85b17ecb4e
brew-unpack was failing for formulae that satisfy fails_with_llvm? as handle_llvm_failure() requires our ENV extension to get ENV.compiler. Rather than requiring extend/ENV, just define fails_with_llvm? as false since we don't really care about that when just unpacking a formula. Signed-off-by: Jack Nagel <jacknagel@gmail.com>
94 lines
2.7 KiB
Ruby
Executable File
94 lines
2.7 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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# Need to tweak the Formula class slightly so that patching is option and `DATA`
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# patches work correctly.
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class Formula
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# Create a reference to the original Formula.patch method and then override
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# so that paching only happens if the user asks.
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alias do_patch patch
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def patch
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if ARGV.include? '--patch'
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# Yes Ruby, we are about to redefine a constant. Just breathe.
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orig_v = $VERBOSE; $VERBOSE = nil
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Formula.const_set 'DATA', ScriptDataReader.load(path)
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$VERBOSE = orig_v
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do_patch
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end
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end
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# handle_llvm_failure() requires extend/ENV, so let's never fail
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# with llvm since we don't particularly care in this context.
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def fails_with_llvm?; false; end
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end
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module Homebrew extend self
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def unpack
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unpack_usage = <<-EOS
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Usage: brew unpack [--patch] [--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 `--patch` option is
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supplied, patches will also be downloaded and applied.
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EOS
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if ARGV.empty?
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puts unpack_usage
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exit 0
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end
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formulae = ARGV.formulae
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raise FormulaUnspecifiedError if formulae.empty?
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unpack_dir = ARGV.options_only.select {|o| o.start_with? "--destdir="}
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if unpack_dir.empty?
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unpack_dir = Pathname.new Dir.getwd
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else
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unpack_dir = Pathname.new(unpack_dir.first.split('=')[1]).realpath
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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?
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formulae.each do |f|
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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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raise "Destination #{stage_dir} allready exists!" if stage_dir.exist?
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f.brew do
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oh1 "Unpacking #{f.name} to: #{stage_dir}"
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cp_r Dir.getwd, stage_dir
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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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