Add ability to build macOS app bundles

2 files changed, 64 insertions, 12 deletions

diff --git a/bin/ruby2d b/bin/ruby2d
index 39a8325..9a77ee8 100755
--- a/bin/ruby2d
+++ b/bin/ruby2d
@@ -20,16 +20,19 @@ Summary of commands and options:
   -v|--version  Prints the installed version\n\n"
 
 usage_build = "
-Use the #{"build".bold} command to compile or build Ruby 2D apps.
+Use the #{'build'.bold} command to compile or build Ruby 2D apps.
 
 To compile and create a native executable, use:
   build --native <ruby_file>
 
 To build for the web, creating a JavaScript and HTML package, use:
   build --web <ruby_file>
-  #{"Warning:".warn} #{"This feature is currently disabled while it's being upgraded.".bold}
+  #{'Warning:'.warn} #{"This feature is currently disabled while it's being upgraded.".bold}
 
-To build an iOS or tvOS app, use the following:
+To build a macOS app bundle, use:
+  build --macos <ruby_file>
+
+To build an iOS or tvOS app, use:
   build --ios <ruby_file>
   build --tvos <ruby_file>
 
@@ -39,11 +42,11 @@ To build for every platform supported by the current system, use:
 To clean up the build directory, use:
   build --clean
 
-Add the #{"--debug".bold} option to print debugging info
+Add the #{'--debug'.bold} option to print debugging info
 and keep all intermediate files generated.\n\n"
 
 usage_launch = "
-Use the #{"launch".bold} command to run a Ruby 2D app that has been built.
+Use the #{'launch'.bold} command to run a Ruby 2D app that has been built.
 Choose one of the following options to select the kind of app to run:
 
   --native
@@ -52,7 +55,7 @@ Choose one of the following options to select the kind of app to run:
   --tvos\n\n"
 
 usage_simulator = "
-Choose an option with the #{"simulator".bold} command:
+Choose an option with the #{'simulator'.bold} command:
 
   --list      List available devices
   --booted    Show currently booted devices
@@ -82,15 +85,17 @@ when 'build'
     build_native(ARGV[2])
   when '--web'
     build_web(ARGV[2])
+  when '--macos'
+    build_macos(ARGV[2])
   when '--ios'
-    build_apple(ARGV[2], 'ios')
+    build_ios_tvos(ARGV[2], 'ios')
   when '--tvos'
-    build_apple(ARGV[2], 'tvos')
+    build_ios_tvos(ARGV[2], 'tvos')
   when '--all'
     build_native(ARGV[2])
     build_web(ARGV[2])
-    build_apple(ARGV[2], 'ios')
-    build_apple(ARGV[2], 'tvos')
+    build_ios_tvos(ARGV[2], 'ios')
+    build_ios_tvos(ARGV[2], 'tvos')
   when '--clean'
     clean_up(:all)
   else
diff --git a/lib/ruby2d/cli/build.rb b/lib/ruby2d/cli/build.rb
index 92e68f7..72b80a4 100644
--- a/lib/ruby2d/cli/build.rb
+++ b/lib/ruby2d/cli/build.rb
@@ -114,8 +114,54 @@ def build_web(rb_file)
 end
 
 
+# Build an app bundle for macOS
+def build_macos(rb_file)
+
+  # Build native app for macOS
+  build_native(rb_file)
+
+  # Property list source for the bundle
+  info_plist = %(
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleExecutable</key>
+  <string>app</string>
+  <key>CFBundleIconFile</key>
+  <string>app.icns</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundlePackageType</key>
+  <string>APPL</string>
+  <key>CFBundleVersion</key>
+  <string>1</string>
+  <key>NSHighResolutionCapable</key>
+  <string>True</string>
+</dict>
+</plist>
+)
+
+  # Create directories
+  FileUtils.mkpath 'build/App.app/Contents/MacOS'
+  FileUtils.mkpath 'build/App.app/Contents/Resources'
+
+  # Create Info.plist and copy over assets
+  File.open('build/App.app/Contents/Info.plist', 'w') { |f| f.write(info_plist) }
+  FileUtils.cp 'build/app', 'build/App.app/Contents/MacOS/'
+  # Consider using an icon:
+  #   FileUtils.cp "#{@gem_dir}/assets/app.icns", 'build/App.app/Contents/Resources'
+
+  # Clean up
+  FileUtils.rm_f 'build/app' unless @debug
+
+  # Success!
+  puts 'macOS app bundle created: `build/App.app`'
+end
+
+
 # Build an iOS or tvOS app
-def build_apple(rb_file, device)
+def build_ios_tvos(rb_file, device)
   check_build_src_file(rb_file)
 
   # Check for Simple 2D framework,
@@ -160,7 +206,7 @@ def build_apple(rb_file, device)
   clean_up unless @debug
 
   # Success!
-  puts "App created at `build/#{device}`"
+  puts "App created: `build/#{device}`"
 end
 
 
@@ -175,6 +221,7 @@ def clean_up(cmd = nil)
     FileUtils.rm_f 'build/app'
     FileUtils.rm_f 'build/app.js'
     FileUtils.rm_f 'build/app.html'
+    FileUtils.rm_rf 'build/App.app'
     FileUtils.rm_rf 'build/ios'
     FileUtils.rm_rf 'build/tvos'
   end