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-/*--------------------------------------------------------------------------
- * EJS - Embedded JavaScript, version 0.1.0
- * Copyright (c) 2007 Edward Benson
- * http://www.edwardbenson.com/projects/ejs
- * ------------------------------------------------------------------------
- *
- * EJS is freely distributable under the terms of an MIT-style license.
- *
- * EJS is a client-side preprocessing engine written in and for JavaScript.
- * If you have used PHP, ASP, JSP, or ERB then you get the idea: code embedded
- * in <% // Code here %> tags will be executed, and code embedded in <%= .. %>
- * tags will be evaluated and appended to the output.
- *
- * This is essentially a direct JavaScript port of Masatoshi Seki's erb.rb
- * from the Ruby Core, though it contains a subset of ERB's functionality.
- *
- * Requirements:
- * prototype.js
- *
- * Usage:
- * // source should be either a string or a DOM node whose innerHTML
- * // contains EJB source.
- * var source = "<% var ejb="EJB"; %><h1>Hello, <%= ejb %>!</h1>";
- * var compiler = new EjsCompiler(source);
- * compiler.compile();
- * var output = eval(compiler.out);
- * alert(output); // -> "<h1>Hello, EJB!</h1>"
- *
- * For a demo: see demo.html
- * For the license: see license.txt
- *
- *--------------------------------------------------------------------------*/
-
-import("jsutils.*");
-import("funhtml");
-
-jimport("java.lang.System.out.println");
-jimport("net.appjet.ajstdlib.execution.executeCodeInNewScope");
-
-/* Make a split function like Ruby's: "abc".split(/b/) -> ['a', 'b', 'c'] */
-function rsplit(x, regex) {
- var item = x;
- var result = regex.exec(item);
- var retArr = new Array();
- while (result != null)
- {
- var first_idx = result.index;
- var last_idx = regex.lastIndex;
- if ((first_idx) != 0)
- {
- var first_bit = item.substring(0,first_idx);
- retArr.push(item.substring(0,first_idx));
- item = item.slice(first_idx);
- }
- retArr.push(result[0]);
- item = item.slice(result[0].length);
- result = regex.exec(item);
- }
- if (! item == '')
- {
- retArr.push(item);
- }
- return retArr;
-};
-
-/* Chop is nice to have too */
-function chop(x) {
- return x.substr(0, x.length - 1);
-}
-
-/* Adaptation from the Scanner of erb.rb */
-var EjsScanner = function(source, left, right) {
- this.left_delimiter = left +'%'; //<%
- this.right_delimiter = '%'+right; //>
- this.double_left = left+'%%';
- this.double_right = '%%'+right;
- this.left_equal = left+'%=';
- this.left_comment = left+'%#';
- if(left=='[') {
- this.SplitRegexp = /(\[%%)|(%%\])|(\[%=)|(\[%#)|(\[%)|(%\]\n)|(%\])|(\n)/;
- }
- else {
- this.SplitRegexp = new RegExp('('+this.double_left+')|(%%'+this.double_right+')|('+this.left_equal+')|('+this.left_comment+')|('+this.left_delimiter+')|('+this.right_delimiter+'\n)|('+this.right_delimiter+')|(\n)')
- }
-
- this.source = source;
- this.stag = null;
- this.lines = 0;
-};
-EjsView = function(data) {
- this.data = data;
-};
-EjsView.prototype.partial = function(options, data){
- if(!data) data = this.data;
- return new EJS(options).render(data);
-};
-
-EjsScanner.to_text = function(input){
- if(input == null || input === undefined)
- return '';
- if(input instanceof Date)
- return input.toDateString();
- if(input.toString)
- return input.toString();
- return '';
-}
-
-EjsScanner.prototype = {
-
- /* For each line, scan! */
- scan: function(block) {
- scanline = this.scanline;
- regex = this.SplitRegexp;
- if (! this.source == '')
- {
- var source_split = rsplit(this.source, /\n/);
- for(var i=0; i<source_split.length; i++) {
- var item = source_split[i];
- this.scanline(item, regex, block);
- }
- }
- },
-
- /* For each token, block! */
- scanline: function(line, regex, block) {
- this.lines++;
- var line_split = rsplit(line, regex);
- for(var i=0; i<line_split.length; i++) {
- var token = line_split[i];
- if (token != null) {
- try{
- block(token, this);
- }catch(e){
- throw {type: 'EjsScanner', line: this.lines};
- }
- }
- }
- }
-};
-
-/* Adaptation from the Buffer of erb.rb */
-var EjsBuffer = function(pre_cmd, post_cmd) {
- this.line = new Array();
- this.script = "";
- this.pre_cmd = pre_cmd;
- this.post_cmd = post_cmd;
-
- for (var i=0; i<this.pre_cmd.length; i++)
- {
- this.push(pre_cmd[i]);
- }
-}
-EjsBuffer.prototype = {
-
- push: function(cmd) {
- this.line.push(cmd);
- },
-
- cr: function() {
- this.script = this.script + this.line.join('; ');
- this.line = new Array();
- this.script = this.script + "\n";
- },
-
- close: function() {
- if (this.line.length > 0)
- {
- for (var i=0; i<this.post_cmd.length; i++)
- {
- this.push(pre_cmd[i]);
- }
- this.script = this.script + this.line.join('; ');
- line = null;
- }
- }
-
-};
-
-/* Adaptation from the Compiler of erb.rb */
-EjsCompiler = function(source, left) {
- this.pre_cmd = ['var ___ejsO = "";'];
- this.post_cmd = new Array();
- this.source = ' ';
- if (source != null)
- {
- if (typeof source == 'string')
- {
- source = source.replace(/\r\n/g, "\n");
- source = source.replace(/\r/g, "\n");
- this.source = source;
- }
- else if (source.innerHTML)
- {
- this.source = source.innerHTML;
- }
- if (typeof this.source != 'string')
- {
- this.source = "";
- }
- }
- left = left || '<'
- var right = '>'
- switch(left) {
- case '[':
- right = ']'
- break;
- case '<':
- break;
- default:
- throw left+' is not a supported deliminator'
- break;
- }
- this.scanner = new EjsScanner(this.source, left, right);
- this.out = '';
-}
-EjsCompiler.prototype = {
- compile: function(options) {
- options = options || {};
- this.out = '';
- var put_cmd = "___ejsO += ";
- var insert_cmd = put_cmd;
- var buff = new EjsBuffer(this.pre_cmd, this.post_cmd);
- var content = '';
- var clean = function(content)
- {
- content = content.replace(/\\/g, '\\\\');
- content = content.replace(/\n/g, '\\n');
- content = content.replace(/\"/g, '\\"');
- return content;
- };
- this.scanner.scan(function(token, scanner) {
- if (scanner.stag == null)
- {
- //alert(token+'|'+(token == "\n"))
- switch(token) {
- case '\n':
- content = content + "\n";
- buff.push(put_cmd + '"' + clean(content) + '";');
- buff.cr();
- content = '';
- break;
- case scanner.left_delimiter:
- case scanner.left_equal:
- case scanner.left_comment:
- scanner.stag = token;
- if (content.length > 0)
- {
- // Chould be content.dump in Ruby
-
- buff.push(put_cmd + '"' + clean(content) + '"');
- }
- content = '';
- break;
- case scanner.double_left:
- content = content + scanner.left_delimiter;
- break;
- default:
- content = content + token;
- break;
- }
- }
- else {
- switch(token) {
- case scanner.right_delimiter:
- switch(scanner.stag) {
- case scanner.left_delimiter:
- if (content[content.length - 1] == '\n')
- {
- content = chop(content);
- buff.push(content);
- buff.cr();
- }
- else {
- buff.push(content);
- }
- break;
- case scanner.left_equal:
- buff.push(insert_cmd + "(EjsScanner.to_text(" + content + "))");
- break;
- }
- scanner.stag = null;
- content = '';
- break;
- case scanner.double_right:
- content = content + scanner.right_delimiter;
- break;
- default:
- content = content + token;
- break;
- }
- }
- });
- if (content.length > 0)
- {
- // Chould be content.dump in Ruby
- buff.push(put_cmd + '"' + clean(content) + '"');
- }
- buff.close();
- this.out = buff.script + ";";
- var to_be_evaled = [
- 'var process = function(_CONTEXT,_VIEW) {',
- ' with(_VIEW) {',
- ' with (_CONTEXT) {',
- this.out,
- ' return ___ejsO;',
- ' }',
- ' }',
- '};'
- ].join('');
- // make funhtml.* available in parent scope.
- var parentScope = {};
- parentScope.EjsScanner = EjsScanner;
- keys(funhtml).forEach(function(k) {
- parentScope[k] = funhtml[k];
- });
- var ret = executeCodeInNewScope(
- parentScope,
- to_be_evaled,
- (options.name || "template"),
- 1
- );
- this.process = ret.process;
- }
-}
-
-
-//type, cache, folder
-EJS = function( options ){
- this.set_options(options);
-
- if(options.url){
- var template = EJS.get(options.url, this.cache);
- if (template) return template;
- if (template == EJS.INVALID_PATH) return null;
- this.text = EJS.request(options.url);
- if(this.text == null){
- //EJS.update(options.url, this.INVALID_PATH);
- throw 'There is no template at '+options.url;
- }
- this.name = options.url;
- }else if(options.element)
- {
- if(typeof options.element == 'string'){
- var name = options.element;
- options.element = document.getElementById( options.element );
- if(options.element == null) throw name+'does not exist!';
- }
- if(options.element.value){
- this.text = options.element.value;
- }else{
- this.text = options.element.innerHTML;
- }
- this.name = options.element.id;
- this.type = '[';
- }
- var template = new EjsCompiler(this.text, this.type);
-
- template.compile(options);
-
-
- EJS.update(this.name, this);
- this.template = template;
-};
-EJS.config = function(options){
- EJS.cache = options.cache != null ? options.cache : EJS.cache;
- EJS.type = options.type != null ? options.type : EJS.type;
- var templates_directory = {}; //nice and private container
-
- EJS.get = function(path, cache){
- if(cache == false) return null;
- if(templates_directory[path]) return templates_directory[path];
- return null;
- };
-
- EJS.update = function(path, template) {
- if(path == null) return;
- templates_directory[path] = template;
- };
-
- EJS.INVALID_PATH = -1;
-
-
-};
-EJS.config( {cache: true, type: '<' } );
-
-EJS.prototype = {
- render : function(object){
- var v = new EjsView(object);
- return this.template.process.call(v, object, v);
- },
- out : function(){
- return this.template.out;
- },
- set_options : function(options){
- this.type = options.type != null ? options.type : EJS.type;
- this.cache = options.cache != null ? options.cache : EJS.cache;
- this.text = options.text != null ? options.text : null;
- this.name = options.name != null ? options.name : null;
- },
- // called without options, returns a function that takes the object
- // called with options being a string, uses that as a url
- // called with options as an object
- update : function(element, options){
- if(typeof element == 'string'){
- element = document.getElementById(element);
- }
- if(options == null){
- _template = this;
- return function(object){
- EJS.prototype.update.call(_template, element, object);
- };
- }
- if(typeof options == 'string'){
- params = {};
- params.url = options;
- _template = this;
- params.onComplete = function(request){
- var object = eval( request.responseText );
- EJS.prototype.update.call(_template, element, object);
- };
- EJS.ajax_request(params);
- }else
- {
- element.innerHTML = this.render(options);
- }
- }
-};
-
- EJS.newRequest = function(){
- var factories = [function() { return new ActiveXObject("Msxml2.XMLHTTP"); },function() { return new XMLHttpRequest(); },function() { return new ActiveXObject("Microsoft.XMLHTTP"); }];
- for(var i = 0; i < factories.length; i++) {
- try {
- var request = factories[i]();
- if (request != null) return request;
- }
- catch(e) { continue;}
- }
- };
-
- EJS.request = function(path){
- var request = new EJS.newRequest();
- request.open("GET", path, false);
-
- try{request.send(null);}
- catch(e){return null;}
-
- if ( request.status == 404 || request.status == 2 ||(request.status == 0 && request.responseText == '') ) return null;
-
- return request.responseText
- };
- EJS.ajax_request = function(params){
- params.method = ( params.method ? params.method : 'GET');
-
- var request = new EJS.newRequest();
- request.onreadystatechange = function(){
- if(request.readyState == 4){
- if(request.status == 200){
- params.onComplete(request);
- }else
- {
- params.onComplete(request);
- }
- }
- };
- request.open(params.method, params.url);
- request.send(null);
- };
-
-//}
-
-
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