/**
* SyntaxHighlighter
* http://alexgorbatchev.com/
*
* SyntaxHighlighter is donationware. If you are using it, please donate.
* http://alexgorbatchev.com/wiki/SyntaxHighlighter:Donate
*
* @version
* 2.1.382 (June 24 2010)
*
* @copyright
* Copyright (C) 2004-2009 Alex Gorbatchev.
*
* @license
* This file is part of SyntaxHighlighter.
*
* SyntaxHighlighter is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* SyntaxHighlighter is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with SyntaxHighlighter. If not, see <http://www.gnu.org/copyleft/lesser.html>.
*/
//
// Begin anonymous function. This is used to contain local scope variables without polutting global scope.
//
if (!window.SyntaxHighlighter) var SyntaxHighlighter = function() {
// Shortcut object which will be assigned to the SyntaxHighlighter variable.
// This is a shorthand for local reference in order to avoid long namespace
// references to SyntaxHighlighter.whatever...
var sh = {
defaults : {
/** Additional CSS class names to be added to highlighter elements. */
'class-name' : '',
/** First line number. */
'first-line' : 1,
/**
* Pads line numbers. Possible values are:
*
* false - don't pad line numbers.
* true - automaticaly pad numbers with minimum required number of leading zeroes.
* [int] - length up to which pad line numbers.
*/
'pad-line-numbers' : true,
/** Lines to highlight. */
'highlight' : null,
/** Enables or disables smart tabs. */
'smart-tabs' : true,
/** Gets or sets tab size. */
'tab-size' : 4,
/** Enables or disables gutter. */
'gutter' : true,
/** Enables or disables toolbar. */
'toolbar' : true,
/** Forces code view to be collapsed. */
'collapse' : false,
/** Enables or disables automatic links. */
'auto-links' : true,
/** Gets or sets light mode. Equavalent to turning off gutter and toolbar. */
'light' : false,
/** Enables or disables automatic line wrapping. */
'wrap-lines' : true,
'html-script' : false
},
config : {
/** Enables use of <SCRIPT type="syntaxhighlighter" /> tags. */
useScriptTags : true,
/** Path to the copy to clipboard SWF file. */
clipboardSwf : null,
/** Width of an item in the toolbar. */
toolbarItemWidth : 16,
/** Height of an item in the toolbar. */
toolbarItemHeight : 16,
/** Blogger mode flag. */
bloggerMode : false,
stripBrs : false,
/** Name of the tag that SyntaxHighlighter will automatically look for. */
tagName : 'pre',
strings : {
expandSource : 'Show source',
viewSource : 'View source',
copyToClipboard : 'Copy to clipboard',
copyToClipboardConfirmation : 'The code is in your clipboard now',
print : 'Print',
help : '?',
alert: 'SyntaxHighlighter\n\n',
noBrush : 'Can\'t find brush for: ',
brushNotHtmlScript : 'Brush wasn\'t configured for html-script option: ',
// this is populated by the build script
aboutDialog : '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>About SyntaxHighlighter</title></head><body style="font-family:Geneva,Arial,Helvetica,sans-serif;background-color:#fff;color:#000;font-size:1em;text-align:center;"><div style="text-align:center;margin-top:3em;"><div style="font-size:xx-large;">SyntaxHighlighter</div><div style="font-size:.75em;margin-bottom:4em;"><div>version 2.1.382 (June 24 2010)</div><div><a href="http://alexgorbatchev.com" target="_blank" style="color:#0099FF;text-decoration:none;">http://alexgorbatchev.com</a></div><div>If you like this script, please <a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=2930402" style="color:#0099FF;text-decoration:none;">donate</a> to keep development active!</div></div><div>JavaScript code syntax highlighter.</div><div>Copyright 2004-2009 Alex Gorbatchev.</div></div></body></html>'
},
/** If true, output will show HTML produces instead. */
debug : false
},
/** Internal 'global' variables. */
vars : {
discoveredBrushes : null,
spaceWidth : null,
printFrame : null,
highlighters : {}
},
/** This object is populated by user included external brush files. */
brushes : {},
/** Common regular expressions. */
regexLib : {
multiLineCComments : /\/\*[\s\S]*?\*\//gm,
singleLineCComments : /\/\/.*$/gm,
singleLinePerlComments : /#.*$/gm,
doubleQuotedString : /"([^\\"\n]|\\.)*"/g,
singleQuotedString : /'([^\\'\n]|\\.)*'/g,
multiLineDoubleQuotedString : /"([^\\"]|\\.)*"/g,
multiLineSingleQuotedString : /'([^\\']|\\.)*'/g,
xmlComments : /(<|<)!--[\s\S]*?--(>|>)/gm,
url : /<\w+:\/\/[\w-.\/?%&=@:;]*>|\w+:\/\/[\w-.\/?%&=@:;]*/g,
/** <?= ?> tags. */
phpScriptTags : { left: /(<|<)\?=?/g, right: /\?(>|>)/g },
/** <%= %> tags. */
aspScriptTags : { left: /(<|<)%=?/g, right: /%(>|>)/g },
/** <script></script> tags. */
scriptScriptTags : { left: /(<|<)\s*script.*?(>|>)/gi, right: /(<|<)\/\s*script\s*(>|>)/gi }
},
toolbar : {
/**
* Creates new toolbar for a highlighter.
* @param {Highlighter} highlighter Target highlighter.
*/
create : function(highlighter)
{
var div = document.createElement('DIV'),
items = sh.toolbar.items
;
div.className = 'toolbar';
for (var name in items)
{
var constructor = items[name],
command = new constructor(highlighter),
element = command.create()
;
highlighter.toolbarCommands[name] = command;
if (element == null)
continue;
if (typeof(element) == 'string')
element = sh.toolbar.createButton(element, highlighter.id, name);
element.className += 'item ' + name;
div.appendChild(element);
}
return div;
},
/**
* Create a standard anchor button for the toolbar.
* @param {String} label Label text to display.
* @param {String} highlighterId Highlighter ID that this button would belong to.
* @param {String} commandName Command name that would be executed.
* @return {Element} Returns an 'A' element.
*/
createButton : function(label, highlighterId, commandName)
{
var a = document.createElement('a'),
style = a.style,
config = sh.config,
width = config.toolbarItemWidth,
height = config.toolbarItemHeight
;
a.href = '#' + commandName;
a.title = label;
a.highlighterId = highlighterId;
a.commandName = commandName;
a.innerHTML = label;
if (isNaN(width) == false)
style.width = width + 'px';
if (isNaN(height) == false)
style.height = height + 'px';
a.onclick = function(e)
{
try
{
sh.toolbar.executeCommand(
this,
e || window.event,
this.highlighterId,
this.commandName
);
}
catch(e)
{
sh.utils.alert(e.message);
}
return false;
};
return a;
},
/**
* Executes a toolbar command.
* @param {Element} sender Sender element.
* @param {MouseEvent} event Original mouse event object.
* @param {String} highlighterId Highlighter DIV element ID.
* @param {String} commandName Name of the command to execute.
* @return {Object} Passes out return value from command execution.
*/
executeCommand : function(sender, event, highlighterId, commandName, args)
{
var highlighter = sh.vars.highlighters[highlighterId],
command
;
if (highlighter == null || (command = highlighter.toolbarCommands[commandName]) == null)
return null;
return command.execute(sender, event, args);
},
/** Collection of toolbar items. */
items : {
expandSource : function(highlighter)
{
this.create = function()
{
if (highlighter.getParam('collapse') != true)
return;
return sh.config.strings.expandSource;
};
this.execute = function(sender, event, args)
{
var div = highlighter.div;
sender.parentNode.removeChild(sender);
div.className = div.className.replace('collapsed', '');
};
},
/**
* Command to open a new window and display the original unformatted source code inside.
*/
viewSource : function(highlighter)
{
this.create = function()
{
return sh.config.strings.viewSource;
};
this.execute = function(sender, event, args)
{
var code = sh.utils.fixInputString(highlighter.originalCode).replace(/</g, '<'),
wnd = sh.utils.popup('', '_blank', 750, 400, 'location=0, resizable=1, menubar=0, scrollbars=1')
;
code = sh.utils.unindent(code);
wnd.document.write('<pre>' + code + '</pre>');
wnd.document.close();
};
},
/**
* Command to copy the original source code in to the clipboard.
* Uses Flash method if <code>clipboardSwf</code> is configured.
*/
copyToClipboard : function(highlighter)
{
var flashDiv, flashSwf,
highlighterId = highlighter.id
;
this.create = function()
{
var config = sh.config;
// disable functionality if running locally
if (config.clipboardSwf == null)
return null;
function params(list)
{
var result = '';
for (var name in list)
result += "<param name='" + name + "' value='" + list[name] + "'/>";
return result;
};
function attributes(list)
{
var result = '';
for (var name in list)
result += " " + name + "='" + list[name] + "'";
return result;
};
var args1 = {
width : config.toolbarItemWidth,
height : config.toolbarItemHeight,
id : highlighterId + '_clipboard',
type : 'application/x-shockwave-flash',
title : sh.config.strings.copyToClipboard
},
// these arguments are used in IE's <param /> collection
args2 = {
allowScriptAccess : 'always',
wmode : 'transparent',
flashVars : 'highlighterId=' + highlighterId,
menu : 'false'
},
swf = config.clipboardSwf,
html
;
if (/msie/i.test(navigator.userAgent))
{
html = '<object'
+ attributes({
classid : 'clsid:d27cdb6e-ae6d-11cf-96b8-444553540000',
codebase : 'http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0'
})
+ attributes(args1)
+ '>'
+ params(args2)
+ params({ movie : swf })
+ '</object>'
;
}
else
{
html = '<embed'
+ attributes(args1)
+ attributes(args2)
+ attributes({ src : swf })
+ '/>'
;
}
flashDiv = document.createElement('div');
flashDiv.innerHTML = html;
return flashDiv;
};
this.execute = function(sender, event, args)
{
var command = args.command;
switch (command)
{
case 'get':
var code = sh.utils.unindent(
sh.utils.fixInputString(highlighter.originalCode)
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/&/g, '&')
);
if(window.clipboardData)
// will fall through to the confirmation because there isn't a break
window.clipboardData.setData('text', code);
else
return sh.utils.unindent(code);
case 'ok':
sh.utils.alert(sh.config.strings.copyToClipboardConfirmation);
break;
case 'error':
sh.utils.alert(args.message);
break;
}
};
},
/** Command to print the colored source code. */
printSource : function(highlighter)
{
this.create = function()
{
return sh.config.strings.print;
};
this.execute = function(sender, event, args)
{
var iframe = document.createElement('IFRAME'),
doc = null
;
// make sure there is never more than one hidden iframe created by SH
if (sh.vars.printFrame != null)
document.body.removeChild(sh.vars.printFrame);
sh.vars.printFrame = iframe;
// this hides the iframe
iframe.style.cssText = 'position:absolute;width:0px;height:0px;left:-500px;top:-500px;';
document.body.appendChild(iframe);
doc = iframe.contentWindow.document;
copyStyles(doc, window.document);
doc.write('<div class="' + highlighter.div.className.replace('collapsed', '') + ' printing">' + highlighter.div.innerHTML + '</div>');
doc.close();
iframe.contentWindow.focus();
iframe.contentWindow.print();
function copyStyles(destDoc, sourceDoc)
{
var links = sourceDoc.getElementsByTagName('link');
for(var i = 0; i < links.length; i++)
if(links[i].rel.toLowerCase() == 'stylesheet' && /shCore\.css$/.test(links[i].href))
destDoc.write('<link type="text/css" rel="stylesheet" href="' + links[i].href + '"></link>');
};
};
},
/** Command to display the about dialog window. */
about : function(highlighter)
{
this.create = function()
{
return sh.config.strings.help;
};
this.execute = function(sender, event)
{
var wnd = sh.utils.popup('', '_blank', 500, 250, 'scrollbars=0'),
doc = wnd.document
;
doc.write(sh.config.strings.aboutDialog);
doc.close();
wnd.focus();
};
}
}
},
utils : {
/**
* Finds an index of element in the array.
* @ignore
* @param {Object} searchElement
* @param {Number} fromIndex
* @return {Number} Returns index of element if found; -1 otherwise.
*/
indexOf : function(array, searchElement, fromIndex)
{
fromIndex = Math.max(fromIndex || 0, 0);
for (var i = fromIndex; i < array.length; i++)
if(array[i] == searchElement)
return i;
return -1;
},
/**
* Generates a unique element ID.
*/
guid : function(prefix)
{
return prefix + Math.round(Math.random() * 1000000).toString();
},
/**
* Merges two objects. Values from obj2 override values in obj1.
* Function is NOT recursive and works only for one dimensional objects.
* @param {Object} obj1 First object.
* @param {Object} obj2 Second object.
* @return {Object} Returns combination of both objects.
*/
merge: function(obj1, obj2)
{
var result = {}, name;
for (name in obj1)
result[name] = obj1[name];
for (name in obj2)
result[name] = obj2[name];
return result;
},
/**
* Attempts to convert string to boolean.
* @param {String} value Input string.
* @return {Boolean} Returns true if input was "true", false if input was "false" and value otherwise.
*/
toBoolean: function(value)
{
switch (value)
{
case "true":
return true;
case "false":
return false;
}
return value;
},
/**
* Opens up a centered popup window.
* @param {String} url URL to open in the window.
* @param {String} name Popup name.
* @param {int} width Popup width.
* @param {int} height Popup height.
* @param {String} options window.open() options.
* @return {Window} Returns window instance.
*/
popup: function(url, name, width, height, options)
{
var x = (screen.width - width) / 2,
y = (screen.height - height) / 2
;
options += ', left=' + x +
', top=' + y +
', width=' + width +
', height=' + height
;
options = options.replace(/^,/, '');
var win = window.open(url, name, options);
win.focus();
return win;
},
/**
* Adds event handler to the target object.
* @param {Object} obj Target object.
* @param {String} type Name of the event.
* @param {Function} func Handling function.
*/
addEvent: function(obj, type, func)
{
if (obj.attachEvent)
{
obj['e' + type + func] = func;
obj[type + func] = function()
{
obj['e' + type + func](window.event);
}
obj.attachEvent('on' + type, obj[type + func]);
}
else
{
obj.addEventListener(type, func, false);
}
},
/**
* Displays an alert.
* @param {String} str String to display.
*/
alert: function(str)
{
alert(sh.config.strings.alert + str)
},
/**
* Finds a brush by its alias.
*
* @param {String} alias Brush alias.
* @param {Boolean} alert Suppresses the alert if false.
* @return {Brush} Returns bursh constructor if found, null otherwise.
*/
findBrush: function(alias, alert)
{
var brushes = sh.vars.discoveredBrushes,
result = null
;
if (brushes == null)
{
brushes = {};
// Find all brushes
for (var brush in sh.brushes)
{
var aliases = sh.brushes[brush].aliases;
if (aliases == null)
continue;
// keep the brush name
sh.brushes[brush].name = brush.toLowerCase();
for (var i = 0; i < aliases.length; i++)
brushes[aliases[i]] = brush;
}
sh.vars.discoveredBrushes = brushes;
}
result = sh.brushes[brushes[alias]];
if (result == null && alert != false)
sh.utils.alert(sh.config.strings.noBrush + alias);
return result;
},
/**
* Executes a callback on each line and replaces each line with result from the callback.
* @param {Object} str Input string.
* @param {Object} callback Callback function taking one string argument and returning a string.
*/
eachLine: function(str, callback)
{
var lines = str.split('\n');
for (var i = 0; i < lines.length; i++)
lines[i] = callback(lines[i]);
return lines.join('\n');
},
/**
* This is a special trim which only removes first and last empty lines
* and doesn't affect valid leading space on the first line.
*
* @param {String} str Input string
* @return {String} Returns string without empty first and last lines.
*/
trimFirstAndLastLines: function(str)
{
return str.replace(/^[ ]*[\n]+|[\n]*[ ]*$/g, '');
},
/**
* Parses key/value pairs into hash object.
*
* Understands the following formats:
* - name: word;
* - name: [word, word];
* - name: "string";
* - name: 'string';
*
* For example:
* name1: value; name2: [value, value]; name3: 'value'
*
* @param {String} str Input string.
* @return {Object} Returns deserialized object.
*/
parseParams: function(str)
{
var match,
result = {},
arrayRegex = new XRegExp("^\\[(?<values>(.*?))\\]$"),
regex = new XRegExp(
"(?<name>[\\w-]+)" +
"\\s*:\\s*" +
"(?<value>" +
"[\\w-%#]+|" + // word
"\\[.*?\\]|" + // [] array
'".*?"|' + // "" string
"'.*?'" + // '' string
")\\s*;?",
"g"
)
;
while ((match = regex.exec(str)) != null)
{
var value = match.value
.replace(/^['"]|['"]$/g, '') // strip quotes from end of strings
;
// try to parse array value
if (value != null && arrayRegex.test(value))
{
var m = arrayRegex.exec(value);
value = m.values.length > 0 ? m.values.split(/\s*,\s*/) : [];
}
result[match.name] = value;
}
return result;
},
/**
* Wraps each line of the string into <code/> tag with given style applied to it.
*
* @param {String} str Input string.
* @param {String} css Style name to apply to the string.
* @return {String} Returns input string with each line surrounded by <span/> tag.
*/
decorate: function(str, css)
{
if (str == null || str.length == 0 || str == '\n')
return str;
str = str.replace(/</g, '<');
// Replace two or more sequential spaces with leaving last space untouched.
str = str.replace(/ {2,}/g, function(m)
{
var spaces = '';
for (var i = 0; i < m.length - 1; i++)
spaces += ' ';
return spaces + ' ';
});
// Split each line and apply <span class="...">...</span> to them so that
// leading spaces aren't included.
if (css != null)
str = sh.utils.eachLine(str, function(line)
{
if (line.length == 0)
return '';
var spaces = '';
line = line.replace(/^( | )+/, function(s)
{
spaces = s;
return '';
});
if (line.length == 0)
return spaces;
return spaces + '<code class="' + css + '">' + line + '</code>';
});
return str;
},
/**
* Pads number with zeros until it's length is the same as given length.
*
* @param {Number} number Number to pad.
* @param {Number} length Max string length with.
* @return {String} Returns a string padded with proper amount of '0'.
*/
padNumber : function(number, length)
{
var result = number.toString();
while (result.length < length)
result = '0' + result;
return result;
},
/**
* Measures width of a single space character.
* @return {Number} Returns width of a single space character.
*/
measureSpace : function()
{
var container = document.createElement('div'),
span,
result = 0,
body = document.body,
id = sh.utils.guid('measureSpace'),
// variable names will be compressed, so it's better than a plain string
divOpen = '<div class="',
closeDiv = '</div>',
closeSpan = '</span>'
;
// we have to duplicate highlighter nested structure in order to get an acurate space measurment
container.innerHTML =
divOpen + 'syntaxhighlighter">'
+ divOpen + 'lines">'
+ divOpen + 'line">'
+ divOpen + 'content'
+ '"><span class="block"><span id="' + id + '"> ' + closeSpan + closeSpan
+ closeDiv
+ closeDiv
+ closeDiv
+ closeDiv
;
body.appendChild(container);
span = document.getElementById(id);
if (/opera/i.test(navigator.userAgent))
{
var style = window.getComputedStyle(span, null);
result = parseInt(style.getPropertyValue("width"));
}
else
{
result = span.offsetWidth;
}
body.removeChild(container);
return result;
},
/**
* Replaces tabs with spaces.
*
* @param {String} code Source code.
* @param {Number} tabSize Size of the tab.
* @return {String} Returns code with all tabs replaces by spaces.
*/
processTabs : function(code, tabSize)
{
var tab = '';
for (var i = 0; i < tabSize; i++)
tab += ' ';
return code.replace(/\t/g, tab);
},
/**
* Replaces tabs with smart spaces.
*
* @param {String} code Code to fix the tabs in.
* @param {Number} tabSize Number of spaces in a column.
* @return {String} Returns code with all tabs replaces with roper amount of spaces.
*/
processSmartTabs : function(code, tabSize)
{
var lines = code.split('\n'),
tab = '\t',
spaces = ''
;
// Create a string with 1000 spaces to copy spaces from...
// It's assumed that there would be no indentation longer than that.
for (var i = 0; i < 50; i++)
spaces += ' '; // 20 spaces * 50
// This function inserts specified amount of spaces in the string
// where a tab is while removing that given tab.
function insertSpaces(line, pos, count)
{
return line.substr(0, pos)
+ spaces.substr(0, count)
+ line.substr(pos + 1, line.length) // pos + 1 will get rid of the tab
;
};
// Go through all the lines and do the 'smart tabs' magic.
code = sh.utils.eachLine(code, function(line)
{
if (line.indexOf(tab) == -1)
return line;
var pos = 0;
while ((pos = line.indexOf(tab)) != -1)
{
// This is pretty much all there is to the 'smart tabs' logic.
// Based on the position within the line and size of a tab,
// calculate the amount of spaces we need to insert.
var spaces = tabSize - pos % tabSize;
line = insertSpaces(line, pos, spaces);
}
return line;
});
return code;
},
/**
* Performs various string fixes based on configuration.
*/
fixInputString : function(str)
{
var br = /<br\s*\/?>|<br\s*\/?>/gi;
if (sh.config.bloggerMode == true)
str = str.replace(br, '\n');
if (sh.config.stripBrs == true)
str = str.replace(br, '');
return str;
},
/**
* Removes all white space at the begining and end of a string.
*
* @param {String} str String to trim.
* @return {String} Returns string without leading and following white space characters.
*/
trim: function(str)
{
return str.replace(/^\s+|\s+$/g, '');
},
/**
* Unindents a block of text by the lowest common indent amount.
* @param {String} str Text to unindent.
* @return {String} Returns unindented text block.
*/
unindent: function(str)
{
var lines = sh.utils.fixInputString(str).split('\n'),
indents = new Array(),
regex = /^\s*/,
min = 1000
;
// go through every line and check for common number of indents
for (var i = 0; i < lines.length && min > 0; i++)
{
var line = lines[i];
if (sh.utils.trim(line).length == 0)
continue;
var matches = regex.exec(line);
// In the event that just one line doesn't have leading white space
// we can't unindent anything, so bail completely.
if (matches == null)
return str;
min = Math.min(matches[0].length, min);
}
// trim minimum common number of white space from the begining of every line
if (min > 0)
for (var i = 0; i < lines.length; i++)
lines[i] = lines[i].substr(min);
return lines.join('\n');
},
/**
* Callback method for Array.sort() which sorts matches by
* index position and then by length.
*
* @param {Match} m1 Left object.
* @param {Match} m2 Right object.
* @return {Number} Returns -1, 0 or -1 as a comparison result.
*/
matchesSortCallback: function(m1, m2)
{
// sort matches by index first
if(m1.index < m2.index)
return -1;
else if(m1.index > m2.index)
return 1;
else
{
// if index is the same, sort by length
if(m1.length < m2.length)
return -1;
else if(m1.length > m2.length)
return 1;
}
return 0;
},
/**
* Executes given regular expression on provided code and returns all
* matches that are found.
*
* @param {String} code Code to execute regular expression on.
* @param {Object} regex Regular expression item info from <code>regexList</code> collection.
* @return {Array} Returns a list of Match objects.
*/
getMatches: function(code, regexInfo)
{
function defaultAdd(match, regexInfo)
{
return [new sh.Match(match[0], match.index, regexInfo.css)];
};
var index = 0,
match = null,
result = [],
func = regexInfo.func ? regexInfo.func : defaultAdd
;
while((match = regexInfo.regex.exec(code)) != null)
result = result.concat(func(match, regexInfo));
return result;
},
processUrls: function(code)
{
var lt = '<',
gt = '>'
;
return code.replace(sh.regexLib.url, function(m)
{
var suffix = '', prefix = '';
// We include < and > in the URL for the common cases like <http://google.com>
// The problem is that they get transformed into <http://google.com>
// Where as > easily looks like part of the URL string.
if (m.indexOf(lt) == 0)
{
prefix = lt;
m = m.substring(lt.length);
}
if (m.indexOf(gt) == m.length - gt.length)
{
m = m.substring(0, m.length - gt.length);
suffix = gt;
}
return prefix + '<a href="' + m + '">' + m + '</a>' + suffix;
});
},
/**
* Finds all <SCRIPT TYPE="syntaxhighlighter" /> elements.
* @return {Array} Returns array of all found SyntaxHighlighter tags.
*/
getSyntaxHighlighterScriptTags: function()
{
var tags = document.getElementsByTagName('script'),
result = []
;
for (var i = 0; i < tags.length; i++)
if (tags[i].type == 'syntaxhighlighter')
result.push(tags[i]);
return result;
},
/**
* Strips <![CDATA[]]> from <SCRIPT /> content because it should be used
* there in most cases for XHTML compliance.
* @param {String} original Input code.
* @return {String} Returns code without leading <![CDATA[]]> tags.
*/
stripCData: function(original)
{
var left = '<![CDATA[',
right = ']]>',
// for some reason IE inserts some leading blanks here
copy = sh.utils.trim(original),
changed = false
;
if (copy.indexOf(left) == 0)
{
copy = copy.substring(left.length);
changed = true;
}
if (copy.indexOf(right) == copy.length - right.length)
{
copy = copy.substring(0, copy.length - right.length);
changed = true;
}
return changed ? copy : original;
}
}, // end of utils
/**
* Shorthand to highlight all elements on the page that are marked as
* SyntaxHighlighter source code.
*
* @param {Object} globalParams Optional parameters which override element's
* parameters. Only used if element is specified.
*
* @param {Object} element Optional element to highlight. If none is
* provided, all elements in the current document
* are highlighted.
*/
highlight : function(globalParams, element)
{
function toArray(source)
{
var result = [];
for (var i = 0; i < source.length; i++)
result.push(source[i]);
return result;
};
var elements = element ? [element] : toArray(document.getElementsByTagName(sh.config.tagName)),
propertyName = 'innerHTML',
highlighter = null,
conf = sh.config
;
// support for <SCRIPT TYPE="syntaxhighlighter" /> feature
if (conf.useScriptTags)
elements = elements.concat(sh.utils.getSyntaxHighlighterScriptTags());
if (elements.length === 0)
return;
for (var i = 0; i < elements.length; i++)
{
var target = elements[i],
params = sh.utils.parseParams(target.className),
brushName,
code,
result
;
// local params take precedence over globals
params = sh.utils.merge(globalParams, params);
brushName = params['brush'];
if (brushName == null)
continue;
// Instantiate a brush
if (params['html-script'] == 'true' || sh.defaults['html-script'] == true)
{
highlighter = new sh.HtmlScript(brushName);
brushName = 'htmlscript';
}
else
{
var brush = sh.utils.findBrush(brushName);
if (brush)
{
brushName = brush.name;
highlighter = new brush();
}
else
{
continue;
}
}
code = target[propertyName];
// remove CDATA from <SCRIPT/> tags if it's present
if (conf.useScriptTags)
code = sh.utils.stripCData(code);
params['brush-name'] = brushName;
highlighter.highlight(code, params);
result = highlighter.div;
if (sh.config.debug)
{
result = document.createElement('textarea');
result.value = highlighter.div.innerHTML;
result.style.width = '70em';
result.style.height = '30em';
}
target.parentNode.replaceChild(result, target);
}
},
/**
* Main entry point for the SyntaxHighlighter.
* @param {Object} params Optional params to apply to all highlighted elements.
*/
all : function(params)
{
sh.utils.addEvent(
window,
'load',
function() { sh.highlight(params); }
);
}
}; // end of sh
/**
* Match object.
*/
sh.Match = function(value, index, css)
{
this.value = value;
this.index = index;
this.length = value.length;
this.css = css;
this.brushName = null;
};
sh.Match.prototype.toString = function()
{
return this.value;
};
/**
* Simulates HTML code with a scripting language embedded.
*
* @param {String} scriptBrushName Brush name of the scripting language.
*/
sh.HtmlScript = function(scriptBrushName)
{
var brushClass = sh.utils.findBrush(scriptBrushName),
scriptBrush,
xmlBrush = new sh.brushes.Xml(),
bracketsRegex = null
;
if (brushClass == null)
return;
scriptBrush = new brushClass();
this.xmlBrush = xmlBrush;
if (scriptBrush.htmlScript == null)
{
sh.utils.alert(sh.config.strings.brushNotHtmlScript + scriptBrushName);
return;
}
xmlBrush.regexList.push(
{ regex: scriptBrush.htmlScript.code, func: process }
);
function offsetMatches(matches, offset)
{
for (var j = 0; j < matches.length; j++)
matches[j].index += offset;
}
function process(match, info)
{
var code = match.code,
matches = [],
regexList = scriptBrush.regexList,
offset = match.index + match.left.length,
htmlScript = scriptBrush.htmlScript,
result
;
// add all matches from the code
for (var i = 0; i < regexList.length; i++)
{
result = sh.utils.getMatches(code, regexList[i]);
offsetMatches(result, offset);
matches = matches.concat(result);
}
// add left script bracket
if (htmlScript.left != null && match.left != null)
{
result = sh.utils.getMatches(match.left, htmlScript.left);
offsetMatches(result, match.index);
matches = matches.concat(result);
}
// add right script bracket
if (htmlScript.right != null && match.right != null)
{
result = sh.utils.getMatches(match.right, htmlScript.right);
offsetMatches(result, match.index + match[0].lastIndexOf(match.right));
matches = matches.concat(result);
}
for (var j = 0; j < matches.length; j++)
matches[j].brushName = brushClass.name;
return matches;
}
};
sh.HtmlScript.prototype.highlight = function(code, params)
{
this.xmlBrush.highlight(code, params);
this.div = this.xmlBrush.div;
}
/**
* Main Highlither class.
* @constructor
*/
sh.Highlighter = function()
{
};
sh.Highlighter.prototype = {
/**
* Returns value of the parameter passed to the highlighter.
* @param {String} name Name of the parameter.
* @param {Object} defaultValue Default value.
* @return {Object} Returns found value or default value otherwise.
*/
getParam : function(name, defaultValue)
{
var result = this.params[name];
return sh.utils.toBoolean(result == null ? defaultValue : result);
},
/**
* Shortcut to document.createElement().
* @param {String} name Name of the element to create (DIV, A, etc).
* @return {HTMLElement} Returns new HTML element.
*/
create: function(name)
{
return document.createElement(name);
},
/**
* Applies all regular expression to the code and stores all found
* matches in the `this.matches` array.
* @param {Array} regexList List of regular expressions.
* @param {String} code Source code.
* @return {Array} Returns list of matches.
*/
findMatches: function(regexList, code)
{
var result = [];
if (regexList != null)
for (var i = 0; i < regexList.length; i++)
// BUG: length returns len+1 for array if methods added to prototype chain (oising@gmail.com)
if (typeof (regexList[i]) == "object")
result = result.concat(sh.utils.getMatches(code, regexList[i]));
// sort the matches
return result.sort(sh.utils.matchesSortCallback);
},
/**
* Checks to see if any of the matches are inside of other matches.
* This process would get rid of highligted strings inside comments,
* keywords inside strings and so on.
*/
removeNestedMatches: function()
{
var matches = this.matches;
// Optimized by Jose Prado (http://joseprado.com)
for (var i = 0; i < matches.length; i++)
{
if (matches[i] === null)
continue;
var itemI = matches[i],
itemIEndPos = itemI.index + itemI.length
;
for (var j = i + 1; j < matches.length && matches[i] !== null; j++)
{
var itemJ = matches[j];
if (itemJ === null)
continue;
else if (itemJ.index > itemIEndPos)
break;
else if (itemJ.index == itemI.index && itemJ.length > itemI.length)
this.matches[i] = null;
else if (itemJ.index >= itemI.index && itemJ.index < itemIEndPos)
this.matches[j] = null;
}
}
},
/**
* Splits block of text into individual DIV lines.
* @param {String} code Code to highlight.
* @return {String} Returns highlighted code in HTML form.
*/
createDisplayLines : function(code)
{
var lines = code.split('\n'),
firstLine = parseInt(this.getParam('first-line')),
padLength = this.getParam('pad-line-numbers'),
highlightedLines = this.getParam('highlight', []),
hasGutter = this.getParam('gutter')
;
code = '';
if (padLength == true)
padLength = (firstLine + lines.length - 1).toString().length;
else if (isNaN(padLength) == true)
padLength = 0;
for (var i = 0; i < lines.length; i++)
{
var line = lines[i],
indent = /^( |\s)+/.exec(line),
lineClass = 'alt' + (i % 2 == 0 ? 1 : 2),
lineNumber = sh.utils.padNumber(firstLine + i, padLength),
highlighted = sh.utils.indexOf(highlightedLines, (firstLine + i).toString()) != -1,
spaces = null
;
if (indent != null)
{
spaces = indent[0].toString();
line = line.substr(spaces.length);
}
line = sh.utils.trim(line);
if (line.length == 0)
line = ' ';
if (highlighted)
lineClass += ' highlighted';
code +=
'<div class="line ' + lineClass + '">'
+ '<table>'
+ '<tr>'
+ (hasGutter ? '<td class="number"><code>' + lineNumber + '</code></td>' : '')
+ '<td class="content">'
+ (spaces != null ? '<code class="spaces">' + spaces.replace(' ', ' ') + '</code>' : '')
+ line
+ '</td>'
+ '</tr>'
+ '</table>'
+ '</div>'
;
}
return code;
},
/**
* Finds all matches in the source code.
* @param {String} code Source code to process matches in.
* @param {Array} matches Discovered regex matches.
* @return {String} Returns formatted HTML with processed mathes.
*/
processMatches: function(code, matches)
{
var pos = 0,
result = '',
decorate = sh.utils.decorate, // make an alias to save some bytes
brushName = this.getParam('brush-name', '')
;
function getBrushNameCss(match)
{
var result = match ? (match.brushName || brushName) : brushName;
return result ? result + ' ' : '';
};
// Finally, go through the final list of matches and pull the all
// together adding everything in between that isn't a match.
for (var i = 0; i < matches.length; i++)
{
var match = matches[i],
matchBrushName
;
if (match === null || match.length === 0)
continue;
matchBrushName = getBrushNameCss(match);
result += decorate(code.substr(pos, match.index - pos), matchBrushName + 'plain')
+ decorate(match.value, matchBrushName + match.css)
;
pos = match.index + match.length;
}
// don't forget to add whatever's remaining in the string
result += decorate(code.substr(pos), getBrushNameCss() + 'plain');
return result;
},
/**
* Highlights the code and returns complete HTML.
* @param {String} code Code to highlight.
* @param {Object} params Parameters object.
*/
highlight: function(code, params)
{
// using variables for shortcuts because JS compressor will shorten local variable names
var conf = sh.config,
vars = sh.vars,
div,
divClassName,
tabSize,
important = 'important'
;
this.params = {};
this.div = null;
this.lines = null;
this.code = null;
this.bar = null;
this.toolbarCommands = {};
this.id = sh.utils.guid('highlighter_');
// register this instance in the highlighters list
vars.highlighters[this.id] = this;
if (code === null)
code = '';
// local params take precedence over defaults
this.params = sh.utils.merge(sh.defaults, params || {});
// process light mode
if (this.getParam('light') == true)
this.params.toolbar = this.params.gutter = false;
this.div = div = this.create('DIV');
this.lines = this.create('DIV');
this.lines.className = 'lines';
className = 'syntaxhighlighter';
div.id = this.id;
// make collapsed
if (this.getParam('collapse'))
className += ' collapsed';
// disable gutter
if (this.getParam('gutter') == false)
className += ' nogutter';
// disable line wrapping
if (this.getParam('wrap-lines') == false)
this.lines.className += ' no-wrap';
// add custom user style name
className += ' ' + this.getParam('class-name');
// add brush alias to the class name for custom CSS
className += ' ' + this.getParam('brush-name');
div.className = className;
this.originalCode = code;
this.code = sh.utils.trimFirstAndLastLines(code)
.replace(/\r/g, ' ') // IE lets these buggers through
;
tabSize = this.getParam('tab-size');
// replace tabs with spaces
this.code = this.getParam('smart-tabs') == true
? sh.utils.processSmartTabs(this.code, tabSize)
: sh.utils.processTabs(this.code, tabSize)
;
this.code = sh.utils.unindent(this.code);
// add controls toolbar
if (this.getParam('toolbar'))
{
this.bar = this.create('DIV');
this.bar.className = 'bar';
this.bar.appendChild(sh.toolbar.create(this));
div.appendChild(this.bar);
// set up toolbar rollover
var bar = this.bar;
function hide() { bar.className = bar.className.replace('show', ''); }
div.onmouseover = function() { hide(); bar.className += ' show'; };
div.onmouseout = function() { hide(); }
}
div.appendChild(this.lines);
this.matches = this.findMatches(this.regexList, this.code);
this.removeNestedMatches();
code = this.processMatches(this.code, this.matches);
// finally, split all lines so that they wrap well
code = this.createDisplayLines(sh.utils.trim(code));
// finally, process the links
if (this.getParam('auto-links'))
code = sh.utils.processUrls(code);
this.lines.innerHTML = code;
},
/**
* Converts space separated list of keywords into a regular expression string.
* @param {String} str Space separated keywords.
* @return {String} Returns regular expression string.
*/
getKeywords: function(str)
{
str = str
.replace(/^\s+|\s+$/g, '')
.replace(/\s+/g, '|')
;
return '\\b(?:' + str + ')\\b';
},
/**
* Makes a brush compatible with the `html-script` functionality.
* @param {Object} regexGroup Object containing `left` and `right` regular expressions.
*/
forHtmlScript: function(regexGroup)
{
this.htmlScript = {
left : { regex: regexGroup.left, css: 'script' },
right : { regex: regexGroup.right, css: 'script' },
code : new XRegExp(
"(?<left>" + regexGroup.left.source + ")" +
"(?<code>.*?)" +
"(?<right>" + regexGroup.right.source + ")",
"sgi"
)
};
}
}; // end of Highlighter
return sh;
}(); // end of anonymous function
/**
* XRegExp 0.6.1
* (c) 2007-2008 Steven Levithan
* <http://stevenlevithan.com/regex/xregexp/>
* MIT License
*
* provides an augmented, cross-browser implementation of regular expressions
* including support for additional modifiers and syntax. several convenience
* methods and a recursive-construct parser are also included.
*/
// prevent running twice, which would break references to native globals
if (!window.XRegExp) {
// anonymous function to avoid global variables
(function () {
// copy various native globals for reference. can't use the name ``native``
// because it's a reserved JavaScript keyword.
var real = {
exec: RegExp.prototype.exec,
match: String.prototype.match,
replace: String.prototype.replace,
split: String.prototype.split
},
/* regex syntax parsing with support for all the necessary cross-
browser and context issues (escapings, character classes, etc.) */
lib = {
part: /(?:[^\\([#\s.]+|\\(?!k<[\w$]+>|[pP]{[^}]+})[\S\s]?|\((?=\?(?!#|<[\w$]+>)))+|(\()(?:\?(?:(#)[^)]*\)|<([$\w]+)>))?|\\(?:k<([\w$]+)>|[pP]{([^}]+)})|(\[\^?)|([\S\s])/g,
replaceVar: /(?:[^$]+|\$(?![1-9$&`']|{[$\w]+}))+|\$(?:([1-9]\d*|[$&`'])|{([$\w]+)})/g,
extended: /^(?:\s+|#.*)+/,
quantifier: /^(?:[?*+]|{\d+(?:,\d*)?})/,
classLeft: /&&\[\^?/g,
classRight: /]/g
},
indexOf = function (array, item, from) {
for (var i = from || 0; i < array.length; i++)
if (array[i] === item) return i;
return -1;
},
brokenExecUndef = /()??/.exec("")[1] !== undefined,
plugins = {};
/**
* Accepts a pattern and flags, returns a new, extended RegExp object.
* differs from a native regex in that additional flags and syntax are
* supported and browser inconsistencies are ameliorated.
* @ignore
*/
XRegExp = function (pattern, flags) {
if (pattern instanceof RegExp) {
if (flags !== undefined)
throw TypeError("can't supply flags when constructing one RegExp from another");
return pattern.addFlags(); // new copy
}
var flags = flags || "",
singleline = flags.indexOf("s") > -1,
extended = flags.indexOf("x") > -1,
hasNamedCapture = false,
captureNames = [],
output = [],
part = lib.part,
match, cc, len, index, regex;
part.lastIndex = 0; // in case the last XRegExp compilation threw an error (unbalanced character class)
while (match = real.exec.call(part, pattern)) {
// comment pattern. this check must come before the capturing group check,
// because both match[1] and match[2] will be non-empty.
if (match[2]) {
// keep tokens separated unless the following token is a quantifier
if (!lib.quantifier.test(pattern.slice(part.lastIndex)))
output.push("(?:)");
// capturing group
} else if (match[1]) {
captureNames.push(match[3] || null);
if (match[3])
hasNamedCapture = true;
output.push("(");
// named backreference
} else if (match[4]) {
index = indexOf(captureNames, match[4]);
// keep backreferences separate from subsequent literal numbers
// preserve backreferences to named groups that are undefined at this point as literal strings
output.push(index > -1 ?
"\\" + (index + 1) + (isNaN(pattern.charAt(part.lastIndex)) ? "" : "(?:)") :
match[0]
);
// unicode element (requires plugin)
} else if (match[5]) {
output.push(plugins.unicode ?
plugins.unicode.get(match[5], match[0].charAt(1) === "P") :
match[0]
);
// character class opening delimiter ("[" or "[^")
// (non-native unicode elements are not supported within character classes)
} else if (match[6]) {
if (pattern.charAt(part.lastIndex) === "]") {
// for cross-browser compatibility with ECMA-262 v3 behavior,
// convert [] to (?!) and [^] to [\S\s].
output.push(match[6] === "[" ? "(?!)" : "[\\S\\s]");
part.lastIndex++;
} else {
// parse the character class with support for inner escapes and
// ES4's infinitely nesting intersection syntax ([&&[^&&[]]]).
cc = XRegExp.matchRecursive("&&" + pattern.slice(match.index), lib.classLeft, lib.classRight, "", {escapeChar: "\\"})[0];
output.push(match[6] + cc + "]");
part.lastIndex += cc.length + 1;
}
// dot ("."), pound sign ("#"), or whitespace character
} else if (match[7]) {
if (singleline && match[7] === ".") {
output.push("[\\S\\s]");
} else if (extended && lib.extended.test(match[7])) {
len = real.exec.call(lib.extended, pattern.slice(part.lastIndex - 1))[0].length;
// keep tokens separated unless the following token is a quantifier
if (!lib.quantifier.test(pattern.slice(part.lastIndex - 1 + len)))
output.push("(?:)");
part.lastIndex += len - 1;
} else {
output.push(match[7]);
}
} else {
output.push(match[0]);
}
}
regex = RegExp(output.join(""), real.replace.call(flags, /[sx]+/g, ""));
regex._x = {
source: pattern,
captureNames: hasNamedCapture ? captureNames : null
};
return regex;
};
/**
* Barebones plugin support for now (intentionally undocumented)
* @ignore
* @param {Object} name
* @param {Object} o
*/
XRegExp.addPlugin = function (name, o) {
plugins[name] = o;
};
/**
* Adds named capture support, with values returned as ``result.name``.
*
* Also fixes two cross-browser issues, following the ECMA-262 v3 spec:
* - captured values for non-participating capturing groups should be returned
* as ``undefined``, rather than the empty string.
* - the regex's ``lastIndex`` should not be incremented after zero-length
* matches.
* @ignore
*/
RegExp.prototype.exec = function (str) {
var match = real.exec.call(this, str),
name, i, r2;
if (match) {
// fix browsers whose exec methods don't consistently return
// undefined for non-participating capturing groups
if (brokenExecUndef && match.length > 1) {
// r2 doesn't need /g or /y, but they shouldn't hurt
r2 = new RegExp("^" + this.source + "$(?!\\s)", this.getNativeFlags());
real.replace.call(match[0], r2, function () {
for (i = 1; i < arguments.length - 2; i++) {
if (arguments[i] === undefined) match[i] = undefined;
}
});
}
// attach named capture properties
if (this._x && this._x.captureNames) {
for (i = 1; i < match.length; i++) {
name = this._x.captureNames[i - 1];
if (name) match[name] = match[i];
}
}
// fix browsers that increment lastIndex after zero-length matches
if (this.global && this.lastIndex > (match.index + match[0].length))
this.lastIndex--;
}
return match;
};
})(); // end anonymous function
} // end if(!window.XRegExp)
/**
* intentionally undocumented
* @ignore
*/
RegExp.prototype.getNativeFlags = function () {
return (this.global ? "g" : "") +
(this.ignoreCase ? "i" : "") +
(this.multiline ? "m" : "") +
(this.extended ? "x" : "") +
(this.sticky ? "y" : "");
};
/**
* Accepts flags; returns a new XRegExp object generated by recompiling
* the regex with the additional flags (may include non-native flags).
* The original regex object is not altered.
* @ignore
*/
RegExp.prototype.addFlags = function (flags) {
var regex = new XRegExp(this.source, (flags || "") + this.getNativeFlags());
if (this._x) {
regex._x = {
source: this._x.source,
captureNames: this._x.captureNames ? this._x.captureNames.slice(0) : null
};
}
return regex;
};
/**
* Accepts a context object and string; returns the result of calling
* ``exec`` with the provided string. the context is ignored but is
* accepted for congruity with ``Function.prototype.call``.
* @ignore
*/
RegExp.prototype.call = function (context, str) {
return this.exec(str);
};
/**
* Accepts a context object and arguments array; returns the result of
* calling ``exec`` with the first value in the arguments array. the context
* is ignored but is accepted for congruity with ``Function.prototype.apply``.
* @ignore
*/
RegExp.prototype.apply = function (context, args) {
return this.exec(args[0]);
};
/**
* Accepts a pattern and flags; returns an XRegExp object. if the pattern
* and flag combination has previously been cached, the cached copy is
* returned, otherwise the new object is cached.
* @ignore
*/
XRegExp.cache = function (pattern, flags) {
var key = "/" + pattern + "/" + (flags || "");
return XRegExp.cache[key] || (XRegExp.cache[key] = new XRegExp(pattern, flags));
};
/**
* Accepts a string; returns the string with regex metacharacters escaped.
* the returned string can safely be used within a regex to match a literal
* string. escaped characters are [, ], {, }, (, ), -, *, +, ?, ., \, ^, $,
* |, #, [comma], and whitespace.
* @ignore
*/
XRegExp.escape = function (str) {
return str.replace(/[-[\]{}()*+?.\\^$|,#\s]/g, "\\$&");
};
/**
* Accepts a string to search, left and right delimiters as regex pattern
* strings, optional regex flags (may include non-native s, x, and y flags),
* and an options object which allows setting an escape character and changing
* the return format from an array of matches to a two-dimensional array of
* string parts with extended position data. returns an array of matches
* (optionally with extended data), allowing nested instances of left and right
* delimiters. use the g flag to return all matches, otherwise only the first
* is returned. if delimiters are unbalanced within the subject data, an error
* is thrown.
*
* This function admittedly pushes the boundaries of what can be accomplished
* sensibly without a "real" parser. however, by doing so it provides flexible
* and powerful recursive parsing capabilities with minimal code weight.
*
* Warning: the ``escapeChar`` option is considered experimental and might be
* changed or removed in future versions of XRegExp.
*
* unsupported features:
* - backreferences within delimiter patterns when using ``escapeChar``.
* - although providing delimiters as regex objects adds the minor feature of
* independent delimiter flags, it introduces other limitations and is only
* intended to be done by the ``XRegExp`` constructor (which can't call
* itself while building a regex).
*
* @ignore
*/
XRegExp.matchRecursive = function (str, left, right, flags, options) {
var options = options || {},
escapeChar = options.escapeChar,
vN = options.valueNames,
flags = flags || "",
global = flags.indexOf("g") > -1,
ignoreCase = flags.indexOf("i") > -1,
multiline = flags.indexOf("m") > -1,
sticky = flags.indexOf("y") > -1,
/* sticky mode has its own handling in this function, which means you
can use flag "y" even in browsers which don't support it natively */
flags = flags.replace(/y/g, ""),
left = left instanceof RegExp ? (left.global ? left : left.addFlags("g")) : new XRegExp(left, "g" + flags),
right = right instanceof RegExp ? (right.global ? right : right.addFlags("g")) : new XRegExp(right, "g" + flags),
output = [],
openTokens = 0,
delimStart = 0,
delimEnd = 0,
lastOuterEnd = 0,
outerStart, innerStart, leftMatch, rightMatch, escaped, esc;
if (escapeChar) {
if (escapeChar.length > 1) throw SyntaxError("can't supply more than one escape character");
if (multiline) throw TypeError("can't supply escape character when using the multiline flag");
escaped = XRegExp.escape(escapeChar);
/* Escape pattern modifiers:
/g - not needed here
/i - included
/m - **unsupported**, throws error
/s - handled by XRegExp when delimiters are provided as strings
/x - handled by XRegExp when delimiters are provided as strings
/y - not needed here; supported by other handling in this function
*/
esc = new RegExp(
"^(?:" + escaped + "[\\S\\s]|(?:(?!" + left.source + "|" + right.source + ")[^" + escaped + "])+)+",
ignoreCase ? "i" : ""
);
}
while (true) {
/* advance the starting search position to the end of the last delimiter match.
a couple special cases are also covered:
- if using an escape character, advance to the next delimiter's starting position,
skipping any escaped characters
- first time through, reset lastIndex in case delimiters were provided as regexes
*/
left.lastIndex = right.lastIndex = delimEnd +
(escapeChar ? (esc.exec(str.slice(delimEnd)) || [""])[0].length : 0);
leftMatch = left.exec(str);
rightMatch = right.exec(str);
// only keep the result which matched earlier in the string
if (leftMatch && rightMatch) {
if (leftMatch.index <= rightMatch.index)
rightMatch = null;
else leftMatch = null;
}
/* paths*:
leftMatch | rightMatch | openTokens | result
1 | 0 | 1 | ...
1 | 0 | 0 | ...
0 | 1 | 1 | ...
0 | 1 | 0 | throw
0 | 0 | 1 | throw
0 | 0 | 0 | break
* - does not include the sticky mode special case
- the loop ends after the first completed match if not in global mode
*/
if (leftMatch || rightMatch) {
delimStart = (leftMatch || rightMatch).index;
delimEnd = (leftMatch ? left : right).lastIndex;
} else if (!openTokens) {
break;
}
if (sticky && !openTokens && delimStart > lastOuterEnd)
break;
if (leftMatch) {
if (!openTokens++) {
outerStart = delimStart;
innerStart = delimEnd;
}
} else if (rightMatch && openTokens) {
if (!--openTokens) {
if (vN) {
if (vN[0] && outerStart > lastOuterEnd)
output.push([vN[0], str.slice(lastOuterEnd, outerStart), lastOuterEnd, outerStart]);
if (vN[1]) output.push([vN[1], str.slice(outerStart, innerStart), outerStart, innerStart]);
if (vN[2]) output.push([vN[2], str.slice(innerStart, delimStart), innerStart, delimStart]);
if (vN[3]) output.push([vN[3], str.slice(delimStart, delimEnd), delimStart, delimEnd]);
} else {
output.push(str.slice(innerStart, delimStart));
}
lastOuterEnd = delimEnd;
if (!global)
break;
}
} else {
// reset lastIndex in case delimiters were provided as regexes
left.lastIndex = right.lastIndex = 0;
throw Error("subject data contains unbalanced delimiters");
}
// if the delimiter matched an empty string, advance delimEnd to avoid an infinite loop
if (delimStart === delimEnd)
delimEnd++;
}
if (global && !sticky && vN && vN[0] && str.length > lastOuterEnd)
output.push([vN[0], str.slice(lastOuterEnd), lastOuterEnd, str.length]);
// reset lastIndex in case delimiters were provided as regexes
left.lastIndex = right.lastIndex = 0;
return output;
};