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# Cleans a newly installed keg.
# By default:
# * removes info files
# * removes .la files
# * removes empty directories
# * sets permissions on executables
class Cleaner
# Create a cleaner for the given formula name, and clean the keg
def initialize f
@f = Formula.factory f
[f.bin, f.sbin, f.lib].select{ |d| d.exist? }.each{ |d| clean_dir d }
if ENV['HOMEBREW_KEEP_INFO']
# Get rid of the directory file, so it no longer bother us at link stage.
info_dir_file = f.info + 'dir'
if info_dir_file.file? and not f.skip_clean? info_dir_file
puts "rm #{info_dir_file}" if ARGV.verbose?
info_dir_file.unlink
end
else
f.info.rmtree if f.info.directory? and not f.skip_clean? f.info
end
# Remove empty folders.
# We want post-order traversal, so use a stack.
paths = []
f.prefix.find do |path|
paths << path if path.directory?
end
paths.each do |d|
if d.children.empty? and not f.skip_clean? d
puts "rmdir: #{d} (empty)" if ARGV.verbose?
d.rmdir
end
end
end
private
# Set permissions for executables and non-executables
def clean_file_permissions path
perms = if path.mach_o_executable? || path.text_executable?
0555
else
0444
end
# Uncomment this block to show permission changes using brew install -v
# if ARGV.verbose?
# old_perms = path.stat.mode
# if perms != old_perms
# puts "Fixing #{path} permissions from #{old_perms.to_s(8)} to #{perms.to_s(8)}"
# end
# end
path.chmod perms
end
# Clean a single folder (non-recursively)
def clean_dir d
d.find do |path|
path.extend(NoiseyPathname) if ARGV.verbose?
if path.directory?
# Stop cleaning this subtree if protected
Find.prune if @f.skip_clean? path
elsif not path.file?
# Sanity?
next
elsif path.extname == '.la'
# *.la files are stupid
path.unlink unless @f.skip_clean? path
elsif path == @f.lib+'charset.alias'
# Many formulae symlink this file, but it is not strictly needed
path.unlink unless @f.skip_clean? path
elsif not path.symlink?
# Fix permissions
clean_file_permissions path
end
end
end
end
class Pathname
alias_method :orig_unlink, :unlink
end
module NoiseyPathname
def unlink
puts "rm: #{self}"
orig_unlink
end
end
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