83 lines
2.1 KiB
Ruby
83 lines
2.1 KiB
Ruby
require 'formula'
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module Homebrew extend self
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def versions
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raise "Please `brew install git` first" unless which "git"
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raise "Please `brew update' first" unless (HOMEBREW_REPOSITORY/".git").directory?
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raise FormulaUnspecifiedError if ARGV.named.empty?
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ARGV.formulae.all? do |f|
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if ARGV.include? '--compact'
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puts f.versions * " "
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else
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f.versions do |version, sha|
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print Tty.white.to_s
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print "#{version.to_s.ljust(8)} "
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print Tty.reset.to_s
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puts "git checkout #{sha} #{f.pretty_relative_path}"
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end
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end
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end
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end
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end
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class Formula
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def versions
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versions = []
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rev_list.each do |sha|
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version = version_for_sha sha
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unless versions.include? version or version.nil?
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yield version, sha if block_given?
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versions << version
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end
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end
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return versions
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end
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def pretty_relative_path
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if Pathname.pwd == HOMEBREW_REPOSITORY
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"Library/Formula/#{name}.rb"
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else
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"#{HOMEBREW_REPOSITORY}/Library/Formula/#{name}.rb"
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end
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end
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private
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def rev_list
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HOMEBREW_REPOSITORY.cd do
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`git rev-list --abbrev-commit HEAD -- Library/Formula/#{name}.rb`.split
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end
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end
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def text_from_sha sha
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HOMEBREW_REPOSITORY.cd do
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`git cat-file blob #{sha}:Library/Formula/#{name}.rb`
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end
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end
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def sha_for_version version
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rev_list.find{ |sha| version == version_for_sha(sha) }
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end
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def version_for_sha sha
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mktemp do
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path = Pathname.new(Pathname.pwd+"#{name}.rb")
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path.write text_from_sha(sha)
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# Unload the class so Formula#version returns the correct value
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# FIXME shouldn't have to do this?
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begin
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version = nostdout { Formula.factory(path).version }
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Object.send(:remove_const, Formula.class_s(name))
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version
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rescue SyntaxError, TypeError, NameError, ArgumentError
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# We rescue these so that we can skip bad versions and
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# continue walking the history
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nil
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end
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end
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end
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end
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