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// doT.js
// 2011, Laura Doktorova, https://github.com/olado/doT
// Licensed under the MIT license.

(function() {
    "use strict";

    var doT = {
        version: '1.0.17',
        templateSettings: {
            evaluate:    /\{\{([\s\S]+?\}?)\}\}/g,
            interpolate: /\{\{=([\s\S]+?)\}\}/g,
            encode:      /\{\{!([\s\S]+?)\}\}/g,
            use:         /\{\{#([\s\S]+?)\}\}/g,
            useParams:   /(^|[^\w$])def(?:\.|\[[\'\"])([\w$\.]+)(?:[\'\"]\])?\s*\:\s*([\w$\.]+|\"[^\"]+\"|\'[^\']+\'|\{[^\}]+\})/g,
            define:      /\{\{##\s*([\w\.$]+)\s*(\:|=)([\s\S]+?)#\}\}/g,
            defineParams:/^\s*([\w$]+):([\s\S]+)/,
            conditional: /\{\{\?(\?)?\s*([\s\S]*?)\s*\}\}/g,
            iterate:     /\{\{~\s*(?:\}\}|([\s\S]+?)\s*\:\s*([\w$]+)\s*(?:\:\s*([\w$]+))?\s*\}\})/g,
            varname:	'it',
            strip:		true,
            append:		true,
            selfcontained: false
        },
        template: undefined, //fn, compile template
        compile:  undefined  //fn, for express
    };

    if (typeof module !== 'undefined' && module.exports) {
        module.exports = doT;
    } else if (typeof define === 'function' && define.amd) {
        define(function(){return doT;});
    } else {
        (function(){ return this || (0,eval)('this'); }()).doT = doT;
    }

    function encodeHTMLSource() {
        var encodeHTMLRules = { "&": "&", "<": "<", ">": ">", '"': '"', "'": ''', "/": '/' },
            matchHTML = /&(?!#?\w+;)|<|>|"|'|\//g;
        return function() {
            return this ? this.replace(matchHTML, function(m) {return encodeHTMLRules[m] || m;}) : this;
        };
    }
    String.prototype.encodeHTML = encodeHTMLSource();

    var startend = {
        append: { start: "'+(",      end: ")+'",      endencode: "||'').toString().encodeHTML()+'" },
        split:  { start: "';out+=(", end: ");out+='", endencode: "||'').toString().encodeHTML();out+='"}
    }, skip = /$^/;

    function resolveDefs(c, block, def) {
        return ((typeof block === 'string') ? block : block.toString())
            .replace(c.define || skip, function(m, code, assign, value) {
                if (code.indexOf('def.') === 0) {
                    code = code.substring(4);
                }
                if (!(code in def)) {
                    if (assign === ':') {
                        if (c.defineParams) value.replace(c.defineParams, function(m, param, v) {
                            def[code] = {arg: param, text: v};
                        });
                        if (!(code in def)) def[code]= value;
                    } else {
                        new Function("def", "def['"+code+"']=" + value)(def);
                    }
                }
                return '';
            })
            .replace(c.use || skip, function(m, code) {
                if (c.useParams) code = code.replace(c.useParams, function(m, s, d, param) {
                    if (def[d] && def[d].arg && param) {
                        var rw = (d+":"+param).replace(/'|\\/g, '_');
                        def.__exp = def.__exp || {};
                        def.__exp[rw] = def[d].text.replace(new RegExp("(^|[^\\w$])" + def[d].arg + "([^\\w$])", "g"), "$1" + param + "$2");
                        return s + "def.__exp['"+rw+"']";
                    }
                });
                var v = new Function("def", "return " + code)(def);
                return v ? resolveDefs(c, v, def) : v;
            });
    }

    function unescape(code) {
        return code.replace(/\\('|\\)/g, "$1").replace(/[\r\t\n]/g, ' ');
    }

    doT.template = function(tmpl, c, def) {
        c = c || doT.templateSettings;
        var cse = c.append ? startend.append : startend.split, needhtmlencode, sid = 0, indv,
            str  = (c.use || c.define) ? resolveDefs(c, tmpl, def || {}) : tmpl;

        str = ("var out='" + (c.strip ? str.replace(/(^|\r|\n)\t* +| +\t*(\r|\n|$)/g,' ')
            .replace(/\r|\n|\t|\/\*[\s\S]*?\*\//g,''): str)
            .replace(/'|\\/g, '\\$&')
            .replace(c.interpolate || skip, function(m, code) {
                return cse.start + unescape(code) + cse.end;
            })
            .replace(c.encode || skip, function(m, code) {
                needhtmlencode = true;
                return cse.start + unescape(code) + cse.endencode;
            })
            .replace(c.conditional || skip, function(m, elsecase, code) {
                return elsecase ?
                    (code ? "';}else if(" + unescape(code) + "){out+='" : "';}else{out+='") :
                    (code ? "';if(" + unescape(code) + "){out+='" : "';}out+='");
            })
            .replace(c.iterate || skip, function(m, iterate, vname, iname) {
                if (!iterate) return "';} } out+='";
                sid+=1; indv=iname || "i"+sid; iterate=unescape(iterate);
                return "';var arr"+sid+"="+iterate+";if(arr"+sid+"){var "+vname+","+indv+"=-1,l"+sid+"=arr"+sid+".length-1;while("+indv+"