Extract history introspection from "versions" command
This commit is contained in:
Jack Nagel
parent
17a27d3464
commit
56b041ca25
@ -2,7 +2,7 @@ require 'formula'
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require 'bottles'
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require 'tab'
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require 'keg'
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require 'cmd/versions'
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require 'formula_versions'
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require 'utils/inreplace'
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require 'erb'
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require 'extend/pathname'
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@ -123,7 +123,9 @@ module Homebrew extend self
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if ARGV.include? '--no-revision'
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bottle_revision = 0
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else
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max = f.bottle_version_map('origin/master')[f.pkg_version].max
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ohai "Determining #{f.name} bottle revision..."
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versions = FormulaVersions.new(f)
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max = versions.bottle_version_map("origin/master")[f.pkg_version].max
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bottle_revision = max ? max + 1 : 0
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end
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@ -1,10 +1,10 @@
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require 'formula'
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require "formula"
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require "formula_versions"
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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 "Please `brew update` first" unless (HOMEBREW_REPOSITORY/".git").directory?
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raise FormulaUnspecifiedError if ARGV.named.empty?
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opoo <<-EOS.undent
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@ -13,107 +13,12 @@ module Homebrew extend self
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https://github.com/Homebrew/homebrew-versions
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EOS
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ARGV.formulae.all? do |f|
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relative_path = f.pretty_relative_path
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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} #{relative_path}"
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versions = FormulaVersions.new(f)
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path = versions.repository_path
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versions.each do |version, rev|
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print "#{Tty.white}#{version.to_s.ljust(8)}#{Tty.reset} "
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puts "git checkout #{rev} #{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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class Formula
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def versions
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versions = []
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rev_list 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 bottle_version_map branch='HEAD'
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map = Hash.new { |h, k| h[k] = [] }
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rev_list(branch) do |rev|
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formula_for_sha(rev) do |f|
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bottle = f.stable.bottle_specification
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unless bottle.checksums.empty?
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map[f.pkg_version] << bottle.revision
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end
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end
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end
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map
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end
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def pretty_relative_path
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if Pathname.pwd == repository
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entry_name
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else
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path
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end
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end
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private
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def repository
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@repository ||= begin
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if path.to_s =~ HOMEBREW_TAP_DIR_REGEX
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HOMEBREW_REPOSITORY/"Library/Taps/#$1/#$2"
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else
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HOMEBREW_REPOSITORY
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end
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end
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end
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def entry_name
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@entry_name ||= path.relative_path_from(repository).to_s
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end
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def rev_list branch='HEAD'
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repository.cd do
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IO.popen("git rev-list --abbrev-commit --remove-empty #{branch} -- #{entry_name}") do |io|
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yield io.readline.chomp until io.eof?
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end
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end
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end
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def text_from_sha sha
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repository.cd do
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`git cat-file blob #{sha}:#{entry_name}`
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end
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end
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IGNORED_EXCEPTIONS = [SyntaxError, TypeError, NameError,
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ArgumentError, FormulaSpecificationError,
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FormulaValidationError,]
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def version_for_sha sha
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formula_for_sha(sha) {|f| f.version }
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end
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def formula_for_sha sha, &block
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mktemp do
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path = Pathname.pwd.join("#{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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begin
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old_const = Formulary.unload_formula name
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nostdout { yield Formula.factory(path.to_s) }
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rescue *IGNORED_EXCEPTIONS => e
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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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ohai "#{e} in #{name} at revision #{sha}", e.backtrace if ARGV.debug?
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rescue FormulaUnavailableError
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# Suppress this error
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ensure
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Formulary.restore_formula name, old_const
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end
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end
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end
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end
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86
Library/Homebrew/formula_versions.rb
Normal file
86
Library/Homebrew/formula_versions.rb
Normal file
@ -0,0 +1,86 @@
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class FormulaVersions
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IGNORED_EXCEPTIONS = [
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ArgumentError, NameError, SyntaxError, TypeError,
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FormulaSpecificationError, FormulaValidationError,
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]
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attr_reader :f
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def initialize(f)
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@f = f
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end
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def repository
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@repository ||= if f.path.to_s =~ HOMEBREW_TAP_DIR_REGEX
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HOMEBREW_REPOSITORY/"Library/Taps/#$1/#$2"
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else
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HOMEBREW_REPOSITORY
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end
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end
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def entry_name
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@entry_name ||= f.path.relative_path_from(repository).to_s
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end
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def each
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versions = Set.new
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rev_list do |rev|
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version = version_at_revision(rev)
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next if version.nil?
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yield version, rev if versions.add?(version)
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end
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end
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def repository_path
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Pathname.pwd == repository ? entry_name : f.path
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end
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def rev_list(branch="HEAD")
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repository.cd do
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IO.popen("git rev-list --abbrev-commit --remove-empty #{branch} -- #{entry_name}") do |io|
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yield io.readline.chomp until io.eof?
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end
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end
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end
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def file_contents_at_revision(rev)
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repository.cd { `git cat-file blob #{rev}:#{entry_name}` }
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end
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def version_at_revision(rev)
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formula_at_revision(rev) { |f| f.version }
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end
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def formula_at_revision rev, &block
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f.mktemp do
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path = Pathname.pwd.join("#{f.name}.rb")
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path.write file_contents_at_revision(rev)
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begin
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old_const = Formulary.unload_formula(f.name)
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nostdout { yield Formula.factory(path.to_s) }
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rescue *IGNORED_EXCEPTIONS => e
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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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ohai "#{e} in #{f.name} at revision #{rev}", e.backtrace if ARGV.debug?
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rescue FormulaUnavailableError
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# Suppress this error
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ensure
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Formulary.restore_formula(f.name, old_const)
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end
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end
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end
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def bottle_version_map(branch="HEAD")
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map = Hash.new { |h, k| h[k] = [] }
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rev_list(branch) do |rev|
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formula_at_revision(rev) do |f|
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bottle = f.stable.bottle_specification
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unless bottle.checksums.empty?
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map[f.pkg_version] << bottle.revision
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end
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end
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end
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map
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end
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end
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