Add feature: Command Line Interface

README.md

@@ -77,6 +77,21 @@ inlineCss(html, options)
     .then(function(html) { console.log(html); });
 ```
 
+## CLI
+```console
+$ inline-css -h
+Usage: inline-css [FILE]
+
+Description:
+  Inline css into an html file.
+
+Options:
+  -h, --help     Show this message.
+  -v, --version  Print version information.
+
+With no FILE, or when FILE is -, read standard input.
+```
+
 ## API
 
 ### inlineCss(html, options)

bin/cli.js

@@ -0,0 +1,63 @@
+#!/usr/bin/env node
+
+"use strict";
+
+var fs = require("fs");
+var path = require("path");
+var pkg = require("../package.json");
+var inlineCss = require('../');
+
+var binname = Object.keys(pkg.bin)[0];
+
+var options = {};
+var html = process.argv[2];
+
+switch (html) {
+  case "--version":
+  case "-v":
+    console.log(binname + " v" + pkg.version);
+
+    break;
+
+  case "--help":
+  case "-h":
+    console.log("Usage: " + binname + " [FILE]");
+    console.log("");
+    console.log("Description:");
+    console.log("  " + pkg.description);
+    console.log("");
+    console.log("Options:");
+    console.log("  -h, --help     Show this message.");
+    console.log("  -v, --version  Print version information.");
+    console.log("");
+    console.log("With no FILE, or when FILE is -, read standard input.");
+
+    break;
+
+  case "-":
+  case undefined:
+    options.url = 'file://' + process.cwd() + '/';
+    var stdin = process.openStdin();
+    html = "";
+    stdin.setEncoding("utf-8");
+    stdin.on("data", function (chunk) {
+      html += chunk;
+    });
+    stdin.on("end", function () {
+      inlineCss(html, options)
+        .then(function(html) { 
+          console.log(html); 
+        });
+    });
+
+    break;
+
+  default:
+    options.url = 'file://' + path.dirname(path.resolve(html)) + '/';
+    html = fs.readFileSync(html, "utf8");
+    inlineCss(html, options)
+      .then(function(html) { 
+        console.log(html); 
+      });
+}
+

package.json

@@ -37,6 +37,9 @@
     "index.js",
     "lib/"
   ],
+  "bin": {
+    "inline-css": "bin/cli.js"
+  },
   "repository": "jonkemp/inline-css",
   "keywords": [
     "inline",