Split the project into smaller files (#16)

bin/pubver.dart

@@ -3,4 +3,4 @@ import 'dart:io';
 import 'package:pubspec_version/pubspec_version.dart';
 
 void main(List<String> args) async =>
-    exit(await App(Console.stdio()).run(args));
+    exit(await Application(Console.stdio()).run(args));

lib/pubspec_version.dart

@@ -1,118 +1,2 @@
-import 'dart:async';
-import 'dart:io';
-
-import 'package:args/command_runner.dart';
-import 'package:pub_semver/pub_semver.dart';
-import 'package:pubspec/pubspec.dart';
-
-class App {
-  final Console console;
-
-  App(this.console);
-
-  Future<int> run(List<String> args) async {
-    final bumpers = [
-      Bumper('breaking', 'Bumps the version to the next breaking.', console),
-      Bumper('major', 'Bumps the major version.', console),
-      Bumper('minor', 'Bumps the minor version.', console),
-      Bumper('patch', 'Bumps the patch version.', console),
-    ];
-    final commandRunner =
-        await CommandRunner('pubver', 'Package version manager.')
-          ..addCommand(BumpVersion(bumpers))
-          ..addCommand(SetVersion(console))
-          ..addCommand(GetVersion(console))
-          ..argParser.addOption('pubspec-dir',
-              abbr: 'd',
-              help: 'Directory containing pubspec.yaml.',
-              defaultsTo: '.');
-
-    try {
-      await commandRunner.run(args);
-      return 0;
-    } on UsageException catch (e) {
-      console.error(e.toString());
-      return 64;
-    }
-  }
-}
-
-class Bumper extends UpdateVersion {
-  final String name;
-  final String description;
-
-  Bumper(this.name, this.description, Console c) : super(c);
-
-  Version nextVersion(Version v) => {
-        'breaking': () => v.nextBreaking,
-        'major': () => v.nextMajor,
-        'minor': () => v.nextMinor,
-        'patch': () => v.nextPatch,
-      }[name]();
-}
-
-class Console {
-  final Stdout _output;
-  final Stdout _error;
-
-  Console(this._output, this._error);
-
-  Console.stdio() : this(stdout, stderr);
-
-  void error(Object e) => _error.writeln(e);
-
-  void log(Object message) => _output.writeln(message);
-}
-
-class BumpVersion<T> extends Command<T> {
-  final name = 'bump';
-  final description = 'Bumps the package version.';
-
-  BumpVersion(List<Command<T>> subcommands) {
-    subcommands.forEach(addSubcommand);
-  }
-}
-
-class SetVersion extends UpdateVersion {
-  final name = 'set';
-  final description = 'Sets the package version.';
-
-  SetVersion(Console c) : super(c);
-
-  Version nextVersion(Version v) {
-    if (globalResults.arguments.length < 2)
-      throw UsageException('Please provide the version', 'Example: set 3.2.1');
-    return Version.parse(globalResults.arguments[1]);
-  }
-}
-
-abstract class UpdateVersion extends Command {
-  final Console console;
-
-  UpdateVersion(this.console);
-
-  Future run() async {
-    final dir = Directory(globalResults['pubspec-dir']);
-    final pubSpec = await PubSpec.load(dir);
-    final version = nextVersion(pubSpec.version);
-    await pubSpec.copy(version: version).save(dir);
-    console.log(version.toString());
-  }
-
-  Version nextVersion(Version v);
-}
-
-class GetVersion extends Command {
-  final Console console;
-  final name = 'get';
-  final description = 'Gets the current package version.';
-
-  GetVersion(this.console);
-
-  @override
-  Future run() async {
-    final dir = Directory(globalResults['pubspec-dir']);
-    final pubSpec = await PubSpec.load(dir);
-    console.log(pubSpec.version.toString());
-  }
-}
+export 'package:pubspec_version/src/application.dart';
+export 'package:pubspec_version/src/console.dart';

lib/src/application.dart

@@ -0,0 +1,40 @@
+import 'dart:async';
+
+import 'package:args/command_runner.dart';
+import 'package:pubspec_version/src/bump_version.dart';
+import 'package:pubspec_version/src/bumper.dart';
+import 'package:pubspec_version/src/console.dart';
+import 'package:pubspec_version/src/get_version.dart';
+import 'package:pubspec_version/src/set_version.dart';
+
+class Application {
+  final Console console;
+
+  Application(this.console);
+
+  Future<int> run(List<String> args) async {
+    final bumpers = [
+      Bumper('breaking', 'Bumps the version to the next breaking.', console),
+      Bumper('major', 'Bumps the major version.', console),
+      Bumper('minor', 'Bumps the minor version.', console),
+      Bumper('patch', 'Bumps the patch version.', console),
+    ];
+    final commandRunner =
+        await CommandRunner('pubver', 'Package version manager.')
+          ..addCommand(BumpVersion(bumpers))
+          ..addCommand(SetVersion(console))
+          ..addCommand(GetVersion(console))
+          ..argParser.addOption('pubspec-dir',
+              abbr: 'd',
+              help: 'Directory containing pubspec.yaml.',
+              defaultsTo: '.');
+
+    try {
+      await commandRunner.run(args);
+      return 0;
+    } on UsageException catch (e) {
+      console.error(e.toString());
+      return 64;
+    }
+  }
+}

lib/src/bump_version.dart

@@ -0,0 +1,10 @@
+import 'package:args/command_runner.dart';
+
+class BumpVersion<T> extends Command<T> {
+  final name = 'bump';
+  final description = 'Bumps the package version.';
+
+  BumpVersion(List<Command<T>> subcommands) {
+    subcommands.forEach(addSubcommand);
+  }
+}

lib/src/bumper.dart

@@ -0,0 +1,18 @@
+import 'package:pub_semver/pub_semver.dart';
+import 'package:pubspec_version/src/update_version.dart';
+
+import 'console.dart';
+
+class Bumper extends UpdateVersion {
+  final String name;
+  final String description;
+
+  Bumper(this.name, this.description, Console c) : super(c);
+
+  Version nextVersion(Version v) => {
+        'breaking': () => v.nextBreaking,
+        'major': () => v.nextMajor,
+        'minor': () => v.nextMinor,
+        'patch': () => v.nextPatch,
+      }[name]();
+}

lib/src/console.dart

@@ -0,0 +1,19 @@
+import 'dart:io';
+
+/// A very simple Console output abstraction.
+/// Allows to print log messages and error messages.
+class Console {
+  final Stdout _output;
+  final Stdout _error;
+
+  /// Creates an instance with
+  const Console(this._output, this._error);
+
+  Console.stdio() : this(stdout, stderr);
+
+  /// Writes the [message] to the error sink
+  void error(Object message) => _error.writeln(message);
+
+  /// Writes the [message] the to the normal output sink
+  void log(Object message) => _output.writeln(message);
+}

lib/src/get_version.dart

@@ -0,0 +1,21 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:args/command_runner.dart';
+import 'package:pubspec/pubspec.dart';
+import 'package:pubspec_version/src/console.dart';
+
+class GetVersion extends Command {
+  final Console console;
+  final name = 'get';
+  final description = 'Gets the current package version.';
+
+  GetVersion(this.console);
+
+  @override
+  Future run() async {
+    final dir = Directory(globalResults['pubspec-dir']);
+    final pubSpec = await PubSpec.load(dir);
+    console.log(pubSpec.version.toString());
+  }
+}

lib/src/set_version.dart

@@ -0,0 +1,18 @@
+import 'package:args/command_runner.dart';
+import 'package:pub_semver/pub_semver.dart';
+import 'package:pubspec_version/src/console.dart';
+import 'package:pubspec_version/src/update_version.dart';
+
+class SetVersion extends UpdateVersion {
+  final name = 'set';
+  final description = 'Sets the package version.';
+
+  SetVersion(Console c) : super(c);
+
+  Version nextVersion(Version v) {
+    if (globalResults.arguments.length < 2) {
+      throw UsageException('Please provide the version', 'Example: set 3.2.1');
+    }
+    return Version.parse(globalResults.arguments[1]);
+  }
+}

lib/src/update_version.dart

@@ -0,0 +1,23 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:args/command_runner.dart';
+import 'package:pub_semver/pub_semver.dart';
+import 'package:pubspec/pubspec.dart';
+import 'package:pubspec_version/src/console.dart';
+
+abstract class UpdateVersion extends Command {
+  final Console console;
+
+  UpdateVersion(this.console);
+
+  Future run() async {
+    final dir = Directory(globalResults['pubspec-dir']);
+    final pubSpec = await PubSpec.load(dir);
+    final version = nextVersion(pubSpec.version);
+    await pubSpec.copy(version: version).save(dir);
+    console.log(version.toString());
+  }
+
+  Version nextVersion(Version v);
+}

pubspec.yaml

@@ -11,6 +11,6 @@ dev_dependencies:
   mockito: "^3.0.0"
   test: "^1.0.0"
 environment: 
-  sdk: ">=2.0.0 <3.0.0"
+  sdk: ">=2.3.0 <3.0.0"
 executables: 
   pubver: "pubver"

test/functional_test.dart

@@ -10,7 +10,7 @@ class MockConsole extends Mock implements Console {}
 void main() {
   Directory temp;
   MockConsole mockConsole;
-  App app;
+  Application app;
 
   expectVersion(String v) async {
     expect((await PubSpec.load(Directory(temp.path))).version.toString(), v);
@@ -21,7 +21,7 @@ void main() {
     temp = await Directory.systemTemp.createTemp();
     File('test/pubspec_sample.yaml').copy('${temp.path}/pubspec.yaml');
     mockConsole = MockConsole();
-    app = App(mockConsole);
+    app = Application(mockConsole);
   });
 
   tearDown(() async {

test/pubspec_sample.yaml

@@ -1,13 +1,13 @@
 description: "A CLI tool to set/bump the `version` key in pubspec.yaml."
 name: "pubspec_version"
 version: "0.3.2"
-dependencies: 
+dependencies:
   args: "^1.5.0"
   pub_semver: "^1.4.2"
   pubspec: "^0.1.0"
-dev_dependencies: 
+dev_dependencies:
   test: "^1.0.0"
-environment: 
+environment:
   sdk: ">=2.0.0 <3.0.0"
-executables: 
-  pubspec-version: "pubspec-version"
+executables:
+  pubver: "pubver"