diff -r dd1686ae5506 -r 89968844eb7d tweetcast/twisted/client/lib/mustache/mustache.js --- a/tweetcast/twisted/client/lib/mustache/mustache.js Wed Nov 30 12:11:59 2011 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,396 +0,0 @@ -/* - mustache.js — Logic-less templates in JavaScript - - See http://mustache.github.com/ for more info. -*/ - -var Mustache = function() { - var regexCache = {}; - var Renderer = function() {}; - - Renderer.prototype = { - otag: "{{", - ctag: "}}", - pragmas: {}, - buffer: [], - pragmas_implemented: { - "IMPLICIT-ITERATOR": true - }, - context: {}, - - render: function(template, context, partials, in_recursion) { - // reset buffer & set context - if(!in_recursion) { - this.context = context; - this.buffer = []; // TODO: make this non-lazy - } - - // fail fast - if(!this.includes("", template)) { - if(in_recursion) { - return template; - } else { - this.send(template); - return; - } - } - - // get the pragmas together - template = this.render_pragmas(template); - - // render the template - var html = this.render_section(template, context, partials); - - // render_section did not find any sections, we still need to render the tags - if (html === false) { - html = this.render_tags(template, context, partials, in_recursion); - } - - if (in_recursion) { - return html; - } else { - this.sendLines(html); - } - }, - - /* - Sends parsed lines - */ - send: function(line) { - if(line !== "") { - this.buffer.push(line); - } - }, - - sendLines: function(text) { - if (text) { - var lines = text.split("\n"); - for (var i = 0; i < lines.length; i++) { - this.send(lines[i]); - } - } - }, - - /* - Looks for %PRAGMAS - */ - render_pragmas: function(template) { - // no pragmas - if(!this.includes("%", template)) { - return template; - } - - var that = this; - var regex = this.getCachedRegex("render_pragmas", function(otag, ctag) { - return new RegExp(otag + "%([\\w-]+) ?([\\w]+=[\\w]+)?" + ctag, "g"); - }); - - return template.replace(regex, function(match, pragma, options) { - if(!that.pragmas_implemented[pragma]) { - throw({message: - "This implementation of mustache doesn't understand the '" + - pragma + "' pragma"}); - } - that.pragmas[pragma] = {}; - if(options) { - var opts = options.split("="); - that.pragmas[pragma][opts[0]] = opts[1]; - } - return ""; - // ignore unknown pragmas silently - }); - }, - - /* - Tries to find a partial in the curent scope and render it - */ - render_partial: function(name, context, partials) { - name = this.trim(name); - if(!partials || partials[name] === undefined) { - throw({message: "unknown_partial '" + name + "'"}); - } - if(typeof(context[name]) != "object") { - return this.render(partials[name], context, partials, true); - } - return this.render(partials[name], context[name], partials, true); - }, - - /* - Renders inverted (^) and normal (#) sections - */ - render_section: function(template, context, partials) { - if(!this.includes("#", template) && !this.includes("^", template)) { - // did not render anything, there were no sections - return false; - } - - var that = this; - - var regex = this.getCachedRegex("render_section", function(otag, ctag) { - // This regex matches _the first_ section ({{#foo}}{{/foo}}), and captures the remainder - return new RegExp( - "^([\\s\\S]*?)" + // all the crap at the beginning that is not {{*}} ($1) - - otag + // {{ - "(\\^|\\#)\\s*(.+)\\s*" + // #foo (# == $2, foo == $3) - ctag + // }} - - "\n*([\\s\\S]*?)" + // between the tag ($2). leading newlines are dropped - - otag + // {{ - "\\/\\s*\\3\\s*" + // /foo (backreference to the opening tag). - ctag + // }} - - "\\s*([\\s\\S]*)$", // everything else in the string ($4). leading whitespace is dropped. - - "g"); - }); - - - // for each {{#foo}}{{/foo}} section do... - return template.replace(regex, function(match, before, type, name, content, after) { - // before contains only tags, no sections - var renderedBefore = before ? that.render_tags(before, context, partials, true) : "", - - // after may contain both sections and tags, so use full rendering function - renderedAfter = after ? that.render(after, context, partials, true) : "", - - // will be computed below - renderedContent, - - value = that.find(name, context); - - if (type === "^") { // inverted section - if (!value || that.is_array(value) && value.length === 0) { - // false or empty list, render it - renderedContent = that.render(content, context, partials, true); - } else { - renderedContent = ""; - } - } else if (type === "#") { // normal section - if (that.is_array(value)) { // Enumerable, Let's loop! - renderedContent = that.map(value, function(row) { - return that.render(content, that.create_context(row), partials, true); - }).join(""); - } else if (that.is_object(value)) { // Object, Use it as subcontext! - renderedContent = that.render(content, that.create_context(value), - partials, true); - } else if (typeof value === "function") { - // higher order section - renderedContent = value.call(context, content, function(text) { - return that.render(text, context, partials, true); - }); - } else if (value) { // boolean section - renderedContent = that.render(content, context, partials, true); - } else { - renderedContent = ""; - } - } - - return renderedBefore + renderedContent + renderedAfter; - }); - }, - - /* - Replace {{foo}} and friends with values from our view - */ - render_tags: function(template, context, partials, in_recursion) { - // tit for tat - var that = this; - - - - var new_regex = function() { - return that.getCachedRegex("render_tags", function(otag, ctag) { - return new RegExp(otag + "(=|!|>|\\{|%)?([^\\/#\\^]+?)\\1?" + ctag + "+", "g"); - }); - }; - - var regex = new_regex(); - var tag_replace_callback = function(match, operator, name) { - switch(operator) { - case "!": // ignore comments - return ""; - case "=": // set new delimiters, rebuild the replace regexp - that.set_delimiters(name); - regex = new_regex(); - return ""; - case ">": // render partial - return that.render_partial(name, context, partials); - case "{": // the triple mustache is unescaped - return that.find(name, context); - default: // escape the value - return that.escape(that.find(name, context)); - } - }; - var lines = template.split("\n"); - for(var i = 0; i < lines.length; i++) { - lines[i] = lines[i].replace(regex, tag_replace_callback, this); - if(!in_recursion) { - this.send(lines[i]); - } - } - - if(in_recursion) { - return lines.join("\n"); - } - }, - - set_delimiters: function(delimiters) { - var dels = delimiters.split(" "); - this.otag = this.escape_regex(dels[0]); - this.ctag = this.escape_regex(dels[1]); - }, - - escape_regex: function(text) { - // thank you Simon Willison - if(!arguments.callee.sRE) { - var specials = [ - '/', '.', '*', '+', '?', '|', - '(', ')', '[', ']', '{', '}', '\\' - ]; - arguments.callee.sRE = new RegExp( - '(\\' + specials.join('|\\') + ')', 'g' - ); - } - return text.replace(arguments.callee.sRE, '\\$1'); - }, - - /* - find `name` in current `context`. That is find me a value - from the view object - */ - find: function(name, context) { - name = this.trim(name); - - // Checks whether a value is thruthy or false or 0 - function is_kinda_truthy(bool) { - return bool === false || bool === 0 || bool; - } - - var value; - if(is_kinda_truthy(context[name])) { - value = context[name]; - } else if(is_kinda_truthy(this.context[name])) { - value = this.context[name]; - } - - if(typeof value === "function") { - return value.apply(context); - } - if(value !== undefined) { - return value; - } - // silently ignore unkown variables - return ""; - }, - - // Utility methods - - /* includes tag */ - includes: function(needle, haystack) { - return haystack.indexOf(this.otag + needle) != -1; - }, - - /* - Does away with nasty characters - */ - escape: function(s) { - s = String(s === null ? "" : s); - return s.replace(/&(?!\w+;)|["'<>\\]/g, function(s) { - switch(s) { - case "&": return "&"; - case '"': return '"'; - case "'": return '''; - case "<": return "<"; - case ">": return ">"; - default: return s; - } - }); - }, - - // by @langalex, support for arrays of strings - create_context: function(_context) { - if(this.is_object(_context)) { - return _context; - } else { - var iterator = "."; - if(this.pragmas["IMPLICIT-ITERATOR"]) { - iterator = this.pragmas["IMPLICIT-ITERATOR"].iterator; - } - var ctx = {}; - ctx[iterator] = _context; - return ctx; - } - }, - - is_object: function(a) { - return a && typeof a == "object"; - }, - - is_array: function(a) { - return Object.prototype.toString.call(a) === '[object Array]'; - }, - - /* - Gets rid of leading and trailing whitespace - */ - trim: function(s) { - return s.replace(/^\s*|\s*$/g, ""); - }, - - /* - Why, why, why? Because IE. Cry, cry cry. - */ - map: function(array, fn) { - if (typeof array.map == "function") { - return array.map(fn); - } else { - var r = []; - var l = array.length; - for(var i = 0; i < l; i++) { - r.push(fn(array[i])); - } - return r; - } - }, - - getCachedRegex: function(name, generator) { - var byOtag = regexCache[this.otag]; - if (!byOtag) { - byOtag = regexCache[this.otag] = {}; - } - - var byCtag = byOtag[this.ctag]; - if (!byCtag) { - byCtag = byOtag[this.ctag] = {}; - } - - var regex = byCtag[name]; - if (!regex) { - regex = byCtag[name] = generator(this.otag, this.ctag); - } - - return regex; - } - }; - - return({ - name: "mustache.js", - version: "0.4.0-dev", - - /* - Turns a template and view into HTML - */ - to_html: function(template, view, partials, send_fun) { - var renderer = new Renderer(); - if(send_fun) { - renderer.send = send_fun; - } - renderer.render(template, view || {}, partials); - if(!send_fun) { - return renderer.buffer.join("\n"); - } - } - }); -}();