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73 lines
2.4 KiB
73 lines
2.4 KiB
//compile doT templates to js functions |
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'use strict'; |
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var glob = require('glob') |
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, fs = require('fs') |
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, path = require('path') |
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, doT = require('dot') |
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, beautify = require('js-beautify').js_beautify; |
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var defsRootPath = process.argv[2] || path.join(__dirname, '../lib'); |
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var defs = {}; |
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var defFiles = glob.sync('./dot/**/*.def', { cwd: defsRootPath }); |
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defFiles.forEach(function (f) { |
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var name = path.basename(f, '.def'); |
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defs[name] = fs.readFileSync(path.join(defsRootPath, f)); |
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}); |
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var filesRootPath = process.argv[3] || path.join(__dirname, '../lib'); |
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var files = glob.sync('./dot/**/*.jst', { cwd: filesRootPath }); |
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var dotjsPath = path.join(filesRootPath, './dotjs'); |
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try { fs.mkdirSync(dotjsPath); } catch(e) {} |
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console.log('\n\nCompiling:'); |
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var FUNCTION_NAME = /function\s+anonymous\s*\(it[^)]*\)\s*{/; |
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var OUT_EMPTY_STRING = /out\s*\+=\s*'\s*';/g; |
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var ISTANBUL = /'(istanbul[^']+)';/g; |
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var ERROR_KEYWORD = /\$errorKeyword/g; |
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var ERROR_KEYWORD_OR = /\$errorKeyword\s+\|\|/g; |
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var VARS = [ |
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'$errs', '$valid', '$lvl', '$data', '$dataLvl', |
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'$errorKeyword', '$closingBraces', '$schemaPath', |
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'$validate' |
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]; |
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files.forEach(function (f) { |
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var keyword = path.basename(f, '.jst'); |
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var targetPath = path.join(dotjsPath, keyword + '.js'); |
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var template = fs.readFileSync(path.join(filesRootPath, f)); |
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var code = doT.compile(template, defs); |
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code = code.toString() |
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.replace(OUT_EMPTY_STRING, '') |
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.replace(FUNCTION_NAME, 'function generate_' + keyword + '(it, $keyword, $ruleType) {') |
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.replace(ISTANBUL, '/* $1 */'); |
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removeAlwaysFalsyInOr(); |
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VARS.forEach(removeUnusedVar); |
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code = "'use strict';\nmodule.exports = " + code; |
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code = beautify(code, { indent_size: 2 }) + '\n'; |
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fs.writeFileSync(targetPath, code); |
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console.log('compiled', keyword); |
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function removeUnusedVar(v) { |
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v = v.replace(/\$/g, '\\$$'); |
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var regexp = new RegExp(v + '[^A-Za-z0-9_$]', 'g'); |
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var count = occurrences(regexp); |
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if (count == 1) { |
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regexp = new RegExp('var\\s+' + v + '\\s*=[^;]+;|var\\s+' + v + ';'); |
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code = code.replace(regexp, ''); |
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} |
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} |
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function removeAlwaysFalsyInOr() { |
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var countUsed = occurrences(ERROR_KEYWORD); |
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var countOr = occurrences(ERROR_KEYWORD_OR); |
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if (countUsed == countOr + 1) code = code.replace(ERROR_KEYWORD_OR, ''); |
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} |
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function occurrences(regexp) { |
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return (code.match(regexp) || []).length; |
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} |
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});
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