fix #84

import callumlocke/css-url-rewriter#7
utils.js

Author: timaschew

lib/plugins/url-rewriter.js

@@ -1,6 +1,4 @@
 var resolve = require('url').resolve;
-var rewriteCSSURLs = require('css-url-rewriter');
-
 var utils = require('../utils');
 
 module.exports = function (prefix, options) {
@@ -23,7 +21,7 @@ module.exports = function (prefix, options) {
       var branch = file.branch;
 
       // rewrite URLs
-      file.string = rewriteCSSURLs(string, function (uri) {
+      file.string = utils.rewriteCSSURLs(string, function (uri) {
         if (isData(uri)) return uri;
         if (isAbsolute(uri)) return uri;
         if (isFragment(uri)) return uri;

lib/utils.js

@@ -76,3 +76,57 @@ exports.isGeneratorFunction = function (obj) {
     && obj.constructor
     && 'GeneratorFunction' === obj.constructor.name;
 }
+
+
+/*
+ * css-url-rewriter
+ * https://github.com/callumlocke/css-url-rewriter
+ *
+ * Copyright (c) 2014 Callum Locke
+ * Licensed under the MIT license.
+ */
+
+// Regex to find CSS properties that contain URLs
+// Fiddle: http://refiddle.com/refiddles/css-url-matcher
+// Railroad: http://goo.gl/LXpk52
+var cssPropertyMatcher = /@import[^;]*|[;\s]?\*?[a-zA-Z\-]+\s*\:\#?[^;}]*url\(\s*['"]?[^'"\)\s]+['"]?\s*\)[^;}]*/g;
+
+// Regex to find the URLs within a CSS property value
+// Fiddle: http://refiddle.com/refiddles/match-multiple-urls-within-a-css-property-value
+// Railroad: http://goo.gl/vQzMcg
+var urlMatcher = /url\(\s*['"]?([^)'"]+)['"]?\s*\)/g;
+
+var defaults = {
+  excludeProperties: ['behavior', '*behavior']
+};
+
+exports.rewriteCSSURLs = function rewriteCSSURLs(css, settings, rewriterFn) {
+  // Normalise arguments and settings
+  if (typeof settings === 'function') {
+    rewriterFn = settings;
+    settings = defaults;
+  }
+
+  // Return the modified CSS
+  var result = css.toString().replace(cssPropertyMatcher, function(property) {
+    // This function deals with an individual CSS property.
+
+    // If this property is excluded, return it unchanged
+    if (settings.excludeProperties.length) {
+      var propertyName = property.split(':')[0].replace(/^\s+|\s+$/g, '');
+
+      for (var i = settings.excludeProperties.length - 1; i >= 0; i--) {
+        if (propertyName.indexOf(settings.excludeProperties[i]) === 0) {
+          return property;
+        }
+      }
+    }
+
+    // Return the property with the URL rewritten
+    return property.replace(urlMatcher, function(urlFunc, justURL) {
+      return urlFunc.replace(justURL, rewriterFn(justURL));
+    });
+  });
+
+  return result;
+};

package.json

@@ -17,7 +17,6 @@
     "component-manifest": "^1.0.0",
     "component-require2": "^1.0.1",
     "cp": "~0.1.1",
-    "css-url-rewriter": "^0.1.0",
     "debug": "*",
     "generator-supported": "~0.0.1",
     "graceful-fs": "^2.0.1",