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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 2312183003:
Removed Polymer from Observatory deps (Closed)
