datetimepicker/javascripts/parse.js

// Parse and Format Library
//http://www.xaprb.com/blog/2005/12/12/javascript-closures-for-runtime-efficiency/
/*
 * Copyright (C) 2004 Baron Schwartz <baron at sequent dot org>
 *
 * This program 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, version 2.1.
 *
 * This program 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 Lesser General Public License for more
 * details.
 */
Date.parseFunctions={count:0};Date.parseRegexes=[];Date.formatFunctions={count:0};Date.prototype.dateFormat=function(b){if(b=="unixtime"){return parseInt(this.getTime()/1000);}if(Date.formatFunctions[b]==null){Date.createNewFormat(b);}var a=Date.formatFunctions[b];return this[a]();};Date.createNewFormat=function(format){var funcName="format"+Date.formatFunctions.count++;Date.formatFunctions[format]=funcName;var code="Date.prototype."+funcName+" = function() {return ";var special=false;var ch="";for(var i=0;i<format.length;++i){ch=format.charAt(i);if(!special&&ch=="\\"){special=true;}else{if(special){special=false;code+="'"+String.escape(ch)+"' + ";}else{code+=Date.getFormatCode(ch);}}}eval(code.substring(0,code.length-3)+";}");};Date.getFormatCode=function(a){switch(a){case"d":return"String.leftPad(this.getDate(), 2, '0') + ";case"D":return"Date.dayNames[this.getDay()].substring(0, 3) + ";case"j":return"this.getDate() + ";case"l":return"Date.dayNames[this.getDay()] + ";case"S":return"this.getSuffix() + ";case"w":return"this.getDay() + ";case"z":return"this.getDayOfYear() + ";case"W":return"this.getWeekOfYear() + ";case"F":return"Date.monthNames[this.getMonth()] + ";case"m":return"String.leftPad(this.getMonth() + 1, 2, '0') + ";case"M":return"Date.monthNames[this.getMonth()].substring(0, 3) + ";case"n":return"(this.getMonth() + 1) + ";case"t":return"this.getDaysInMonth() + ";case"L":return"(this.isLeapYear() ? 1 : 0) + ";case"Y":return"this.getFullYear() + ";case"y":return"('' + this.getFullYear()).substring(2, 4) + ";case"a":return"(this.getHours() < 12 ? 'am' : 'pm') + ";case"A":return"(this.getHours() < 12 ? 'AM' : 'PM') + ";case"g":return"((this.getHours() %12) ? this.getHours() % 12 : 12) + ";case"G":return"this.getHours() + ";case"h":return"String.leftPad((this.getHours() %12) ? this.getHours() % 12 : 12, 2, '0') + ";case"H":return"String.leftPad(this.getHours(), 2, '0') + ";case"i":return"String.leftPad(this.getMinutes(), 2, '0') + ";case"s":return"String.leftPad(this.getSeconds(), 2, '0') + ";case"O":return"this.getGMTOffset() + ";case"T":return"this.getTimezone() + ";case"Z":return"(this.getTimezoneOffset() * -60) + ";default:return"'"+String.escape(a)+"' + ";}};Date.parseDate=function(a,c){if(c=="unixtime"){return new Date(!isNaN(parseInt(a))?parseInt(a)*1000:0);}if(Date.parseFunctions[c]==null){Date.createParser(c);}var b=Date.parseFunctions[c];return Date[b](a);};Date.createParser=function(format){var funcName="parse"+Date.parseFunctions.count++;var regexNum=Date.parseRegexes.length;var currentGroup=1;Date.parseFunctions[format]=funcName;var code="Date."+funcName+" = function(input) {\nvar y = -1, m = -1, d = -1, h = -1, i = -1, s = -1, z = -1;\nvar d = new Date();\ny = d.getFullYear();\nm = d.getMonth();\nd = d.getDate();\nvar results = input.match(Date.parseRegexes["+regexNum+"]);\nif (results && results.length > 0) {";var regex="";var special=false;var ch="";for(var i=0;i<format.length;++i){ch=format.charAt(i);if(!special&&ch=="\\"){special=true;}else{if(special){special=false;regex+=String.escape(ch);}else{obj=Date.formatCodeToRegex(ch,currentGroup);currentGroup+=obj.g;regex+=obj.s;if(obj.g&&obj.c){code+=obj.c;}}}}code+="if (y > 0 && z > 0){\nvar doyDate = new Date(y,0);\ndoyDate.setDate(z);\nm = doyDate.getMonth();\nd = doyDate.getDate();\n}";code+="if (y > 0 && m >= 0 && d > 0 && h >= 0 && i >= 0 && s >= 0)\n{return new Date(y, m, d, h, i, s);}\nelse if (y > 0 && m >= 0 && d > 0 && h >= 0 && i >= 0)\n{return new Date(y, m, d, h, i);}\nelse if (y > 0 && m >= 0 && d > 0 && h >= 0)\n{return new Date(y, m, d, h);}\nelse if (y > 0 && m >= 0 && d > 0)\n{return new Date(y, m, d);}\nelse if (y > 0 && m >= 0)\n{return new Date(y, m);}\nelse if (y > 0)\n{return new Date(y);}\n}return null;}";Date.parseRegexes[regexNum]=new RegExp("^"+regex+"$");eval(code);};Date.formatCodeToRegex=function(b,a){switch(b){case"D":return{g:0,c:null,s:"(?:Sun|Mon|Tue|Wed|Thu|Fri|Sat)"};case"j":case"d":return{g:1,c:"d = parseInt(results["+a+"], 10);\n",s:"(\\d{1,2})"};case"l":return{g:0,c:null,s:"(?:"+Date.dayNames.join("|")+")"};case