basant307/AI_Governance_Project

1//compile doT templates to js functions2'use strict';3 4var glob = require('glob')5  , fs = require('fs')6  , path = require('path')7  , doT = require('dot')8  , beautify = require('js-beautify').js_beautify;9 10var defsRootPath = process.argv[2] || path.join(__dirname, '../lib');11 12var defs = {};13var defFiles = glob.sync('./dot/**/*.def', { cwd: defsRootPath });14defFiles.forEach(function (f) {15  var name = path.basename(f, '.def');16  defs[name] = fs.readFileSync(path.join(defsRootPath, f));17});18 19var filesRootPath = process.argv[3] || path.join(__dirname, '../lib');20var files = glob.sync('./dot/**/*.jst', { cwd: filesRootPath });21 22var dotjsPath = path.join(filesRootPath, './dotjs');23try { fs.mkdirSync(dotjsPath); } catch(e) {}24 25console.log('\n\nCompiling:');26 27var FUNCTION_NAME = /function\s+anonymous\s*\(it[^)]*\)\s*{/;28var OUT_EMPTY_STRING = /out\s*\+=\s*'\s*';/g;29var ISTANBUL = /'(istanbul[^']+)';/g;30var ERROR_KEYWORD = /\$errorKeyword/g;31var ERROR_KEYWORD_OR = /\$errorKeyword\s+\|\|/g;32var VARS = [33  '$errs', '$valid', '$lvl', '$data', '$dataLvl',34  '$errorKeyword', '$closingBraces', '$schemaPath',35  '$validate'36];37 38files.forEach(function (f) {39  var keyword = path.basename(f, '.jst');40  var targetPath = path.join(dotjsPath, keyword + '.js');41  var template = fs.readFileSync(path.join(filesRootPath, f));42  var code = doT.compile(template, defs);43  code = code.toString()44             .replace(OUT_EMPTY_STRING, '')45             .replace(FUNCTION_NAME, 'function generate_' + keyword + '(it, $keyword, $ruleType) {')46             .replace(ISTANBUL, '/* $1 */');47  removeAlwaysFalsyInOr();48  VARS.forEach(removeUnusedVar);49  code = "'use strict';\nmodule.exports = " + code;50  code = beautify(code, { indent_size: 2 }) + '\n';51  fs.writeFileSync(targetPath, code);52  console.log('compiled', keyword);53 54  function removeUnusedVar(v) {55    v = v.replace(/\$/g, '\\$$');56    var regexp = new RegExp(v + '[^A-Za-z0-9_$]', 'g');57    var count = occurrences(regexp);58    if (count == 1) {59      regexp = new RegExp('var\\s+' + v + '\\s*=[^;]+;|var\\s+' + v + ';');60      code = code.replace(regexp, '');61    }62  }63 64  function removeAlwaysFalsyInOr() {65    var countUsed = occurrences(ERROR_KEYWORD);66    var countOr = occurrences(ERROR_KEYWORD_OR);67    if (countUsed == countOr + 1) code = code.replace(ERROR_KEYWORD_OR, '');68  }69 70  function occurrences(regexp) {71    return (code.match(regexp) || []).length;72  }73});74