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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 /// Script to create boilerplate for a Polymer element. |
| 6 /// Produces new .html entry point for a polymer app and updates the |
| 7 /// pubspec.yaml to reflect it. |
| 8 /// |
| 9 /// Run this script with pub run: |
| 10 /// |
| 11 /// pub run polymer:new_entry <html_file> |
| 12 /// |
| 13 library polymer.bin.new_entry; |
| 14 |
| 15 import 'dart:io'; |
| 16 import 'package:args/args.dart'; |
| 17 import 'package:path/path.dart' as path; |
| 18 import 'package:yaml/yaml.dart'; |
| 19 import 'package:source_span/source_span.dart'; |
| 20 |
| 21 void printUsage() { |
| 22 print('pub run polymer:new_entry entry_point_file.html'); |
| 23 } |
| 24 |
| 25 void main(List<String> args) { |
| 26 var parser = new ArgParser(allowTrailingOptions: true); |
| 27 parser.addFlag('help', abbr: 'h'); |
| 28 var entryPoint; |
| 29 |
| 30 try { |
| 31 var options = parser.parse(args); |
| 32 if (options['help']) { |
| 33 printUsage(); |
| 34 return; |
| 35 } |
| 36 entryPoint = options.rest[0]; |
| 37 } catch (e) { |
| 38 print('$e\n'); |
| 39 printUsage(); |
| 40 exitCode = 1; |
| 41 return; |
| 42 } |
| 43 |
| 44 // If the entrypoint file has no extension, add .html to it. |
| 45 if (path.extension(entryPoint) == '') { |
| 46 entryPoint = '${entryPoint}.html'; |
| 47 } |
| 48 |
| 49 var outputDir = path.dirname(entryPoint); |
| 50 var outputDirLocation = new Directory(outputDir); |
| 51 |
| 52 if (!outputDirLocation.existsSync()) { |
| 53 outputDirLocation.createSync(recursive: true); |
| 54 } |
| 55 |
| 56 outputDir = outputDirLocation.resolveSymbolicLinksSync(); |
| 57 var pubspecDir = _findDirWithFile(outputDir, 'pubspec.yaml'); |
| 58 |
| 59 if (pubspecDir == null) { |
| 60 print('Could not find pubspec.yaml when walking up from $outputDir'); |
| 61 exitCode = 1; |
| 62 return; |
| 63 } |
| 64 |
| 65 var relativeEntryPoint = path.relative( |
| 66 path.join(outputDir, path.basename(entryPoint)), from: pubspecDir); |
| 67 |
| 68 try { |
| 69 if (_createBoilerPlate(relativeEntryPoint, pubspecDir)) { |
| 70 print('Added $entryPoint to ${path.join(pubspecDir, "pubspec.yaml")}'); |
| 71 } |
| 72 print('Successfully created:'); |
| 73 print(' ' + path.join(pubspecDir, entryPoint)); |
| 74 } catch (e, t) { |
| 75 print('Exception: $e\n$t'); |
| 76 print('Error creating files in $outputDir'); |
| 77 exitCode = 1; |
| 78 } |
| 79 |
| 80 return; |
| 81 } |
| 82 |
| 83 String _findDirWithFile(String dir, String filename) { |
| 84 while (!new File(path.join(dir, filename)).existsSync()) { |
| 85 var parentDir = path.dirname(dir); |
| 86 // If we reached root and failed to find it, bail. |
| 87 if (parentDir == dir) return null; |
| 88 dir = parentDir; |
| 89 } |
| 90 return dir; |
| 91 } |
| 92 |
| 93 // Returns true if the pubspec file was modified. It might not be modified if |
| 94 // there was a monolithic polymer transformer in the pubspec, or if the entry |
| 95 // point for some reason already existed in the pubspec. |
| 96 bool _createBoilerPlate(String entryPoint, String pubspecDir) { |
| 97 String html = ''' |
| 98 <!doctype html> |
| 99 <html> |
| 100 <head> |
| 101 <!-- link rel="import" href="path_to_html_import.html" --> |
| 102 </head> |
| 103 <body> |
| 104 <!-- HTML for body here --> |
| 105 <script type="application/dart">export 'package:polymer/init.dart';</script> |
| 106 </body> |
| 107 </html> |
| 108 '''; |
| 109 |
| 110 new File(path.join(pubspecDir, entryPoint)).writeAsStringSync(html); |
| 111 |
| 112 var pubspecPath = path.join(pubspecDir, 'pubspec.yaml'); |
| 113 var pubspecText = new File(pubspecPath).readAsStringSync(); |
| 114 var transformers = loadYaml(pubspecText)['transformers']; |
| 115 var entryPoints; |
| 116 |
| 117 var insertionPoint; |
| 118 var textToInsert = ''; |
| 119 |
| 120 if (transformers != null) { |
| 121 // If there are transformers in the pubspec, look for the polymer |
| 122 // transformers, get the entry points, and delete the old entry points. |
| 123 SourceSpan transformersSourceSpan = transformers.span; |
| 124 |
| 125 SourceSpan polymerTransformerSourceSpan; |
| 126 SourceSpan entryPointsSourceSpan; |
| 127 for (var e in transformers) { |
| 128 if (e == 'polymer') { |
| 129 // If they had an empty polymer transformer, just get rid of it (we will |
| 130 // replace it with our own map style one). |
| 131 var polymerRegex = new RegExp(r'\n\s*-\spolymer\s*'); |
| 132 // Insert right after the newline. |
| 133 insertionPoint = pubspecText.indexOf(polymerRegex) + 1; |
| 134 pubspecText = pubspecText.replaceFirst(polymerRegex, '\n'); |
| 135 } else if (e is YamlMap && e['polymer'] != null) { |
| 136 polymerTransformerSourceSpan = e['polymer'].span; |
| 137 |
| 138 var existing = e['polymer']['entry_points']; |
| 139 if (existing == null && e['polymer'].containsKey('entry_points')) { |
| 140 if (path.split(entryPoint)[0] != 'web') { |
| 141 print('WARNING: Did not add entry_point $entryPoint to pubspec.yaml' |
| 142 ' because of existing empty `entry_points` field in polymer' |
| 143 ' transformer. This defaults to treating all files under `web/`' |
| 144 ' as entry points, but you tried to add an entry point outside' |
| 145 ' of the `web/` folder. You will need to explicitly list all' |
| 146 ' entrypoints that you care about into your pubspec in order to' |
| 147 ' include any outside of `web/`.'); |
| 148 } |
| 149 return false; |
| 150 } |
| 151 entryPoints = (existing == null |
| 152 ? [] |
| 153 : (existing is String ? [existing] : existing.toList())); |
| 154 |
| 155 if (entryPoints.contains(entryPoint)) return false; |
| 156 entryPoints.add(entryPoint); |
| 157 |
| 158 if (existing != null) { |
| 159 entryPointsSourceSpan = existing.span; |
| 160 } |
| 161 } |
| 162 } |
| 163 |
| 164 if (polymerTransformerSourceSpan == null) { |
| 165 if (insertionPoint == null) { |
| 166 insertionPoint = transformersSourceSpan.start.offset; |
| 167 } |
| 168 textToInsert = '- polymer:\n entry_points:\n'; |
| 169 } else if (entryPointsSourceSpan == null) { |
| 170 insertionPoint = polymerTransformerSourceSpan.start.offset; |
| 171 textToInsert = ' entry_points:\n'; |
| 172 } else { |
| 173 insertionPoint = entryPointsSourceSpan.start.offset; |
| 174 pubspecText = '${pubspecText.substring(0, insertionPoint)}' |
| 175 '${pubspecText.substring(entryPointsSourceSpan.end.offset)}'; |
| 176 } |
| 177 } else { |
| 178 // There were no transformers at all. |
| 179 insertionPoint = pubspecText.length; |
| 180 var optionalNewline = pubspecText.endsWith('\n') ? '' : '\n'; |
| 181 textToInsert = ''' |
| 182 ${optionalNewline}transformers: |
| 183 - polymer: |
| 184 entry_points: |
| 185 '''; |
| 186 entryPoints = [entryPoint]; |
| 187 } |
| 188 |
| 189 if (entryPoints == null) entryPoints = [entryPoint]; |
| 190 // TODO(dgrove): Once dartbug.com/20409 is addressed, use that here. |
| 191 var entryPointsText = entryPoints.map((e) => ' - $e').join('\n'); |
| 192 |
| 193 textToInsert += entryPointsText; |
| 194 if (insertionPoint == pubspecText.length) { |
| 195 pubspecText = '${pubspecText}${textToInsert}'; |
| 196 } else { |
| 197 pubspecText = '${pubspecText.substring(0, insertionPoint)}' |
| 198 '${textToInsert}\n${pubspecText.substring(insertionPoint)}'; |
| 199 } |
| 200 |
| 201 _writePubspec(pubspecPath, pubspecText); |
| 202 return true; |
| 203 } |
| 204 |
| 205 _writePubspec(String pubspecPath, String text) { |
| 206 new File(pubspecPath).writeAsStringSync(text); |
| 207 } |
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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