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720 lines
26 KiB
JavaScript
720 lines
26 KiB
JavaScript
/*
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Copyright (c) 2003 Jan-Klaas Kollhof
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This file is part of the JavaScript o lait library(jsolait).
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jsolait is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This software is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this software; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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Evaluates script in a global scope.
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@param [0] The code to evaluate.
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*/
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globalEval=function(){
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return eval(arguments[0]);
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}
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/**
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Creates a new class object which inherits from superClass.
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@param className="anonymous" The name of the new class.
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If the created class is a public member of a module then
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the className is automatically set.
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@param superClass=Object The class to inherit from (super class).
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@param classScope A function which is executed for class construction.
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As 1st parameter it will get the new class' protptype for
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overrideing or extending the super class. As 2nd parameter it will get
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the super class' wrapper for calling inherited methods.
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*/
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Class = function(className, superClass, classScope){
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if(arguments.length == 2){
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classScope = superClass;
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if(typeof className != "string"){
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superClass = className;
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className = "anonymous";
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}else{
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superClass = Object;
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}
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}else if(arguments.length == 1){
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classScope = className;
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superClass = Object;
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className = "anonymous";
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}
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//this is the constructor for the new objects created from the new class.
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//if and only if it is NOT used for prototyping/subclassing the init method of the newly created object will be called.
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var NewClass = function(calledBy){
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if(calledBy !== Class){
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return this.init.apply(this, arguments);
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}
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}
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//This will create a new prototype object of the new class.
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NewClass.createPrototype = function(){
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return new NewClass(Class);
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}
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//setting class properties for the new class.
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NewClass.superClass = superClass;
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NewClass.className=className;
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NewClass.toString = function(){
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return "[class %s]".format(NewClass.className);
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};
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if(superClass.createPrototype!=null){//see if the super class can create prototypes. (creating an object without calling init())
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NewClass.prototype = superClass.createPrototype();
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}else{//just create an object of the super class
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NewClass.prototype = new superClass();
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}
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//reset the constructor for new objects to the actual constructor.
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NewClass.prototype.constructor = NewClass;
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if(superClass == Object){//all other objects already have a nice toString method.
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NewClass.prototype.toString = function(){
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return "[object %s]".format(this.constructor.className);
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};
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}
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if(NewClass.prototype.init==null){
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NewClass.prototype.init=function(){
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}
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}
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//create a supr function to be used to call methods of the super class
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var supr = function(self){
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//set up super class functionality so a call to super(this) will return an object with all super class methods
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//the methods can be called like super(this).foo and the this object will be bound to that method
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var wrapper = {};
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var superProto = superClass.prototype;
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for(var n in superProto){
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if(typeof superProto[n] == "function"){
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wrapper[n] = function(){
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var f = arguments.callee;
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return superProto[f._name].apply(self, arguments);
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}
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wrapper[n]._name = n;
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}
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}
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return wrapper;
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}
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//execute the scope of the class
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classScope(NewClass.prototype, supr);
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return NewClass;
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}
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Class.toString = function(){
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return "[object Class]";
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}
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Class.createPrototype=function(){
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throw "Can't use Class as a super class.";
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}
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/**
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Creates a new module and registers it.
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@param name The name of the module.
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@param version The version of a module.
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@param moduleScope A function which is executed for module creation.
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As 1st parameter it will get the module variable.
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*/
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Module = function(name, version, moduleScope){
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var mod = new Object();
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mod.version = version;
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mod.name = name;
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mod.toString=function(){
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return "[module '%s' version: %s]".format(mod.name, mod.version);
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}
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/**
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Base class for all module-Exceptions.
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*/
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mod.Exception=Class("Exception", function(publ){
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/**
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Initializes a new Exception.
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@param msg The error message for the user.
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@param trace=null The error causing this Exception if available.
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*/
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publ.init=function(msg, trace){
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this.name = this.constructor.className;
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this.message = msg;
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this.trace = trace;
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}
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publ.toString=function(){
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var s = "%s %s\n\n".format(this.name, this.module);
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s += this.message;
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return s;
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}
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/**
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Returns the complete trace of the exception.
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@return The error trace.
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*/
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publ.toTraceString=function(){
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var s = "%s %s:\n ".format(this.name, this.module );
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s+="%s\n\n".format(this.message);
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if(this.trace){
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if(this.trace.toTraceString){
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s+= this.trace.toTraceString();
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}else{
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s+= this.trace;
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}
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}
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return s;
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}
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///The name of the Exception(className).
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publ.name;
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///The error message.
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publ.message;
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///The module the Exception belongs to.
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publ.module = mod;
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///The error which caused the Exception or null.
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publ.trace;
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})
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//execute the scope of the module
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moduleScope(mod);
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//todo: set classNames for anonymous classes.
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for(var n in mod){
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if(mod[n].className == "anonymous"){
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mod[n].className = n;
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}
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}
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if(name != "jsolait"){
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jsolait.registerModule(mod);
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}
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return mod;
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}
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Module.toString = function(){
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return "[object Module]";
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}
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Module.createPrototype=function(){
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throw "Can't use Module as a super class.";
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}
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//docstart
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/**
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The root module for jsolait.
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It provides some global functionality for loading modules,
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some String enhancements.
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*/
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Module("jsolait", "0.1.0", function(mod){
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///The global jsolait object.
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jsolait=mod;
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///base url for user modules.
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mod.baseURL=".";
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///The URL where jsolait is installed.
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/// viniciuscb 2004-11-18 - to work with eGroupWare
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///mod.libURL ="./jsolait";
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mod.libURL =GLOBALS['serverRoot']+"/phpgwapi/js/jsolait";
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///Collection of all loaded modules.(module cache)
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mod.modules = new Array();
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///The URLs of there the modules, part of jsolait.
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mod.moduleURLs = {urllib:"%(libURL)s/lib/urllib.js",
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xml:"%(libURL)s/lib/xml.js",
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crypto:"%(libURL)s/lib/crypto.js",
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codecs:"%(libURL)s/lib/codecs.js",
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jsonrpc:"%(libURL)s/lib/jsonrpc.js",
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lang:"%(libURL)s/lib/lang.js",
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xmlrpc:"%(libURL)s/lib/xmlrpc.js"};
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mod.init=function(){
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//make jsolait work with WScript
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var ws = null;
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try{//see if WScript is available
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ws = WScript;
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}catch(e){
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}
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if(ws != null){
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initWS();
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}
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}
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///initializes jsolait for using it with WScript
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var initWS = function(){
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print=function(msg){
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WScript.echo(msg);
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}
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alert=function(msg){
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print(msg);
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}
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var args = WScript.arguments;
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try{
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//get script to execute
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var url = args(0);
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url = url.replace(/\\/g, "/");
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url = url.split("/");
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url = url.slice(0, url.length-1);
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//set base for user module loading
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mod.baseURL = url.join("/");
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}catch(e){
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throw new mod.Exception("Missing script filename to be run.", e);
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}
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//location of jsolait/init.js
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url = WScript.ScriptFullName;
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if(args(0).replace("file://","").toLowerCase() == url.toLowerCase()){
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WScript.stderr.write("Can't run myself! exiting ... \n");
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return;
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}
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url = url.replace(/\\/g, "/");
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url = url.split("/");
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url = url.slice(0, url.length-1);
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mod.libURL = "file://" + url.join("/");
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try{
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mod.loadScript(args(0));
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}catch(e){
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WScript.stdErr.write("%s(1,1) jsolait runtime error:\n%s\n".format(args(0).replace("file://",""), e.toTraceString()));
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}
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}
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/**
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Imports a module given its name(someModule.someSubModule).
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A module's file location is determined by treating each module name as a directory.
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Only the last one points to a file.
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If the module's URL is not known to jsolait then it will be searched for in jsolait.baseURL which is "." by default.
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@param name The name of the module to load.
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@return The module object.
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*/
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mod.importModule = function(name){
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if (mod.modules[name]){ //module already loaded
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return mod.modules[name];
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}else{
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var src,modURL;
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//check if jsolait already knows the url of the module(moduleURLs contains urls to modules)
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if(mod.moduleURLs[name]){
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modURL = mod.moduleURLs[name].format(mod);
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}else{//assume it's a user module and located at baseURL
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modURL = "%s/%s.js".format(mod.baseURL, name.split(".").join("/"));
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}
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try{//to load module from location calculated above
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src = getFile(modURL);
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}catch(e){//module could not be found at the location.
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throw new mod.ModuleImportFailed(name, modURL, e);
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}
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try{//interpret the script
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globalEval(src);
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}catch(e){
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throw new mod.ModuleImportFailed(name, modURL, e);
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}
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//the module should have registered itself
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return mod.modules[name];
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}
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}
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//make it global
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importModule = mod.importModule;
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/**
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Loads and interprets a script file.
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@param url The url of the script to load.
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*/
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mod.loadScript=function(url){
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var src = getFile(url);
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try{//to interpret the source
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globalEval(src);
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}catch(e){
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throw new mod.EvalFailed(url, e);
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}
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}
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/**
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Registers a new module.
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Registered modules can be imported with importModule(...).
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@param module The module to register.
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*/
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mod.registerModule = function(module){
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this.modules[module.name] = module;
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}
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/**
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Creates an HTTP request object for retreiving files.
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@return HTTP request object.
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*/
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var getHTTP=function() {
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var obj;
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try{ //to get the mozilla httprequest object
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obj = new XMLHttpRequest();
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}catch(e){
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try{ //to get MS HTTP request object
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obj=new ActiveXObject("Msxml2.XMLHTTP.4.0");
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}catch(e){
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try{ //to get MS HTTP request object
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obj=new ActiveXObject("Msxml2.XMLHTTP");
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}catch(e){
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try{// to get the old MS HTTP request object
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obj = new ActiveXObject("microsoft.XMLHTTP");
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}catch(e){
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throw new mod.Exception("Unable to get an HTTP request object.");
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}
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}
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}
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}
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return obj;
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}
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/**
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Retrieves a file given its URL.
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@param url The url to load.
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@param headers=[] The headers to use.
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@return The content of the file.
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*/
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var getFile=function(url, headers) {
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//if callback is defined then the operation is done async
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headers = (headers != null) ? headers : [];
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//setup the request
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try{
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var xmlhttp= getHTTP();
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xmlhttp.open("GET", url, false);
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for(var i=0;i< headers.length;i++){
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xmlhttp.setRequestHeader(headers[i][0], headers[i][1]);
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}
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xmlhttp.send("");
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}catch(e){
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throw new mod.Exception("Unable to load URL: '%s'.".format(url), e);
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}
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if(xmlhttp.status == 200 || xmlhttp.status == 0){
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return xmlhttp.responseText;
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}else{
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throw new mod.Exception("File not loaded: '%s'.".format(url));
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}
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}
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Error.prototype.toTraceString = function(){
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if(this.message){
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return "%s\n".format(this.message);
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}
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if (this.description){
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return "%s\n".format(this.description);
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}
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return "unknown error\n";
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}
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/**
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Thrown when a module could not be found.
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*/
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mod.ModuleImportFailed=Class(mod.Exception, function(publ, supr){
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/**
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Initializes a new ModuleImportFailed Exception.
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@param name The name of the module.
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@param url The url of the module.
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@param trace The error cousing this Exception.
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*/
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publ.init=function(moduleName, url, trace){
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supr(this).init("Failed to import module: '%s' from URL:'%s'".format(moduleName, url), trace);
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this.moduleName = moduleName;
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this.url = url;
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}
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///The name of the module that was not found.
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publ.moduleName;
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///The url the module was expected to be found at.
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publ.url;
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})
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/**
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Thrown when a source could not be loaded due to an interpretation error.
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*/
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mod.EvalFailed=Class(mod.Exception, function(publ, supr){
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/**
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Initializes a new EvalFailed exception.
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@param url The url of the module.
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@param trace The exception that was thrown while interpreting the module's source code.
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*/
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publ.init=function(url, trace){
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supr(this).init("File '%s' Eval of script failed.".format(url), trace);
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this.url = url;
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}
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///The url the module was expected to be found at.
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publ.url;
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})
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/**
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Displays an exception and it's trace.
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This works better than alert(e) because traces are taken into account.
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@param exception The exception to display.
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*/
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mod.reportException=function(exception){
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if(exception.toTraceString){
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var s= exception.toTraceString();
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}else{
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var s = exception.toString();
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}
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var ws = null;
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try{//see if WScript is available
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ws = WScript;
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}catch(e){
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}
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if(ws != null){
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WScript.stderr.write(s);
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}else{
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alert(s);
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}
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}
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///The global exception report method;
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reportException = mod.reportException;
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})
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//stringmod
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/**
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String formatting module.
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It allows python like string formatting ("some text %s" % "something").
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Also similar to sprintf from C.
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*/
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Module("stringformat", "0.1.0", function(mod){
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/**
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Creates a format specifier object.
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*/
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var FormatSpecifier=function(s){
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var s = s.match(/%(\(\w+\)){0,1}([ 0-]){0,1}(\+){0,1}(\d+){0,1}(\.\d+){0,1}(.)/);
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if(s[1]){
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this.key=s[1].slice(1,-1);
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}else{
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this.key = null;
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}
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this.paddingFlag = s[2];
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if(this.paddingFlag==""){
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this.paddingFlag =" "
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}
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this.signed=(s[3] == "+");
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this.minLength = parseInt(s[4]);
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if(isNaN(this.minLength)){
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this.minLength=0;
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}
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if(s[5]){
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this.percision = parseInt(s[5].slice(1,s[5].length));
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}else{
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this.percision=-1;
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}
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this.type = s[6];
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}
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/**
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Formats a string replacing formatting specifiers with values provided as arguments
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which are formatted according to the specifier.
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This is an implementation of python's % operator for strings and is similar to sprintf from C.
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Usage:
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resultString = formatString.format(value1, v2, ...);
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Each formatString can contain any number of formatting specifiers which are
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replaced with the formated values.
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specifier([...]-items are optional):
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"%(key)[flag][sign][min][percision]typeOfValue"
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(key) If specified the 1st argument is treated as an object/associative array and the formating values
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are retrieved from that object using the key.
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flag:
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0 Use 0s for padding.
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- Left justify result, padding it with spaces.
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Use spaces for padding.
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sign:
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+ Numeric values will contain a +|- infront of the number.
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min:
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l The string will be padded with the padding character until it has a minimum length of l.
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percision:
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.x Where x is the percision for floating point numbers and the lenght for 0 padding for integers.
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typeOfValue:
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d Signed integer decimal.
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i Signed integer decimal.
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b Unsigned binary. //This does not exist in python!
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o Unsigned octal.
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u Unsigned decimal.
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x Unsigned hexidecimal (lowercase).
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X Unsigned hexidecimal (uppercase).
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e Floating point exponential format (lowercase).
|
|
E Floating point exponential format (uppercase).
|
|
f Floating point decimal format.
|
|
F Floating point decimal format.
|
|
c Single character (accepts byte or single character string).
|
|
s String (converts any object using object.toString()).
|
|
|
|
Examples:
|
|
"%02d".format(8) == "08"
|
|
"%05.2f".format(1.234) == "01.23"
|
|
"123 in binary is: %08b".format(123) == "123 in binary is: 01111011"
|
|
|
|
@param * Each parameter is treated as a formating value.
|
|
@return The formated String.
|
|
*/
|
|
String.prototype.format=function(){
|
|
var sf = this.match(/(%(\(\w+\)){0,1}[ 0-]{0,1}(\+){0,1}(\d+){0,1}(\.\d+){0,1}[dibouxXeEfFgGcrs%])|([^%]+)/g);
|
|
if(sf){
|
|
if(sf.join("") != this){
|
|
throw new mod.Exception("Unsupported formating string.");
|
|
}
|
|
}else{
|
|
throw new mod.Exception("Unsupported formating string.");
|
|
}
|
|
var rslt ="";
|
|
var s;
|
|
var obj;
|
|
var cnt=0;
|
|
var frmt;
|
|
var sign="";
|
|
|
|
for(var i=0;i<sf.length;i++){
|
|
s=sf[i];
|
|
if(s == "%%"){
|
|
s = "%";
|
|
}else if(s.slice(0,1) == "%"){
|
|
frmt = new FormatSpecifier(s);//get the formating object
|
|
if(frmt.key){//an object was given as formating value
|
|
if((typeof arguments[0]) == "object" && arguments.length == 1){
|
|
obj = arguments[0][frmt.key];
|
|
}else{
|
|
throw new mod.Exception("Object or associative array expected as formating value.");
|
|
}
|
|
}else{//get the current value
|
|
if(cnt>=arguments.length){
|
|
throw new mod.Exception("Not enough arguments for format string");
|
|
}else{
|
|
obj=arguments[cnt];
|
|
cnt++;
|
|
}
|
|
}
|
|
|
|
if(frmt.type == "s"){//String
|
|
if (obj == null){
|
|
obj = "null";
|
|
}
|
|
s=obj.toString().pad(frmt.paddingFlag, frmt.minLength);
|
|
|
|
}else if(frmt.type == "c"){//Character
|
|
if(frmt.paddingFlag == "0"){
|
|
frmt.paddingFlag=" ";//padding only spaces
|
|
}
|
|
if(typeof obj == "number"){//get the character code
|
|
s = String.fromCharCode(obj).pad(frmt.paddingFlag , frmt.minLength) ;
|
|
}else if(typeof obj == "string"){
|
|
if(obj.length == 1){//make sure it's a single character
|
|
s=obj.pad(frmt.paddingFlag, frmt.minLength);
|
|
}else{
|
|
throw new mod.Exception("Character of length 1 required.");
|
|
}
|
|
}else{
|
|
throw new mod.Exception("Character or Byte required.");
|
|
}
|
|
}else if(typeof obj == "number"){
|
|
//get sign of the number
|
|
if(obj < 0){
|
|
obj = -obj;
|
|
sign = "-"; //negative signs are always needed
|
|
}else if(frmt.signed){
|
|
sign = "+"; // if sign is always wanted add it
|
|
}else{
|
|
sign = "";
|
|
}
|
|
//do percision padding and number conversions
|
|
switch(frmt.type){
|
|
case "f": //floats
|
|
case "F":
|
|
if(frmt.percision > -1){
|
|
s = obj.toFixed(frmt.percision).toString();
|
|
}else{
|
|
s = obj.toString();
|
|
}
|
|
break;
|
|
case "E"://exponential
|
|
case "e":
|
|
if(frmt.percision > -1){
|
|
s = obj.toExponential(frmt.percision);
|
|
}else{
|
|
s = obj.toExponential();
|
|
}
|
|
s = s.replace("e", frmt.type);
|
|
break;
|
|
case "b"://binary
|
|
s = obj.toString(2);
|
|
s = s.pad("0", frmt.percision);
|
|
break;
|
|
case "o"://octal
|
|
s = obj.toString(8);
|
|
s = s.pad("0", frmt.percision);
|
|
break;
|
|
case "x"://hexadecimal
|
|
s = obj.toString(16).toLowerCase();
|
|
s = s.pad("0", frmt.percision);
|
|
break;
|
|
case "X"://hexadecimal
|
|
s = obj.toString(16).toUpperCase();
|
|
s = s.pad("0", frmt.percision);
|
|
break;
|
|
default://integers
|
|
s = parseInt(obj).toString();
|
|
s = s.pad("0", frmt.percision);
|
|
break;
|
|
}
|
|
if(frmt.paddingFlag == "0"){//do 0-padding
|
|
//make sure that the length of the possible sign is not ignored
|
|
s=s.pad("0", frmt.minLength - sign.length);
|
|
}
|
|
s=sign + s;//add sign
|
|
s=s.pad(frmt.paddingFlag, frmt.minLength);//do padding and justifiing
|
|
}else{
|
|
throw new mod.Exception("Number required.");
|
|
}
|
|
}
|
|
rslt += s;
|
|
}
|
|
return rslt;
|
|
}
|
|
|
|
/**
|
|
Padds a String with a character to have a minimum length.
|
|
|
|
@param flag "-": to padd with " " and left justify the string.
|
|
Other: the character to use for padding.
|
|
@param len The minimum length of the resulting string.
|
|
*/
|
|
String.prototype.pad = function(flag, len){
|
|
var s = "";
|
|
if(flag == "-"){
|
|
var c = " ";
|
|
}else{
|
|
var c = flag;
|
|
}
|
|
for(var i=0;i<len-this.length;i++){
|
|
s += c;
|
|
}
|
|
if(flag == "-"){
|
|
s = this + s;
|
|
}else{
|
|
s += this;
|
|
}
|
|
return s;
|
|
}
|
|
|
|
/**
|
|
Repeats a string.
|
|
@param c The count how often the string should be repeated.
|
|
*/
|
|
String.prototype.mul = function(c){
|
|
var a = new Array(this.length * c);
|
|
var s=""+ this;
|
|
for(var i=0;i<c;i++){
|
|
a[i] = s;
|
|
}
|
|
return a.join("");
|
|
}
|
|
})
|
|
|
|
//let jsolait do some startup initialization
|
|
jsolait.init();
|
|
|