--- /dev/null
+/*!
+ * mustache.js - Logic-less {{mustache}} templates with JavaScript
+ * http://github.com/janl/mustache.js
+ */
+
+/*global define: false*/
+
+(function (global, factory) {
+ if (typeof exports === "object" && exports) {
+ factory(exports); // CommonJS
+ } else if (typeof define === "function" && define.amd) {
+ define(['exports'], factory); // AMD
+ } else {
+ factory(global.Mustache = {}); // <script>
+ }
+}(this, function (mustache) {
+
+ var Object_toString = Object.prototype.toString;
+ var isArray = Array.isArray || function (object) {
+ return Object_toString.call(object) === '[object Array]';
+ };
+
+ function isFunction(object) {
+ return typeof object === 'function';
+ }
+
+ function escapeRegExp(string) {
+ return string.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
+ }
+
+ // 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);
+ }
+
+ var nonSpaceRe = /\S/;
+ function isWhitespace(string) {
+ return !testRegExp(nonSpaceRe, string);
+ }
+
+ var entityMap = {
+ "&": "&",
+ "<": "<",
+ ">": ">",
+ '"': '"',
+ "'": ''',
+ "/": '/'
+ };
+
+ function escapeHtml(string) {
+ return String(string).replace(/[&<>"'\/]/g, function (s) {
+ return entityMap[s];
+ });
+ }
+
+ var whiteRe = /\s*/;
+ var spaceRe = /\s+/;
+ var equalsRe = /\s*=/;
+ var curlyRe = /\s*\}/;
+ var tagRe = /#|\^|\/|>|\{|&|=|!/;
+
+ /**
+ * Breaks up the given `template` string into a tree of tokens. If the `tags`
+ * argument 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).
+ *
+ * A token is an array with at least 4 elements. The first element is the
+ * mustache symbol that was used inside the tag, e.g. "#" or "&". If the tag
+ * did not contain a symbol (i.e. {{myValue}}) this element is "name". For
+ * all text that appears outside a symbol this element is "text".
+ *
+ * The second element of a token is its "value". For mustache tags this is
+ * whatever else was inside the tag besides the opening symbol. For text tokens
+ * this is the text itself.
+ *
+ * The third and fourth elements of the token are the start and end indices,
+ * respectively, of the token in the original template.
+ *
+ * Tokens that are the root node of a subtree contain two more elements: 1) an
+ * array of tokens in the subtree and 2) the index in the original template at
+ * which the closing tag for that section begins.
+ */
+ function parseTemplate(template, tags) {
+ if (!template)
+ return [];
+
+ 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 openingTagRe, closingTagRe, closingCurlyRe;
+ function compileTags(tags) {
+ if (typeof tags === 'string')
+ tags = tags.split(spaceRe, 2);
+
+ if (!isArray(tags) || tags.length !== 2)
+ throw new Error('Invalid tags: ' + tags);
+
+ openingTagRe = new RegExp(escapeRegExp(tags[0]) + '\\s*');
+ closingTagRe = new RegExp('\\s*' + escapeRegExp(tags[1]));
+ closingCurlyRe = new RegExp('\\s*' + escapeRegExp('}' + tags[1]));
+ }
+
+ compileTags(tags || mustache.tags);
+
+ var scanner = new Scanner(template);
+
+ var start, type, value, chr, token, openSection;
+ while (!scanner.eos()) {
+ start = scanner.pos;
+
+ // Match any text between tags.
+ value = scanner.scanUntil(openingTagRe);
+
+ if (value) {
+ for (var i = 0, valueLength = value.length; i < valueLength; ++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(openingTagRe))
+ break;
+
+ hasTag = true;
+
+ // Get the tag type.
+ type = scanner.scan(tagRe) || 'name';
+ scanner.scan(whiteRe);
+
+ // Get the tag value.
+ if (type === '=') {
+ value = scanner.scanUntil(equalsRe);
+ scanner.scan(equalsRe);
+ scanner.scanUntil(closingTagRe);
+ } else if (type === '{') {
+ value = scanner.scanUntil(closingCurlyRe);
+ scanner.scan(curlyRe);
+ scanner.scanUntil(closingTagRe);
+ type = '&';
+ } else {
+ value = scanner.scanUntil(closingTagRe);
+ }
+
+ // Match the closing tag.
+ if (!scanner.scan(closingTagRe))
+ 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.
+ openSection = sections.pop();
+
+ if (!openSection)
+ throw new Error('Unopened section "' + value + '" at ' + start);
+
+ 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.
+ compileTags(value);
+ }
+ }
+
+ // Make sure there are no open sections when we're done.
+ openSection = sections.pop();
+
+ if (openSection)
+ throw new Error('Unclosed section "' + openSection[1] + '" at ' + scanner.pos);
+
+ return nestTokens(squashTokens(tokens));
+ }
+
+ /**
+ * 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, numTokens = tokens.length; i < numTokens; ++i) {
+ token = tokens[i];
+
+ if (token) {
+ if (token[0] === 'text' && lastToken && lastToken[0] === 'text') {
+ lastToken[1] += token[1];
+ lastToken[3] = token[3];
+ } else {
+ squashedTokens.push(token);
+ lastToken = token;
+ }
+ }
+ }
+
+ return squashedTokens;
+ }
+
+ /**
+ * 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 nestedTokens = [];
+ var collector = nestedTokens;
+ var sections = [];
+
+ var token, section;
+ for (var i = 0, numTokens = tokens.length; i < numTokens; ++i) {
+ token = tokens[i];
+
+ switch (token[0]) {
+ case '#':
+ case '^':
+ collector.push(token);
+ sections.push(token);
+ collector = token[4] = [];
+ break;
+ case '/':
+ section = sections.pop();
+ section[5] = token[2];
+ collector = sections.length > 0 ? sections[sections.length - 1][4] : nestedTokens;
+ break;
+ default:
+ collector.push(token);
+ }
+ }
+
+ return nestedTokens;
+ }
+
+ /**
+ * A simple string scanner that is used by the template parser to find
+ * tokens in template strings.
+ */
+ 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)
+ return '';
+
+ var string = match[0];
+
+ this.tail = this.tail.substring(string.length);
+ this.pos += string.length;
+
+ return string;
+ };
+
+ /**
+ * 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 index = this.tail.search(re), match;
+
+ switch (index) {
+ case -1:
+ match = this.tail;
+ this.tail = "";
+ break;
+ case 0:
+ match = "";
+ break;
+ default:
+ match = this.tail.substring(0, index);
+ this.tail = this.tail.substring(index);
+ }
+
+ this.pos += match.length;
+
+ return match;
+ };
+
+ /**
+ * Represents a rendering context by wrapping a view object and
+ * maintaining a reference to the parent context.
+ */
+ function Context(view, parentContext) {
+ this.view = view == null ? {} : view;
+ this.cache = { '.': this.view };
+ this.parent = parentContext;
+ }
+
+ /**
+ * Creates a new context using the given view with this context
+ * as the parent.
+ */
+ Context.prototype.push = function (view) {
+ return new Context(view, this);
+ };
+
+ /**
+ * Returns the value of the given name in this context, traversing
+ * up the context hierarchy if the value is absent in this context's view.
+ */
+ Context.prototype.lookup = function (name) {
+ var cache = this.cache;
+
+ var value;
+ if (name in cache) {
+ value = cache[name];
+ } else {
+ var context = this, names, index;
+
+ while (context) {
+ if (name.indexOf('.') > 0) {
+ value = context.view;
+ names = name.split('.');
+ index = 0;
+
+ while (value != null && index < names.length)
+ value = value[names[index++]];
+ } else if (typeof context.view == 'object') {
+ value = context.view[name];
+ }
+
+ if (value != null)
+ break;
+
+ context = context.parent;
+ }
+
+ cache[name] = value;
+ }
+
+ if (isFunction(value))
+ value = value.call(this.view);
+
+ return value;
+ };
+
+ /**
+ * A Writer knows how to take a stream of tokens and render them to a
+ * string, given a context. It also maintains a cache of templates to
+ * avoid the need to parse the same template twice.
+ */
+ function Writer() {
+ this.cache = {};
+ }
+
+ /**
+ * Clears all cached templates in this writer.
+ */
+ Writer.prototype.clearCache = function () {
+ this.cache = {};
+ };
+
+ /**
+ * Parses and caches the given `template` and returns the array of tokens
+ * that is generated from the parse.
+ */
+ Writer.prototype.parse = function (template, tags) {
+ var cache = this.cache;
+ var tokens = cache[template];
+
+ if (tokens == null)
+ tokens = cache[template] = parseTemplate(template, tags);
+
+ return tokens;
+ };
+
+ /**
+ * High-level method that is used to render the given `template` with
+ * the given `view`.
+ *
+ * The optional `partials` argument may be an object that contains the
+ * names and templates of partials that are used in the template. It may
+ * also be a function that is used to load partial templates on the fly
+ * that takes a single argument: the name of the partial.
+ */
+ Writer.prototype.render = function (template, view, partials) {
+ var tokens = this.parse(template);
+ var context = (view instanceof Context) ? view : new Context(view);
+ return this.renderTokens(tokens, context, partials, template);
+ };
+
+ /**
+ * Low-level method that renders the given array of `tokens` using
+ * the given `context` and `partials`.
+ *
+ * Note: The `originalTemplate` is only ever used to extract the portion
+ * of the original template that was contained in a higher-order section.
+ * If the template doesn't use higher-order sections, this argument may
+ * be omitted.
+ */
+ Writer.prototype.renderTokens = function (tokens, context, partials, originalTemplate) {
+ var buffer = '';
+
+ // This function is used to render an arbitrary template
+ // in the current context by higher-order sections.
+ var self = this;
+ function subRender(template) {
+ return self.render(template, context, partials);
+ }
+
+ var token, value;
+ for (var i = 0, numTokens = tokens.length; i < numTokens; ++i) {
+ token = tokens[i];
+
+ switch (token[0]) {
+ case '#':
+ value = context.lookup(token[1]);
+
+ if (!value)
+ continue;
+
+ if (isArray(value)) {
+ for (var j = 0, valueLength = value.length; j < valueLength; ++j) {
+ buffer += this.renderTokens(token[4], context.push(value[j]), partials, originalTemplate);
+ }
+ } else if (typeof value === 'object' || typeof value === 'string') {
+ buffer += this.renderTokens(token[4], context.push(value), partials, originalTemplate);
+ } else if (isFunction(value)) {
+ if (typeof originalTemplate !== 'string')
+ throw new Error('Cannot use higher-order sections without the original template');
+
+ // Extract the portion of the original template that the section contains.
+ value = value.call(context.view, originalTemplate.slice(token[3], token[5]), subRender);
+
+ if (value != null)
+ buffer += value;
+ } else {
+ buffer += this.renderTokens(token[4], context, partials, originalTemplate);
+ }
+
+ break;
+ case '^':
+ value = context.lookup(token[1]);
+
+ // 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 += this.renderTokens(token[4], context, partials, originalTemplate);
+
+ break;
+ case '>':
+ if (!partials)
+ continue;
+
+ value = isFunction(partials) ? partials(token[1]) : partials[token[1]];
+
+ if (value != null)
+ buffer += this.renderTokens(this.parse(value), context, partials, value);
+
+ break;
+ case '&':
+ value = context.lookup(token[1]);
+
+ if (value != null)
+ buffer += value;
+
+ break;
+ case 'name':
+ value = context.lookup(token[1]);
+
+ if (value != null)
+ buffer += mustache.escape(value);
+
+ break;
+ case 'text':
+ buffer += token[1];
+ break;
+ }
+ }
+
+ return buffer;
+ };
+
+ mustache.name = "mustache.js";
+ mustache.version = "0.8.2";
+ mustache.tags = [ "{{", "}}" ];
+
+ // All high-level mustache.* functions use this writer.
+ var defaultWriter = new Writer();
+
+ /**
+ * Clears all cached templates in the default writer.
+ */
+ mustache.clearCache = function () {
+ return defaultWriter.clearCache();
+ };
+
+ /**
+ * Parses and caches the given template in the default writer and returns the
+ * array of tokens it contains. Doing this ahead of time avoids the need to
+ * parse templates on the fly as they are rendered.
+ */
+ mustache.parse = function (template, tags) {
+ return defaultWriter.parse(template, tags);
+ };
+
+ /**
+ * 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 (isFunction(send)) {
+ send(result);
+ } else {
+ return result;
+ }
+ };
+
+ // Export the escaping function so that the user may override it.
+ // See https://github.com/janl/mustache.js/issues/244
+ mustache.escape = escapeHtml;
+
+ // Export these mainly for testing, but also for advanced usage.
+ mustache.Scanner = Scanner;
+ mustache.Context = Context;
+ mustache.Writer = Writer;
+
+}));
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff