exports.htmlEscape = function(text) { var replacements = {"<": "<", ">": ">", "&": "&", "\"": """}; return text.replace(/[<>&"]/g, function(character) { return replacements[character]; }); }; exports.splitLines = function(string){return string.split(/\r?\n/);}; // Counts the column offset in a string, taking tabs into account. // Used mostly to find indentation. function countColumn(string, end) { tabSize = 4; if (end == null) { end = string.search(/[^\s\u00a0]/); if (end == -1) end = string.length; } for (var i = 0, n = 0; i < end; ++i) { if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); else ++n; } return n; } function StringStream(string) { this.pos = this.start = 0; this.string = string; } StringStream.prototype = { eol: function() {return this.pos >= this.string.length;}, sol: function() {return this.pos == 0;}, peek: function() {return this.string.charAt(this.pos);}, next: function() { if (this.pos < this.string.length) return this.string.charAt(this.pos++); }, eat: function(match) { var ch = this.string.charAt(this.pos); if (typeof match == "string") var ok = ch == match; else var ok = ch && (match.test ? match.test(ch) : match(ch)); if (ok) {++this.pos; return ch;} }, eatWhile: function(match) { var start = this.pos; while (this.eat(match)){} return this.pos > start; }, eatSpace: function() { var start = this.pos; while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; return this.pos > start; }, skipToEnd: function() {this.pos = this.string.length;}, skipTo: function(ch) { var found = this.string.indexOf(ch, this.pos); if (found > -1) {this.pos = found; return true;} }, backUp: function(n) {this.pos -= n;}, column: function() {return countColumn(this.string, this.start);}, indentation: function() {return countColumn(this.string);}, match: function(pattern, consume, caseInsensitive) { if (typeof pattern == "string") { function cased(str) {return caseInsensitive ? str.toLowerCase() : str;} if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) { if (consume !== false) this.pos += pattern.length; return true; } } else { var match = this.string.slice(this.pos).match(pattern); if (match && consume !== false) this.pos += match[0].length; return match; } }, current: function(){return this.string.slice(this.start, this.pos);} }; exports.StringStream = StringStream; exports.startState = function(mode, a1, a2) { return mode.startState ? mode.startState(a1, a2) : true; }; var modes = {}, mimeModes = {}; exports.defineMode = function(name, mode) { modes[name] = mode; }; exports.defineMIME = function(mime, spec) { mimeModes[mime] = spec; }; exports.getMode = function(options, spec) { if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) spec = mimeModes[spec]; if (typeof spec == "string") var mname = spec, config = {}; else if (spec != null) var mname = spec.name, config = spec; var mfactory = modes[mname]; if (!mfactory) throw new Error("Unknown mode: " + spec); return mfactory(options, config || {}); }; exports.runMode = function(string, modespec, callback) { var mode = exports.getMode({indentUnit: 2}, modespec); var isNode = callback.nodeType == 1; if (isNode) { var node = callback, accum = []; callback = function(string, style) { if (string == "\n") accum.push("<br>"); else if (style) accum.push("<span class=\"cm-" + exports.htmlEscape(style) + "\">" + exports.htmlEscape(string) + "</span>"); else accum.push(exports.htmlEscape(string)); } } var lines = exports.splitLines(string), state = exports.startState(mode); for (var i = 0, e = lines.length; i < e; ++i) { if (i) callback("\n"); var stream = new exports.StringStream(lines[i]); while (!stream.eol()) { var style = mode.token(stream, state); callback(stream.current(), style, i, stream.start); stream.start = stream.pos; } } if (isNode) node.innerHTML = accum.join(""); };