node_modules

node_modules/stylus/lib/functions/match.js

@@ -0,0 +1,43 @@
+var utils = require('../utils')
+  , nodes = require('../nodes');
+
+var VALID_FLAGS = 'igm';
+
+/**
+ * retrieves the matches when matching a `val`(string)
+ * against a `pattern`(regular expression).
+ *
+ * Examples:
+ *   $regex = '^(height|width)?([<>=]{1,})(.*)'
+ *
+ *   match($regex,'height>=sm')
+ * 	 // => ('height>=sm' 'height' '>=' 'sm')
+ * 	 // => also truthy
+ *
+ *   match($regex, 'lorem ipsum')
+ *   // => null
+ *
+ * @param {String} pattern
+ * @param {String|Ident} val
+ * @param {String|Ident} [flags='']
+ * @return {String|Null}
+ * @api public
+ */
+
+module.exports = function match(pattern, val, flags){
+  utils.assertType(pattern, 'string', 'pattern');
+  utils.assertString(val, 'val');
+  var re = new RegExp(pattern.val, validateFlags(flags) ? flags.string : '');
+  return val.string.match(re);
+};
+
+function validateFlags(flags) {
+  flags = flags && flags.string;
+
+  if (flags) {
+    return flags.split('').every(function(flag) {
+      return ~VALID_FLAGS.indexOf(flag);
+    });
+  }
+  return false;
+}