gitkaste · November 13, 2010 09:04 · gitkaste · Nov 13, 2010 · gitkaste · Nov 13, 2010
diff --git a/install_homebrew.rb b/install_homebrew.rb
 #!/usr/bin/ruby
 #
 # I deliberately didn't DRY /usr/local references into a variable as this
 # script will not "just work" if you change the destination directory. However
 # please feel free to fork it and make that possible.
 #
 # If you do fork, please ensure you add a comment here that explains what the
 # changes are intended to do and how well you tested them.
 #
 # 30th March 2010:
 #   Added a check to make sure user is in the staff group. This was a problem
 #   for me, and I think it was due to me migrating my account over several
 #   versions of OS X. I cannot verify that for sure, and it was tested on
 #   10.6.2 using the Directory Service command line utility and my laptop.
 #
 #   My assumptions are:
 #     - you are running OS X 10.6.x
 #     - your machine is not managed as part of a group using networked
 #       Directory Services
 #     - you have not recently killed any baby seals or kittens
 #
 # 14th March 2010:
 #   Adapted CodeButler's fork: http://gist.github.com/331512
 #

 module Tty extend self
  def blue; bold 34; end
  def white; bold 39; end
  def red; underline 31; end
  def reset; escape 0; end
  def bold n; escape "1;#{n}" end
  def underline n; escape "4;#{n}" end
  def escape n; "\033[#{n}m" if STDOUT.tty? end
 end

 class Array
  def shell_s
    cp = dup
    first = cp.shift
    cp.map{ |arg| arg.gsub " ", "\\ " }.unshift(first) * " "
  end
 end

 def ohai *args
  puts "#{Tty.blue}==>#{Tty.white} #{args.shell_s}#{Tty.reset}"
 end

 def warn warning
  puts "#{Tty.red}Warning#{Tty.reset}: #{warning.chomp}"
 end

 alias :system_orig :system
 
 def system *args
  abort "Failed during: #{args.shell_s}" unless system_orig *args
 end

 def sudo *args
  args = if args.length > 1
    args.unshift "sudo"
  else
    "sudo #{args}"
  end
  ohai *args
  system *args
 end

 def getc  # NOTE only tested on OS X
  system "stty raw -echo"
  STDIN.getc
 ensure
  system "stty -raw echo"
 end

 ####################################################################### script
 abort "/usr/local/.git already exists!" if File.directory? "/usr/local/.git"
 abort "Don't run this as root!" if Process.uid == 0

 ohai "This script will install:"
 puts "/usr/local/bin/brew"
 puts "/usr/local/Library/Formula/..."
 puts "/usr/local/Library/Homebrew/..."

 chmods = %w(bin etc include lib sbin share var . share/locale share/man share/info share/doc share/aclocal).
            map{ |d| "/usr/local/#{d}" }.
            select{ |d| File.directory? d and not File.writable? d }
 chgrps = chmods.reject{ |d| File.stat(d).grpowned? }

 unless `groups`.split.include?("staff")
  ohai "The user #{`whoami`.strip} will be added to the staff group."
 end

 unless chmods.empty?
  ohai "The following directories will be made group writable:"
  puts *chmods
 end
 unless chgrps.empty?
  ohai "The following directories will have their group set to #{Tty.underline 39}staff#{Tty.reset}:"
  puts *chgrps
 end

 puts
 puts "Press enter to continue"
 abort unless getc == 13

 unless `groups`.split.include?("staff")
  sudo "dscl /Local/Default -append /Groups/staff GroupMembership #{`whoami`.strip}"
 end

 if File.directory? "/usr/local"
  sudo "/bin/chmod", "g+w", *chmods unless chmods.empty?
  # all admin users are in staff
  sudo "/usr/bin/chgrp", "staff", *chgrps unless chgrps.empty?
 else
  sudo "/bin/mkdir /usr/local"
  sudo "/bin/chmod g+w /usr/local"
  # the group is set to wheel by default for some reason
  sudo "/usr/bin/chgrp staff /usr/local"
 end

 Dir.chdir "/usr/local" do
  ohai "Downloading and Installing Homebrew..."
  # -m to stop tar erroring out if it can't modify the mtime for root owned directories
  system "/usr/bin/curl -sfL http://github.com/mxcl/homebrew/tarball/master | /usr/bin/tar xz -m --strip 1"
 end

 ohai "Installation successful!"

 if ENV['PATH'].split(':').include? '/usr/local/bin'
  puts "Yay! Now learn to brew:"
  puts
  puts "    brew help"
  puts
 else
  warn "/usr/local/bin is not in your PATH"
 end
	#!/usr/bin/ruby
	#
	# I deliberately didn't DRY /usr/local references into a variable as this
	# script will not "just work" if you change the destination directory. However
	# please feel free to fork it and make that possible.
	#
	# If you do fork, please ensure you add a comment here that explains what the
	# changes are intended to do and how well you tested them.
	#
	# 30th March 2010:
	# Added a check to make sure user is in the staff group. This was a problem
	# for me, and I think it was due to me migrating my account over several
	# versions of OS X. I cannot verify that for sure, and it was tested on
	# 10.6.2 using the Directory Service command line utility and my laptop.
	#
	# My assumptions are:
	# - you are running OS X 10.6.x
	# - your machine is not managed as part of a group using networked
	# Directory Services
	# - you have not recently killed any baby seals or kittens
	#
	# 14th March 2010:
	# Adapted CodeButler's fork: http://gist.github.com/331512
	#

	module Tty extend self
	def blue; bold 34; end
	def white; bold 39; end
	def red; underline 31; end
	def reset; escape 0; end
	def bold n; escape "1;#{n}" end
	def underline n; escape "4;#{n}" end
	def escape n; "\033[#{n}m" if STDOUT.tty? end
	end

	class Array
	def shell_s
	cp = dup
	first = cp.shift
	cp.map{ \|arg\| arg.gsub " ", "\\ " }.unshift(first) * " "
	end
	end

	def ohai *args
	puts "#{Tty.blue}==>#{Tty.white} #{args.shell_s}#{Tty.reset}"
	end

	def warn warning
	puts "#{Tty.red}Warning#{Tty.reset}: #{warning.chomp}"
	end

	alias :system_orig :system

	def system *args
	abort "Failed during: #{args.shell_s}" unless system_orig *args
	end

	def sudo *args
	args = if args.length > 1
	args.unshift "sudo"
	else
	"sudo #{args}"
	end
	ohai *args
	system *args
	end

	def getc # NOTE only tested on OS X
	system "stty raw -echo"
	STDIN.getc
	ensure
	system "stty -raw echo"
	end

	####################################################################### script
	abort "/usr/local/.git already exists!" if File.directory? "/usr/local/.git"
	abort "Don't run this as root!" if Process.uid == 0

	ohai "This script will install:"
	puts "/usr/local/bin/brew"
	puts "/usr/local/Library/Formula/..."
	puts "/usr/local/Library/Homebrew/..."

	chmods = %w(bin etc include lib sbin share var . share/locale share/man share/info share/doc share/aclocal).
	map{ \|d\| "/usr/local/#{d}" }.
	select{ \|d\| File.directory? d and not File.writable? d }
	chgrps = chmods.reject{ \|d\| File.stat(d).grpowned? }

	unless `groups`.split.include?("staff")
	ohai "The user #{`whoami`.strip} will be added to the staff group."
	end

	unless chmods.empty?
	ohai "The following directories will be made group writable:"
	puts *chmods
	end
	unless chgrps.empty?
	ohai "The following directories will have their group set to #{Tty.underline 39}staff#{Tty.reset}:"
	puts *chgrps
	end

	puts
	puts "Press enter to continue"
	abort unless getc == 13

	unless `groups`.split.include?("staff")
	sudo "dscl /Local/Default -append /Groups/staff GroupMembership #{`whoami`.strip}"
	end

	if File.directory? "/usr/local"
	sudo "/bin/chmod", "g+w", *chmods unless chmods.empty?
	# all admin users are in staff
	sudo "/usr/bin/chgrp", "staff", *chgrps unless chgrps.empty?
	else
	sudo "/bin/mkdir /usr/local"
	sudo "/bin/chmod g+w /usr/local"
	# the group is set to wheel by default for some reason
	sudo "/usr/bin/chgrp staff /usr/local"
	end

	Dir.chdir "/usr/local" do
	ohai "Downloading and Installing Homebrew..."
	# -m to stop tar erroring out if it can't modify the mtime for root owned directories
	system "/usr/bin/curl -sfL http://github.com/mxcl/homebrew/tarball/master \| /usr/bin/tar xz -m --strip 1"
	end

	ohai "Installation successful!"

	if ENV['PATH'].split(':').include? '/usr/local/bin'
	puts "Yay! Now learn to brew:"
	puts
	puts " brew help"
	puts
	else
	warn "/usr/local/bin is not in your PATH"
	end
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