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@ -1,610 +0,0 @@ |
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/*! |
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* mustache.js - Logic-less {{mustache}} templates with JavaScript |
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* http://github.com/janl/mustache.js
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*/ |
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/*global define: false*/ |
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(function (root, factory) { |
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if (typeof exports === "object" && exports) { |
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module.exports = factory; // CommonJS
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} else if (typeof define === "function" && define.amd) { |
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define(factory); // AMD
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} else { |
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root.Mustache = factory; // <script>
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} |
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}(this, (function () { |
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var exports = {}; |
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exports.name = "mustache.js"; |
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exports.version = "0.7.2"; |
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exports.tags = ["{{", "}}"]; |
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exports.Scanner = Scanner; |
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exports.Context = Context; |
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exports.Writer = Writer; |
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var whiteRe = /\s*/; |
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var spaceRe = /\s+/; |
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var nonSpaceRe = /\S/; |
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var eqRe = /\s*=/; |
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var curlyRe = /\s*\}/; |
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var tagRe = /#|\^|\/|>|\{|&|=|!/; |
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// Workaround for https://issues.apache.org/jira/browse/COUCHDB-577
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// See https://github.com/janl/mustache.js/issues/189
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function testRe(re, string) { |
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return RegExp.prototype.test.call(re, string); |
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} |
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function isWhitespace(string) { |
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return !testRe(nonSpaceRe, string); |
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} |
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var isArray = Array.isArray || function (obj) { |
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return Object.prototype.toString.call(obj) === "[object Array]"; |
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}; |
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function escapeRe(string) { |
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return string.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&"); |
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} |
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var entityMap = { |
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"&": "&", |
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"<": "<", |
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">": ">", |
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'"': '"', |
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"'": ''', |
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"/": '/' |
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}; |
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function escapeHtml(string) { |
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return String(string).replace(/[&<>"'\/]/g, function (s) { |
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return entityMap[s]; |
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}); |
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} |
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// Export the escaping function so that the user may override it.
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// See https://github.com/janl/mustache.js/issues/244
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exports.escape = escapeHtml; |
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function Scanner(string) { |
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this.string = string; |
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this.tail = string; |
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this.pos = 0; |
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} |
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/** |
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* Returns `true` if the tail is empty (end of string). |
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*/ |
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Scanner.prototype.eos = function () { |
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return this.tail === ""; |
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}; |
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/** |
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* Tries to match the given regular expression at the current position. |
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* Returns the matched text if it can match, the empty string otherwise. |
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*/ |
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Scanner.prototype.scan = function (re) { |
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var match = this.tail.match(re); |
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if (match && match.index === 0) { |
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this.tail = this.tail.substring(match[0].length); |
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this.pos += match[0].length; |
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return match[0]; |
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} |
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return ""; |
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}; |
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/** |
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* Skips all text until the given regular expression can be matched. Returns |
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* the skipped string, which is the entire tail if no match can be made. |
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*/ |
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Scanner.prototype.scanUntil = function (re) { |
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var match, pos = this.tail.search(re); |
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switch (pos) { |
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case -1: |
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match = this.tail; |
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this.pos += this.tail.length; |
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this.tail = ""; |
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break; |
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case 0: |
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match = ""; |
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break; |
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default: |
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match = this.tail.substring(0, pos); |
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this.tail = this.tail.substring(pos); |
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this.pos += pos; |
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} |
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return match; |
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}; |
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function Context(view, parent) { |
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this.view = view; |
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this.parent = parent; |
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this.clearCache(); |
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} |
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Context.make = function (view) { |
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return (view instanceof Context) ? view : new Context(view); |
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}; |
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Context.prototype.clearCache = function () { |
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this._cache = {}; |
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}; |
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Context.prototype.push = function (view) { |
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return new Context(view, this); |
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}; |
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Context.prototype.lookup = function (name) { |
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var value = this._cache[name]; |
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if (!value) { |
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if (name === ".") { |
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value = this.view; |
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} else { |
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var context = this; |
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while (context) { |
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if (name.indexOf(".") > 0) { |
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var names = name.split("."), i = 0; |
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value = context.view; |
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while (value && i < names.length) { |
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value = value[names[i++]]; |
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} |
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} else { |
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value = context.view[name]; |
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} |
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if (value != null) { |
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break; |
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} |
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context = context.parent; |
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} |
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} |
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this._cache[name] = value; |
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} |
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if (typeof value === "function") { |
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value = value.call(this.view); |
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} |
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return value; |
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}; |
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function Writer() { |
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this.clearCache(); |
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} |
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Writer.prototype.clearCache = function () { |
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this._cache = {}; |
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this._partialCache = {}; |
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}; |
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Writer.prototype.compile = function (template, tags) { |
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var fn = this._cache[template]; |
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if (!fn) { |
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var tokens = exports.parse(template, tags); |
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fn = this._cache[template] = this.compileTokens(tokens, template); |
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} |
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return fn; |
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}; |
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Writer.prototype.compilePartial = function (name, template, tags) { |
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var fn = this.compile(template, tags); |
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this._partialCache[name] = fn; |
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return fn; |
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}; |
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Writer.prototype.compileTokens = function (tokens, template) { |
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var fn = compileTokens(tokens); |
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var self = this; |
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return function (view, partials) { |
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if (partials) { |
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if (typeof partials === "function") { |
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self._loadPartial = partials; |
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} else { |
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for (var name in partials) { |
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self.compilePartial(name, partials[name]); |
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} |
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} |
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} |
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return fn(self, Context.make(view), template); |
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}; |
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}; |
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Writer.prototype.render = function (template, view, partials) { |
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return this.compile(template)(view, partials); |
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}; |
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Writer.prototype._section = function (name, context, text, callback) { |
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var value = context.lookup(name); |
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switch (typeof value) { |
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case "object": |
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if (isArray(value)) { |
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var buffer = ""; |
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for (var i = 0, len = value.length; i < len; ++i) { |
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buffer += callback(this, context.push(value[i])); |
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} |
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return buffer; |
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} |
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return value ? callback(this, context.push(value)) : ""; |
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case "function": |
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var self = this; |
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var scopedRender = function (template) { |
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return self.render(template, context); |
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}; |
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var result = value.call(context.view, text, scopedRender); |
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return result != null ? result : ""; |
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default: |
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if (value) { |
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return callback(this, context); |
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} |
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} |
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return ""; |
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}; |
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Writer.prototype._inverted = function (name, context, callback) { |
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var value = context.lookup(name); |
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// Use JavaScript's definition of falsy. Include empty arrays.
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// See https://github.com/janl/mustache.js/issues/186
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if (!value || (isArray(value) && value.length === 0)) { |
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return callback(this, context); |
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} |
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return ""; |
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}; |
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Writer.prototype._partial = function (name, context) { |
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if (!(name in this._partialCache) && this._loadPartial) { |
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this.compilePartial(name, this._loadPartial(name)); |
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} |
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var fn = this._partialCache[name]; |
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return fn ? fn(context) : ""; |
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}; |
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Writer.prototype._name = function (name, context) { |
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var value = context.lookup(name); |
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if (typeof value === "function") { |
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value = value.call(context.view); |
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} |
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return (value == null) ? "" : String(value); |
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}; |
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Writer.prototype._escaped = function (name, context) { |
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return exports.escape(this._name(name, context)); |
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}; |
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/** |
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* Low-level function that compiles the given `tokens` into a function |
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* that accepts three arguments: a Writer, a Context, and the template. |
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*/ |
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function compileTokens(tokens) { |
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var subRenders = {}; |
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function subRender(i, tokens, template) { |
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if (!subRenders[i]) { |
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var fn = compileTokens(tokens); |
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subRenders[i] = function (writer, context) { |
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return fn(writer, context, template); |
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}; |
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} |
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return subRenders[i]; |
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} |
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return function (writer, context, template) { |
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var buffer = ""; |
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var token, sectionText; |
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for (var i = 0, len = tokens.length; i < len; ++i) { |
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token = tokens[i]; |
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switch (token[0]) { |
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case "#": |
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sectionText = template.slice(token[3], token[5]); |
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buffer += writer._section(token[1], context, sectionText, subRender(i, token[4], template)); |
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break; |
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case "^": |
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buffer += writer._inverted(token[1], context, subRender(i, token[4], template)); |
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break; |
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case ">": |
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buffer += writer._partial(token[1], context); |
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break; |
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case "&": |
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buffer += writer._name(token[1], context); |
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break; |
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case "name": |
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buffer += writer._escaped(token[1], context); |
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break; |
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case "text": |
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buffer += token[1]; |
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break; |
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} |
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} |
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return buffer; |
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}; |
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} |
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/** |
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* Forms the given array of `tokens` into a nested tree structure where |
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* tokens that represent a section have two additional items: 1) an array of |
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* all tokens that appear in that section and 2) the index in the original |
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* template that represents the end of that section. |
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*/ |
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function nestTokens(tokens) { |
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var tree = []; |
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var collector = tree; |
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var sections = []; |
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var token; |
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for (var i = 0, len = tokens.length; i < len; ++i) { |
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token = tokens[i]; |
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switch (token[0]) { |
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case '#': |
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case '^': |
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sections.push(token); |
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collector.push(token); |
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collector = token[4] = []; |
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break; |
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case '/': |
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var section = sections.pop(); |
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section[5] = token[2]; |
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collector = sections.length > 0 ? sections[sections.length - 1][4] : tree; |
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break; |
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default: |
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collector.push(token); |
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} |
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} |
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return tree; |
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} |
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/** |
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* Combines the values of consecutive text tokens in the given `tokens` array |
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* to a single token. |
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*/ |
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function squashTokens(tokens) { |
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var squashedTokens = []; |
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var token, lastToken; |
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for (var i = 0, len = tokens.length; i < len; ++i) { |
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token = tokens[i]; |
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if (token[0] === 'text' && lastToken && lastToken[0] === 'text') { |
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lastToken[1] += token[1]; |
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lastToken[3] = token[3]; |
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} else { |
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lastToken = token; |
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squashedTokens.push(token); |
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} |
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} |
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return squashedTokens; |
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} |
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function escapeTags(tags) { |
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return [ |
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new RegExp(escapeRe(tags[0]) + "\\s*"), |
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new RegExp("\\s*" + escapeRe(tags[1])) |
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]; |
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} |
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/** |
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* Breaks up the given `template` string into a tree of token objects. If |
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* `tags` is given here it must be an array with two string values: the |
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* opening and closing tags used in the template (e.g. ["<%", "%>"]). Of |
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* course, the default is to use mustaches (i.e. Mustache.tags). |
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*/ |
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exports.parse = function (template, tags) { |
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template = template || ''; |
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tags = tags || exports.tags; |
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|
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if (typeof tags === 'string') tags = tags.split(spaceRe); |
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|
if (tags.length !== 2) { |
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throw new Error('Invalid tags: ' + tags.join(', ')); |
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} |
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var tagRes = escapeTags(tags); |
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var scanner = new Scanner(template); |
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var sections = []; // Stack to hold section tokens
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var tokens = []; // Buffer to hold the tokens
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var spaces = []; // Indices of whitespace tokens on the current line
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var hasTag = false; // Is there a {{tag}} on the current line?
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var nonSpace = false; // Is there a non-space char on the current line?
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// Strips all whitespace tokens array for the current line
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|
// if there was a {{#tag}} on it and otherwise only space.
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|
function stripSpace() { |
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|
|
if (hasTag && !nonSpace) { |
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|
|
while (spaces.length) { |
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|
tokens.splice(spaces.pop(), 1); |
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} |
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} else { |
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spaces = []; |
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} |
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hasTag = false; |
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nonSpace = false; |
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} |
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var start, type, value, chr; |
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while (!scanner.eos()) { |
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start = scanner.pos; |
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value = scanner.scanUntil(tagRes[0]); |
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if (value) { |
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for (var i = 0, len = value.length; i < len; ++i) { |
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chr = value.charAt(i); |
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if (isWhitespace(chr)) { |
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spaces.push(tokens.length); |
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} else { |
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nonSpace = true; |
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} |
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tokens.push(["text", chr, start, start + 1]); |
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start += 1; |
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|
|
|
if (chr === "\n") { |
|
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|
stripSpace(); // Check for whitespace on the current line.
|
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|
} |
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|
} |
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|
} |
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|
start = scanner.pos; |
|
|
|
|
|
|
|
// Match the opening tag.
|
|
|
|
if (!scanner.scan(tagRes[0])) { |
|
|
|
break; |
|
|
|
} |
|
|
|
|
|
|
|
hasTag = true; |
|
|
|
type = scanner.scan(tagRe) || "name"; |
|
|
|
|
|
|
|
// Skip any whitespace between tag and value.
|
|
|
|
scanner.scan(whiteRe); |
|
|
|
|
|
|
|
// Extract the tag value.
|
|
|
|
if (type === "=") { |
|
|
|
value = scanner.scanUntil(eqRe); |
|
|
|
scanner.scan(eqRe); |
|
|
|
scanner.scanUntil(tagRes[1]); |
|
|
|
} else if (type === "{") { |
|
|
|
var closeRe = new RegExp("\\s*" + escapeRe("}" + tags[1])); |
|
|
|
value = scanner.scanUntil(closeRe); |
|
|
|
scanner.scan(curlyRe); |
|
|
|
scanner.scanUntil(tagRes[1]); |
|
|
|
type = "&"; |
|
|
|
} else { |
|
|
|
value = scanner.scanUntil(tagRes[1]); |
|
|
|
} |
|
|
|
|
|
|
|
// Match the closing tag.
|
|
|
|
if (!scanner.scan(tagRes[1])) { |
|
|
|
throw new Error('Unclosed tag at ' + scanner.pos); |
|
|
|
} |
|
|
|
|
|
|
|
// Check section nesting.
|
|
|
|
if (type === '/') { |
|
|
|
if (sections.length === 0) { |
|
|
|
throw new Error('Unopened section "' + value + '" at ' + start); |
|
|
|
} |
|
|
|
|
|
|
|
var section = sections.pop(); |
|
|
|
|
|
|
|
if (section[1] !== value) { |
|
|
|
throw new Error('Unclosed section "' + section[1] + '" at ' + start); |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
var token = [type, value, start, scanner.pos]; |
|
|
|
tokens.push(token); |
|
|
|
|
|
|
|
if (type === '#' || type === '^') { |
|
|
|
sections.push(token); |
|
|
|
} else if (type === "name" || type === "{" || type === "&") { |
|
|
|
nonSpace = true; |
|
|
|
} else if (type === "=") { |
|
|
|
// Set the tags for the next time around.
|
|
|
|
tags = value.split(spaceRe); |
|
|
|
|
|
|
|
if (tags.length !== 2) { |
|
|
|
throw new Error('Invalid tags at ' + start + ': ' + tags.join(', ')); |
|
|
|
} |
|
|
|
|
|
|
|
tagRes = escapeTags(tags); |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
// Make sure there are no open sections when we're done.
|
|
|
|
var section = sections.pop(); |
|
|
|
if (section) { |
|
|
|
throw new Error('Unclosed section "' + section[1] + '" at ' + scanner.pos); |
|
|
|
} |
|
|
|
|
|
|
|
return nestTokens(squashTokens(tokens)); |
|
|
|
}; |
|
|
|
|
|
|
|
// The high-level clearCache, compile, compilePartial, and render functions
|
|
|
|
// use this default writer.
|
|
|
|
var _writer = new Writer(); |
|
|
|
|
|
|
|
/** |
|
|
|
* Clears all cached templates and partials in the default writer. |
|
|
|
*/ |
|
|
|
exports.clearCache = function () { |
|
|
|
return _writer.clearCache(); |
|
|
|
}; |
|
|
|
|
|
|
|
/** |
|
|
|
* Compiles the given `template` to a reusable function using the default |
|
|
|
* writer. |
|
|
|
*/ |
|
|
|
exports.compile = function (template, tags) { |
|
|
|
return _writer.compile(template, tags); |
|
|
|
}; |
|
|
|
|
|
|
|
/** |
|
|
|
* Compiles the partial with the given `name` and `template` to a reusable |
|
|
|
* function using the default writer. |
|
|
|
*/ |
|
|
|
exports.compilePartial = function (name, template, tags) { |
|
|
|
return _writer.compilePartial(name, template, tags); |
|
|
|
}; |
|
|
|
|
|
|
|
/** |
|
|
|
* Compiles the given array of tokens (the output of a parse) to a reusable |
|
|
|
* function using the default writer. |
|
|
|
*/ |
|
|
|
exports.compileTokens = function (tokens, template) { |
|
|
|
return _writer.compileTokens(tokens, template); |
|
|
|
}; |
|
|
|
|
|
|
|
/** |
|
|
|
* Renders the `template` with the given `view` and `partials` using the |
|
|
|
* default writer. |
|
|
|
*/ |
|
|
|
exports.render = function (template, view, partials) { |
|
|
|
return _writer.render(template, view, partials); |
|
|
|
}; |
|
|
|
|
|
|
|
// This is here for backwards compatibility with 0.4.x.
|
|
|
|
exports.to_html = function (template, view, partials, send) { |
|
|
|
var result = exports.render(template, view, partials); |
|
|
|
|
|
|
|
if (typeof send === "function") { |
|
|
|
send(result); |
|
|
|
} else { |
|
|
|
return result; |
|
|
|
} |
|
|
|
}; |
|
|
|
|
|
|
|
return exports; |
|
|
|
|
|
|
|
}()))); |
Steve Saldivar
12 years ago