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+/*!
+ * mustache.js - Logic-less {{mustache}} templates with JavaScript
+ * http://github.com/janl/mustache.js
+ */
+
+/*global define: false*/
+
+(function (root, factory) {
+ if (typeof exports === "object" && exports) {
+ factory(exports); // CommonJS
+ } else {
+ var mustache = {};
+ factory(mustache);
+ if (typeof define === "function" && define.amd) {
+ define(mustache); // AMD
+ } else {
+ root.Mustache = mustache; // <script>
+ }
+ }
+}(this, function (mustache) {
+
+ var whiteRe = /\s*/;
+ var spaceRe = /\s+/;
+ var nonSpaceRe = /\S/;
+ var eqRe = /\s*=/;
+ var curlyRe = /\s*\}/;
+ var tagRe = /#|\^|\/|>|\{|&|=|!/;
+
+ // Workaround for https://issues.apache.org/jira/browse/COUCHDB-577
+ // See https://github.com/janl/mustache.js/issues/189
+ var RegExp_test = RegExp.prototype.test;
+ function testRegExp(re, string) {
+ return RegExp_test.call(re, string);
+ }
+
+ function isWhitespace(string) {
+ return !testRegExp(nonSpaceRe, string);
+ }
+
+ var Object_toString = Object.prototype.toString;
+ var isArray = Array.isArray || function (obj) {
+ return Object_toString.call(obj) === '[object Array]';
+ };
+
+ function escapeRegExp(string) {
+ return string.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
+ }
+
+ var entityMap = {
+ "&": "&amp;",
+ "<": "&lt;",
+ ">": "&gt;",
+ '"': '&quot;',
+ "'": '&#39;',
+ "/": '&#x2F;'
+ };
+
+ function escapeHtml(string) {
+ return String(string).replace(/[&<>"'\/]/g, function (s) {
+ return entityMap[s];
+ });
+ }
+
+ function Scanner(string) {
+ this.string = string;
+ this.tail = string;
+ this.pos = 0;
+ }
+
+ /**
+ * Returns `true` if the tail is empty (end of string).
+ */
+ Scanner.prototype.eos = function () {
+ return this.tail === "";
+ };
+
+ /**
+ * Tries to match the given regular expression at the current position.
+ * Returns the matched text if it can match, the empty string otherwise.
+ */
+ Scanner.prototype.scan = function (re) {
+ var match = this.tail.match(re);
+
+ if (match && match.index === 0) {
+ this.tail = this.tail.substring(match[0].length);
+ this.pos += match[0].length;
+ return match[0];
+ }
+
+ return "";
+ };
+
+ /**
+ * Skips all text until the given regular expression can be matched. Returns
+ * the skipped string, which is the entire tail if no match can be made.
+ */
+ Scanner.prototype.scanUntil = function (re) {
+ var match, pos = this.tail.search(re);
+
+ switch (pos) {
+ case -1:
+ match = this.tail;
+ this.pos += this.tail.length;
+ this.tail = "";
+ break;
+ case 0:
+ match = "";
+ break;
+ default:
+ match = this.tail.substring(0, pos);
+ this.tail = this.tail.substring(pos);
+ this.pos += pos;
+ }
+
+ return match;
+ };
+
+ function Context(view, parent) {
+ this.view = view || {};
+ this.parent = parent;
+ this._cache = {};
+ }
+
+ Context.make = function (view) {
+ return (view instanceof Context) ? view : new Context(view);
+ };
+
+ Context.prototype.push = function (view) {
+ return new Context(view, this);
+ };
+
+ Context.prototype.lookup = function (name) {
+ var value = this._cache[name];
+
+ if (!value) {
+ if (name == '.') {
+ value = this.view;
+ } else {
+ var context = this;
+
+ while (context) {
+ if (name.indexOf('.') > 0) {
+ value = context.view;
+ var names = name.split('.'), i = 0;
+ while (value && i < names.length) {
+ value = value[names[i++]];
+ }
+ } else {
+ value = context.view[name];
+ }
+
+ if (value != null) break;
+
+ context = context.parent;
+ }
+ }
+
+ this._cache[name] = value;
+ }
+
+ if (typeof value === 'function') value = value.call(this.view);
+
+ return value;
+ };
+
+ function Writer() {
+ this.clearCache();
+ }
+
+ Writer.prototype.clearCache = function () {
+ this._cache = {};
+ this._partialCache = {};
+ };
+
+ Writer.prototype.compile = function (template, tags) {
+ var fn = this._cache[template];
+
+ if (!fn) {
+ var tokens = mustache.parse(template, tags);
+ fn = this._cache[template] = this.compileTokens(tokens, template);
+ }
+
+ return fn;
+ };
+
+ Writer.prototype.compilePartial = function (name, template, tags) {
+ var fn = this.compile(template, tags);
+ this._partialCache[name] = fn;
+ return fn;
+ };
+
+ Writer.prototype.getPartial = function (name) {
+ if (!(name in this._partialCache) && this._loadPartial) {
+ this.compilePartial(name, this._loadPartial(name));
+ }
+
+ return this._partialCache[name];
+ };
+
+ Writer.prototype.compileTokens = function (tokens, template) {
+ var self = this;
+ return function (view, partials) {
+ if (partials) {
+ if (typeof partials === 'function') {
+ self._loadPartial = partials;
+ } else {
+ for (var name in partials) {
+ self.compilePartial(name, partials[name]);
+ }
+ }
+ }
+
+ return renderTokens(tokens, self, Context.make(view), template);
+ };
+ };
+
+ Writer.prototype.render = function (template, view, partials) {
+ return this.compile(template)(view, partials);
+ };
+
+ /**
+ * Low-level function that renders the given `tokens` using the given `writer`
+ * and `context`. The `template` string is only needed for templates that use
+ * higher-order sections to extract the portion of the original template that
+ * was contained in that section.
+ */
+ function renderTokens(tokens, writer, context, template) {
+ var buffer = '';
+
+ var token, tokenValue, value;
+ for (var i = 0, len = tokens.length; i < len; ++i) {
+ token = tokens[i];
+ tokenValue = token[1];
+
+ switch (token[0]) {
+ case '#':
+ value = context.lookup(tokenValue);
+
+ if (typeof value === 'object') {
+ if (isArray(value)) {
+ for (var j = 0, jlen = value.length; j < jlen; ++j) {
+ buffer += renderTokens(token[4], writer, context.push(value[j]), template);
+ }
+ } else if (value) {
+ buffer += renderTokens(token[4], writer, context.push(value), template);
+ }
+ } else if (typeof value === 'function') {
+ var text = template == null ? null : template.slice(token[3], token[5]);
+ value = value.call(context.view, text, function (template) {
+ return writer.render(template, context);
+ });
+ if (value != null) buffer += value;
+ } else if (value) {
+ buffer += renderTokens(token[4], writer, context, template);
+ }
+
+ break;
+ case '^':
+ value = context.lookup(tokenValue);
+
+ // Use JavaScript's definition of falsy. Include empty arrays.
+ // See https://github.com/janl/mustache.js/issues/186
+ if (!value || (isArray(value) && value.length === 0)) {
+ buffer += renderTokens(token[4], writer, context, template);
+ }
+
+ break;
+ case '>':
+ value = writer.getPartial(tokenValue);
+ if (typeof value === 'function') buffer += value(context);
+ break;
+ case '&':
+ value = context.lookup(tokenValue);
+ if (value != null) buffer += value;
+ break;
+ case 'name':
+ value = context.lookup(tokenValue);
+ if (value != null) buffer += mustache.escape(value);
+ break;
+ case 'text':
+ buffer += tokenValue;
+ break;
+ }
+ }
+
+ return buffer;
+ }
+
+ /**
+ * Forms the given array of `tokens` into a nested tree structure where
+ * tokens that represent a section have two additional items: 1) an array of
+ * all tokens that appear in that section and 2) the index in the original
+ * template that represents the end of that section.
+ */
+ function nestTokens(tokens) {
+ var tree = [];
+ var collector = tree;
+ var sections = [];
+
+ var token;
+ for (var i = 0, len = tokens.length; i < len; ++i) {
+ token = tokens[i];
+ switch (token[0]) {
+ case '#':
+ case '^':
+ sections.push(token);
+ collector.push(token);
+ collector = token[4] = [];
+ break;
+ case '/':
+ var section = sections.pop();
+ section[5] = token[2];
+ collector = sections.length > 0 ? sections[sections.length - 1][4] : tree;
+ break;
+ default:
+ collector.push(token);
+ }
+ }
+
+ return tree;
+ }
+
+ /**
+ * Combines the values of consecutive text tokens in the given `tokens` array
+ * to a single token.
+ */
+ function squashTokens(tokens) {
+ var squashedTokens = [];
+
+ var token, lastToken;
+ for (var i = 0, len = tokens.length; i < len; ++i) {
+ token = tokens[i];
+ if (token) {
+ if (token[0] === 'text' && lastToken && lastToken[0] === 'text') {
+ lastToken[1] += token[1];
+ lastToken[3] = token[3];
+ } else {
+ lastToken = token;
+ squashedTokens.push(token);
+ }
+ }
+ }
+
+ return squashedTokens;
+ }
+
+ function escapeTags(tags) {
+ return [
+ new RegExp(escapeRegExp(tags[0]) + "\\s*"),
+ new RegExp("\\s*" + escapeRegExp(tags[1]))
+ ];
+ }
+
+ /**
+ * Breaks up the given `template` string into a tree of token objects. If
+ * `tags` is given here it must be an array with two string values: the
+ * opening and closing tags used in the template (e.g. ["<%", "%>"]). Of
+ * course, the default is to use mustaches (i.e. Mustache.tags).
+ */
+ function parseTemplate(template, tags) {
+ template = template || '';
+ tags = tags || mustache.tags;
+
+ if (typeof tags === 'string') tags = tags.split(spaceRe);
+ if (tags.length !== 2) throw new Error('Invalid tags: ' + tags.join(', '));
+
+ var tagRes = escapeTags(tags);
+ var scanner = new Scanner(template);
+
+ var sections = []; // Stack to hold section tokens
+ var tokens = []; // Buffer to hold the tokens
+ var spaces = []; // Indices of whitespace tokens on the current line
+ var hasTag = false; // Is there a {{tag}} on the current line?
+ var nonSpace = false; // Is there a non-space char on the current line?
+
+ // Strips all whitespace tokens array for the current line
+ // if there was a {{#tag}} on it and otherwise only space.
+ function stripSpace() {
+ if (hasTag && !nonSpace) {
+ while (spaces.length) {
+ delete tokens[spaces.pop()];
+ }
+ } else {
+ spaces = [];
+ }
+
+ hasTag = false;
+ nonSpace = false;
+ }
+
+ var start, type, value, chr, token;
+ while (!scanner.eos()) {
+ start = scanner.pos;
+
+ // Match any text between tags.
+ value = scanner.scanUntil(tagRes[0]);
+ if (value) {
+ for (var i = 0, len = value.length; i < len; ++i) {
+ chr = value.charAt(i);
+
+ if (isWhitespace(chr)) {
+ spaces.push(tokens.length);
+ } else {
+ nonSpace = true;
+ }
+
+ tokens.push(['text', chr, start, start + 1]);
+ start += 1;
+
+ // Check for whitespace on the current line.
+ if (chr == '\n') stripSpace();
+ }
+ }
+
+ // Match the opening tag.
+ if (!scanner.scan(tagRes[0])) break;
+ hasTag = true;
+
+ // Get the tag type.
+ type = scanner.scan(tagRe) || 'name';
+ scanner.scan(whiteRe);
+
+ // Get the tag value.
+ if (type === '=') {
+ value = scanner.scanUntil(eqRe);
+ scanner.scan(eqRe);
+ scanner.scanUntil(tagRes[1]);
+ } else if (type === '{') {
+ value = scanner.scanUntil(new RegExp('\\s*' + escapeRegExp('}' + tags[1])));
+ 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);
+
+ token = [type, value, start, scanner.pos];
+ tokens.push(token);
+
+ if (type === '#' || type === '^') {
+ sections.push(token);
+ } else if (type === '/') {
+ // Check section nesting.
+ if (sections.length === 0) throw new Error('Unopened section "' + value + '" at ' + start);
+ var openSection = sections.pop();
+ if (openSection[1] !== value) throw new Error('Unclosed section "' + openSection[1] + '" at ' + start);
+ } 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 openSection = sections.pop();
+ if (openSection) throw new Error('Unclosed section "' + openSection[1] + '" at ' + scanner.pos);
+
+ tokens = squashTokens(tokens);
+
+ return nestTokens(tokens);
+ }
+
+ mustache.name = "mustache.js";
+ mustache.version = "0.7.2";
+ mustache.tags = ["{{", "}}"];
+
+ mustache.Scanner = Scanner;
+ mustache.Context = Context;
+ mustache.Writer = Writer;
+
+ mustache.parse = parseTemplate;
+
+ // Export the escaping function so that the user may override it.
+ // See https://github.com/janl/mustache.js/issues/244
+ mustache.escape = escapeHtml;
+
+ // All Mustache.* functions use this writer.
+ var defaultWriter = new Writer();
+
+ /**
+ * Clears all cached templates and partials in the default writer.
+ */
+ mustache.clearCache = function () {
+ return defaultWriter.clearCache();
+ };
+
+ /**
+ * Compiles the given `template` to a reusable function using the default
+ * writer.
+ */
+ mustache.compile = function (template, tags) {
+ return defaultWriter.compile(template, tags);
+ };
+
+ /**
+ * Compiles the partial with the given `name` and `template` to a reusable
+ * function using the default writer.
+ */
+ mustache.compilePartial = function (name, template, tags) {
+ return defaultWriter.compilePartial(name, template, tags);
+ };
+
+ /**
+ * Compiles the given array of tokens (the output of a parse) to a reusable
+ * function using the default writer.
+ */
+ mustache.compileTokens = function (tokens, template) {
+ return defaultWriter.compileTokens(tokens, template);
+ };
+
+ /**
+ * Renders the `template` with the given `view` and `partials` using the
+ * default writer.
+ */
+ mustache.render = function (template, view, partials) {
+ return defaultWriter.render(template, view, partials);
+ };
+
+ // This is here for backwards compatibility with 0.4.x.
+ mustache.to_html = function (template, view, partials, send) {
+ var result = mustache.render(template, view, partials);
+
+ if (typeof send === "function") {
+ send(result);
+ } else {
+ return result;
+ }
+ };
+
+}));
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