angular-cn/tools/build/dartanalyzer.js

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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(/\[hint\]/)) {
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);
});
}
};
};