shcore.js

Ajax下日志框架

		
		return line;
	}

	// Go through all the lines and do the 'smart tabs' magic.
	for(var i = 0; i < lines.length; i++)
		result += ProcessLine(lines[i], tabSize) + '\n';
	
	return result;
}

dp.sh.Highlighter.prototype.SwitchToTable = function()
{
	// thanks to Lachlan Donald from SitePoint.com for this <br/> tag fix.
	var html	= this.div.innerHTML.replace(/<(br)\/?>/gi, '\n');
	var lines	= html.split('\n');
	var row		= null;
	var cell	= null;
	var tBody	= null;
	var html	= '';
	var pipe	= ' | ';

	// creates an anchor to a utility
	function UtilHref(util, text)
	{
		return '<a href="#" onclick="dp.sh.Utils.' + util + '(this); return false;">' + text + '</a>';
	}
	
	tBody = document.createElement('TBODY');	// can be created and all others go to tBodies collection.

	this.table.appendChild(tBody);
		
	if(this.addGutter == true)
	{
		row = tBody.insertRow(-1);
		cell = row.insertCell(-1);
		cell.className = 'tools-corner';
	}

	if(this.addControls == true)
	{
		var tHead = document.createElement('THEAD');	// controls will be placed in here
		this.table.appendChild(tHead);

		row = tHead.insertRow(-1);

		// add corner if there's a gutter
		if(this.addGutter == true)
		{
			cell = row.insertCell(-1);
			cell.className = 'tools-corner';
		}
		
		cell = row.insertCell(-1);
		
		// preserve some variables for the controls
		cell.originalCode = this.originalCode;
		cell.processedCode = this.code;
		cell.className = 'tools';
		
		if(this.collapse == true)
		{
			tBody.className = 'hide';
			cell.innerHTML += '<span><b>' + UtilHref('Expand', dp.sh.Strings.ExpandCode) + '</b>' + pipe + '</span>';
		}

		cell.innerHTML += UtilHref('ViewSource', dp.sh.Strings.ViewPlain) + pipe + UtilHref('PrintSource', dp.sh.Strings.Print);
		
		// IE has this clipboard object which is easy enough to use
		if(window.clipboardData)
			cell.innerHTML += pipe + UtilHref('ToClipboard', dp.sh.Strings.CopyToClipboard);
		
		cell.innerHTML += pipe + UtilHref('About', dp.sh.Strings.About);
	}

	for(var i = 0, lineIndex = this.firstLine; i < lines.length - 1; i++, lineIndex++)
	{
		row = tBody.insertRow(-1);
		
		if(this.addGutter == true)
		{
			cell = row.insertCell(-1);
			cell.className = 'gutter';
			cell.innerHTML = lineIndex;
		}

		cell = row.insertCell(-1);
		cell.className = 'line' + (i % 2 + 1);		// uses .line1 and .line2 css styles for alternating lines
		cell.innerHTML = lines[i];
	}
	
	this.div.innerHTML	= '';
}

dp.sh.Highlighter.prototype.Highlight = function(code)
{
	function Trim(str)
	{
		return str.replace(/^\s*(.*?)[\s\n]*$/g, '$1');
	}
	
	function Chop(str)
	{
		return str.replace(/\n*$/, '').replace(/^\n*/, '');
	}

	function Unindent(str)
	{
		var lines = str.split('\n');
		var indents = new Array();
		var regex = new RegExp('^\\s*', 'g');
		var min = 1000;

		// go through every line and check for common number of indents
		for(var i = 0; i < lines.length && min > 0; i++)
		{
			if(Trim(lines[i]).length == 0)
				continue;
				
			var matches = regex.exec(lines[i]);

			if(matches != null && matches.length > 0)
				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');
	}
	
	// This function returns a portions of the string from pos1 to pos2 inclusive
	function Copy(string, pos1, pos2)
	{
		return string.substr(pos1, pos2 - pos1);
	}

	var pos	= 0;
	
	this.originalCode = code;
	this.code = Chop(Unindent(code));
	this.div = document.createElement('DIV');
	this.table = document.createElement('TABLE');
	this.matches = new Array();

	if(this.CssClass != null)
		this.table.className = this.CssClass;

	// replace tabs with spaces
	if(this.tabsToSpaces == true)
		this.code = this.ProcessSmartTabs(this.code);

	this.table.border = 0;
	this.table.cellSpacing = 0;
	this.table.cellPadding = 0;

	this.ProcessRegexList();	

	// if no matches found, add entire code as plain text
	if(this.matches.length == 0)
	{
		this.AddBit(this.code, null);
		this.SwitchToTable();
		return;
	}

	// sort the matches
	this.matches = this.matches.sort(dp.sh.Highlighter.SortCallback);

	// The following loop checks to see if any of the matches are inside
	// of other matches. This process would get rid of highligting strings
	// inside comments, keywords inside strings and so on.
	for(var i = 0; i < this.matches.length; i++)
		if(this.IsInside(this.matches[i]))
			this.matches[i] = null;

	// 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 < this.matches.length; i++)
	{
		var match = this.matches[i];

		if(match == null || match.length == 0)
			continue;
		
		this.AddBit(Copy(this.code, pos, match.index), null);
		this.AddBit(match.value, match.css);
		
		pos = match.index + match.length;
	}
	
	this.AddBit(this.code.substr(pos), null);

	this.SwitchToTable();
}

dp.sh.Highlighter.prototype.GetKeywords = function(str) 
{
	return '\\b' + str.replace(/ /g, '\\b|\\b') + '\\b';
}

// highlightes all elements identified by name and gets source code from specified property
dp.sh.HighlightAll = function(name, showGutter /* optional */, showControls /* optional */, collapseAll /* optional */, firstLine /* optional */)
{
	function FindValue()
	{
		var a = arguments;
		
		for(var i = 0; i < a.length; i++)
		{
			if(a[i] == null)
				continue;
				
			if(typeof(a[i]) == 'string' && a[i] != '')
				return a[i] + '';
		
			if(typeof(a[i]) == 'object' && a[i].value != '')
				return a[i].value + '';
		}
		
		return null;
	}
	
	function IsOptionSet(value, list)
	{
		for(var i = 0; i < list.length; i++)
			if(list[i] == value)
				return true;
		
		return false;
	}
	
	function GetOptionValue(name, list, defaultValue)
	{
		var regex = new RegExp('^' + name + '\\[(\\w+)\\]$', 'gi');
		var matches = null;

		for(var i = 0; i < list.length; i++)
			if((matches = regex.exec(list[i])) != null)
				return matches[1];
		
		return defaultValue;
	}

	var elements = document.getElementsByName(name);
	var highlighter = null;
	var registered = new Object();
	var propertyName = 'value';
	
	// if no code blocks found, leave
	if(elements == null)
		return;

	// register all brushes
	for(var brush in dp.sh.Brushes)
	{
		var aliases = dp.sh.Brushes[brush].Aliases;
		
		if(aliases == null)
			continue;
		
		for(var i = 0; i < aliases.length; i++)
			registered[aliases[i]] = brush;
	}

	for(var i = 0; i < elements.length; i++)
	{
		var element = elements[i];
		var options = FindValue(
				element.attributes['class'], element.className, 
				element.attributes['language'], element.language
				);
		var language = '';
		
		if(options == null)
			continue;
		
		options = options.split(':');
		
		language = options[0].toLowerCase();
		
		if(registered[language] == null)
			continue;
		
		// instantiate a brush
		highlighter = new dp.sh.Brushes[registered[language]]();
		
		// hide the original element
		element.style.display = 'none';

		highlighter.addGutter = (showGutter == null) ? !IsOptionSet('nogutter', options) : showGutter;
		highlighter.addControls = (showControls == null) ? !IsOptionSet('nocontrols', options) : showControls;
		highlighter.collapse = (collapseAll == null) ? IsOptionSet('collapse', options) : collapseAll;
		
		// first line idea comes from Andrew Collington, thanks!
		highlighter.firstLine = (firstLine == null) ? parseInt(GetOptionValue('firstline', options, 1)) : firstLine;

		highlighter.Highlight(element[propertyName]);

		// place the result table inside a div
		var div = document.createElement('DIV');
		
		div.className = 'dp-highlighter';
		div.appendChild(highlighter.table);

		element.parentNode.insertBefore(div, element);		
	}	
}