aboutsummaryrefslogtreecommitdiffstats
path: root/release/build/js/ParseMaster.js
diff options
context:
space:
mode:
Diffstat (limited to 'release/build/js/ParseMaster.js')
-rw-r--r--release/build/js/ParseMaster.js106
1 files changed, 106 insertions, 0 deletions
diff --git a/release/build/js/ParseMaster.js b/release/build/js/ParseMaster.js
new file mode 100644
index 000000000..915a8b5db
--- /dev/null
+++ b/release/build/js/ParseMaster.js
@@ -0,0 +1,106 @@
+/*
+ ParseMaster, version 1.0.2 (2005-08-19)
+ Copyright 2005, Dean Edwards
+ License: http://creativecommons.org/licenses/LGPL/2.1/
+*/
+
+/* a multi-pattern parser */
+
+// KNOWN BUG: erroneous behavior when using escapeChar with a replacement value that is a function
+
+function ParseMaster() {
+ // constants
+ var $EXPRESSION = 0, $REPLACEMENT = 1, $LENGTH = 2;
+ // used to determine nesting levels
+ var $GROUPS = /\(/g, $SUB_REPLACE = /\$\d/, $INDEXED = /^\$\d+$/,
+ $TRIM = /(['"])\1\+(.*)\+\1\1$/, $$ESCAPE = /\\./g, $QUOTE = /'/,
+ $$DELETED = /\x01[^\x01]*\x01/g;
+ var self = this;
+ // public
+ this.add = function($expression, $replacement) {
+ if (!$replacement) $replacement = "";
+ // count the number of sub-expressions
+ // - add one because each pattern is itself a sub-expression
+ var $length = (_internalEscape(String($expression)).match($GROUPS) || "").length + 1;
+ // does the pattern deal with sub-expressions?
+ if ($SUB_REPLACE.test($replacement)) {
+ // a simple lookup? (e.g. "$2")
+ if ($INDEXED.test($replacement)) {
+ // store the index (used for fast retrieval of matched strings)
+ $replacement = parseInt($replacement.slice(1)) - 1;
+ } else { // a complicated lookup (e.g. "Hello $2 $1")
+ // build a function to do the lookup
+ var i = $length;
+ var $quote = $QUOTE.test(_internalEscape($replacement)) ? '"' : "'";
+ while (i) $replacement = $replacement.split("$" + i--).join($quote + "+a[o+" + i + "]+" + $quote);
+ $replacement = new Function("a,o", "return" + $quote + $replacement.replace($TRIM, "$1") + $quote);
+ }
+ }
+ // pass the modified arguments
+ _add($expression || "/^$/", $replacement, $length);
+ };
+ // execute the global replacement
+ this.exec = function($string) {
+ _escaped.length = 0;
+ return _unescape(_escape($string, this.escapeChar).replace(
+ new RegExp(_patterns, this.ignoreCase ? "gi" : "g"), _replacement), this.escapeChar).replace($$DELETED, "");
+ };
+ // clear the patterns collection so that this object may be re-used
+ this.reset = function() {
+ _patterns.length = 0;
+ };
+
+ // private
+ var _escaped = []; // escaped characters
+ var _patterns = []; // patterns stored by index
+ var _toString = function(){return "(" + String(this[$EXPRESSION]).slice(1, -1) + ")"};
+ _patterns.toString = function(){return this.join("|")};
+ // create and add a new pattern to the patterns collection
+ function _add() {
+ arguments.toString = _toString;
+ // store the pattern - as an arguments object (i think this is quicker..?)
+ _patterns[_patterns.length] = arguments;
+ }
+ // this is the global replace function (it's quite complicated)
+ function _replacement() {
+ if (!arguments[0]) return "";
+ var i = 1, j = 0, $pattern;
+ // loop through the patterns
+ while ($pattern = _patterns[j++]) {
+ // do we have a result?
+ if (arguments[i]) {
+ var $replacement = $pattern[$REPLACEMENT];
+ switch (typeof $replacement) {
+ case "function": return $replacement(arguments, i);
+ case "number": return arguments[$replacement + i];
+ }
+ var $delete = (arguments[i].indexOf(self.escapeChar) == -1) ? "" :
+ "\x01" + arguments[i] + "\x01";
+ return $delete + $replacement;
+ // skip over references to sub-expressions
+ } else i += $pattern[$LENGTH];
+ }
+ };
+ // encode escaped characters
+ function _escape($string, $escapeChar) {
+ return $escapeChar ? $string.replace(new RegExp("\\" + $escapeChar + "(.)", "g"), function($match, $char) {
+ _escaped[_escaped.length] = $char;
+ return $escapeChar;
+ }) : $string;
+ };
+ // decode escaped characters
+ function _unescape($string, $escapeChar) {
+ var i = 0;
+ return $escapeChar ? $string.replace(new RegExp("\\" + $escapeChar, "g"), function() {
+ return $escapeChar + (_escaped[i++] || "");
+ }) : $string;
+ };
+ function _internalEscape($string) {
+ return $string.replace($$ESCAPE, "");
+ };
+};
+ParseMaster.prototype = {
+ constructor: ParseMaster,
+ ignoreCase: false,
+ escapeChar: ""
+};