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Retain whitespace before color(). Fix for #26. #27

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Merged
merged 1 commit into from
Mar 15, 2016
Merged

Retain whitespace before color(). Fix for #26. #27

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29 changes: 10 additions & 19 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
* Module dependencies.
*/
var postcss = require("postcss")
var balanced = require("balanced-match")
var parser = require("postcss-value-parser")
var colorFn = require("css-color-function")
var helpers = require("postcss-message-helpers")

Expand All @@ -17,7 +17,7 @@ module.exports = postcss.plugin("postcss-color-function", function() {
}

decl.value = helpers.try(function transformColorValue() {
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This try block and helper seems irrelevant now.

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color may throw an error.

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It would be cool to catch and warn separately.

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But in the next pr I think.

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There is a test for throwing a readable error that passes. I assume it passes because colorFn.convert() is the one that throws the error.

There had been a throw error on a mismatched bracket, but that seems irrelevant with postcss-value-parser.

return transformColor(decl.value, decl.source)
return transformColor(decl.value)
}, decl.source)
})
}
Expand All @@ -29,22 +29,13 @@ module.exports = postcss.plugin("postcss-color-function", function() {
* @param {String} string declaration value
* @return {String} converted declaration value to rgba()
*/
function transformColor(string, source) {
var index = string.search(/(^|[^\w\-])color\(/)
function transformColor(string) {
return parser(string).walk(function(node) {
if (node.type !== "function" || node.value !== "color") {
return
}

if (index === -1) {
return string
}

// NOTE: regexp search beginning of line of non char symbol before `color(`.
// Offset used for second case.
index = index === 0 ? index : index + 1

var fn = string.slice(index)
var balancedMatches = balanced("(", ")", fn)
if (!balancedMatches) {
throw new Error("Missing closing parentheses in '" + string + "'", source)
}

return string.slice(0, index) + colorFn.convert("color(" + balancedMatches.body + ")") + transformColor(balancedMatches.post)
node.value = colorFn.convert(parser.stringify(node))
node.type = "word"
}).toString()
}
4 changes: 2 additions & 2 deletions package.json
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Expand Up @@ -20,10 +20,10 @@
"index.js"
],
"dependencies": {
"balanced-match": "^0.1.0",
"css-color-function": "^1.2.0",
"postcss": "^5.0.4",
"postcss-message-helpers": "^2.0.0"
"postcss-message-helpers": "^2.0.0",
"postcss-value-parser": "^3.3.0"
},
"devDependencies": {
"jscs": "^1.6.2",
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2 changes: 2 additions & 0 deletions test/fixtures/color.css
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Expand Up @@ -7,4 +7,6 @@ body {
border-bottom-color: hover-color(red);

border-right-color: hover-color(color(red tint(50%)));

border-color: color(#999 a(0.8)) color(#999 a(0.8));
}
2 changes: 2 additions & 0 deletions test/fixtures/color.expected.css
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Expand Up @@ -7,4 +7,6 @@ body {
border-bottom-color: hover-color(red);

border-right-color: hover-color(rgb(255, 128, 128));

border-color: rgba(153, 153, 153, 0.8) rgba(153, 153, 153, 0.8);
}