brew/Library/Homebrew/cleaner.rb
2014-02-23 15:53:25 -08:00

93 lines
2.0 KiB
Ruby

# Cleans a newly installed keg.
# By default:
# * removes .la files
# * removes empty directories
# * sets permissions on executables
class Cleaner
# Create a cleaner for the given formula
def initialize f
@f = f
end
# Clean the keg of formula @f
def clean
ObserverPathnameExtension.reset_counts!
[@f.bin, @f.sbin, @f.lib].select{ |d| d.exist? }.each{ |d| clean_dir d }
# Get rid of any info 'dir' files, so they don't conflict at the 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
prune
end
private
def prune
dirs = []
symlinks = []
@f.prefix.find do |path|
if @f.skip_clean? path
Find.prune
elsif path.symlink?
symlinks << path
elsif path.directory?
dirs << path
end
end
dirs.reverse_each do |d|
if d.children.empty?
puts "rmdir: #{d} (empty)" if ARGV.verbose?
d.rmdir
end
end
symlinks.reverse_each do |s|
s.unlink unless s.resolved_path_exists?
end
end
# 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
if ARGV.debug?
old_perms = path.stat.mode & 0777
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(ObserverPathnameExtension)
Find.prune if @f.skip_clean? path
if path.symlink? or path.directory?
next
elsif path.extname == '.la'
path.unlink
elsif path == @f.lib+'charset.alias'
# Many formulae symlink this file, but it is not strictly needed
path.unlink
else
clean_file_permissions(path)
end
end
end
end