codeutil.jsc

JSVM打包文件具体功能JSVM to JS

# language: JSVM2

package com.homolo.ide.tools;

import js.lang.NotSupportException;

class CodeUtil ()
{
	/* Don't let anyone instantiate this class 
	 */
	throw new NotSupportException(CodeUtil.getName()
		+ ' cannot be instantiated.');
}

CodeUtil.compress = function (src)
{
	var ss, ds = src.replace(/\r\n/g, '\n');

	var regExps_strings = [/("(\\"|[^"\n]|(\\\n))*")/g, /('(\\'|[^'\n]|(\\\n))*')/g];
	var strings_tmpPrefix = '${COMPILE_CONST_S_' + new Date().getTime();
	var strings_tmpSuffix = '}';

	var constStrs = [];
	var tmpStrs = ds.match(regExps_strings[0]);
	if (tmpStrs != null)
	{
		constStrs = constStrs.concat(tmpStrs);
	}
	var tmpStrs = ds.match(regExps_strings[1]);
	if (tmpStrs != null)
	{
		constStrs = constStrs.concat(tmpStrs);
	}
	for (var i = 0; i < constStrs.length; i++)
	{
		ds = ds.replace(constStrs[i],
			(strings_tmpPrefix + i + strings_tmpSuffix));
	}

	ds = ds.replace(/([^\\]|^)\/\/([^\n])*/g, '$1')
		.replace(/(\/\*)\/?(([^\*]\/)|[^\/])*(\*\/)/g, '');

	var regExps_regexps = /(\/(\\\/|[^\/\n])*\/)/g;
	var regexps_tmpPrefix = "${COMPILE_CONST_R_" + new Date().getTime();
	var regexps_tmpSuffix = "}";

	var constRegExps = ds.match(regExps_regexps);
	if (constRegExps != null)
	{
		for (var i = 0; i < constStrs.length; i++)
		{
			ds = ds.replace(constRegExps[i],
				(regexps_tmpPrefix + i + regexps_tmpSuffix));
		}
	}

	while(ds != ss)
	{
		ss = ds;
		ds = ss.replace(/(\ |\t)(=|>|<|\{|\}|\(|\)|\+|\-|\*|\?|\:|\;|\,)/g, '$2')
		.replace(/(=|>|<|\{|\}|\(|\)|\+|\-|\*|\?|\:|\;|\,)(\ |\t)/g, '$1')
		.replace(/(\ |\t)==/g, '==')
		.replace(/==(\ |\t)/g, '==')
		.replace(/(\ |\t)!=/g, '!=')
		.replace(/!=(\ |\t)/g, '!=')
		.replace(/(\ |\t)<=/g, '<=')
		.replace(/<=(\ |\t)/g, '<=')
		.replace(/(\ |\t)>=/g, '>=')
		.replace(/>=(\ |\t)/g, '>=')
		.replace(/(\ |\t)&&/g, '&&')
		.replace(/&&(\ |\t)/g, '&&')
		.replace(/(\ |\t)\|\|/g, '||')
		.replace(/\|\|(\ |\t)/g, '||');
	}

	ss = "";
	while(ds != ss)
	{
		ss = ds;
		ds = ss.replace(/\n\n/g, '\n')
		.replace(/\n(\s)+/g, '\n')
		.replace(/(\s)+\n/g, '\n')
		.replace(/(\n)*\{(\n)*/g, '{')
		.replace(/(\n)*\}/g, '}')
		.replace(/(\n)*\((\n)*/g, '(')
		.replace(/(\n)*\)/g, ')')
		.replace(/\{\n\{/g, '{{')
		.replace(/\}\n\}/g, '}}')
		.replace(/\)\n\)/g, '))')
		.replace(/\(\n\(/g, '((')
		.replace(/(\n)else/g, 'else')
		.replace(/(\n)catch/g, 'catch')
		.replace(/(\n)finally/g, 'finally')
		.replace(/\n(\+|\-|\*|\&|\||=|\.|\?|:|\,|;|>|<)/g, '$1')
		.replace(/(\+|\-|\*|\&|\||=|\.|\?|:|\,|;|>|<)\n/g, '$1')
		.replace(/\n&&/g, '&&')
		.replace(/&&\n/g, '&&')
		.replace(/\n\|\|/g, '||')
		.replace(/\|\|\n/g, '||')
		.replace(/\n>=/g, '>=')
		.replace(/>=\n/g, '>=')
		.replace(/\n<=/g, '<=')
		.replace(/<=\n/g, '<=')
		.replace(/\n\!=/g, '!=')
		.replace(/\!=\n/g, '!=')
		.replace(/(;|\{)(\}+)(\n)+/g, '$1$2;');
	}

	if (constRegExps != null)
	{
		for (var i = 0; i < constRegExps.length; i++)
		{
			ds = ds.replace((regexps_tmpPrefix + i
			+ regexps_tmpSuffix),	constRegExps[i]);
		}
	}
	for (var i = 0; i < constStrs.length; i++)
	{
		ds = ds.replace((strings_tmpPrefix + i
		+ strings_tmpSuffix),	constStrs[i]);
	}
	return ds;
}


CodeUtil.toStrContent = function (s)
{
	return String(s)
		.replace(/\\/g, '\\\\')
		.replace(/"/g, '\\"')
		.replace(/\r/g, '\\r')
		.replace(/\n/g, '\\n');
}

CodeUtil.toStrExpression = function (s)
{
	return '"' + CodeUtil.toStrContent(s)	+ '"';
}