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