Add android_studio package (#3190)

Convert all file operations to use FileUtils

Check for free disk space

Add postinstall message about complete removal

Uncomment free disk space check

packages/android_studio.rb

+require 'package'
+
+class Android_studio < Package
+  description 'Android Studio is the official IDE for Android development.'
+  homepage 'https://developer.android.com/studio'
+  version '3.3.1.0'
+  source_url 'https://dl.google.com/dl/android/studio/ide-zips/3.3.1.0/android-studio-ide-182.5264788-linux.zip'
+  source_sha256 '82603100f772baf5b6b54532375ada756b4b2dc11854cabae267cd8bd8c4f039'
+
+  depends_on 'jdk8'
+  depends_on 'xdg_base'
+  depends_on 'sommelier'
+
+  abort 'Only x86_64 architecture is supported.'.lightred unless ARGV[0] == 'search' || ARCH == 'x86_64'
+
+  if ARGV[0] == 'install' || ARGV[0] == 'upgrade' then
+    free_space = `echo $(($(stat -f --format="%a*%S" .)))`.chomp
+    abort 'Not enough free disk space.  You need at least 6 GB to install.'.lightred if free_space < '6442450944'
+  end
+
+  def self.install
+    FileUtils.mkdir_p(CREW_DEST_PREFIX + '/share/android-studio')
+    FileUtils.cp_r('.', CREW_DEST_PREFIX + '/share/android-studio/')
+    FileUtils.mkdir_p(CREW_DEST_PREFIX + '/bin')
+    FileUtils.cd(CREW_DEST_PREFIX + '/bin') do
+      FileUtils.ln_s(CREW_PREFIX + '/share/android-studio/bin/studio.sh', 'studio')
+    end
+    FileUtils.mkdir_p(CREW_DEST_PREFIX + '/.config/.AndroidStudio3.3')
+    FileUtils.mkdir_p(CREW_DEST_PREFIX + '/.config/Android')
+    FileUtils.mkdir_p(CREW_DEST_HOME)
+    FileUtils.cd(CREW_DEST_HOME) do
+      FileUtils.ln_sf(CREW_PREFIX + '/.config/.AndroidStudio3.3/', '.AndroidStudio3.3')
+      FileUtils.ln_sf(CREW_PREFIX + '/.config/Android/', 'Android')
+    end
+  end
+
+  def self.postinstall
+    puts
+    puts 'To start using Android Studio, type `studio`.'.lightblue
+    puts
+    puts 'To completely remove Android Studio, including the'.lightblue
+    puts 'settings, SDK and tools, execute the following:'.lightblue
+    puts 'crew remove android_studio'.lightblue
+    puts "rm -rf #{CREW_PREFIX}/.config/Android".lightblue
+    puts "rm -rf #{CREW_PREFIX}/.config/.AndroidStudio3.3".lightblue
+    puts
+  end
+end