doT.js 5.1 KB

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  1. // doT.js
  2. // 2011-2014, Laura Doktorova, https://github.com/olado/doT
  3. // Licensed under the MIT license.
  4. (function () {
  5. "use strict";
  6. var doT = {
  7. name: "doT",
  8. version: "1.1.1",
  9. templateSettings: {
  10. evaluate: /\{\{([\s\S]+?(\}?)+)\}\}/g,
  11. interpolate: /\{\{=([\s\S]+?)\}\}/g,
  12. encode: /\{\{!([\s\S]+?)\}\}/g,
  13. use: /\{\{#([\s\S]+?)\}\}/g,
  14. useParams: /(^|[^\w$])def(?:\.|\[[\'\"])([\w$\.]+)(?:[\'\"]\])?\s*\:\s*([\w$\.]+|\"[^\"]+\"|\'[^\']+\'|\{[^\}]+\})/g,
  15. define: /\{\{##\s*([\w\.$]+)\s*(\:|=)([\s\S]+?)#\}\}/g,
  16. defineParams:/^\s*([\w$]+):([\s\S]+)/,
  17. conditional: /\{\{\?(\?)?\s*([\s\S]*?)\s*\}\}/g,
  18. iterate: /\{\{~\s*(?:\}\}|([\s\S]+?)\s*\:\s*([\w$]+)\s*(?:\:\s*([\w$]+))?\s*\}\})/g,
  19. varname: "it",
  20. strip: true,
  21. append: true,
  22. selfcontained: false,
  23. doNotSkipEncoded: false
  24. },
  25. template: undefined, //fn, compile template
  26. compile: undefined, //fn, for express
  27. log: true
  28. }, _globals;
  29. doT.encodeHTMLSource = function(doNotSkipEncoded) {
  30. var encodeHTMLRules = { "&": "&#38;", "<": "&#60;", ">": "&#62;", '"': "&#34;", "'": "&#39;", "/": "&#47;" },
  31. matchHTML = doNotSkipEncoded ? /[&<>"'\/]/g : /&(?!#?\w+;)|<|>|"|'|\//g;
  32. return function(code) {
  33. return code ? code.toString().replace(matchHTML, function(m) {return encodeHTMLRules[m] || m;}) : "";
  34. };
  35. };
  36. _globals = (function(){ return this || (0,eval)("this"); }());
  37. /* istanbul ignore else */
  38. if (typeof module !== "undefined" && module.exports) {
  39. module.exports = doT;
  40. } else if (typeof define === "function" && define.amd) {
  41. define(function(){return doT;});
  42. } else {
  43. _globals.doT = doT;
  44. }
  45. var startend = {
  46. append: { start: "'+(", end: ")+'", startencode: "'+encodeHTML(" },
  47. split: { start: "';out+=(", end: ");out+='", startencode: "';out+=encodeHTML(" }
  48. }, skip = /$^/;
  49. function resolveDefs(c, block, def) {
  50. return ((typeof block === "string") ? block : block.toString())
  51. .replace(c.define || skip, function(m, code, assign, value) {
  52. if (code.indexOf("def.") === 0) {
  53. code = code.substring(4);
  54. }
  55. if (!(code in def)) {
  56. if (assign === ":") {
  57. if (c.defineParams) value.replace(c.defineParams, function(m, param, v) {
  58. def[code] = {arg: param, text: v};
  59. });
  60. if (!(code in def)) def[code]= value;
  61. } else {
  62. new Function("def", "def['"+code+"']=" + value)(def);
  63. }
  64. }
  65. return "";
  66. })
  67. .replace(c.use || skip, function(m, code) {
  68. if (c.useParams) code = code.replace(c.useParams, function(m, s, d, param) {
  69. if (def[d] && def[d].arg && param) {
  70. var rw = (d+":"+param).replace(/'|\\/g, "_");
  71. def.__exp = def.__exp || {};
  72. def.__exp[rw] = def[d].text.replace(new RegExp("(^|[^\\w$])" + def[d].arg + "([^\\w$])", "g"), "$1" + param + "$2");
  73. return s + "def.__exp['"+rw+"']";
  74. }
  75. });
  76. var v = new Function("def", "return " + code)(def);
  77. return v ? resolveDefs(c, v, def) : v;
  78. });
  79. }
  80. function unescape(code) {
  81. return code.replace(/\\('|\\)/g, "$1").replace(/[\r\t\n]/g, " ");
  82. }
  83. doT.template = function(tmpl, c, def) {
  84. c = c || doT.templateSettings;
  85. var cse = c.append ? startend.append : startend.split, needhtmlencode, sid = 0, indv,
  86. str = (c.use || c.define) ? resolveDefs(c, tmpl, def || {}) : tmpl;
  87. str = ("var out='" + (c.strip ? str.replace(/(^|\r|\n)\t* +| +\t*(\r|\n|$)/g," ")
  88. .replace(/\r|\n|\t|\/\*[\s\S]*?\*\//g,""): str)
  89. .replace(/'|\\/g, "\\$&")
  90. .replace(c.interpolate || skip, function(m, code) {
  91. return cse.start + unescape(code) + cse.end;
  92. })
  93. .replace(c.encode || skip, function(m, code) {
  94. needhtmlencode = true;
  95. return cse.startencode + unescape(code) + cse.end;
  96. })
  97. .replace(c.conditional || skip, function(m, elsecase, code) {
  98. return elsecase ?
  99. (code ? "';}else if(" + unescape(code) + "){out+='" : "';}else{out+='") :
  100. (code ? "';if(" + unescape(code) + "){out+='" : "';}out+='");
  101. })
  102. .replace(c.iterate || skip, function(m, iterate, vname, iname) {
  103. if (!iterate) return "';} } out+='";
  104. sid+=1; indv=iname || "i"+sid; iterate=unescape(iterate);
  105. return "';var arr"+sid+"="+iterate+";if(arr"+sid+"){var "+vname+","+indv+"=-1,l"+sid+"=arr"+sid+".length-1;while("+indv+"<l"+sid+"){"
  106. +vname+"=arr"+sid+"["+indv+"+=1];out+='";
  107. })
  108. .replace(c.evaluate || skip, function(m, code) {
  109. return "';" + unescape(code) + "out+='";
  110. })
  111. + "';return out;")
  112. .replace(/\n/g, "\\n").replace(/\t/g, '\\t').replace(/\r/g, "\\r")
  113. .replace(/(\s|;|\}|^|\{)out\+='';/g, '$1').replace(/\+''/g, "");
  114. //.replace(/(\s|;|\}|^|\{)out\+=''\+/g,'$1out+=');
  115. if (needhtmlencode) {
  116. if (!c.selfcontained && _globals && !_globals._encodeHTML) _globals._encodeHTML = doT.encodeHTMLSource(c.doNotSkipEncoded);
  117. str = "var encodeHTML = typeof _encodeHTML !== 'undefined' ? _encodeHTML : ("
  118. + doT.encodeHTMLSource.toString() + "(" + (c.doNotSkipEncoded || '') + "));"
  119. + str;
  120. }
  121. try {
  122. return new Function(c.varname, str);
  123. } catch (e) {
  124. /* istanbul ignore else */
  125. if (typeof console !== "undefined") console.log("Could not create a template function: " + str);
  126. throw e;
  127. }
  128. };
  129. doT.compile = function(tmpl, def) {
  130. return doT.template(tmpl, null, def);
  131. };
  132. }());