var Q = require('q'); var readline = require('readline'); var spawn = require('child_process').spawn; var path = require('path'); var glob = require('glob'); var fs = require('fs'); module.exports = function(gulp, plugins, config) { return function() { var dartModuleFolders = [].slice.call(glob.sync(config.dest + '/*')); var tempFile = '_analyzer.dart'; // analyze in parallel! return Q.all(dartModuleFolders.map(function(dir) { var srcFiles = [].slice.call(glob.sync(dir + '{/lib,/web}/**/*.dart', { cwd: dir })); var testFiles = [].slice.call(glob.sync('test/**/*_spec.dart', { cwd: dir })); var analyzeFile = ['library _analyzer;']; srcFiles.concat(testFiles).forEach(function(fileName, index) { if (fileName !== tempFile && fileName.indexOf("/packages/") === -1) { analyzeFile.push('import "./'+fileName+'" as mod'+index+';'); } }); fs.writeFileSync(path.join(dir, tempFile), analyzeFile.join('\n')); var defer = Q.defer(); analyze(dir, defer.makeNodeResolver()); return defer.promise; })); function analyze(dirName, done) { //TODO remove --package-warnings once dartanalyzer handles transitive libraries var stream = spawn(config.command, ['--fatal-warnings', '--package-warnings', tempFile], { // inherit stdin and stderr, but filter stdout stdio: [process.stdin, 'pipe', process.stderr], cwd: dirName }); // Filter out unused imports from our generated file. // We don't reexports from the generated file // as this could lead to name clashes when two files // export the same thing. var rl = readline.createInterface({ input: stream.stdout, output: process.stdout, terminal: false }); var hintCount = 0; var errorCount = 0; rl.on('line', function(line) { //TODO remove once dartanalyzer handles transitive libraries //skip errors in third-party packages if (line.indexOf(dirName) == -1) { return; } if (line.match(/Unused import/)) { return; } if (line.match(/\[info\]/)) { // Ignore [info] warnings return; } if (line.match(/\[hint\]/)) { hintCount++; } else { errorCount ++; } console.log(dirName + ':' + line); }); stream.on('close', function() { var error; if (errorCount > 0) { error = new Error('Dartanalyzer showed errors'); } if (hintCount > 0) { error = new Error('Dartanalyzer showed hints'); } done(error); }); } }; };