blob: dd251803dec76490dec564d105d33c0c1f01f939 [file] [log] [blame]
#!/usr/bin/env dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import 'dart:io';
import 'package:args/args.dart';
import 'package:analyzer_experimental/src/services/formatter_impl.dart';
const BINARY_NAME = 'dartfmt';
final argParser = _initArgParser();
void main() {
var options = argParser.parse(new Options().arguments);
if (options['help']) {
if ( {
} else {
_formatFiles(files) {
for (var file in files) {
_formatFile(path) {
var buffer = new StringBuffer();
var file = new File(path);
.transform(new StringDecoder())
.listen((data) => buffer.write(data),
onError: (error) => print('Error, could not open "$path"'),
onDone: () => print(_formatCU(buffer.toString())));
_formatStdin(options) {
_log('not supported yet!');
// stdin.transform(new StringDecoder())
// .listen((String data) => print(data),
// onError: (error) => print('Error reading from stdin'),
// onDone: () => print('Finished reading data'));
/// Initialize the arg parser instance.
ArgParser _initArgParser() {
// NOTE: these flags are placeholders only!
var parser = new ArgParser();
parser.addFlag('write', abbr: 'w', negatable: false,
help: 'Write reformatted sources to files (overwriting contents). '
'Do not print reformatted sources to standard output.');
parser.addFlag('help', abbr: 'h', negatable: false,
help: 'Print this usage information.');
return parser;
/// Displays usage information.
_printUsage() {
var buffer = new StringBuffer();
buffer..write('$BINARY_NAME formats Dart programs.')
..write('Without an explicit path, $BINARY_NAME processes the standard '
'input. Given a file, it operates on that file; given a '
'directory, it operates on all .dart files in that directory, '
'recursively. (Files starting with a period are ignored.) By '
'default, $BINARY_NAME prints the reformatted sources to '
'standard output.')
..write('Supported flags are:')
..write('Usage: $BINARY_NAME [flags] [path...]\n\n')
/// Format the given [src] as a compilation unit.
String _formatCU(src, {options: const FormatterOptions()}) =>
new CodeFormatter(options).format(CodeKind.COMPILATION_UNIT, src);
/// Log the given [msg].
_log(String msg) {
//TODO(pquitslund): add proper log support