Linter Demo

Errors: 3

Warnings: 13

File: /home/fstrocco/Dart/dart/benchmark/dartstyle/bin/format.dart

// 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:convert'; import 'dart:io'; import 'package:args/args.dart'; import 'package:dart_style/src/dart_formatter.dart'; import 'package:dart_style/src/formatter_exception.dart'; import 'package:dart_style/src/formatter_options.dart'; import 'package:dart_style/src/io.dart'; import 'package:dart_style/src/source_code.dart'; // Note: The following line of code is modified by tool/grind.dart. const version = "0.2.0+1"; void main(List<String> args) { var parser = new ArgParser(allowTrailingOptions: true); parser.addFlag("help", abbr: "h", negatable: false, help: "Shows usage information."); parser.addFlag("version", negatable: false, help: "Shows version information."); parser.addOption("line-length", abbr: "l", help: "Wrap lines longer than this.", defaultsTo: "80"); parser.addOption("preserve", help: 'Selection to preserve, formatted as "start:length".'); parser.addFlag("dry-run", abbr: "n", negatable: false, help: "Show which files would be modified but make no changes."); parser.addFlag("overwrite", abbr: "w", negatable: false, help: "Overwrite input files with formatted output."); parser.addFlag("machine", abbr: "m", negatable: false, help: "Produce machine-readable JSON output."); parser.addFlag("profile", negatable: false, help: "Display profile times after running."); parser.addFlag("follow-links", negatable: false, help: "Follow links to files and directories.\n" "If unset, links will be ignored."); parser.addFlag("transform", abbr: "t", negatable: false, help: "Unused flag for compability with the old formatter."); var argResults; try { argResults = parser.parse(args); } on FormatException catch (err) { usageError(parser, err.message); } if (argResults["help"]) { printUsage(parser); return; } if (argResults["version"]) { print(version); return; } // Can only preserve a selection when parsing from stdin. var selection; if (argResults["preserve"] != null && argResults.rest.isNotEmpty) { usageError(parser, "Can only use --preserve when reading from stdin."); } try { selection = parseSelection(argResults["preserve"]); } on FormatException catch (_) { usageError( parser, '--preserve must be a colon-separated pair of integers, was ' '"${argResults['preserve']}".'); } if (argResults["dry-run"] && argResults["overwrite"]) { usageError( parser, "Cannot use --dry-run and --overwrite at the same time."); } checkForReporterCollision(String chosen, String other) { if (!argResults[other]) return; usageError(parser, "Cannot use --$chosen and --$other at the same time."); } var reporter = OutputReporter.print; if (argResults["dry-run"]) { checkForReporterCollision("dry-run", "overwrite"); checkForReporterCollision("dry-run", "machine"); reporter = OutputReporter.dryRun; } else if (argResults["overwrite"]) { checkForReporterCollision("overwrite", "machine"); if (argResults.rest.isEmpty) { usageError(parser, "Cannot use --overwrite without providing any paths to format."); } reporter = OutputReporter.overwrite; } else if (argResults["machine"]) { reporter = OutputReporter.printJson; } if (argResults["profile"]) { reporter = new ProfileReporter(reporter); } var pageWidth; try { pageWidth = int.parse(argResults["line-length"]); } on FormatException catch (_) { usageError( parser, '--line-length must be an integer, was ' '"${argResults['line-length']}".'); } var followLinks = argResults["follow-links"]; var options = new FormatterOptions(reporter, pageWidth: pageWidth, followLinks: followLinks); if (argResults.rest.isEmpty) { formatStdin(options, selection); } else { formatPaths(options, argResults.rest); } if (argResults["profile"]) { (reporter as ProfileReporter).showProfile(); } } List<int> parseSelection(String selection) { if (selection == null) return null; var coordinates = selection.split(":"); if (coordinates.length != 2) { throw new FormatException( 'Selection should be a colon-separated pair of integers, "123:45".'); } return coordinates.map((coord) => coord.trim()).map(int.parse).toList(); } /// Reads input from stdin until it's closed, and the formats it. void formatStdin(FormatterOptions options, List<int> selection) { var selectionStart = 0; var selectionLength = 0; if (selection != null) { selectionStart = selection[0]; selectionLength = selection[1]; } var input = new StringBuffer(); stdin.transform(new Utf8Decoder()).listen(input.write, onDone: () { var formatter = new DartFormatter(pageWidth: options.pageWidth); try { options.reporter.beforeFile(null, "<stdin>"); var source = new SourceCode(input.toString(), uri: "stdin", selectionStart: selectionStart, selectionLength: selectionLength); var output = formatter.formatSource(source); options.reporter .afterFile(null, "<stdin>", output, changed: source != output); return true; } on FormatterException catch (err) { stderr.writeln(err.message()); exitCode = 65; // sysexits.h: EX_DATAERR } catch (err, stack) { stderr.writeln('''Hit a bug in the formatter when formatting stdin. Please report at: github.com/dart-lang/dart_style/issues $err $stack'''); exitCode = 70; // sysexits.h: EX_SOFTWARE } }); } /// Formats all of the files and directories given by [paths]. void formatPaths(FormatterOptions options, List<String> paths) { for (var path in paths) { var directory = new Directory(path); if (directory.existsSync()) { if (!processDirectory(options, directory)) { exitCode = 65; } continue; } var file = new File(path); if (file.existsSync()) { if (!processFile(options, file)) { exitCode = 65; } } else { stderr.writeln('No file or directory found at "$path".'); } } } /// 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 = "Reformats whitespace in Dart source files."; if (error != null) { message = error; output = stdout; } output.write("""$message Usage: dartfmt [-n|-w] [files or directories...] ${parser.usage} """); }