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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 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. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library args.src.usage; | 5 library args.src.usage; |
6 | 6 |
7 import 'dart:math'; | 7 import 'dart:math'; |
8 | 8 |
9 import '../args.dart'; | 9 import '../args.dart'; |
10 | 10 |
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101 | 101 |
102 String getAbbreviation(Option option) { | 102 String getAbbreviation(Option option) { |
103 if (option.abbreviation != null) { | 103 if (option.abbreviation != null) { |
104 return '-${option.abbreviation}, '; | 104 return '-${option.abbreviation}, '; |
105 } else { | 105 } else { |
106 return ''; | 106 return ''; |
107 } | 107 } |
108 } | 108 } |
109 | 109 |
110 String getLongOption(Option option) { | 110 String getLongOption(Option option) { |
| 111 var result; |
111 if (option.negatable) { | 112 if (option.negatable) { |
112 return '--[no-]${option.name}'; | 113 result = '--[no-]${option.name}'; |
113 } else { | 114 } else { |
114 return '--${option.name}'; | 115 result = '--${option.name}'; |
115 } | 116 } |
| 117 |
| 118 if (option.valueHelp != null) result += "=<${option.valueHelp}>"; |
| 119 |
| 120 return result; |
116 } | 121 } |
117 | 122 |
118 String getAllowedTitle(String allowed) { | 123 String getAllowedTitle(String allowed) { |
119 return ' [$allowed]'; | 124 return ' [$allowed]'; |
120 } | 125 } |
121 | 126 |
122 void calculateColumnWidths() { | 127 void calculateColumnWidths() { |
123 int abbr = 0; | 128 int abbr = 0; |
124 int title = 0; | 129 int title = 0; |
125 args.options.forEach((name, option) { | 130 args.options.forEach((name, option) { |
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229 String padRight(String source, int length) { | 234 String padRight(String source, int length) { |
230 final result = new StringBuffer(); | 235 final result = new StringBuffer(); |
231 result.write(source); | 236 result.write(source); |
232 | 237 |
233 while (result.length < length) { | 238 while (result.length < length) { |
234 result.write(' '); | 239 result.write(' '); |
235 } | 240 } |
236 | 241 |
237 return result.toString(); | 242 return result.toString(); |
238 } | 243 } |
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