add a --favicon flag

CHANGELOG.md

@@ -1,3 +1,7 @@
+## unreleased
+* [enhancement] added a `--favicon` option to specify a favicon to use for the
+  generated docs
+
 ## 0.9.3+1
 * [bug] fix an issue with including duplicated libraries
 

bin/dartdoc.dart

@@ -115,7 +115,8 @@ main(List<String> arguments) async {
   print('');
 
   var generators = await initGenerators(
-      url, headerFilePaths, footerFilePaths, args['rel-canonical-prefix']);
+      url, headerFilePaths, footerFilePaths, args['rel-canonical-prefix'],
+      faviconPath: args['favicon']);
 
   for (var generator in generators) {
     generator.onFileCreated.listen(_onProgress);
@@ -204,6 +205,8 @@ ArgParser _createArgsParser() {
           'Learn more at https://goo.gl/gktN6F.');
   parser.addFlag('include-source',
       help: 'Show source code blocks', negatable: true, defaultsTo: true);
+  parser.addOption('favicon',
+      help: 'A path to a favicon for the generated docs');
   return parser;
 }
 

lib/dartdoc.dart

@@ -45,14 +45,16 @@ final String defaultOutDir = p.join('doc', 'api');
 
 /// Initialize and setup the generators.
 Future<List<Generator>> initGenerators(String url, List<String> headerFilePaths,
-    List<String> footerFilePaths, String relCanonicalPrefix) async {
+    List<String> footerFilePaths, String relCanonicalPrefix,
+    {String faviconPath}) async {
   return [
     await HtmlGenerator.create(
         url: url,
         headers: headerFilePaths,
         footers: footerFilePaths,
         relCanonicalPrefix: relCanonicalPrefix,
-        toolVersion: version)
+        toolVersion: version,
+        faviconPath: faviconPath)
   ];
 }
 

lib/src/html/html_generator.dart

@@ -39,6 +39,7 @@ class HtmlGenerator extends Generator {
   final String _relCanonicalPrefix;
   final Templates _templates;
   final String _toolVersion;
+  final String faviconPath;
 
   final StreamController<File> _onFileCreated =
       new StreamController(sync: true);
@@ -51,23 +52,27 @@ class HtmlGenerator extends Generator {
       List<String> headers,
       List<String> footers,
       String relCanonicalPrefix,
-      String toolVersion}) async {
+      String toolVersion,
+      String faviconPath}) async {
     var templates =
         await Templates.create(headerPaths: headers, footerPaths: footers);
 
     if (toolVersion == null) {
       toolVersion = 'unknown';
     }
 
-    return new HtmlGenerator._(url, relCanonicalPrefix, templates, toolVersion);
+    return new HtmlGenerator._(url, relCanonicalPrefix, templates, toolVersion,
+        faviconPath: faviconPath);
   }
 
   HtmlGenerator._(
-      this._url, this._relCanonicalPrefix, this._templates, this._toolVersion);
+      this._url, this._relCanonicalPrefix, this._templates, this._toolVersion,
+      {this.faviconPath});
 
   Future generate(Package package, Directory out) {
     return new HtmlGeneratorInstance(_toolVersion, _url, _templates, package,
-            out, _onFileCreated, _relCanonicalPrefix)
+            out, _onFileCreated, _relCanonicalPrefix,
+            faviconPath: faviconPath)
         .generate();
   }
 }

lib/src/html/html_generator_instance.dart

@@ -24,20 +24,25 @@ class HtmlGeneratorInstance implements HtmlOptions {
   final StreamController<File> _onFileCreated;
   final String relCanonicalPrefix;
   final String toolVersion;
+  final String faviconPath;
 
   HtmlGeneratorInstance(this.toolVersion, this.url, this._templates,
-      this.package, this.out, this._onFileCreated, this.relCanonicalPrefix);
+      this.package, this.out, this._onFileCreated, this.relCanonicalPrefix,
+      {this.faviconPath});
 
   Future generate() async {
     if (!out.existsSync()) out.createSync();
 
     if (package != null) {
       _generateDocs();
       _generateSearchIndex();
-      // TODO: generate sitemap
     }
 
     await _copyResources();
+    if (faviconPath != null) {
+      File file = new File(path.join(out.path, 'static-assets', 'favicon.png'));
+      file.writeAsBytesSync(new File(faviconPath).readAsBytesSync());
+    }
   }
 
   void _generateSearchIndex() {