| // Copyright (c) 2015, 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:dart_style/src/cli/formatter_options.dart'; |
| import 'package:dart_style/src/cli/options.dart'; |
| import 'package:dart_style/src/cli/output.dart'; |
| import 'package:dart_style/src/cli/show.dart'; |
| import 'package:dart_style/src/cli/summary.dart'; |
| import 'package:dart_style/src/io.dart'; |
| import 'package:dart_style/src/style_fix.dart'; |
| |
| void main(List<String> args) { |
| var parser = ArgParser(allowTrailingOptions: true); |
| |
| defineOptions(parser, |
| oldCli: true, verbose: args.contains('--verbose') || args.contains('-v')); |
| |
| ArgResults argResults; |
| try { |
| argResults = parser.parse(args); |
| } on FormatException catch (err) { |
| usageError(parser, err.message); |
| } |
| |
| if (argResults['help']) { |
| printUsage(parser); |
| return; |
| } |
| |
| if (argResults['version']) { |
| print(dartStyleVersion); |
| return; |
| } |
| |
| if (argResults['verbose'] && !argResults['help']) { |
| usageError(parser, 'Can only use --verbose with --help.'); |
| } |
| |
| List<int> selection; |
| try { |
| selection = parseSelection(argResults, 'preserve'); |
| } on FormatException catch (exception) { |
| usageError(parser, exception.message); |
| } |
| |
| if (argResults['dry-run'] && argResults['overwrite']) { |
| usageError( |
| parser, 'Cannot use --dry-run and --overwrite at the same time.'); |
| } |
| |
| void checkForReporterCollision(String chosen, String other) { |
| if (!argResults[other]) return; |
| |
| usageError(parser, 'Cannot use --$chosen and --$other at the same time.'); |
| } |
| |
| var show = Show.legacy; |
| var summary = Summary.none; |
| var output = Output.show; |
| var setExitIfChanged = false; |
| if (argResults['dry-run']) { |
| checkForReporterCollision('dry-run', 'overwrite'); |
| checkForReporterCollision('dry-run', 'machine'); |
| |
| show = Show.dryRun; |
| output = Output.none; |
| } else if (argResults['overwrite']) { |
| checkForReporterCollision('overwrite', 'machine'); |
| |
| if (argResults.rest.isEmpty) { |
| usageError(parser, |
| 'Cannot use --overwrite without providing any paths to format.'); |
| } |
| |
| show = Show.overwrite; |
| output = Output.write; |
| } else if (argResults['machine']) { |
| output = Output.json; |
| } |
| |
| if (argResults['profile']) summary = Summary.profile(); |
| |
| setExitIfChanged = argResults['set-exit-if-changed']; |
| |
| int pageWidth; |
| try { |
| pageWidth = int.parse(argResults['line-length']); |
| } on FormatException catch (_) { |
| usageError( |
| parser, |
| '--line-length must be an integer, was ' |
| '"${argResults['line-length']}".'); |
| } |
| |
| int indent; |
| try { |
| indent = int.parse(argResults['indent']); |
| if (indent < 0 || indent.toInt() != indent) throw FormatException(); |
| } on FormatException catch (_) { |
| usageError( |
| parser, |
| '--indent must be a non-negative integer, was ' |
| '"${argResults['indent']}".'); |
| } |
| |
| var followLinks = argResults['follow-links']; |
| |
| var fixes = <StyleFix>[]; |
| if (argResults['fix']) fixes.addAll(StyleFix.all); |
| for (var fix in StyleFix.all) { |
| if (argResults['fix-${fix.name}']) { |
| if (argResults['fix']) { |
| usageError(parser, '--fix-${fix.name} is redundant with --fix.'); |
| } |
| |
| fixes.add(fix); |
| } |
| } |
| |
| if (argResults.wasParsed('stdin-name') && argResults.rest.isNotEmpty) { |
| usageError(parser, 'Cannot pass --stdin-name when not reading from stdin.'); |
| } |
| |
| var options = FormatterOptions( |
| indent: indent, |
| pageWidth: pageWidth, |
| followLinks: followLinks, |
| fixes: fixes, |
| show: show, |
| output: output, |
| summary: summary, |
| setExitIfChanged: setExitIfChanged); |
| |
| if (argResults.rest.isEmpty) { |
| formatStdin(options, selection, argResults['stdin-name'] as String); |
| } else { |
| formatPaths(options, argResults.rest); |
| } |
| |
| options.summary.show(); |
| } |
| |
| /// Prints [error] and usage help then exits with exit code 64. |
| void usageError(ArgParser parser, String error) { |
| printUsage(parser, error); |
| exit(64); |
| } |
| |
| void printUsage(ArgParser parser, [String error]) { |
| var output = stdout; |
| |
| var message = 'Idiomatically format Dart source code.'; |
| if (error != null) { |
| message = error; |
| output = stdout; |
| } |
| |
| output.write('''$message |
| |
| Usage: dartfmt [options...] [files or directories...] |
| |
| Example: dartfmt -w . |
| Reformats every Dart file in the current directory tree. |
| |
| ${parser.usage} |
| '''); |
| } |