From f47fe99199fdca6fd77da698e3cf8c2bc998fc5f Mon Sep 17 00:00:00 2001
From: Alexandre Roux <alex@tekartik.com>
Date: Thu, 20 Oct 2022 11:49:17 +0200
Subject: [PATCH] feat: add version display supports.

---
 README.md              | 1 +
 bin/dhttpd.dart        | 6 ++++++
 lib/src/options.dart   | 4 ++++
 lib/src/options.g.dart | 6 ++++++
 lib/src/version.dart   | 2 ++
 pubspec.yaml           | 1 +
 test/readme_test.dart  | 1 +
 7 files changed, 21 insertions(+)
 create mode 100644 lib/src/version.dart

diff --git a/README.md b/README.md
index 1bf30ff..41f2a31 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,7 @@ $ dhttpd --help
     --host=<host>    The hostname to listen on.
                      (defaults to "localhost")
 -h, --help           Displays the help.
+    --version        Prints the version of dhttpd.
 ```
 
 [path]: https://dart.dev/tools/pub/cmd/pub-global#running-a-script-from-your-path
diff --git a/bin/dhttpd.dart b/bin/dhttpd.dart
index aad82fb..d449477 100644
--- a/bin/dhttpd.dart
+++ b/bin/dhttpd.dart
@@ -2,6 +2,7 @@ import 'dart:io';
 
 import 'package:dhttpd/dhttpd.dart';
 import 'package:dhttpd/src/options.dart';
+import 'package:dhttpd/src/version.dart';
 
 Future<void> main(List<String> args) async {
   Options options;
@@ -19,6 +20,11 @@ Future<void> main(List<String> args) async {
     return;
   }
 
+  if (options.version) {
+    print(packageVersion);
+    return;
+  }
+
   await Dhttpd.start(
     path: options.path,
     port: options.port,
diff --git a/lib/src/options.dart b/lib/src/options.dart
index 98957fc..b723932 100644
--- a/lib/src/options.dart
+++ b/lib/src/options.dart
@@ -31,10 +31,14 @@ class Options {
   @CliOption(abbr: 'h', negatable: false, help: 'Displays the help.')
   final bool help;
 
+  @CliOption(negatable: false, help: 'Prints the version of dhttpd.')
+  final bool version;
+
   Options({
     required this.port,
     this.path,
     required this.host,
     required this.help,
+    required this.version,
   });
 }
diff --git a/lib/src/options.g.dart b/lib/src/options.g.dart
index d0ad260..daf91bf 100644
--- a/lib/src/options.g.dart
+++ b/lib/src/options.g.dart
@@ -25,6 +25,7 @@ Options _$parseOptionsResult(ArgResults result) => Options(
       path: result['path'] as String?,
       host: result['host'] as String,
       help: result['help'] as bool,
+      version: result['version'] as bool,
     );
 
 ArgParser _$populateOptionsParser(ArgParser parser) => parser
@@ -51,6 +52,11 @@ ArgParser _$populateOptionsParser(ArgParser parser) => parser
     abbr: 'h',
     help: 'Displays the help.',
     negatable: false,
+  )
+  ..addFlag(
+    'version',
+    help: 'Prints the version of dhttpd.',
+    negatable: false,
   );
 
 final _$parserForOptions = _$populateOptionsParser(ArgParser());
diff --git a/lib/src/version.dart b/lib/src/version.dart
new file mode 100644
index 0000000..072cbf4
--- /dev/null
+++ b/lib/src/version.dart
@@ -0,0 +1,2 @@
+// Generated code. Do not modify.
+const packageVersion = '4.0.2-dev';
diff --git a/pubspec.yaml b/pubspec.yaml
index e2771a0..9c9ccc1 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -17,6 +17,7 @@ dev_dependencies:
   build_cli: ^2.0.2
   build_runner: ^2.0.0
   build_verify: '>=2.0.0 <4.0.0'
+  build_version: ^2.1.1
   lints: ^1.0.0
   path: ^1.6.1
   test: ^1.3.0
diff --git a/test/readme_test.dart b/test/readme_test.dart
index ae3f36e..4622d08 100644
--- a/test/readme_test.dart
+++ b/test/readme_test.dart
@@ -29,6 +29,7 @@ $ dhttpd --help
     --host=<host>    The hostname to listen on.
                      (defaults to "localhost")
 -h, --help           Displays the help.
+    --version        Prints the version of dhttpd.
 ```''');
 
   expect(readme.readAsStringSync(), contains(expected));