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# Copyright 2009 Max Howell <max@methylblue.com>
#
# This file is part of Homebrew.
#
# Homebrew is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Homebrew is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Homebrew. If not, see <http://www.gnu.org/licenses/>.
#
require 'pathname'
# we enhance pathname to make our code more readable
class Pathname
def mv dst
FileUtils.mv to_s, dst
end
def rename newname
raise unless file?
dst=dirname+newname
dst.unlink rescue nil
mv dst
end
def install src
if src.is_a? Array
src.collect {|src| install src }
elsif File.exist? src
mkpath
if File.symlink? src
# we use the BSD mv command because FileUtils copies the target and
# not the link! I'm beginning to wish I'd used Python quite honestly!
raise unless Kernel.system 'mv', src, to_s and $? == 0
else
# we mv when possible as it is faster and you should only be using
# this function when installing from the temporary build directory
FileUtils.mv src, to_s
end
return self+src
end
end
def cp dst
if file?
FileUtils.cp to_s, dst
else
FileUtils.cp_r to_s, dst
end
end
# extended to support the double extensions .tar.gz and .tar.bz2
def extname
/(\.tar\.(gz|bz2))$/.match to_s
return $1 if $1
return File.extname(to_s)
end
# for filetypes we support, basename without extension
def stem
return File.basename(to_s, extname)
end
# I don't trust the children.length == 0 check particularly, not to mention
# it is slow to enumerate the whole directory just to see if it is empty,
# instead rely on good ol' libc and the filesystem
def rmdir_if_possible
rmdir
rescue SystemCallError => e
raise unless e.errno == Errno::ENOTEMPTY::Errno
end
def chmod_R perms
require 'fileutils'
FileUtils.chmod_R perms, to_s
end
def abv
`find #{to_s} -type f | wc -l`.strip+' files, '+`du -hd0 #{to_s} | cut -d"\t" -f1`.strip
end
def version
# eg. boost_1_39_0
/((\d+_)+\d+)$/.match stem
return $1.gsub('_', '.') if $1
# eg. foobar-4.5.1-1
/-((\d+\.)*\d+-\d+)$/.match stem
return $1 if $1
# eg. foobar-4.5.1
/-((\d+\.)*\d+)$/.match stem
return $1 if $1
# eg. foobar-4.5.1b
/-((\d+\.)*\d+([abc]|rc\d))$/.match stem
return $1 if $1
# eg foobar-4.5.0-beta1
/-((\d+\.)*\d+-beta\d+)$/.match stem
return $1 if $1
# eg. foobar4.5.1
/((\d+\.)*\d+)$/.match stem
return $1 if $1
# eg. otp_src_R13B (this is erlang's style)
# eg. astyle_1.23_macosx.tar.gz
stem.scan /_([^_]+)/ do |match|
return match.first if /\d/.match $1
end
end
end
# sets $n and $d so you can observe creation of stuff
module ObserverPathnameExtension
def unlink
super
puts "rm #{to_s}" if ARGV.verbose?
$n+=1
end
def rmdir
super
puts "rmdir #{to_s}" if ARGV.verbose?
$d+=1
end
def resolved_path_exists?
(dirname+readlink).exist?
end
def mkpath
super
puts "mkpath #{to_s}" if ARGV.verbose?
$d+=1
end
def make_relative_symlink src
dirname.mkpath
Dir.chdir dirname do
# TODO use Ruby function so we get exceptions
# NOTE Ruby functions may work, but I had a lot of problems
rv=system 'ln', '-sf', src.relative_path_from(dirname)
raise "Could not create symlink #{to_s}" unless rv and $? == 0
puts "ln #{to_s}" if ARGV.verbose?
$n+=1
end
end
end
$n=0
$d=0
|
