doT.js 5.0 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. version: "1.0.3",
  8. templateSettings: {
  9. evaluate: /\{\{([\s\S]+?(\}?)+)\}\}/g,
  10. interpolate: /\{\{=([\s\S]+?)\}\}/g,
  11. encode: /\{\{!([\s\S]+?)\}\}/g,
  12. use: /\{\{#([\s\S]+?)\}\}/g,
  13. useParams: /(^|[^\w$])def(?:\.|\[[\'\"])([\w$\.]+)(?:[\'\"]\])?\s*\:\s*([\w$\.]+|\"[^\"]+\"|\'[^\']+\'|\{[^\}]+\})/g,
  14. define: /\{\{##\s*([\w\.$]+)\s*(\:|=)([\s\S]+?)#\}\}/g,
  15. defineParams:/^\s*([\w$]+):([\s\S]+)/,
  16. conditional: /\{\{\?(\?)?\s*([\s\S]*?)\s*\}\}/g,
  17. iterate: /\{\{~\s*(?:\}\}|([\s\S]+?)\s*\:\s*([\w$]+)\s*(?:\:\s*([\w$]+))?\s*\}\})/g,
  18. varname: "it",
  19. strip: true,
  20. append: true,
  21. selfcontained: false,
  22. doNotSkipEncoded: false
  23. },
  24. template: undefined, //fn, compile template
  25. compile: undefined //fn, for express
  26. }, _globals;
  27. doT.encodeHTMLSource = function(doNotSkipEncoded) {
  28. var encodeHTMLRules = { "&": "&#38;", "<": "&#60;", ">": "&#62;", '"': "&#34;", "'": "&#39;", "/": "&#47;" },
  29. matchHTML = doNotSkipEncoded ? /[&<>"'\/]/g : /&(?!#?\w+;)|<|>|"|'|\//g;
  30. return function(code) {
  31. return code ? code.toString().replace(matchHTML, function(m) {return encodeHTMLRules[m] || m;}) : "";
  32. };
  33. };
  34. _globals = (function(){ return this || (0,eval)("this"); }());
  35. if (typeof module !== "undefined" && module.exports) {
  36. module.exports = doT;
  37. } else if (typeof define === "function" && define.amd) {
  38. define(function(){return doT;});
  39. } else {
  40. _globals.doT = doT;
  41. }
  42. var startend = {
  43. append: { start: "'+(", end: ")+'", startencode: "'+encodeHTML(" },
  44. split: { start: "';out+=(", end: ");out+='", startencode: "';out+=encodeHTML(" }
  45. }, skip = /$^/;
  46. function resolveDefs(c, block, def) {
  47. return ((typeof block === "string") ? block : block.toString())
  48. .replace(c.define || skip, function(m, code, assign, value) {
  49. if (code.indexOf("def.") === 0) {
  50. code = code.substring(4);
  51. }
  52. if (!(code in def)) {
  53. if (assign === ":") {
  54. if (c.defineParams) value.replace(c.defineParams, function(m, param, v) {
  55. def[code] = {arg: param, text: v};
  56. });
  57. if (!(code in def)) def[code]= value;
  58. } else {
  59. new Function("def", "def['"+code+"']=" + value)(def);
  60. }
  61. }
  62. return "";
  63. })
  64. .replace(c.use || skip, function(m, code) {
  65. if (c.useParams) code = code.replace(c.useParams, function(m, s, d, param) {
  66. if (def[d] && def[d].arg && param) {
  67. var rw = (d+":"+param).replace(/'|\\/g, "_");
  68. def.__exp = def.__exp || {};
  69. def.__exp[rw] = def[d].text.replace(new RegExp("(^|[^\\w$])" + def[d].arg + "([^\\w$])", "g"), "$1" + param + "$2");
  70. return s + "def.__exp['"+rw+"']";
  71. }
  72. });
  73. var v = new Function("def", "return " + code)(def);
  74. return v ? resolveDefs(c, v, def) : v;
  75. });
  76. }
  77. function unescape(code) {
  78. return code.replace(/\\('|\\)/g, "$1").replace(/[\r\t\n]/g, " ");
  79. }
  80. doT.template = function(tmpl, c, def) {
  81. c = c || doT.templateSettings;
  82. var cse = c.append ? startend.append : startend.split, needhtmlencode, sid = 0, indv,
  83. str = (c.use || c.define) ? resolveDefs(c, tmpl, def || {}) : tmpl;
  84. str = ("var out='" + (c.strip ? str.replace(/(^|\r|\n)\t* +| +\t*(\r|\n|$)/g," ")
  85. .replace(/\r|\n|\t|\/\*[\s\S]*?\*\//g,""): str)
  86. .replace(/'|\\/g, "\\$&")
  87. .replace(c.interpolate || skip, function(m, code) {
  88. return cse.start + unescape(code) + cse.end;
  89. })
  90. .replace(c.encode || skip, function(m, code) {
  91. needhtmlencode = true;
  92. return cse.startencode + unescape(code) + cse.end;
  93. })
  94. .replace(c.conditional || skip, function(m, elsecase, code) {
  95. return elsecase ?
  96. (code ? "';}else if(" + unescape(code) + "){out+='" : "';}else{out+='") :
  97. (code ? "';if(" + unescape(code) + "){out+='" : "';}out+='");
  98. })
  99. .replace(c.iterate || skip, function(m, iterate, vname, iname) {
  100. if (!iterate) return "';} } out+='";
  101. sid+=1; indv=iname || "i"+sid; iterate=unescape(iterate);
  102. return "';var arr"+sid+"="+iterate+";if(arr"+sid+"){var "+vname+","+indv+"=-1,l"+sid+"=arr"+sid+".length-1;while("+indv+"<l"+sid+"){"
  103. +vname+"=arr"+sid+"["+indv+"+=1];out+='";
  104. })
  105. .replace(c.evaluate || skip, function(m, code) {
  106. return "';" + unescape(code) + "out+='";
  107. })
  108. + "';return out;")
  109. .replace(/\n/g, "\\n").replace(/\t/g, '\\t').replace(/\r/g, "\\r")
  110. .replace(/(\s|;|\}|^|\{)out\+='';/g, '$1').replace(/\+''/g, "");
  111. //.replace(/(\s|;|\}|^|\{)out\+=''\+/g,'$1out+=');
  112. if (needhtmlencode) {
  113. if (!c.selfcontained && _globals && !_globals._encodeHTML) _globals._encodeHTML = doT.encodeHTMLSource(c.doNotSkipEncoded);
  114. str = "var encodeHTML = typeof _encodeHTML !== 'undefined' ? _encodeHTML : ("
  115. + doT.encodeHTMLSource.toString() + "(" + (c.doNotSkipEncoded || '') + "));"
  116. + str;
  117. }
  118. try {
  119. return new Function(c.varname, str);
  120. } catch (e) {
  121. if (typeof console !== "undefined") console.log("Could not create a template function: " + str);
  122. throw e;
  123. }
  124. };
  125. doT.compile = function(tmpl, def) {
  126. return doT.template(tmpl, null, def);
  127. };
  128. }());