mostache.js

 /*!
 * mustache.js - Logic-less {{mustache}} templates with JavaScript
 * http://github.com/janl/mustache.js
 */
// modified by dandavis to become Mo'stache
// mostache, mo'mustache (mustache 2.1.3 fork )	
// see https://github.com/rndme/mostache/ for new features and usage

/*global define: false Mustache: true*/

(function defineMustache (global, factory) {
  if (typeof exports === 'object' && exports && typeof exports.nodeName !== 'string') {
    factory(exports); // CommonJS
  } else if (typeof define === 'function' && define.amd) {
    define(['exports'], factory); // AMD
  } else {
    global.Mustache = {};
    factory(Mustache); // script, wsh, asp
  }
  factory.global=global;
}(this, function mustacheFactory (mustache) {
  "use strict";
  var 	objectToString = Object.prototype.toString,
		isArray = Array.isArray || function isArrayPolyfill (object) {
    	  return objectToString.call(object) === '[object Array]';
  	},
	nil, // much faster than undefined in v8
	rxElse= /\{\{!([\w\.]+?)\}\}/g,
	rxRazor=/(\W)@([#\^!\/\|\.\)\(]?[\w\.$|]+)/g,
	rxEqual=/\s*\=\s*/, 
	rxColon=/\s*\:\s*/,
	rxComma=/\s*\,\s*/,
	rxPipe=/\s*\|\s*/,
	rxIndex=/\{INDEX\}/g,
	rxHTML=/[&<>"'\/]/g,
	rxRx=/[\-\[\]{}()*+?.,\\\^$|#\s]/g,
	sepRX=/\{SEP\}([\w\W]+?)\{\/SEP\}/g;
  
  function isFunction (object) {
    return typeof object === 'function';
  }

  /**
   * More correct typeof string handling array
   * which normally returns typeof 'object'
   */
  function typeStr (obj) {
    return isArray(obj) ? 'array' : typeof obj;
  }

  function escapeRegExp (string) {
    return string.replace(rxRx, '\\$&');
  }

  /**
   * Null safe way of checking whether or not an object,
   * including its prototype, has a given property
   */
  function hasProperty (obj, propName) {
    return obj != nil && typeof obj === 'object' && (propName in obj);

  }
  
  //var nonSpaceRe = /\S/;
  //function isWhitespace (string) {	return nonSpaceRe.test(string);  }
 var isWhitespace=/\S/;
  
  var entityMap = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#39;',
    '/': '&#x2F;'
  };

  function escapeHtml (string) {
    return String(string).replace(rxHTML, function fromEntityMap (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 (tagsToCompile) {
      if (typeof tagsToCompile === 'string')
        tagsToCompile = tagsToCompile.split(spaceRe, 2);

      if (!isArray(tagsToCompile) || tagsToCompile.length !== 2)
        throw new Error('Invalid tags: ' + tagsToCompile);

      openingTagRe = new RegExp(escapeRegExp(tagsToCompile[0]) + '\\s*');
      closingTagRe = new RegExp('\\s*' + escapeRegExp(tagsToCompile[1]));
      closingCurlyRe = new RegExp('\\s*' + escapeRegExp('}' + tagsToCompile[1]));
    }

    compileTags(tags || mustache.tags);

    var scanner = new Scanner(template);

    var start, type, value, chr, token, openSection;
    while (scanner.tail){ //!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.test(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 (lastToken && token[0] === 'text' && 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 eos () {
    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 scan (re) {
	var t=this.tail, match, string;
//	if(!re.test(t)) return '';
	
    match = t.match(re);

    if (!match || match.index !== 0)
      return '';

    string = match[0];

    this.tail = t.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 scanUntil (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;
    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 push (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 lookup (name) {
    var cache = this.cache;

    var value, u, len, comp, 
	 // begin mostache patch to find methods in context chains
	rep, useSelf=[], last;
	  
	if(name.indexOf("!=")!==-1){ 
		rep=name.trim().split(rxEqual); 
	 	name=rep[0].slice(0,-1);
		comp=cache[name];
		if(comp==u) comp = cache["."][name];
		if(rep[1]==comp) name = "";
	 	rep=u;
	}
	
	if(name.indexOf("=")!==-1){ 
		rep=name.trim().split(rxEqual); 
	 	name=rep[0];
	 	if( !(cache[name]==rep[1] || cache["."][name]==rep[1]) ){  name="";  }
	 	rep=u;
	}

	if(name.indexOf(":")!==-1){ 
		rep=name.trim().split(rxColon);
	 	name=rep[0];
		cache['__NAME']=rep[1];
		rep=u;
	}

	if(name.indexOf("|")!==-1){
		rep=name.trim().split(rxPipe).map(function(a,b){

			if(a.slice(0,1)==="."){ 
				useSelf[b-1] = true;
				a=a.slice(1);
			}			
			return a;
		});		
		name=rep.shift();
	} // end mostache patch

	
    //if (cache.hasOwnProperty(name)) {
	if((value = cache[name])==u){
      //value = cache[name];
    //} else {
      var context = this, names, index, lookupHit = false;

      while (context) {
        if (name.indexOf('.') > 0) {
          value = context.view;
          names = name.split('.');
          index = 0;
          
          if(names[0]==="__" && !context.parent) names.shift(); // support root lookup

          /**
           * Using the dot notion path in `name`, we descend through the
           * nested objects.
           *
           * To be certain that the lookup has been successful, we have to
           * check if the last object in the path actually has the property
           * we are looking for. We store the result in `lookupHit`.
           *
           * This is specially necessary for when the value has been set to
           * `undefined` and we want to avoid looking up parent contexts.
           **/
		  len=names.length;
          while (value != u && index < len) {
            if (index === len - 1)
              lookupHit = hasProperty(value, names[index]);

            value = value[names[index++]];
          }
        } else {
          value = context.view[name];
          lookupHit = hasProperty(context.view, name);
        }

        if (lookupHit)
          break;

        context = context.parent;
      }

      cache[name] = value;
    }
	
	
	 // begin mostache patch to handle passing in methods with arguments to expressions:
	 if(rep!==u){
		rep.forEach(function(x, i){
			function resolve(start, path) {
				return path.split(/[\.,]/).reduce(function(obj, prop) {
					return obj && obj[prop];
				}, start);
			}   
			var args=x.split("(");
				x=args.shift();
			
			if(args.length){			
				args=args[0].trim().split(")")[0].trim().split(rxComma).map(function(a){
					try{return JSON.parse(a);}catch(y){return a;}
				});
			}
			var u,o=resolve( useSelf[i] ? (value===u?name:value) : mustacheFactory.global, x), v=value;
			if(typeof o ==="function"){
				if(value===u){ value=name; }
				
					
				try{
					if(useSelf[i]){ 
						if(args.length){
							value=o.apply(value, args);
						}else{
							value=o.call(value);
						}
					}else{  
						if(args.length){
							switch(args.length){
								case 1: return value=o(value, args[0]);
								case 2: return value=o(value, args[0], args[1]);
								case 3: return value=o(value, args[0], args[1], args[2]);
								default: return o.apply(this, [value].concat(args));
							}
							
						}else{
							value=o(value);
						}
					}
				}catch(y){ } // shhh		
				
			}//end if found function?
		}); // end forEach rep
	 } // end if rep?
	 
	 //handle native functions different than user-land functions (minus bind()'d ones)
    if (isFunction(value)){
		 if(String(value).indexOf("[native code]")!==-1 && last){
			value=value.call(last);
		 }else{
			value = value.call(this.view);
		 }
	}
	 
	 // end mostache patch
    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 clearCache () {
    this.cache = {};
  };

  /**
   * Parses and caches the given `template` and returns the array of tokens
   * that is generated from the parse.
   */
  Writer.prototype.parse = function parse (template, tags) {
    var u, cache = this.cache;
    var tokens = cache[template];

    if (tokens == u)
      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 render (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 renderTokens (tokens, context, partials, originalTemplate) {
    var buffer = '';

    var token, symbol, value, u;
    for (var i = 0, numTokens = tokens.length; i < numTokens; ++i) {
      value = u;
      token = tokens[i];
      symbol = token[0];
	switch(symbol){
	  case '#': value = this.renderSection(token, context, partials, originalTemplate); break;
	  case '^': value = this.renderInverted(token, context, partials, originalTemplate); break;
	  case '>': value = this.renderPartial(token, context, partials, originalTemplate); break;
	  case '&': value = this.unescapedValue(token, context); break;
	  case 'name': value = this.escapedValue(token, context); break;
	  case 'text': value = this.rawValue(token); break;
	}

      if (value !== u)
        buffer += value;
    }

    return buffer;
  };

  Writer.prototype.renderSection = function renderSection (token, context, partials, originalTemplate) {
    var self = this;
    var buffer = '', u;
    var value = context.lookup(token[1]), sep="$1";

    // This function is used to render an arbitrary template
    // in the current context by higher-order sections.
    function subRender (template) {
      return self.render(template, context, partials);
    }

    if (!value) return;

    if (isArray(value)) {
      for (var j = 0, valueLength = value.length; j < valueLength; ++j) {
		sep= (valueLength-1)===j ? "" : "$1";// separator value
        buffer += this.renderTokens(token[4], context.push(value[j]), partials, originalTemplate).replace(rxIndex, j+1).replace(sepRX, sep);
      }
    } else if (typeof value === 'object' || typeof value === 'string' || typeof value === 'number') {
      	// handle object:key iterations:
      	if(value != u && typeof value === 'object' && context.cache.__NAME) {
		for(var k in value) {
			var v = value[k], v2 = v;
			if(typeof v === "object") {
				v = {};
				v[context.cache.__NAME] = k;
				for(var it in v2) if(v2.hasOwnProperty(it)) v[it] = v2[it];
			} else {
				v = new v.constructor(v);
				v[context.cache.__NAME] = k;
			}
			sep = (valueLength - 1) === j ? "" : "$1"; // separator value
			buffer += this.renderTokens(token[4], context.push(v), partials, originalTemplate).replace(rxIndex, k).replace(sepRX, sep);
		}// next k
	} else { //numbers and strings and non-iterated objects:
		buffer += this.renderTokens(token[4], context.push(value), partials, originalTemplate).replace(sepRX, sep);
	}
    } 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 != u)
        buffer += value;
    } else {
      buffer += this.renderTokens(token[4], context, partials, originalTemplate);
    }
    return buffer;
  };

  Writer.prototype.renderInverted = function renderInverted (token, context, partials, originalTemplate) {
    var 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))
      return this.renderTokens(token[4], context, partials, originalTemplate);
  };

  Writer.prototype.renderPartial = function renderPartial (token, context, partials) {
    if (!partials) return;
    var u, key=String(token[1]).trim().split(/\s+/), 
	value = partials[token[1]];
	if(isFunction(partials)) value = partials(key[0], key.slice(1), context.view );
	if(isFunction(partials[key[0]])) value = partials[key[0]](key.slice(1), context.view );
	if (value != u) return this.renderTokens(this.parse(value), context, partials, value);
  };
  
  Writer.prototype.unescapedValue = function unescapedValue (token, context) {
    var u, value = context.lookup(token[1]);
    if (value != u)
      return value;
  };

  Writer.prototype.escapedValue = function escapedValue (token, context) {
    var u,value = context.lookup(token[1]);
    if (value != u)
      return mustache.escape(value);
  };

  Writer.prototype.rawValue = function rawValue (token) {
    return token[1];
  };

  mustache.name = 'mustache.js';
  mustache.version = '2.1.3';
  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 clearCache () {
    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 parse (template, tags) {
    return defaultWriter.parse(template, tags);
  };

  /**
   * Renders the `template` with the given `view` and `partials` using the
   * default writer.
   */
	  
  mustache.render = function render (template, view, partials) {
    if (typeof template !== 'string') {
      throw new TypeError('Invalid template! Template should be a "string" ' +
                          'but "' + typeStr(template) + '" was given as the first ' +
                          'argument for mustache#render(template, view, partials)');
    }
	if(template.indexOf("{{@@}}")!==-1) template = template.replace(rxRazor, "$1{{$2}}");

	var head="{{=<@ @>=}}";
	if(template.indexOf("<@") !==-1 && template.indexOf("@>") !==-1 && template.slice(0,11)!=head){
		template = render(head+" "+template, view, partials||{});
	}

    return defaultWriter.render(template.replace(rxElse, "{{/$1}}{{^$1}}"), view, partials);
  };

  // This is here for backwards compatibility with 0.4.x.,
  /*eslint-disable */ // eslint wants camel cased function name
  mustache.to_html = function to_html (template, view, partials, send) {
    /*eslint-enable*/

    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;

}));