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Code Editor : fd46d03b1a5586bf261afe317919e6de9ccec7b5

/*!
 * mustache.js - Logic-less {{mustache}} templates with JavaScript
 * http://github.com/janl/mustache.js
 */

/*global define: false*/

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 = {
    "&": "&amp;",
    "<": "&lt;",
    ">": "&gt;",
    '"': '&quot;',
    "'": '&#39;',
    "/": '&#x2F;'
  };

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 = "1.0.0";
  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;

}));

${this.title}

Code Editor : fd46d03b1a5586bf261afe317919e6de9ccec7b5