable | `1.4.0` | |
+| [Inlines Only] | Only includes standard CommonMark inline elements - perfect for handling comments and other short bits of text where you only want bold, italic, links, etc. | `1.3.0` | |
+| [Mentions] | Easy parsing of `@mention` and `#123`-style references | `1.5.0` | |
+| [Strikethrough] | Allows using tilde characters (`~~`) for ~strikethrough~ formatting | `1.3.0` | |
+| [Tables] | Enables you to create HTML tables | `1.3.0` | |
+| [Table of Contents] | Automatically inserts links to the headings at the top of your document | `1.4.0` | |
+| [Task Lists] | Allows the creation of task lists | `1.3.0` | |
+| [Smart Punctuation] | Intelligently converts ASCII quotes, dashes, and ellipses to their fancy Unicode equivalents | `1.3.0` | |
+
+## Usage
+
+You can enable extensions by simply calling `->addExtension()` on the [Environment](/2.3/customization/environment/).
+
+In an effort to streamline the extensions used in GitHub Flavored Markdown (GFM), a special extension named
+`GithubFlavoredMarkdownExtension` can be used that will automatically add all the extensions checked in the `GFM`
+column above for you:
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\GithubFlavoredMarkdownExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the extensions you need
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+$environment->addExtension(new GithubFlavoredMarkdownExtension());
+
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Hello World!');
+```
+
+Or maybe you only want a subset of GFM extensions, plus the [Smart Punctuation extension](/2.3/extensions/smart-punctuation/):
+
+```php
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\Autolink\AutolinkExtension;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\DisallowedRawHtml\DisallowedRawHtmlExtension;
+use League\CommonMark\Extension\SmartPunct\SmartPunctExtension;
+use League\CommonMark\Extension\Strikethrough\StrikethroughExtension;
+use League\CommonMark\Extension\Table\TableExtension;
+use League\CommonMark\MarkdownConverter;
+
+// Define your configuration, if needed
+$config = [];
+
+// Configure the Environment with all the CommonMark parsers/renderers
+$environment = new Environment($config);
+$environment->addExtension(new CommonMarkCoreExtension());
+
+// Add the other extensions you need
+$environment->addExtension(new AutolinkExtension());
+$environment->addExtension(new DisallowedRawHtmlExtension());
+$environment->addExtension(new SmartPunctExtension());
+$environment->addExtension(new StrikethroughExtension());
+$environment->addExtension(new TableExtension());
+
+$converter = new MarkdownConverter($environment);
+echo $converter->convert('Hello World!');
+```
+
+The extension system makes it easy to mix-and-match extensions to fit your needs.
+
+## Writing Custom Extensions
+
+See the [Custom Extensions](/2.3/customization/extensions/) page for details on how you can create your own custom extensions.
+
+[Attributes]: /2.3/extensions/attributes/
+[Autolinks]: /2.3/extensions/autolinks/
+[Default Attributes]: /2.3/extensions/default-attributes/
+[Description Lists]: /2.3/extensions/description-lists/
+[Disallowed Raw HTML]: /2.3/extensions/disallowed-raw-html/
+[External Links]: /2.3/extensions/external-links/
+[Footnotes]: /2.3/extensions/footnotes/
+[Front Matter]: /2.3/extensions/front-matter/
+[GitHub Flavored Markdown]: /2.3/extensions/github-flavored-markdown/
+[Heading Permalinks]: /2.3/extensions/heading-permalinks/
+[Inlines Only]: /2.3/extensions/inlines-only/
+[Mentions]: /2.3/extensions/mentions/
+[Strikethrough]: /2.3/extensions/strikethrough/
+[Tables]: /2.3/extensions/tables/
+[Table of Contents]: /2.3/extensions/table-of-contents/
+[Task Lists]: /2.3/extensions/task-lists/
+[Smart Punctuation]: /2.3/extensions/smart-punctuation/
diff --git a/docs/2.3/extensions/smart-punctuation.md b/docs/2.3/extensions/smart-punctuation.md
new file mode 100644
index 0000000000..1fc9a63632
--- /dev/null
+++ b/docs/2.3/extensions/smart-punctuation.md
@@ -0,0 +1,63 @@
+---
+layout: default
+title: Smart Punctuation Extension
+description: The SmartPunctExtension intelligently converts ASCII quotes, dashes, and ellipses to their Unicode equivalents
+---
+
+# Smart Punctuation Extension
+
+The `SmartPunctExtension` Intelligently converts ASCII quotes, dashes, and ellipses to their Unicode equivalents.
+
+For example, this Markdown...
+
+```markdown
+"CommonMark is the PHP League's Markdown parser," she said. "It's super-configurable... you can even use additional extensions to expand its capabilities -- just like this one!"
+```
+
+Will result in this HTML:
+
+```html
+
- + + +
- + + +
- + + +
-
+
-
+
-
+
+
-
+
-
+
-
+
- + + +
+ - + + +
+ -
+
+ -
+
+
-
+
+
-
+
- + + +
-
+
- + + +
+
“CommonMark is the PHP League’s Markdown parser,” she said. “It’s super-configurable… you can even use additional extensions to expand its capabilities – just like this one!”
+``` + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +Extensions can be added to any new `Environment`: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\SmartPunct\SmartPunctExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = [ + 'smartpunct' => [ + 'double_quote_opener' => '“', + 'double_quote_closer' => '”', + 'single_quote_opener' => '‘', + 'single_quote_closer' => '’', + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add this extension +$environment->addExtension(new SmartPunctExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('# Hello World!'); +``` diff --git a/docs/2.3/extensions/strikethrough.md b/docs/2.3/extensions/strikethrough.md new file mode 100644 index 0000000000..856efea980 --- /dev/null +++ b/docs/2.3/extensions/strikethrough.md @@ -0,0 +1,46 @@ +--- +layout: default +title: Strikethrough Extension +description: The StrikethroughExtension intelligently converts ASCII quotes, dashes, and ellipses to their Unicode equivalents +--- + +# Strikethrough Extension + +_(Note: this extension is included by default within [the GFM extension](/2.3/extensions/github-flavored-markdown/))_ + +This extension adds support for GFM-style strikethrough syntax. It allows users to use `~~` in order to indicate text that should be rendered within `` tags. + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +This extension can be added to any new `Environment`: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\Strikethrough\StrikethroughExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = []; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add this extension +$environment->addExtension(new StrikethroughExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('This extension is ~~really good~~ great!'); +``` diff --git a/docs/2.3/extensions/table-of-contents.md b/docs/2.3/extensions/table-of-contents.md new file mode 100644 index 0000000000..14e3b1d43d --- /dev/null +++ b/docs/2.3/extensions/table-of-contents.md @@ -0,0 +1,197 @@ +--- +layout: default +title: Table of Contents Extension +description: The Table of Contents extension automatically inserts links to the headings in your document. +--- + +# Table of Contents Extension + +The `TableOfContentsExtension` automatically inserts a table of contents into your document with links to the various headings. + +The [Heading Permalink](/2.3/extensions/heading-permalinks/) extension must also be included for this to work. + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +Configure your `Environment` as usual and simply add the `TableOfContentsExtension` and `HeadingPermalinkExtension` provided by this package: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkExtension; +use League\CommonMark\Extension\TableOfContents\TableOfContentsExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +// Extension defaults are shown below +// If you're happy with the defaults, feel free to remove them from this array +$config = [ + 'table_of_contents' => [ + 'html_class' => 'table-of-contents', + 'position' => 'top', + 'style' => 'bullet', + 'min_heading_level' => 1, + 'max_heading_level' => 6, + 'normalize' => 'relative', + 'placeholder' => null, + ], +]; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add the two extensions +$environment->addExtension(new HeadingPermalinkExtension()); +$environment->addExtension(new TableOfContentsExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('# Awesome!'); +``` + +## Configuration + +This extension can be configured by providing a `table_of_contents` array with several nested configuration options. The defaults are shown in the code example above. + +### `html_class` + +The value of this nested configuration option should be a `string` that you want set as the `- ` or `
- ` tag's `class` attribute. This defaults to `'table-of-contents'`.
+
+### `normalize`
+
+This should be a `string` that defines one of three different strategies to use when generating a (potentially-nested) list from your various headings:
+
+- `'flat'`
+- `'as-is'`
+- **`'relative'`** (default)
+
+See "[Normalization Strategies](#normalization-strategies)" below for more information.
+
+### `position`
+
+This `string` controls where in the document your table of contents will be placed. There are two options:
+
+- **`'top'`** (default) - Insert at the very top of the document, before any content
+- `'before-headings'` - Insert just before the very first heading - useful if you want to have some descriptive text show above the table of content.
+- `'placeholder'` - Location is manually defined by a user-provided placeholder somewhere in the document (see the `placeholder` option below)
+
+If you'd like to customize this further, you can implement a [custom event listener](/2.3/customization/event-dispatcher/#registering-listeners) to locate the `TableOfContents` node and reposition it somewhere else in the document prior to rendering.
+
+### `placeholder`
+
+When combined with `'position' => 'placeholder'`, this setting tells the extension which placeholder content should be replaced with the Table of Contents. For example, if you set this option to `[TOC]`, then any lines in your document consisting of that `[TOC]` placeholder will be replaced by the Table of Contents. Note that this option has no default value - you must provide this string yourself.
+
+### `style`
+
+This `string` option controls what style of HTML list should be used to render the table of contents:
+
+- **`'bullet'`** (default) - Unordered, bulleted list (`
- `)
+- `'ordered'` - Ordered list (`
- `)
+
+### `min_heading_level` and `max_heading_level`
+
+These two settings control which headings should appear in the list. By default, all 6 levels (`1`, `2`, `3`, `4`, `5`, and `6`). You can override this by setting the `min_heading_level` and/or `max_heading_level` to a different number (`int` value).
+
+## Normalization Strategies
+
+Consider this sample Markdown input:
+
+```markdown
+## Level 2 Heading
+
+This is a sample document that starts with a level 2 heading
+
+#### Level 4 Heading
+
+Notice how we went from a level 2 heading to a level 4 heading!
+
+### Level 3 Heading
+
+And now we have a level 3 heading here.
+```
+
+Here's how the different normalization strategies would handle this input:
+
+### Strategy: `'flat'`
+
+All links in your table of contents will be shown in a flat, single-level list:
+
+```html
+
-
+
`) will appear on the first level of the list, with level 2 headings (`
`) nested under those, and so forth - exactly as they occur within the document. But this can get weird if your document doesn't start with level 1 headings, or it doesn't properly nest the levels: + +```html +
-
+
-
+
+ +
+``` + +### Advanced + +```markdown +| header 1 | header 2 | header 2 | +| :------- | :------: | -------: | +| cell 1.1 | cell 1.2 | cell 1.3 | +| cell 2.1 | cell 2.2 | cell 2.3 | +``` + +## Configuration + +### Wrapping Container + +You can "wrap" the table with a container element by configuring the following options: + +- `enabled`: (`boolean`) Whether to wrap the table with a container element. Defaults to `false`. +- `tag`: (`string`) The tag name of the container element. Defaults to `div`. +- `attributes`: (`array`) An array of attributes to apply to the container element. Defaults to `[]`. + +For example, to wrap all tables within a `+ + + +th +th(center) +th(right)/th> + + + +td +td +td +` container element: + +```php +$config = [ + 'table' => [ + 'wrap' => [ + 'enabled' => true, + 'tag' => 'div', + 'attributes' => ['class' => 'table-responsive'], + ], + ], +]; +``` + +## Credits + +The Table functionality was originally built by [Martin Hasoň](https://github.com/hason) and [Webuni s.r.o.](https://www.webuni.cz) before it was merged into the core parser. diff --git a/docs/2.3/extensions/task-lists.md b/docs/2.3/extensions/task-lists.md new file mode 100644 index 0000000000..39f1834f40 --- /dev/null +++ b/docs/2.3/extensions/task-lists.md @@ -0,0 +1,55 @@ +--- +layout: default +title: Task List Extension +description: The TaskListExtension adds support for GFM-style task lists +--- + +# Task List Extension + +_(Note: this extension is included by default within [the GFM extension](/2.3/extensions/github-flavored-markdown/))_ + +This extension adds support for [GFM-style task lists](https://github.github.com/gfm/#task-list-items-extension-). + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +See the [installation](/2.3/installation/) section for more details. + +## Usage + +Configure your `Environment` as usual and simply add the `TaskListExtension` provided by this package: + +```php +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\TaskList\TaskListExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration, if needed +$config = []; + +// Configure the Environment with all the CommonMark parsers/renderers +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add this extension +$environment->addExtension(new TaskListExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); + +$markdown = <<convert($markdown); +``` + +Please note that this extension doesn't provide any JavaScript functionality to handle people checking and unchecking boxes - you'll need to implement that yourself if needed. diff --git a/docs/2.3/index.md b/docs/2.3/index.md new file mode 100644 index 0000000000..72fbe6f788 --- /dev/null +++ b/docs/2.3/index.md @@ -0,0 +1,44 @@ +--- +layout: default +title: Overview +--- + +
+
+# Overview
+
+[](https://twitter.com/colinodell)
+[](https://packagist.org/packages/league/commonmark)
+[](https://packagist.org/packages/league/commonmark)
+[](LICENSE)
+[](https://github.com/thephpleague/commonmark/actions?query=workflow%3ATests+branch%3Amain)
+[](https://scrutinizer-ci.com/g/thephpleague/commonmark/code-structure)
+[](https://scrutinizer-ci.com/g/thephpleague/commonmark)
+
+{{ site.data.project.highlights.description }}
+
+## Installation
+
+This library can be installed via Composer:
+
+```bash
+composer require league/commonmark
+```
+
+See the [installation](/2.3/installation/) section for more details.
+
+## Basic Usage
+
+Simply instantiate the converter and start converting some Markdown to HTML!
+
+```php
+use League\CommonMark\CommonMarkConverter;
+
+$converter = new CommonMarkConverter();
+echo $converter->convert('# Hello World!');
+
+// Hello World!
+``` + + +**Important:** See the [basic usage](/2.3/basic-usage/) and [security](/2.3/security/) sections for important details. diff --git a/docs/2.3/installation.md b/docs/2.3/installation.md new file mode 100644 index 0000000000..effe16973d --- /dev/null +++ b/docs/2.3/installation.md @@ -0,0 +1,19 @@ +--- +layout: default +title: Installation +description: Instructions on how to install the league/commonmark library +--- + +# Installation + +The recommended installation method is via Composer. + +```bash +composer require "league/commonmark:^2.3" +``` + +Ensure that you’ve set up your project to [autoload Composer-installed packages](https://getcomposer.org/doc/01-basic-usage.md#autoloading). + +## Versioning + +[SemVer](http://semver.org/) will be followed closely. **It's highly recommended that you use [Composer's caret operator](https://getcomposer.org/doc/articles/versions.md#caret-version-range-) to ensure compatibility**; for example: `^2.3`. This is equivalent to `>=2.3 <3.0`. diff --git a/docs/2.3/security.md b/docs/2.3/security.md new file mode 100644 index 0000000000..caf37094ab --- /dev/null +++ b/docs/2.3/security.md @@ -0,0 +1,92 @@ +--- +layout: default +title: Security +description: How to configure league/commonmark against possible security issues when handling untrusted user input +--- + +# Security + +In order to be fully compliant with the CommonMark spec, certain security settings are disabled by default. You will want to configure these settings if untrusted users will be providing the Markdown content: + +- `html_input`: How to handle raw HTML +- `allow_unsafe_links`: Whether unsafe links are permitted +- `max_nesting_level`: Protected against long render times or segfaults + +Further information about each option can be found below. + +## HTML Input + +**All HTML input is unescaped by default.** This behavior ensures that league/commonmark is 100% compliant with the CommonMark spec. + +If you're developing an application which renders user-provided Markdown from potentially untrusted users, you are **strongly** encouraged to set the `html_input` option in your configuration to either `escape` or `strip`: + +### Example - Escape all raw HTML input + +```php +use League\CommonMark\CommonMarkConverter; + +$converter = new CommonMarkConverter(['html_input' => 'escape']); +echo $converter->convert(''); + +// <script>alert("Hello XSS!");</script> +``` + +### Example - Strip all HTML from the input + +```php +use League\CommonMark\CommonMarkConverter; + +$converter = new CommonMarkConverter(['html_input' => 'strip']); +echo $converter->convert(''); + +// (empty output) +``` + +**Failing to set this option could make your site vulnerable to cross-site scripting (XSS) attacks!** + +See the [configuration](/2.3/configuration/) section for more information. + +## Unsafe Links + +Unsafe links are also allowed by default due to CommonMark spec compliance. An unsafe link is one that uses any of these protocols: + +- `javascript:` +- `vbscript:` +- `file:` +- `data:` (except for `data:image` in png, gif, jpeg, or webp format) + +To prevent these from being parsed and rendered, you should set the `allow_unsafe_links` option to `false`. + +## Nesting Level + +**No maximum nesting level is enforced by default.** Markdown content which is too deeply-nested (like 10,000 nested blockquotes: '> > > > > ...') [could result in long render times or segfaults](https://github.com/thephpleague/commonmark/issues/243#issuecomment-217580285). + +If you need to parse untrusted input, consider setting a reasonable `max_nesting_level` (perhaps 10-50) depending on your needs. Once this nesting level is hit, any subsequent Markdown will be rendered as plain text. + +### Example - Prevent deep nesting + +```php +use League\CommonMark\CommonMarkConverter; + +$markdown = str_repeat('> ', 10000) . ' Foo'; + +$converter = new CommonMarkConverter(['max_nesting_level' => 5]); +echo $converter->convert($markdown); + +//+//
+``` + +See the [configuration](/2.3/configuration/) section for more information. + +## Additional Filtering + +Although this library does offer these security features out-of-the-box, some users may opt to also run the HTML output through additional filtering layers (like HTMLPurifier). If you do this, make sure you **thoroughly** test your additional post-processing steps and configure them to work properly with the types of HTML elements and attributes that converted Markdown might produce, otherwise, you may end up with weird behavior like missing images, broken links, mismatched HTML tags, etc. diff --git a/docs/2.3/support.md b/docs/2.3/support.md new file mode 100644 index 0000000000..6531f9dbbc --- /dev/null +++ b/docs/2.3/support.md @@ -0,0 +1,23 @@ +--- +layout: default +title: Support +description: Get help with the league/commonmark library +--- + +# Support + +Here are some useful resources to help you use this project: + +- 📰 [Project README file](https://github.com/thephpleague/commonmark/blob/main/README.md) +- 📔 [Documentation](https://commonmark.thephpleague.com/2.3/) - you're reading it 😉 +- 💬 [Discussion forum](https://github.com/thephpleague/commonmark/discussions/categories/q-a) - **the best place to ask questions and get help** +- 🐛 [Issue tracker](https://github.com/thephpleague/commonmark/issues) - report issues, bugs, and feature requests +- 🥞 [StackOverflow](https://stackoverflow.com/search?q=php+commonmark) + +## Supported Versions + +See our [security policy](https://github.com/thephpleague/commonmark/blob/main/.github/SECURITY.md) for information about the support cycle for bug fixes and security updates. + +## Reporting a Vulnerability + +If you discover a security vulnerability within this package, please use the [Tidelift security contact form](https://tidelift.com/security) or email Colin O'Dell at+//
+//+//
+//+//
+//+//
+//> > > > > > > ... Foo
+ +``` + +Alternatively, if you already have a `Document` object you want to visualize in XML, you can use the`XmlRenderer` class to convert it to XML. + +## Return Value + +Like with `CommonMarkConverter::convert()`, the `renderDocument()` actually returns an instance of `League\CommonMark\Output\RenderedContentInterface`. You can cast this (implicitly, as shown above, or explicitly) to a `string` or call `getContent()` to get the final XML output. + +## Customizing the XML Output + +See the [rendering documentation](/2.3/customization/rendering/#xml-rendering) for information on customizing the XML output. diff --git a/docs/_data/menu.yml b/docs/_data/menu.yml index 578862243b..43900f21f2 100644 --- a/docs/_data/menu.yml +++ b/docs/_data/menu.yml @@ -1,4 +1,48 @@ version: + '2.3': + Getting Started: + 'Overview': '/2.3/' + 'Installation': '/2.3/installation/' + 'Upgrading from 2.0': '/2.3/upgrading/' + 'Changelog': '/2.3/changelog/' + 'Support': '/2.3/support/' + Usage: + 'Basic Usage': '/2.3/basic-usage/' + 'Configuration': '/2.3/configuration/' + 'Security': '/2.3/security/' + 'XML': '/2.3/xml/' + Extensions: + 'Overview': '/2.3/extensions/overview/' + 'CommonMark': '/2.3/extensions/commonmark/' + 'GitHub-Flavored Markdown': '/2.3/extensions/github-flavored-markdown/' + 'Attributes': '/2.3/extensions/attributes/' + 'Autolinks': '/2.3/extensions/autolinks/' + 'Default Attributes': '/2.3/extensions/default-attributes/' + 'Description Lists': '/2.3/extensions/description-lists/' + 'Disallowed Raw HTML': '/2.3/extensions/disallowed-raw-html/' + 'External Links': '/2.3/extensions/external-links/' + 'Footnotes': '/2.3/extensions/footnotes/' + 'Heading Permalinks': '/2.3/extensions/heading-permalinks/' + 'Inlines Only': '/2.3/extensions/inlines-only/' + 'Mentions': '/2.3/extensions/mentions/' + 'Smart Punctuation': '/2.3/extensions/smart-punctuation/' + 'Strikethrough': '/2.3/extensions/strikethrough/' + 'Table of Contents': '/2.3/extensions/table-of-contents/' + 'Tables': '/2.3/extensions/tables/' + 'Task Lists': '/2.3/extensions/task-lists/' + Customization: + 'Overview': '/2.3/customization/overview/' + 'Environment': '/2.3/customization/environment/' + 'Extensions': '/2.3/customization/extensions/' + 'Configuration': '/2.3/customization/configuration/' + 'Event Dispatcher': '/2.3/customization/event-dispatcher/' + 'Cursor': '/2.3/customization/cursor/' + 'Block Parsing': '/2.3/customization/block-parsing/' + 'Inline Parsing': '/2.3/customization/inline-parsing/' + 'Delimiter Processing': '/2.3/customization/delimiter-processing/' + 'Abstract Syntax Tree': '/2.3/customization/abstract-syntax-tree/' + 'Rendering': '/2.3/customization/rendering/' + 'Slug Normalizer': '/2.3/customization/slug-normalizer/' '2.2': Getting Started: 'Overview': '/2.2/' diff --git a/docs/_data/project.yml b/docs/_data/project.yml index eb72648f6e..b633dd7143 100644 --- a/docs/_data/project.yml +++ b/docs/_data/project.yml @@ -6,6 +6,9 @@ google_analytics_tracking_id: UA-137970568-1 repository: commonmark default_version: '2.2' releases: + next: + '2.3: + documentation_link: '/2.3/' current: '2.2': documentation_link: '/2.2/' From 6490a6a4afca165d4c09f3e8c372f89f41580845 Mon Sep 17 00:00:00 2001 From: Colin O'Dell+ + +Hello + +World! +Check out this video:
+ +``` + +## Installation + +This extension is bundled with `league/commonmark`. This library can be installed via Composer: + +```bash +composer require league/commonmark +``` + +You'll also need to install a third-party [OEmbed](https://www.oembed.com/) library - see the [**Adapter**](#adapter) section below. + +## Usage + +Configure your `Environment` as usual and add the `EmbedExtension` provided by this package: + +```php +use Embed\Embed; +use League\CommonMark\Environment\Environment; +use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; +use League\CommonMark\Extension\Embed\EmbedExtension; +use League\CommonMark\MarkdownConverter; + +// Define your configuration +$config = [ + 'embed' => [ + 'adapter' => new OscaroteroEmbedAdapter(), // See the "Adapter" documentation below + 'allowed_domains' => ['youtube.com', 'twitter.com', 'github.com'], + 'fallback' => 'link', + ], +]; + +// Configure the Environment with all whatever other extensions you want +$environment = new Environment($config); +$environment->addExtension(new CommonMarkCoreExtension()); + +// Add this extension +$environment->addExtension(new EmbedExtension()); + +// Instantiate the converter engine and start converting some Markdown! +$converter = new MarkdownConverter($environment); +echo $converter->convert('https://www.youtube.com/watch?v=dQw4w9WgXcQ'); +``` + +## Configuration + +This extension supports the following configuration options under the `embed` configuration: + +### `adapter` option + +Any instance of `EmbedAdapterInterface` - see the "**[Adapter](#adapter)**" section below. + +### `allowed_domains` option + +This option defines a list of hosts that you wish to allow embedding content from. For example, setting this to +`['youtube.com']` would only allow videos from YouTube to be embedded. +It's extremely important that you only include websites you trust since they'll be providing HTML that is directly embedded in your website. + +Any subdomains of these domains will also be allowed. For example, `['youtube.com']` would allow embedding from `youtube.com` or `www.youtube.com`. + +As an additional safety measure, we recommend that you also use a [Content Security Policy (CSP)](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP) +to prevent unexpected content from being embedded. + +By default, this option is an empty array (`[]`), which means that all domains are allowed. + +### `fallback` option + +This options defines the behavior when a URL cannot be embedded, either because it's not in the list of `allowed_domains`, +or because the `adapter` could not find embeddable content for that URL. + +There are two possible values for this option: + +- `'link'` - the URL will be kept in the document as a link (**default**) +-`'remove'` - the URL will be completely removed from the document + +## Adapter + +`league/commonmark` doesn't know how to obtain the embeddable HTML for a given URL - this must be done by an external library. + +### `embed/embed` Adapter + +We do provide an adapter for the popular [`embed/embed`](https://github.com/oscarotero/Embed) library. if you'd like to use that. We like this library +because it supports fetching multiple URLs in parallel, which is ideal for performance, and it supports a wide range +of embeddable content. + +To use that library, you'll need to `composer install embed/embed` and then pass `new OscaroteroEmbedAdapter()` as the `adapter` +configuration option, as shown in the [**Usage**](#usage) section above. + +Need to customize the maximum width/height of the embedded content? You can do that by instantiating the service provided by +`embed/embed`, [configuring it as needed](https://github.com/oscarotero/Embed#settings), and passing that customized instance into the adapter: + +```php +use Embed\Embed; +use League\CommonMark\Extension\Embed\Bridge\OscaroteroEmbedAdapter; + +// Configure the Embed library itself +$embedLibrary = new Embed(); +$embedLibrary->setSettings([ + 'oembed:query_parameters' => [ + 'maxwidth' => 800, + 'maxheight' => 600, + ], + 'twitch:parent' => 'example.com', + 'facebook:token' => '1234|5678', + 'instagram:token' => '1234|5678', + 'twitter:token' => 'asdf', +]); + +// Inject it into our adapter +$config = [ + 'adapter' => new OscaroteroEmbedAdapter($embedLibrary), +]; + +// Instantiate your CommonMark environment and converter like usual +// ... +``` + +### Custom Adapter + +If you prefer to use a different library, you'll need to implement our `EmbedAdapterInterface` yourself with +[whatever OEmbed library](https://packagist.org/?tags=oembed) you choose. + +## Tips + +If you need to wrap the HTML in a container tag, consider using the [`HtmlDecorator` renderer](/2.3/customization/rendering/#wrapping-elements-with-htmldecorator): + +```php +$environment->addRenderer(Embed::class, new HtmlDecorator(new EmbedRenderer(), 'div', ['class' => 'embeded-content'])); +``` diff --git a/docs/2.3/extensions/overview.md b/docs/2.3/extensions/overview.md index 1217e165ce..8000d77e48 100644 --- a/docs/2.3/extensions/overview.md +++ b/docs/2.3/extensions/overview.md @@ -22,6 +22,7 @@ to enhance your experience out-of-the-box depending on your specific use-cases. | [Default Attributes] | Easily apply default HTML classes using configuration options to match your site's styles | `2.0.0` | | | [Description Lists] | Create `- ` description lists using Markdown Extra's syntax | `2.0.0` | |
| [Disallowed Raw HTML] | Disables certain kinds of HTML tags that could affect page rendering | `1.3.0` | |
+| [Embed] | Embed rich content (like videos, tweets, and more) from other websites | `2.3.0` | |
| [External Links] | Tags external links with additional markup | `1.3.0` | |
| [Footnotes] | Add footnote references throughout the document and show a listing of them at the bottom | `1.5.0` | |
| [Front Matter] | Parses YAML front matter from your Markdown input | `2.0.0` | |
@@ -102,6 +103,7 @@ See the [Custom Extensions](/2.3/customization/extensions/) page for details on
[Default Attributes]: /2.3/extensions/default-attributes/
[Description Lists]: /2.3/extensions/description-lists/
[Disallowed Raw HTML]: /2.3/extensions/disallowed-raw-html/
+[Embed]: /2.3/extensions/embed/
[External Links]: /2.3/extensions/external-links/
[Footnotes]: /2.3/extensions/footnotes/
[Front Matter]: /2.3/extensions/front-matter/
diff --git a/docs/_data/menu.yml b/docs/_data/menu.yml
index 43900f21f2..ba92374502 100644
--- a/docs/_data/menu.yml
+++ b/docs/_data/menu.yml
@@ -20,6 +20,7 @@ version:
'Default Attributes': '/2.3/extensions/default-attributes/'
'Description Lists': '/2.3/extensions/description-lists/'
'Disallowed Raw HTML': '/2.3/extensions/disallowed-raw-html/'
+ 'Embed': '/2.3/extensions/embed/'
'External Links': '/2.3/extensions/external-links/'
'Footnotes': '/2.3/extensions/footnotes/'
'Heading Permalinks': '/2.3/extensions/heading-permalinks/'
diff --git a/src/Extension/Embed/Bridge/OscaroteroEmbedAdapter.php b/src/Extension/Embed/Bridge/OscaroteroEmbedAdapter.php
new file mode 100644
index 0000000000..5335eea59e
--- /dev/null
+++ b/src/Extension/Embed/Bridge/OscaroteroEmbedAdapter.php
@@ -0,0 +1,49 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed\Bridge;
+
+use Embed\Embed as EmbedLib;
+use League\CommonMark\Extension\Embed\Embed;
+use League\CommonMark\Extension\Embed\EmbedAdapterInterface;
+
+final class OscaroteroEmbedAdapter implements EmbedAdapterInterface
+{
+ private EmbedLib $embedLib;
+
+ public function __construct(?EmbedLib $embed = null)
+ {
+ if ($embed === null) {
+ if (! \class_exists(EmbedLib::class)) {
+ throw new \RuntimeException('The embed/embed package is not installed. Please install it with Composer to use this adapter.');
+ }
+
+ $embed = new EmbedLib();
+ }
+
+ $this->embedLib = $embed;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function updateEmbeds(array $embeds): void
+ {
+ $extractors = $this->embedLib->getMulti(...\array_map(static fn (Embed $embed) => $embed->getUrl(), $embeds));
+ foreach ($extractors as $i => $extractor) {
+ if ($extractor->code !== null) {
+ $embeds[$i]->setEmbedCode($extractor->code->html);
+ }
+ }
+ }
+}
diff --git a/src/Extension/Embed/DomainFilteringAdapter.php b/src/Extension/Embed/DomainFilteringAdapter.php
new file mode 100644
index 0000000000..c42100f222
--- /dev/null
+++ b/src/Extension/Embed/DomainFilteringAdapter.php
@@ -0,0 +1,50 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+class DomainFilteringAdapter implements EmbedAdapterInterface
+{
+ private EmbedAdapterInterface $decorated;
+
+ private string $regex;
+
+ /**
+ * @param string[] $allowedDomains
+ */
+ public function __construct(EmbedAdapterInterface $decorated, array $allowedDomains)
+ {
+ $this->decorated = $decorated;
+ $this->regex = self::createRegex($allowedDomains);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function updateEmbeds(array $embeds): void
+ {
+ $this->decorated->updateEmbeds(\array_filter($embeds, function (Embed $embed): bool {
+ return \preg_match($this->regex, $embed->getUrl()) === 1;
+ }));
+ }
+
+ /**
+ * @param string[] $allowedDomains
+ */
+ private static function createRegex(array $allowedDomains): string
+ {
+ $allowedDomains = \array_map('preg_quote', $allowedDomains);
+
+ return '/^(?:https?:\/\/)?(?:[^.]+\.)*(' . \implode('|', $allowedDomains) . ')/';
+ }
+}
diff --git a/src/Extension/Embed/Embed.php b/src/Extension/Embed/Embed.php
new file mode 100644
index 0000000000..94c1980453
--- /dev/null
+++ b/src/Extension/Embed/Embed.php
@@ -0,0 +1,50 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+
+final class Embed extends AbstractBlock
+{
+ private string $url;
+ private ?string $embedCode;
+
+ public function __construct(string $url, ?string $embedCode = null)
+ {
+ parent::__construct();
+
+ $this->url = $url;
+ $this->embedCode = $embedCode;
+ }
+
+ public function getUrl(): string
+ {
+ return $this->url;
+ }
+
+ public function setUrl(string $url): void
+ {
+ $this->url = $url;
+ }
+
+ public function getEmbedCode(): ?string
+ {
+ return $this->embedCode;
+ }
+
+ public function setEmbedCode(?string $embedCode): void
+ {
+ $this->embedCode = $embedCode;
+ }
+}
diff --git a/src/Extension/Embed/EmbedAdapterInterface.php b/src/Extension/Embed/EmbedAdapterInterface.php
new file mode 100644
index 0000000000..9880a4393d
--- /dev/null
+++ b/src/Extension/Embed/EmbedAdapterInterface.php
@@ -0,0 +1,25 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+/**
+ * Interface for a service which updates the embed code(s) for the given array of embeds
+ */
+interface EmbedAdapterInterface
+{
+ /**
+ * @param Embed[] $embeds
+ */
+ public function updateEmbeds(array $embeds): void;
+}
diff --git a/src/Extension/Embed/EmbedExtension.php b/src/Extension/Embed/EmbedExtension.php
new file mode 100644
index 0000000000..616a837813
--- /dev/null
+++ b/src/Extension/Embed/EmbedExtension.php
@@ -0,0 +1,48 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\ConfigurableExtensionInterface;
+use League\Config\ConfigurationBuilderInterface;
+use Nette\Schema\Expect;
+
+final class EmbedExtension implements ConfigurableExtensionInterface
+{
+ public function configureSchema(ConfigurationBuilderInterface $builder): void
+ {
+ $builder->addSchema('embed', Expect::structure([
+ 'adapter' => Expect::type(EmbedAdapterInterface::class),
+ 'allowed_domains' => Expect::arrayOf('string')->default([]),
+ 'fallback' => Expect::anyOf('link', 'remove')->default('link'),
+ ]));
+ }
+
+ public function register(EnvironmentBuilderInterface $environment): void
+ {
+ $adapter = $environment->getConfiguration()->get('embed.adapter');
+ \assert($adapter instanceof EmbedAdapterInterface);
+
+ $allowedDomains = $environment->getConfiguration()->get('embed.allowed_domains');
+ if ($allowedDomains !== []) {
+ $adapter = new DomainFilteringAdapter($adapter, $allowedDomains);
+ }
+
+ $environment
+ ->addBlockStartParser(new EmbedStartParser(), 300)
+ ->addEventListener(DocumentParsedEvent::class, new EmbedProcessor($adapter, $environment->getConfiguration()->get('embed.fallback')))
+ ->addRenderer(Embed::class, new EmbedRenderer());
+ }
+}
diff --git a/src/Extension/Embed/EmbedParser.php b/src/Extension/Embed/EmbedParser.php
new file mode 100644
index 0000000000..e957caf82b
--- /dev/null
+++ b/src/Extension/Embed/EmbedParser.php
@@ -0,0 +1,62 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Cursor;
+
+class EmbedParser implements BlockContinueParserInterface
+{
+ private Embed $embed;
+
+ public function __construct(string $url)
+ {
+ $this->embed = new Embed($url);
+ }
+
+ public function getBlock(): AbstractBlock
+ {
+ return $this->embed;
+ }
+
+ public function isContainer(): bool
+ {
+ return false;
+ }
+
+ public function canHaveLazyContinuationLines(): bool
+ {
+ return false;
+ }
+
+ public function canContain(AbstractBlock $childBlock): bool
+ {
+ return false;
+ }
+
+ public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+ {
+ return BlockContinue::none();
+ }
+
+ public function addLine(string $line): void
+ {
+ }
+
+ public function closeBlock(): void
+ {
+ }
+}
diff --git a/src/Extension/Embed/EmbedProcessor.php b/src/Extension/Embed/EmbedProcessor.php
new file mode 100644
index 0000000000..5df099eb66
--- /dev/null
+++ b/src/Extension/Embed/EmbedProcessor.php
@@ -0,0 +1,60 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Event\DocumentParsedEvent;
+use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
+use League\CommonMark\Node\Block\Paragraph;
+use League\CommonMark\Node\NodeIterator;
+
+final class EmbedProcessor
+{
+ public const FALLBACK_REMOVE = 'remove';
+ public const FALLBACK_LINK = 'link';
+
+ private EmbedAdapterInterface $adapter;
+ private string $fallback;
+
+ public function __construct(EmbedAdapterInterface $adapter, string $fallback = self::FALLBACK_REMOVE)
+ {
+ $this->adapter = $adapter;
+ $this->fallback = $fallback;
+ }
+
+ public function __invoke(DocumentParsedEvent $event): void
+ {
+ $embeds = [];
+ foreach (new NodeIterator($event->getDocument()) as $node) {
+ if ($node instanceof Embed) {
+ $embeds[] = $node;
+ }
+ }
+
+ $this->adapter->updateEmbeds($embeds);
+
+ foreach ($embeds as $embed) {
+ if ($embed->getEmbedCode() !== null) {
+ continue;
+ }
+
+ if ($this->fallback === self::FALLBACK_REMOVE) {
+ $embed->detach();
+ } elseif ($this->fallback === self::FALLBACK_LINK) {
+ $paragraph = new Paragraph();
+ $paragraph->appendChild(new Link($embed->getUrl(), $embed->getUrl()));
+ $embed->replaceWith($paragraph);
+ }
+ }
+ }
+}
diff --git a/src/Extension/Embed/EmbedRenderer.php b/src/Extension/Embed/EmbedRenderer.php
new file mode 100644
index 0000000000..91655d88f2
--- /dev/null
+++ b/src/Extension/Embed/EmbedRenderer.php
@@ -0,0 +1,35 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+
+class EmbedRenderer implements NodeRendererInterface
+{
+ /**
+ * @param Embed $node
+ *
+ * {@inheritDoc}
+ *
+ * @psalm-suppress MoreSpecificImplementedParamType
+ */
+ public function render(Node $node, ChildNodeRendererInterface $childRenderer)
+ {
+ Embed::assertInstanceOf($node);
+
+ return $node->getEmbedCode() ?? '';
+ }
+}
diff --git a/src/Extension/Embed/EmbedStartParser.php b/src/Extension/Embed/EmbedStartParser.php
new file mode 100644
index 0000000000..951e212d80
--- /dev/null
+++ b/src/Extension/Embed/EmbedStartParser.php
@@ -0,0 +1,54 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Extension\Embed;
+
+use League\CommonMark\Node\Block\Document;
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+use League\CommonMark\Util\LinkParserHelper;
+
+class EmbedStartParser implements BlockStartParserInterface
+{
+ public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+ {
+ if ($cursor->isIndented() || $parserState->getParagraphContent() !== null || ! ($parserState->getLastMatchedBlockParser()->getBlock() instanceof Document)) {
+ return BlockStart::none();
+ }
+
+ // 0-3 leading spaces are okay
+ $cursor->advanceToNextNonSpaceOrTab();
+
+ // The line must begin with "https://"
+ if (! str_starts_with($cursor->getRemainder(), 'https://')) {
+ return BlockStart::none();
+ }
+
+ // A valid link must be found next
+ if (($dest = LinkParserHelper::parseLinkDestination($cursor)) === null) {
+ return BlockStart::none();
+ }
+
+ // Skip any trailing whitespace
+ $cursor->advanceToNextNonSpaceOrTab();
+
+ // We must be at the end of the line; otherwise, this link was not by itself
+ if (! $cursor->isAtEnd()) {
+ return BlockStart::none();
+ }
+
+ return BlockStart::of(new EmbedParser($dest))->at($cursor);
+ }
+}
diff --git a/tests/functional/Extension/Embed/Bridge/LocalFileClient.php b/tests/functional/Extension/Embed/Bridge/LocalFileClient.php
new file mode 100644
index 0000000000..defdff6a76
--- /dev/null
+++ b/tests/functional/Extension/Embed/Bridge/LocalFileClient.php
@@ -0,0 +1,102 @@
+
+ *
+ * Adapted from the embed/embed test suite,
+ * (c) 2017 Oscar Otero Marzoa, used under the MIT license.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Tests\Functional\Extension\Embed\Bridge;
+
+use Embed\Http\CurlClient;
+use Embed\Http\FactoryDiscovery;
+use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseFactoryInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\UriInterface;
+
+/**
+ * Decorator to cache requests into files
+ */
+final class LocalFileClient implements ClientInterface
+{
+ private string $path;
+ private ResponseFactoryInterface $responseFactory;
+ private ClientInterface $client;
+
+ public function __construct(string $path)
+ {
+ $this->path = $path;
+ $this->responseFactory = FactoryDiscovery::getResponseFactory();
+ $this->client = new CurlClient($this->responseFactory);
+ }
+
+ public function sendRequest(RequestInterface $request): ResponseInterface
+ {
+ $uri = $request->getUri();
+ $filename = $this->path . '/' . self::getFilename($uri);
+
+ if (\is_file($filename)) {
+ $response = $this->readResponse($filename);
+ } else {
+ $response = $this->client->sendRequest($request);
+ $this->saveResponse($response, $filename);
+ }
+
+ return $response;
+ }
+
+ public static function getFilename(UriInterface $uri): string
+ {
+ $query = $uri->getQuery();
+
+ return \sprintf(
+ '%s.%s%s.json',
+ $uri->getHost(),
+ \trim(\preg_replace('/[^\w.-]+/', '-', \strtolower($uri->getPath())) ?? '', '-'),
+ $query ? '.' . \md5($uri->getQuery()) : ''
+ );
+ }
+
+ private function readResponse(string $filename): ResponseInterface
+ {
+ $file = \file_get_contents($filename);
+ if ($file === false) {
+ throw new \InvalidArgumentException(\sprintf('Unable to read file "%s"', $filename));
+ }
+
+ $message = \json_decode($file, true, JSON_THROW_ON_ERROR);
+ $response = $this->responseFactory->createResponse($message['statusCode'], $message['reasonPhrase']);
+
+ foreach ($message['headers'] as $name => $value) {
+ $response = $response->withHeader($name, $value);
+ }
+
+ $body = $response->getBody();
+ $body->write($message['body']);
+ $body->rewind();
+
+ return $response;
+ }
+
+ private function saveResponse(ResponseInterface $response, string $filename): void
+ {
+ $message = [
+ 'headers' => $response->getHeaders(),
+ 'statusCode' => $response->getStatusCode(),
+ 'reasonPhrase' => $response->getReasonPhrase(),
+ 'body' => (string) $response->getBody(),
+ ];
+
+ \file_put_contents($filename, \json_encode($message, JSON_PRETTY_PRINT | JSON_THROW_ON_ERROR));
+ }
+}
diff --git a/tests/functional/Extension/Embed/Bridge/OscaroteroEmbedAdapterTest.php b/tests/functional/Extension/Embed/Bridge/OscaroteroEmbedAdapterTest.php
new file mode 100644
index 0000000000..d29b5f1d58
--- /dev/null
+++ b/tests/functional/Extension/Embed/Bridge/OscaroteroEmbedAdapterTest.php
@@ -0,0 +1,49 @@
+
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Tests\Functional\Extension\Embed\Bridge;
+
+use Embed\Embed as EmbedLib;
+use Embed\Http\Crawler;
+use League\CommonMark\ConverterInterface;
+use League\CommonMark\Environment\Environment;
+use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
+use League\CommonMark\Extension\Embed\Bridge\OscaroteroEmbedAdapter;
+use League\CommonMark\Extension\Embed\EmbedExtension;
+use League\CommonMark\MarkdownConverter;
+use League\CommonMark\Tests\Functional\AbstractLocalDataTest;
+
+final class OscaroteroEmbedAdapterTest extends AbstractLocalDataTest
+{
+ /**
+ * {@inheritDoc}
+ */
+ protected function createConverter(array $config = []): ConverterInterface
+ {
+ $config['embed']['adapter'] = new OscaroteroEmbedAdapter(new EmbedLib(new Crawler(new LocalFileClient(__DIR__ . '/requests'))));
+
+ $environment = new Environment($config);
+ $environment->addExtension(new CommonMarkCoreExtension());
+ $environment->addExtension(new EmbedExtension());
+
+ return new MarkdownConverter($environment);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function dataProvider(): iterable
+ {
+ yield from $this->loadTests(__DIR__ . '/data');
+ }
+}
diff --git a/tests/functional/Extension/Embed/Bridge/data/youtube.html b/tests/functional/Extension/Embed/Bridge/data/youtube.html
new file mode 100644
index 0000000000..eb53c873f1
--- /dev/null
+++ b/tests/functional/Extension/Embed/Bridge/data/youtube.html
@@ -0,0 +1,2 @@
+
Check out this video:
+ diff --git a/tests/functional/Extension/Embed/Bridge/data/youtube.md b/tests/functional/Extension/Embed/Bridge/data/youtube.md new file mode 100644 index 0000000000..2ca332e9ee --- /dev/null +++ b/tests/functional/Extension/Embed/Bridge/data/youtube.md @@ -0,0 +1,3 @@ +Check out this video: + +https://www.youtube.com/watch?v=dQw4w9WgXcQ diff --git a/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.oembed.2879fe17dbfe688cfce2eef49bdcbde7.json b/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.oembed.2879fe17dbfe688cfce2eef49bdcbde7.json new file mode 100644 index 0000000000..1fe850340b --- /dev/null +++ b/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.oembed.2879fe17dbfe688cfce2eef49bdcbde7.json @@ -0,0 +1,48 @@ +{ + "headers": { + "content-type": [ + "application\/json" + ], + "vary": [ + "Origin", + "X-Origin", + "Referer" + ], + "content-encoding": [ + "gzip" + ], + "date": [ + "Sat, 05 Feb 2022 22:51:33 GMT" + ], + "server": [ + "scaffolding on HTTPServer2" + ], + "cache-control": [ + "private" + ], + "content-length": [ + "405" + ], + "x-xss-protection": [ + "0" + ], + "x-frame-options": [ + "SAMEORIGIN" + ], + "x-content-type-options": [ + "nosniff" + ], + "alt-svc": [ + "h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\"" + ], + "Content-Location": [ + "https:\/\/www.youtube.com\/oembed?format=json&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DdQw4w9WgXcQ" + ], + "X-Request-Time": [ + "0.076 ms" + ] + }, + "statusCode": 200, + "reasonPhrase": "OK", + "body": "{\"title\":\"Rick Astley - Never Gonna Give You Up (Official Music Video)\",\"author_name\":\"Rick Astley\",\"author_url\":\"https:\/\/www.youtube.com\/c\/RickastleyCoUkOfficial\",\"type\":\"video\",\"height\":113,\"width\":200,\"version\":\"1.0\",\"provider_name\":\"YouTube\",\"provider_url\":\"https:\/\/www.youtube.com\/\",\"thumbnail_height\":360,\"thumbnail_width\":480,\"thumbnail_url\":\"https:\/\/i.ytimg.com\/vi\/dQw4w9WgXcQ\/hqdefault.jpg\",\"html\":\"\\u003ciframe width=\\u0022200\\u0022 height=\\u0022113\\u0022 src=\\u0022https:\/\/www.youtube.com\/embed\/dQw4w9WgXcQ?feature=oembed\\u0022 frameborder=\\u00220\\u0022 allow=\\u0022accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\\u0022 allowfullscreen\\u003e\\u003c\/iframe\\u003e\"}" +} \ No newline at end of file diff --git a/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.watch.04c89f4aa4477375b9a0ca246fd32cca.json b/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.watch.04c89f4aa4477375b9a0ca246fd32cca.json new file mode 100644 index 0000000000..fb170b5704 --- /dev/null +++ b/tests/functional/Extension/Embed/Bridge/requests/www.youtube.com.watch.04c89f4aa4477375b9a0ca246fd32cca.json @@ -0,0 +1,58 @@ +{ + "headers": { + "content-type": [ + "text\/html; charset=utf-8" + ], + "x-content-type-options": [ + "nosniff" + ], + "cache-control": [ + "no-cache, no-store, max-age=0, must-revalidate" + ], + "pragma": [ + "no-cache" + ], + "expires": [ + "Mon, 01 Jan 1990 00:00:00 GMT" + ], + "date": [ + "Sat, 05 Feb 2022 22:51:32 GMT" + ], + "x-frame-options": [ + "SAMEORIGIN" + ], + "strict-transport-security": [ + "max-age=31536000" + ], + "report-to": [ + "{\"group\":\"ATmXEA_XZXH6CdbrmjUzyTbVgxu22C8KYH7NsxKbRt94\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https:\/\/csp.withgoogle.com\/csp\/report-to\/encsid_ATmXEA_XZXH6CdbrmjUzyTbVgxu22C8KYH7NsxKbRt94\"}]}" + ], + "cross-origin-opener-policy-report-only": [ + "same-origin; report-to=\"ATmXEA_XZXH6CdbrmjUzyTbVgxu22C8KYH7NsxKbRt94\"" + ], + "permissions-policy": [ + "ch-ua-arch=*, ch-ua-bitness=*, ch-ua-full-version=*, ch-ua-full-version-list=*, ch-ua-model=*, ch-ua-platform=*, ch-ua-platform-version=*" + ], + "content-encoding": [ + "br" + ], + "server": [ + "ESF" + ], + "x-xss-protection": [ + "0" + ], + "alt-svc": [ + "h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\"" + ], + "Content-Location": [ + "https:\/\/www.youtube.com\/watch?v=dQw4w9WgXcQ" + ], + "X-Request-Time": [ + "1.143 ms" + ] + }, + "statusCode": 200, + "reasonPhrase": "OK", + "body": "var ytcfg={d:function(){return window.yt&&yt.config_||ytcfg.data_||(ytcfg.data_={})},get:function(k,o){return k in ytcfg.d()?ytcfg.d()[k]:o},set:function(){var a=arguments;if(a.length>1)ytcfg.d()[a[0]]=a[1];else for(var k in a[0])ytcfg.d()[k]=a[0][k]}};\nwindow.ytcfg.set('EMERGENCY_BASE_URL', 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