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一木源/js依赖/drT.js
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189
一木源/js依赖/drT.js
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// drT.js
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// 2022/09/30 write by hjdhnx
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// Licensed under the MIT license.
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(function () {
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"use strict";
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var drT = {
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name: "drT",
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version: "1.0.0",
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templateSettings: {
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evaluate: /\{\{([\s\S]+?(\}?)+)\}\}/g,
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interpolate: /\{\{([\s\S]+?)\}\}/g, // 变量渲染
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encode: /\{\{@([\s\S]+?)\}\}/g, // 变量自动url编码
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use: /\{\{#([\s\S]+?)\}\}/g,
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useParams: /(^|[^\w$])def(?:\.|\[[\'\"])([\w$\.]+)(?:[\'\"]\])?\s*\:\s*([\w$\.]+|\"[^\"]+\"|\'[^\']+\'|\{[^\}]+\})/g,
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define: /\{\{##\s*([\w\.$]+)\s*(\:|=)([\s\S]+?)#\}\}/g,
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defineParams:/^\s*([\w$]+):([\s\S]+)/,
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conditional: /\{\{\?(\?)?\s*([\s\S]*?)\s*\}\}/g, // ? if ?? else if ?? else
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iterate: /\{\{~\s*(?:\}\}|([\s\S]+?)\s*\:\s*([\w$]+)\s*(?:\:\s*([\w$]+))?\s*\}\})/g,
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varname: "fl",
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strip: true,
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append: true,
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selfcontained: false,
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doNotSkipEncoded: false
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},
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template: undefined, //fn, compile template
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compile: undefined, //fn, for express
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log: true
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}, _globals;
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drT.encodeHTMLSource = function(doNotSkipEncoded) {
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var encodeHTMLRules = { "&": "&", "<": "<", ">": ">", '"': """, "'": "'", "/": "/" },
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matchHTML = doNotSkipEncoded ? /[&<>"'\/]/g : /&(?!#?\w+;)|<|>|"|'|\//g;
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return function(code) {
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return code ? code.toString().replace(matchHTML, function(m) {return encodeHTMLRules[m] || m;}) : "";
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};
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};
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_globals = (function(){ return this || (0,eval)("this"); }());
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/* istanbul ignore else */
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if (typeof module !== "undefined" && module.exports) {
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module.exports = drT;
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} else if (typeof define === "function" && define.amd) {
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define(function(){return drT;});
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} else {
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_globals.drT = drT;
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}
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var startend = {
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append: { start: "'+(", end: ")+'", startencode: "'+encodeHTML(" },
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split: { start: "';out+=(", end: ");out+='", startencode: "';out+=encodeHTML(" }
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}, skip = /$^/;
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function resolveDefs(c, block, def) {
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return ((typeof block === "string") ? block : block.toString())
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.replace(c.define || skip, function(m, code, assign, value) {
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if (code.indexOf("def.") === 0) {
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code = code.substring(4);
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}
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if (!(code in def)) {
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if (assign === ":") {
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if (c.defineParams) value.replace(c.defineParams, function(m, param, v) {
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def[code] = {arg: param, text: v};
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});
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if (!(code in def)) def[code]= value;
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} else {
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new Function("def", "def['"+code+"']=" + value)(def);
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}
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}
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return "";
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})
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.replace(c.use || skip, function(m, code) {
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if (c.useParams) code = code.replace(c.useParams, function(m, s, d, param) {
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if (def[d] && def[d].arg && param) {
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var rw = (d+":"+param).replace(/'|\\/g, "_");
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def.__exp = def.__exp || {};
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def.__exp[rw] = def[d].text.replace(new RegExp("(^|[^\\w$])" + def[d].arg + "([^\\w$])", "g"), "$1" + param + "$2");
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return s + "def.__exp['"+rw+"']";
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}
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});
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var v = new Function("def", "return " + code)(def);
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return v ? resolveDefs(c, v, def) : v;
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});
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}
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function unescape(code) {
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return code.replace(/\\('|\\)/g, "$1").replace(/[\r\t\n]/g, " ");
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}
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drT.template = function(tmpl, c, def) {
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c = c || drT.templateSettings;
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var cse = c.append ? startend.append : startend.split, needhtmlencode, sid = 0, indv,
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str = (c.use || c.define) ? resolveDefs(c, tmpl, def || {}) : tmpl;
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// console.log(str);
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let beforeCode = '';
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if(str.match(c.interpolate || skip)){
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let inter_codes = str.match(c.interpolate || skip);
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let inter_dict = {};
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inter_codes.forEach(item=>{
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item.replace(c.interpolate || skip,function (m,code) {
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let varname = code.split('.')[0];
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if(!inter_dict.hasOwnProperty(varname)){
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let beginCode = `if(typeof(${varname})==='undefined'){${varname}={}}`;
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inter_dict[varname] = beginCode;
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}if(!inter_dict.hasOwnProperty(code)){
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let beginCode = `if(typeof(${code})==='undefined'){${code}=''};`;
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inter_dict[code] = beginCode;
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}
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});
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});
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let beginCode = Object.values(inter_dict).join('\n');
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// console.log(beginCode);
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beforeCode += beginCode;
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}
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str = beforeCode+("var out='" + (c.strip ? str.replace(/(^|\r|\n)\t* +| +\t*(\r|\n|$)/g," ")
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.replace(/\r|\n|\t|\/\*[\s\S]*?\*\//g,""): str)
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.replace(/'|\\/g, "\\$&")
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.replace(c.encode || skip, function(m, code) {
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needhtmlencode = true;
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return cse.startencode + unescape(code) + cse.end;
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})
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.replace(c.interpolate || skip, function(m, code) {
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let varname = code.split('.')[0];
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// console.log(varname === code);
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// console.log(`varname:${varname},code:${code}`);
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if(varname === code){
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let res = cse.start + `JSON.stringify(${unescape(code)})` + cse.end;
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// console.log(res);
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return res
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}
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return cse.start + unescape(code) + cse.end;
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})
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.replace(c.conditional || skip, function(m, elsecase, code) {
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return elsecase ?
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(code ? "';}else if(" + unescape(code) + "){out+='" : "';}else{out+='") :
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(code ? "';if(" + unescape(code) + "){out+='" : "';}out+='");
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})
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.replace(c.iterate || skip, function(m, iterate, vname, iname) {
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if (!iterate) return "';} } out+='";
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sid+=1; indv=iname || "i"+sid; iterate=unescape(iterate);
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return "';var arr"+sid+"="+iterate+";if(arr"+sid+"){var "+vname+","+indv+"=-1,l"+sid+"=arr"+sid+".length-1;while("+indv+"<l"+sid+"){"
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+vname+"=arr"+sid+"["+indv+"+=1];out+='";
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})
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.replace(c.evaluate || skip, function(m, code) {
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return "';" + unescape(code) + "out+='";
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})
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+ "';return out;")
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.replace(/\n/g, "\\n").replace(/\t/g, '\\t').replace(/\r/g, "\\r")
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.replace(/(\s|;|\}|^|\{)out\+='';/g, '$1').replace(/\+''/g, "");
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//.replace(/(\s|;|\}|^|\{)out\+=''\+/g,'$1out+=');
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if (needhtmlencode) {
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// console.log('需要编码');
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// console.log(c.doNotSkipEncoded);
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if (!c.selfcontained && _globals && !_globals._encodeHTML) _globals._encodeHTML = drT.encodeHTMLSource(c.doNotSkipEncoded);
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str = "var encodeHTML = typeof _encodeHTML !== 'undefined' ? _encodeHTML : ("
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+ drT.encodeHTMLSource.toString() + "(" + (c.doNotSkipEncoded || '') + "));"
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+ str;
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// console.log(str);
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}else{
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// console.log('不需要编码');
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}
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// console.log(c.varname);
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// console.log(str);
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try {
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return new Function(c.varname, str);
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} catch (e) {
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/* istanbul ignore else */
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// console.log(e.message);
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if (typeof console !== "undefined") console.log("Could not create a template function: " + str);
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throw e;
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}
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};
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drT.compile = function(tmpl, def) {
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return drT.template(tmpl, null, def);
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};
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drT.renderText = function (tmpl,dict,varname){
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varname = varname||'';
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if(varname){
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drT.templateSettings.varname = varname;
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}
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dict = dict||{};
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return drT.compile(tmpl)(dict);
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};
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}());
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