1//compile doT templates to js functions 2'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