diff options
Diffstat (limited to 'railties/guides/assets/javascripts/code_highlighter.js')
| -rw-r--r-- | railties/guides/assets/javascripts/code_highlighter.js | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/railties/guides/assets/javascripts/code_highlighter.js b/railties/guides/assets/javascripts/code_highlighter.js deleted file mode 100644 index ce983dad52..0000000000 --- a/railties/guides/assets/javascripts/code_highlighter.js +++ /dev/null @@ -1,188 +0,0 @@ -/* Unobtrustive Code Highlighter By Dan Webb 11/2005 - Version: 0.4 - - Usage: - Add a script tag for this script and any stylesets you need to use - to the page in question, add correct class names to CODE elements, - define CSS styles for elements. That's it! - - Known to work on: - IE 5.5+ PC - Firefox/Mozilla PC/Mac - Opera 7.23 + PC - Safari 2 - - Known to degrade gracefully on: - IE5.0 PC - - Note: IE5.0 fails due to the use of lookahead in some stylesets. To avoid script errors - in older browsers use expressions that use lookahead in string format when defining stylesets. - - This script is inspired by star-light by entirely cunning Dean Edwards - http://dean.edwards.name/star-light/. -*/ - -// replace callback support for safari. -if ("a".replace(/a/, function() {return "b"}) != "b") (function(){ - var default_replace = String.prototype.replace; - String.prototype.replace = function(search,replace){ - // replace is not function - if(typeof replace != "function"){ - return default_replace.apply(this,arguments) - } - var str = "" + this; - var callback = replace; - // search string is not RegExp - if(!(search instanceof RegExp)){ - var idx = str.indexOf(search); - return ( - idx == -1 ? str : - default_replace.apply(str,[search,callback(search, idx, str)]) - ) - } - var reg = search; - var result = []; - var lastidx = reg.lastIndex; - var re; - while((re = reg.exec(str)) != null){ - var idx = re.index; - var args = re.concat(idx, str); - result.push( - str.slice(lastidx,idx), - callback.apply(null,args).toString() - ); - if(!reg.global){ - lastidx += RegExp.lastMatch.length; - break - }else{ - lastidx = reg.lastIndex; - } - } - result.push(str.slice(lastidx)); - return result.join("") - } -})(); - -var CodeHighlighter = { styleSets : new Array }; - -CodeHighlighter.addStyle = function(name, rules) { - // using push test to disallow older browsers from adding styleSets - if ([].push) this.styleSets.push({ - name : name, - rules : rules, - ignoreCase : arguments[2] || false - }) - - function setEvent() { - // set highlighter to run on load (use LowPro if present) - if (typeof Event != 'undefined' && typeof Event.onReady == 'function') - return Event.onReady(CodeHighlighter.init.bind(CodeHighlighter)); - - var old = window.onload; - - if (typeof window.onload != 'function') { - window.onload = function() { CodeHighlighter.init() }; - } else { - window.onload = function() { - old(); - CodeHighlighter.init(); - } - } - } - - // only set the event when the first style is added - if (this.styleSets.length==1) setEvent(); -} - -CodeHighlighter.init = function() { - if (!document.getElementsByTagName) return; - if ("a".replace(/a/, function() {return "b"}) != "b") return; // throw out Safari versions that don't support replace function - // throw out older browsers - - var codeEls = document.getElementsByTagName("CODE"); - // collect array of all pre elements - codeEls.filter = function(f) { - var a = new Array; - for (var i = 0; i < this.length; i++) if (f(this[i])) a[a.length] = this[i]; - return a; - } - - var rules = new Array; - rules.toString = function() { - // joins regexes into one big parallel regex - var exps = new Array; - for (var i = 0; i < this.length; i++) exps.push(this[i].exp); - return exps.join("|"); - } - - function addRule(className, rule) { - // add a replace rule - var exp = (typeof rule.exp != "string")?String(rule.exp).substr(1, String(rule.exp).length-2):rule.exp; - // converts regex rules to strings and chops of the slashes - rules.push({ - className : className, - exp : "(" + exp + ")", - length : (exp.match(/(^|[^\\])\([^?]/g) || "").length + 1, // number of subexps in rule - replacement : rule.replacement || null - }); - } - - function parse(text, ignoreCase) { - // main text parsing and replacement - return text.replace(new RegExp(rules, (ignoreCase)?"gi":"g"), function() { - var i = 0, j = 1, rule; - while (rule = rules[i++]) { - if (arguments[j]) { - // if no custom replacement defined do the simple replacement - if (!rule.replacement) return "<span class=\"" + rule.className + "\">" + arguments[0] + "</span>"; - else { - // replace $0 with the className then do normal replaces - var str = rule.replacement.replace("$0", rule.className); - for (var k = 1; k <= rule.length - 1; k++) str = str.replace("$" + k, arguments[j + k]); - return str; - } - } else j+= rule.length; - } - }); - } - - function highlightCode(styleSet) { - // clear rules array - var parsed, clsRx = new RegExp("(\\s|^)" + styleSet.name + "(\\s|$)"); - rules.length = 0; - - // get stylable elements by filtering out all code elements without the correct className - var stylableEls = codeEls.filter(function(item) { return clsRx.test(item.className) }); - - // add style rules to parser - for (var className in styleSet.rules) addRule(className, styleSet.rules[className]); - - - // replace for all elements - for (var i = 0; i < stylableEls.length; i++) { - // EVIL hack to fix IE whitespace badness if it's inside a <pre> - if (/MSIE/.test(navigator.appVersion) && stylableEls[i].parentNode.nodeName == 'PRE') { - stylableEls[i] = stylableEls[i].parentNode; - - parsed = stylableEls[i].innerHTML.replace(/(<code[^>]*>)([^<]*)<\/code>/i, function() { - return arguments[1] + parse(arguments[2], styleSet.ignoreCase) + "</code>" - }); - parsed = parsed.replace(/\n( *)/g, function() { - var spaces = ""; - for (var i = 0; i < arguments[1].length; i++) spaces+= " "; - return "\n" + spaces; - }); - parsed = parsed.replace(/\t/g, " "); - parsed = parsed.replace(/\n(<\/\w+>)?/g, "<br />$1").replace(/<br \/>[\n\r\s]*<br \/>/g, "<p><br></p>"); - - } else parsed = parse(stylableEls[i].innerHTML, styleSet.ignoreCase); - - stylableEls[i].innerHTML = parsed; - } - } - - // run highlighter on all stylesets - for (var i=0; i < this.styleSets.length; i++) { - highlightCode(this.styleSets[i]); - } -} |