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Filename : vkbeautify.js
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/**
* vkBeautify - javascript plugin to pretty-print or minify text in XML, JSON, CSS and SQL formats.
*  
* Version - 0.99.00.2.beta
* Copyright (c) 2012 Vadim Kiryukhin
* vkiryukhin @ gmail.com
* http://www.eslinstructor.net/vkbeautify/
* 
* Dual licensed under the MIT and GPL licenses:
*   http://www.opensource.org/licenses/mit-license.php
*   http://www.gnu.org/licenses/gpl.html
*
*   Pretty print
*
*        vkbeautify.xml(text [,indent_pattern]);
*        vkbeautify.json(text [,indent_pattern]);
*        vkbeautify.css(text [,indent_pattern]);
*        vkbeautify.sql(text [,indent_pattern]);
*
*        @text - String; text to beatufy;
*        @indent_pattern - Integer | String;
*                Integer:  number of white spaces;
*                String:   character string to visualize indentation ( can also be a set of white spaces )
*   Minify
*
*        vkbeautify.xmlmin(text [,preserve_comments]);
*        vkbeautify.jsonmin(text);
*        vkbeautify.cssmin(text [,preserve_comments]);
*        vkbeautify.sqlmin(text);
*
*        @text - String; text to minify;
*        @preserve_comments - Bool; [optional];
*                Set this flag to true to prevent removing comments from @text ( minxml and mincss functions only. )
*
*   Examples:
*        vkbeautify.xml(text); // pretty print XML
*        vkbeautify.json(text, 4 ); // pretty print JSON
*        vkbeautify.css(text, '. . . .'); // pretty print CSS
*        vkbeautify.sql(text, '----'); // pretty print SQL
*
*        vkbeautify.xmlmin(text, true);// minify XML, preserve comments
*        vkbeautify.jsonmin(text);// minify JSON
*        vkbeautify.cssmin(text);// minify CSS, remove comments ( default )
*        vkbeautify.sqlmin(text);// minify SQL
*
*/

(function() {

function createShiftArr(step) {

	var space = '    ';
	
	if ( isNaN(parseInt(step)) ) {  // argument is string
		space = step;
	} else { // argument is integer
		switch(step) {
			case 1: space = ' '; break;
			case 2: space = '  '; break;
			case 3: space = '   '; break;
			case 4: space = '    '; break;
			case 5: space = '     '; break;
			case 6: space = '      '; break;
			case 7: space = '       '; break;
			case 8: space = '        '; break;
			case 9: space = '         '; break;
			case 10: space = '          '; break;
			case 11: space = '           '; break;
			case 12: space = '            '; break;
		}
	}

	var shift = ['\n']; // array of shifts
	for(var ix=0;ix<100;ix++){
		shift.push(shift[ix]+space); 
	}
	return shift;
}

function vkbeautify(){
	this.step = '    '; // 4 spaces
	this.shift = createShiftArr(this.step);
}

vkbeautify.prototype.xml = function(text,step) {

	var ar = text.replace(/>\s*</g,"><")
				 .replace(/</g,"~::~<")
				 .replace(/\s*xmlns:/g,"~::~xmlns:")
				 .replace(/\s*xmlns=/g,"~::~xmlns=")
				 .split('~::~'),
		len = ar.length,
		inComment = false,
		deep = 0,
		str = '',
		ix,
		shift = step ? createShiftArr(step) : this.shift;

		for(ix=0;ix<len;ix++) {
			// start comment or <![CDATA[...]]> or <!DOCTYPE //
			if(ar[ix].search(/<!/) > -1) { 
				str += shift[deep]+ar[ix];
				inComment = true; 
				// end comment  or <![CDATA[...]]> //
				if(ar[ix].search(/-->/) > -1 || ar[ix].search(/]>/) > -1 || ar[ix].search(/!DOCTYPE/) > -1 ) {
					inComment = false; 
				}
			} else 
			// end comment  or <![CDATA[...]]> //
			if(ar[ix].search(/-->/) > -1 || ar[ix].search(/]>/) > -1) {
				str += ar[ix];
				inComment = false; 
			} else 
			// <elm></elm> //
			if( /^<\w/.exec(ar[ix-1]) && /^<\/\w/.exec(ar[ix]) &&
					// This comparison will eventually compare an array with a single string item to another string
					// so we voluntarily use '=='
				/^<[\w:\-\.,]+/.exec(ar[ix-1]) == /^<\/[\w:\-\.,]+/.exec(ar[ix])[0].replace('/','')) { // jshint ignore:line
				str += ar[ix];
				if(!inComment) {
					deep--;
				}
			} else
			 // <elm> //
			if(ar[ix].search(/<\w/) > -1 && ar[ix].search(/<\//) === -1 && ar[ix].search(/\/>/) === -1 ) {
				str = !inComment ? str += shift[deep++]+ar[ix] : str += ar[ix];
			} else 
			 // <elm>...</elm> //
			if(ar[ix].search(/<\w/) > -1 && ar[ix].search(/<\//) > -1) {
				str = !inComment ? str += shift[deep]+ar[ix] : str += ar[ix];
			} else 
			// </elm> //
			if(ar[ix].search(/<\//) > -1) { 
				str = !inComment ? str += shift[--deep]+ar[ix] : str += ar[ix];
			} else 
			// <elm/> //
			if(ar[ix].search(/\/>/) > -1 ) { 
				str = !inComment ? str += shift[deep]+ar[ix] : str += ar[ix];
			} else 
			// <? xml ... ?> //
			if(ar[ix].search(/<\?/) > -1) { 
				str += shift[deep]+ar[ix];
			} else 
			// xmlns //
			if( ar[ix].search(/xmlns:/) > -1  || ar[ix].search(/xmlns=/) > -1) {
				str += shift[deep]+ar[ix];
			} 
			
			else {
				str += ar[ix];
			}
		}

	return  (str.charAt(0) === '\n') ? str.slice(1) : str;
};

vkbeautify.prototype.json = function(text,step) {

	step = step ? step : this.step;
	
	if (typeof JSON === 'undefined' ) return text;
	
	if ( typeof text === "string" ) return JSON.stringify(JSON.parse(text), null, step);
	if ( typeof text === "object" ) return JSON.stringify(text, null, step);
		
	return text; // text is not string nor object
};

vkbeautify.prototype.css = function(text, step) {

	var ar = text.replace(/\s+/g,' ')
				.replace(/{/g,"{~::~")
				.replace(/}/g,"~::~}~::~")
				.replace(/;/g,";~::~")
				.replace(/\/\*/g,"~::~/*")
				.replace(/\*\//g,"*/~::~")
				.replace(/~::~\s*~::~/g,"~::~")
				.split('~::~'),
		len = ar.length,
		deep = 0,
		str = '',
		ix,
		shift = step ? createShiftArr(step) : this.shift;
		
		for(ix=0;ix<len;ix++) {

			if( /{/.exec(ar[ix]))  {
				str += shift[deep++]+ar[ix];
			} else 
			if( /}/.exec(ar[ix]))  {
				str += shift[--deep]+ar[ix];
			} else
			if( /\*\\/.exec(ar[ix]))  { 
				str += shift[deep]+ar[ix];
			}
			else {
				str += shift[deep]+ar[ix];
			}
		}
		return str.replace(/^\n+/,'');
};

//----------------------------------------------------------------------------

function isSubquery(str, parenthesisLevel) {
	return  parenthesisLevel - (str.replace(/\(/g,'').length - str.replace(/\)/g,'').length );
}

function split_sql(str, tab) {

	return str.replace(/\s+/g," ")

				.replace(/ AND /ig,"~::~"+tab+tab+"AND ")
				.replace(/ BETWEEN /ig,"~::~"+tab+"BETWEEN ")
				.replace(/ CASE /ig,"~::~"+tab+"CASE ")
				.replace(/ ELSE /ig,"~::~"+tab+"ELSE ")
				.replace(/ END /ig,"~::~"+tab+"END ")
				.replace(/ FROM /ig,"~::~FROM ")
				.replace(/ GROUP\s+BY/ig,"~::~GROUP BY ")
				.replace(/ HAVING /ig,"~::~HAVING ")
				//.replace(/ SET /ig," SET~::~")
				.replace(/ IN /ig," IN ")
				
				.replace(/ JOIN /ig,"~::~JOIN ")
				.replace(/ CROSS~::~+JOIN /ig,"~::~CROSS JOIN ")
				.replace(/ INNER~::~+JOIN /ig,"~::~INNER JOIN ")
				.replace(/ LEFT~::~+JOIN /ig,"~::~LEFT JOIN ")
				.replace(/ RIGHT~::~+JOIN /ig,"~::~RIGHT JOIN ")
				
				.replace(/ ON /ig,"~::~"+tab+"ON ")
				.replace(/ OR /ig,"~::~"+tab+tab+"OR ")
				.replace(/ ORDER\s+BY/ig,"~::~ORDER BY ")
				.replace(/ OVER /ig,"~::~"+tab+"OVER ")

				.replace(/\(\s*SELECT /ig,"~::~(SELECT ")
				.replace(/\)\s*SELECT /ig,")~::~SELECT ")
				
				.replace(/ THEN /ig," THEN~::~"+tab+"")
				.replace(/ UNION /ig,"~::~UNION~::~")
				.replace(/ USING /ig,"~::~USING ")
				.replace(/ WHEN /ig,"~::~"+tab+"WHEN ")
				.replace(/ WHERE /ig,"~::~WHERE ")
				.replace(/ WITH /ig,"~::~WITH ")
				
				//.replace(/,\s*\(/ig,",~::~( ")
				//.replace(/,/ig,",~::~"+tab+tab+"")

				.replace(/ ALL /ig," ALL ")
				.replace(/ AS /ig," AS ")
				.replace(/ ASC /ig," ASC ")	
				.replace(/ DESC /ig," DESC ")	
				.replace(/ DISTINCT /ig," DISTINCT ")
				.replace(/ EXISTS /ig," EXISTS ")
				.replace(/ NOT /ig," NOT ")
				.replace(/ NULL /ig," NULL ")
				.replace(/ LIKE /ig," LIKE ")
				.replace(/\s*SELECT /ig,"SELECT ")
				.replace(/\s*UPDATE /ig,"UPDATE ")
				.replace(/ SET /ig," SET ")
							
				.replace(/~::~+/g,"~::~")
				.split('~::~');
}

vkbeautify.prototype.sql = function(text,step) {

	var ar_by_quote = text.replace(/\s+/g," ")
							.replace(/'/ig,"~::~\'")
							.split('~::~'),
		len = ar_by_quote.length,
		ar = [],
		deep = 0,
		tab = this.step,//+this.step,
		// inComment = true,
		// inQuote = false,
		parenthesisLevel = 0,
		str = '',
		ix,
		shift = step ? createShiftArr(step) : this.shift;
	for(ix=0;ix<len;ix++) {
			if(ix%2) {
				ar = ar.concat(ar_by_quote[ix]);
			} else {
				ar = ar.concat(split_sql(ar_by_quote[ix], tab) );
			}
		}
		
		len = ar.length;
		for(ix=0;ix<len;ix++) {
			
			parenthesisLevel = isSubquery(ar[ix], parenthesisLevel);
			
			if( /\s*\s*SELECT\s*/.exec(ar[ix]))  {
				ar[ix] = ar[ix].replace(/,/g,",\n"+tab+tab+"");
			} 
			
			if( /\s*\s*SET\s*/.exec(ar[ix]))  {
				ar[ix] = ar[ix].replace(/,/g,",\n"+tab+tab+"");
			} 
			
			if( /\s*\(\s*SELECT\s*/.exec(ar[ix]))  {
				deep++;
				str += shift[deep]+ar[ix];
			} else 
			if( /'/.exec(ar[ix]) )  {
				if(parenthesisLevel<1 && deep) {
					deep--;
				}
				str += ar[ix];
			}
			else  { 
				str += shift[deep]+ar[ix];
				if(parenthesisLevel<1 && deep) {
					deep--;
				}
			} 
			// var junk = 0;
		}

		str = str.replace(/^\n+/,'').replace(/\n+/g,"\n");
		return str;
};


vkbeautify.prototype.xmlmin = function(text, preserveComments) {

	var str = preserveComments ? text
							   : text.replace(/<![ \r\n\t]*(--([^\-]|[\r\n]|-[^\-])*--[ \r\n\t]*)>/g,"")
									 .replace(/[ \r\n\t]+xmlns/g, ' xmlns');
	return  str.replace(/>\s*</g,"><");
};

vkbeautify.prototype.jsonmin = function(text) {

	if (typeof JSON === 'undefined' ) return text; 
	
	return JSON.stringify(JSON.parse(text), null, 0); 
				
};

vkbeautify.prototype.cssmin = function(text, preserveComments) {
	
	var str = preserveComments ? text
							   : text.replace(/\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\//g,"") ;

	return str.replace(/\s+/g,' ')
			  .replace(/{\s+/g,"{")
			  .replace(/}\s+/g,"}")
			  .replace(/;\s+/g,";")
			  .replace(/\/\*\s+/g,"/*")
			  .replace(/\*\/\s+/g,"*/");
};

vkbeautify.prototype.sqlmin = function(text) {
	return text.replace(/\s+/g," ").replace(/\s+\(/,"(").replace(/\s+\)/,")");
};

window.vkbeautify = new vkbeautify();

})();