1 files changed, 101 insertions, 0 deletions
diff --git a/node_modules/clean-css/lib/reader/rebase.js b/node_modules/clean-css/lib/reader/rebase.js
new file mode 100644
index 000000000..4e0ff9751
--- /dev/null
+++ b/node_modules/clean-css/lib/reader/rebase.js
@@ -0,0 +1,101 @@
+var extractImportUrlAndMedia = require('./extract-import-url-and-media');
+var restoreImport = require('./restore-import');
+var rewriteUrl = require('./rewrite-url');
+
+var Token = require('../tokenizer/token');
+var isImport = require('../utils/is-import');
+
+var SOURCE_MAP_COMMENT_PATTERN = /^\/\*# sourceMappingURL=(\S+) \*\/$/;
+
+function rebase(tokens, rebaseAll, validator, rebaseConfig) {
+  return rebaseAll ?
+    rebaseEverything(tokens, validator, rebaseConfig) :
+    rebaseAtRules(tokens, validator, rebaseConfig);
+}
+
+function rebaseEverything(tokens, validator, rebaseConfig) {
+  var token;
+  var i, l;
+
+  for (i = 0, l = tokens.length; i < l; i++) {
+    token = tokens[i];
+
+    switch (token[0]) {
+      case Token.AT_RULE:
+        rebaseAtRule(token, validator, rebaseConfig);
+        break;
+      case Token.AT_RULE_BLOCK:
+        rebaseProperties(token[2], validator, rebaseConfig);
+        break;
+      case Token.COMMENT:
+        rebaseSourceMapComment(token, rebaseConfig);
+        break;
+      case Token.NESTED_BLOCK:
+        rebaseEverything(token[2], validator, rebaseConfig);
+        break;
+      case Token.RULE:
+        rebaseProperties(token[2], validator, rebaseConfig);
+        break;
+    }
+  }
+
+  return tokens;
+}
+
+function rebaseAtRules(tokens, validator, rebaseConfig) {
+  var token;
+  var i, l;
+
+  for (i = 0, l = tokens.length; i < l; i++) {
+    token = tokens[i];
+
+    switch (token[0]) {
+      case Token.AT_RULE:
+        rebaseAtRule(token, validator, rebaseConfig);
+        break;
+    }
+  }
+
+  return tokens;
+}
+
+function rebaseAtRule(token, validator, rebaseConfig) {
+  if (!isImport(token[1])) {
+    return;
+  }
+
+  var uriAndMediaQuery = extractImportUrlAndMedia(token[1]);
+  var newUrl = rewriteUrl(uriAndMediaQuery[0], rebaseConfig);
+  var mediaQuery = uriAndMediaQuery[1];
+
+  token[1] = restoreImport(newUrl, mediaQuery);
+}
+
+function rebaseSourceMapComment(token, rebaseConfig) {
+  var matches = SOURCE_MAP_COMMENT_PATTERN.exec(token[1]);
+
+  if (matches && matches[1].indexOf('data:') === -1) {
+    token[1] = token[1].replace(matches[1], rewriteUrl(matches[1], rebaseConfig, true));
+  }
+}
+
+function rebaseProperties(properties, validator, rebaseConfig) {
+  var property;
+  var value;
+  var i, l;
+  var j, m;
+
+  for (i = 0, l = properties.length; i < l; i++) {
+    property = properties[i];
+
+    for (j = 2 /* 0 is Token.PROPERTY, 1 is name */, m = property.length; j < m; j++) {
+      value = property[j][1];
+
+      if (validator.isValidUrl(value)) {
+        property[j][1] = rewriteUrl(value, rebaseConfig);
+      }
+    }
+  }
+}
+
+module.exports = rebase;