A simple script to quickly set up Sublime Text 2 to use it in Gnome 3

setup_sublime_text_2.rb

#!/usr/bin/env ruby

# A simple script to quickly set up Sublime Text 2 to use it in Gnome 3.
#
# It will:
#  * copy the official Sublime icons into your ~/.local/share/icons/hicolor/[...]
#  * make a symlink to sublime_text in your ~/bin/
#  * create a sublime_text_2.desktop in ~/.local/share/applications/
#
# Licence: WTFPL

require 'fileutils'

USAGE = <<-end_usage
Usage:
  setup_sublime.rb <directory of sublime>

Example:
  setup_sublime.rb ~/software/Sublime\ Text\ 2/

end_usage

if ARGV[0].nil?
  puts USAGE
  raise ArgumentError, "missing directory argument"
end

DIR = ARGV[0]

unless File.directory?(DIR)
  puts USAGE
  raise ArgumentError, "You really need to tell me the directory Sublime Text is in."
end

SUBLIME_DOT_DESKTOP = <<-end_desktop_file
[Desktop Entry]
Categories=GNOME;GTK;Utility;TextEditor;Development;Utility;
Comment=Sublime Text Editor
Exec="sublime_text" %F
GenericName=Text Editor
Icon=sublime_text
MimeType=text/plain;text/x-web-markdown;text/x-chdr;text/x-csrc;text/x-c++hdr;text/x-c++src;text/x-java;text/x-dsrc;text/x-pascal;text/x-perl;text/x-python;application/x-php;application/x-httpd-php3;application/x-httpd-php4;application/x-httpd-php5;application/xml;text/html;text/css;text/x-sql;text/x-diff;x-directory/normal;inode/directory;
Name=Sublime Text Editor
StartupNotify=false
Terminal=false
Type=Application
end_desktop_file

def clean_icon_dir(dir)
  puts "clean_icon_dir #{dir}"
  FileUtils.cd(dir) do
    FileUtils.mkdir 'apps', :verbose => true
    FileUtils.mv Dir.glob('*.png'), 'apps', :verbose => true
  end
end

def install_icons
  icon = File.join DIR, "Icon"
  hicolor = File.join DIR, 'hicolor'

  FileUtils.rm_r hicolor, :noop => true
  FileUtils.cp_r icon, hicolor, :verbose => true

  Dir.glob(File.join(hicolor, '*')) do |f|
    clean_icon_dir(f) if File.directory?(f)
  end

  FileUtils.mkdir_p File.join(Dir.home, '.local', 'share', 'icons', 'hicolor')
  FileUtils.cp_r hicolor, File.join(Dir.home, '.local', 'share', 'icons'), :verbose => true
  FileUtils.rm_r hicolor, :verbose => true
end

def make_symlink
  # make symlink in ~/bin
  FileUtils.ln_s File.join(DIR, 'sublime_text'), File.join(Dir.home, 'bin'), :noop => true, :verbose => true
end

def write_desktop_file
  desktop_file = File.join(Dir.home, '.local', 'share', 'applications', 'sublime_text_2.desktop')
  File.open(desktop_file, 'w') do |f|
    f.write(SUBLIME_DOT_DESKTOP)
  end
  FileUtils.chmod('+x', desktop_file)
end

install_icons
make_symlink
write_desktop_file