54 lines
1.4 KiB
Ruby
54 lines
1.4 KiB
Ruby
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require 'formula'
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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 [--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`.
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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.named
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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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f = Formula.factory(f)
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unless f.downloader.kind_of? CurlDownloadStrategy
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stage_dir = unpack_dir + [f.name, f.version].join('-')
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stage_dir.mkpath unless stage_dir.exist?
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else
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stage_dir = unpack_dir
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end
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# Can't use a do block here without DownloadStrategy do blocks throwing:
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# warning: conflicting chdir during another chdir block
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Dir.chdir stage_dir
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f.downloader.fetch
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f.downloader.stage
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Dir.chdir unpack_dir
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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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