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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 library dart_style.src.formatter_options; | |
| 6 | |
| 7 import 'dart:convert'; | |
| 8 import 'dart:io'; | |
| 9 | |
| 10 import 'source_code.dart'; | |
| 11 | |
| 12 /// Global options that affect how the formatter produces and uses its outputs. | |
| 13 class FormatterOptions { | |
| 14 /// The [OutputReporter] used to show the formatting results. | |
| 15 final OutputReporter reporter; | |
| 16 | |
| 17 /// The number of columns that formatted output should be constrained to fit | |
| 18 /// within. | |
| 19 final int pageWidth; | |
| 20 | |
| 21 /// Whether symlinks should be traversed when formatting a directory. | |
| 22 final bool followLinks; | |
| 23 | |
| 24 FormatterOptions(this.reporter, | |
| 25 {this.pageWidth: 80, this.followLinks: false}); | |
| 26 } | |
| 27 | |
| 28 /// How the formatter reports the results it produces. | |
| 29 abstract class OutputReporter { | |
| 30 /// Prints only the names of files whose contents are different from their | |
| 31 /// formatted version. | |
| 32 static final dryRun = new _DryRunReporter(); | |
| 33 | |
| 34 /// Prints the formatted results of each file to stdout. | |
| 35 static final print = new _PrintReporter(); | |
| 36 | |
| 37 /// Prints the formatted result and selection info of each file to stdout as | |
| 38 /// a JSON map. | |
| 39 static final printJson = new _PrintJsonReporter(); | |
| 40 | |
| 41 /// Overwrites each file with its formatted result. | |
| 42 static final overwrite = new _OverwriteReporter(); | |
| 43 | |
| 44 /// Describe the directory whose contents are about to be processed. | |
| 45 void showDirectory(String path) {} | |
| 46 | |
| 47 /// Describe the symlink at [path] that wasn't followed. | |
| 48 void showSkippedLink(String path) {} | |
| 49 | |
| 50 /// Describe the hidden file at [path] that wasn't processed. | |
| 51 void showHiddenFile(String path) {} | |
| 52 | |
| 53 /// Describe the processed file at [path] whose formatted result is [output]. | |
| 54 /// | |
| 55 /// If the contents of the file are the same as the formatted output, | |
| 56 /// [changed] will be false. | |
| 57 void showFile(File file, String label, SourceCode output, {bool changed}); | |
| 58 } | |
| 59 | |
| 60 /// Prints only the names of files whose contents are different from their | |
| 61 /// formatted version. | |
| 62 class _DryRunReporter extends OutputReporter { | |
| 63 void showFile(File file, String label, SourceCode output, {bool changed}) { | |
| 64 // Only show the changed files. | |
| 65 if (changed) print(label); | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 /// Prints the formatted results of each file to stdout. | |
| 70 class _PrintReporter extends OutputReporter { | |
| 71 void showDirectory(String path) { | |
| 72 print("Formatting directory $path:"); | |
| 73 } | |
| 74 | |
| 75 void showSkippedLink(String path) { | |
| 76 print("Skipping link $path"); | |
| 77 } | |
| 78 | |
| 79 void showHiddenFile(String path) { | |
| 80 print("Skipping hidden file $path"); | |
| 81 } | |
| 82 | |
| 83 void showFile(File file, String label, SourceCode output, {bool changed}) { | |
| 84 // Don't add an extra newline. | |
| 85 stdout.write(output.text); | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 /// Prints the formatted result and selection info of each file to stdout as a | |
| 90 /// JSON map. | |
| 91 class _PrintJsonReporter extends OutputReporter { | |
| 92 void showFile(File file, String label, SourceCode output, {bool changed}) { | |
| 93 // TODO(rnystrom): Put an empty selection in here to remain compatible with | |
| 94 // the old formatter. Since there's no way to pass a selection on the | |
| 95 // command line, this will never be used, which is why it's hard-coded to | |
| 96 // -1, -1. If we add support for passing in a selection, put the real | |
| 97 // result here. | |
| 98 print(JSON.encode({ | |
| 99 "path": label, | |
| 100 "source": output.text, | |
| 101 "selection": { | |
| 102 "offset": output.selectionStart != null ? output.selectionStart : -1, | |
| 103 "length": output.selectionLength != null ? output.selectionLength : -1 | |
| 104 } | |
| 105 })); | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 /// Overwrites each file with its formatted result. | |
| 110 class _OverwriteReporter extends _PrintReporter { | |
| 111 void showFile(File file, String label, SourceCode output, {bool changed}) { | |
| 112 if (changed) { | |
| 113 file.writeAsStringSync(output.text); | |
| 114 print("Formatted $label"); | |
| 115 } else { | |
| 116 print("Unchanged $label"); | |
| 117 } | |
| 118 } | |
| 119 } | |
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Chromium Code Reviews
Issue 1400473008:
Roll Observatory packages and add a roll script (Closed)
Base URL: git@github.com:dart-lang/observatory_pub_packages.git@master