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32b7c9ff15
Formula::DATA only worked by accident of implementation; DATA during the build is actually Object::DATA, so we should mirror that here. This reverts commit b12444ba6e1ac1d596a70ff4c777d9386d0791ac.
101 lines
2.6 KiB
Ruby
Executable File
101 lines
2.6 KiB
Ruby
Executable File
require 'formula'
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require 'stringio'
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module ScriptDataReader
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# This module contains a method for extracting the contents of DATA from a
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# Ruby file other than the script containing the currently executing
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# function. Many thanks to Glenn Jackman's Stackoverflow answer which
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# provided this code:
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#
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# http://stackoverflow.com/questions/2156629/can-i-access-the-data-from-a-required-script-in-ruby/2157556#2157556
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def self.load(filename)
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data = StringIO.new
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File.open(filename) do |f|
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begin
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line = f.gets
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end until line.nil? or line.match(/^__END__$/)
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while line = f.gets
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data << line
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end
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end
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data.rewind
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data
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end
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end
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module UnpackPatch
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def patch
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return unless ARGV.flag? "--patch"
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begin
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old_verbose = $VERBOSE
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$VERBOSE = nil
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Object.const_set "DATA", ScriptDataReader.load(path)
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ensure
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$VERBOSE = old_verbose
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end
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super
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end
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end
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module Homebrew extend self
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def unpack_usage; <<-EOS.undent
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Usage: brew unpack [-pg] [--destdir=path/to/extract/in] <formulae ...>
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Unpack formulae source code for inspection.
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Formulae archives will be extracted to subfolders inside the current working
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directory or a directory specified by `--destdir`. If the `-p` option is
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supplied, patches will also be downloaded and applied. If the `-g` option is
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specified a git repository is created and all files added so that you can diff
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changes.
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EOS
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end
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def unpack
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abort unpack_usage if ARGV.empty?
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formulae = ARGV.formulae
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raise FormulaUnspecifiedError if formulae.empty?
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if (dir = ARGV.value('destdir')).nil?
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unpack_dir = Pathname.pwd
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else
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unpack_dir = Pathname.new(dir)
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unpack_dir.mkpath unless unpack_dir.exist?
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end
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raise "Cannot write to #{unpack_dir}" unless unpack_dir.writable_real?
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formulae.each do |f|
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f.extend(UnpackPatch)
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# Create a nice name for the stage folder.
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stage_dir = unpack_dir + [f.name, f.version].join('-')
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if stage_dir.exist?
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raise "Destination #{stage_dir} already exists!" unless ARGV.force?
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rm_rf stage_dir
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end
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oh1 "Unpacking #{f.name} to: #{stage_dir}"
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ENV['VERBOSE'] = '1' # show messages about tar
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f.brew { cp_r getwd, stage_dir }
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ENV['VERBOSE'] = nil
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if ARGV.switch? 'g'
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ohai "Setting up git repository"
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cd stage_dir
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system "git", "init", "-q"
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system "git", "add", "-A"
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system "git", "commit", "-q", "-m", "brew-unpack"
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end
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end
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end
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end
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# Here is the actual code that gets run when `brew` loads this external
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# command.
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Homebrew.unpack
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