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1 #!/usr/bin/env dart | 1 #!/usr/bin/env dart |
2 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 2 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
3 // for details. All rights reserved. Use of this source code is governed by a | 3 // for details. All rights reserved. Use of this source code is governed by a |
4 // BSD-style license that can be found in the LICENSE file. | 4 // BSD-style license that can be found in the LICENSE file. |
5 | 5 |
6 /** | 6 /** |
7 * This script uses the extract_messages.dart library to find the Intl.message | 7 * This script uses the extract_messages.dart library to find the Intl.message |
8 * calls in the target dart files and produces intl_messages.json containing the | 8 * calls in the target dart files and produces intl_messages.json containing the |
9 * information on those messages. It uses the analyzer-experimental parser | 9 * information on those messages. It uses the analyzer-experimental parser |
10 * to find the information. | 10 * to find the information. |
11 * | 11 * |
12 * This is intended to test the basic functioning of extracting messages and | 12 * This is intended to test the basic functioning of extracting messages and |
13 * serve as an example for how a program to extract them to a translation | 13 * serve as an example for how a program to extract them to a translation |
14 * file format could work. In the tests, this file is then run through a | 14 * file format could work. In the tests, this file is then run through a |
15 * simulated translation and the results of that are used to generate code. See | 15 * simulated translation and the results of that are used to generate code. See |
16 * message_extraction_test.dart | 16 * message_extraction_test.dart |
17 * | 17 * |
18 * If the environment variable INTL_MESSAGE_OUTPUT is set then it will use | 18 * If the environment variable INTL_MESSAGE_OUTPUT is set then it will use |
19 * that as the output directory, otherwise it will use the working directory. | 19 * that as the output directory, otherwise it will use the working directory. |
20 */ | 20 */ |
21 library extract_to_json; | 21 library extract_to_json; |
22 | 22 |
| 23 import 'dart:convert'; |
23 import 'dart:io'; | 24 import 'dart:io'; |
24 import 'package:intl/extract_messages.dart'; | 25 import 'package:intl/extract_messages.dart'; |
25 import 'dart:json' as json; | |
26 import 'package:path/path.dart' as path; | 26 import 'package:path/path.dart' as path; |
27 import 'package:intl/src/intl_message.dart'; | 27 import 'package:intl/src/intl_message.dart'; |
28 import 'package:args/args.dart'; | 28 import 'package:args/args.dart'; |
29 | 29 |
30 main() { | 30 main() { |
31 var args = new Options().arguments; | 31 var args = new Options().arguments; |
32 var targetDir; | 32 var targetDir; |
33 var parser = new ArgParser(); | 33 var parser = new ArgParser(); |
34 parser.addFlag("suppress-warnings", defaultsTo: false, | 34 parser.addFlag("suppress-warnings", defaultsTo: false, |
35 callback: (x) => suppressWarnings = x); | 35 callback: (x) => suppressWarnings = x); |
36 parser.addFlag("warnings-are-errors", defaultsTo: false, | 36 parser.addFlag("warnings-are-errors", defaultsTo: false, |
37 callback: (x) => warningsAreErrors = x); | 37 callback: (x) => warningsAreErrors = x); |
38 | 38 |
39 parser.addOption("output-dir", defaultsTo: '.', | 39 parser.addOption("output-dir", defaultsTo: '.', |
40 callback: (value) => targetDir = value); | 40 callback: (value) => targetDir = value); |
41 parser.parse(args); | 41 parser.parse(args); |
42 if (args.length == 0) { | 42 if (args.length == 0) { |
43 print('Usage: extract_to_json [--output-dir=<dir>] [files.dart]'); | 43 print('Usage: extract_to_json [--output-dir=<dir>] [files.dart]'); |
44 print('Accepts Dart files and produces intl_messages.json'); | 44 print('Accepts Dart files and produces intl_messages.json'); |
45 exit(0); | 45 exit(0); |
46 } | 46 } |
47 var allMessages = []; | 47 var allMessages = []; |
48 for (var arg in args.where((x) => x.contains(".dart"))) { | 48 for (var arg in args.where((x) => x.contains(".dart"))) { |
49 var messages = parseFile(new File(arg)); | 49 var messages = parseFile(new File(arg)); |
50 messages.forEach((k, v) => allMessages.add(toJson(v))); | 50 messages.forEach((k, v) => allMessages.add(toJson(v))); |
51 } | 51 } |
52 var file = new File(path.join(targetDir, 'intl_messages.json')); | 52 var file = new File(path.join(targetDir, 'intl_messages.json')); |
53 file.writeAsStringSync(json.stringify(allMessages)); | 53 file.writeAsStringSync(JSON.encode(allMessages)); |
54 if (hasWarnings && warningsAreErrors) { | 54 if (hasWarnings && warningsAreErrors) { |
55 exit(1); | 55 exit(1); |
56 } | 56 } |
57 } | 57 } |
58 | 58 |
59 /** | 59 /** |
60 * This is a placeholder for transforming a parameter substitution from | 60 * This is a placeholder for transforming a parameter substitution from |
61 * the translation file format into a Dart interpolation. In our case we | 61 * the translation file format into a Dart interpolation. In our case we |
62 * store it to the file in Dart interpolation syntax, so the transformation | 62 * store it to the file in Dart interpolation syntax, so the transformation |
63 * is trivial. | 63 * is trivial. |
64 */ | 64 */ |
65 String leaveTheInterpolationsInDartForm(MainMessage msg, chunk) { | 65 String leaveTheInterpolationsInDartForm(MainMessage msg, chunk) { |
66 if (chunk is String) return chunk; | 66 if (chunk is String) return chunk; |
67 if (chunk is int) return "\$${msg.arguments[chunk]}"; | 67 if (chunk is int) return "\$${msg.arguments[chunk]}"; |
68 return chunk.toCode(); | 68 return chunk.toCode(); |
69 } | 69 } |
70 | 70 |
71 /** | 71 /** |
72 * Convert the [MainMessage] to a trivial JSON format. | 72 * Convert the [MainMessage] to a trivial JSON format. |
73 */ | 73 */ |
74 Map toJson(MainMessage message) { | 74 Map toJson(MainMessage message) { |
75 var result = new Map<String, Object>(); | 75 var result = new Map<String, Object>(); |
76 for (var attribute in message.attributeNames) { | 76 for (var attribute in message.attributeNames) { |
77 result[attribute] = message[attribute]; | 77 result[attribute] = message[attribute]; |
78 } | 78 } |
79 result["message"] = message.expanded(leaveTheInterpolationsInDartForm); | 79 result["message"] = message.expanded(leaveTheInterpolationsInDartForm); |
80 return result; | 80 return result; |
81 } | 81 } |
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