зеркало из https://github.com/github/ruby.git
130 строки
2.9 KiB
Ruby
Executable File
130 строки
2.9 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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ENV.delete('PWD')
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require 'optparse'
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require 'pathname'
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Program = Pathname($0)
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class VCS
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class NotFoundError < RuntimeError; end
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@@dirs = []
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def self.register(dir)
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@@dirs << [dir, self]
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end
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def self.detect(path)
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@@dirs.sort.reverse_each do |dir, klass|
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return klass.new(path) if File.directory?("#{path}/#{dir}")
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end
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raise VCS::NotFoundError, "does not seem to be under a vcs: #{path}"
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end
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def initialize(path)
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@srcdir = path
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super()
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end
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# return a pair of strings, the last revision and the last revision in which
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# +path+ was modified.
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def get_revisions(path)
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path = relative_to(path)
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last, changed, *rest = Dir.chdir(@srcdir) {self.class.get_revisions(path)}
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last or raise "last revision not found"
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changed or raise "changed revision not found"
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return last, changed, *rest
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end
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def relative_to(path)
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if path
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path = Pathname(path)
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srcdir = @srcdir
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if path.absolute? ^ srcdir.absolute?
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if path.absolute?
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srcdir = srcdir.expand_path
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end
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else
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if srcdir.absolute?
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path = path.expand_path
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end
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end
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path.relative_path_from(srcdir)
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else
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'.'
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end
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end
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class SVN < self
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register(".svn")
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def self.get_revisions(path)
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info_xml = `svn info --xml "#{path}"`
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_, last, _, changed, _ = info_xml.split(/revision="(\d+)"/)
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[last, changed]
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end
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end
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class GIT < self
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register(".git")
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def self.get_revisions(path)
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logcmd = %Q[git log -n1 --grep="^ *git-svn-id: .*@[0-9][0-9]* "]
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idpat = /git-svn-id: .*?@(\d+) \S+\Z/
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last = `#{logcmd}`[idpat, 1]
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changed = path ? `#{logcmd} "#{path}"`[idpat, 1] : last
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[last, changed]
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end
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end
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end
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@output = nil
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def self.output=(output)
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if @output and @output != output
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raise "you can specify only one of --changed, --revision.h and --doxygen"
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end
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@output = output
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end
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@suppress_not_found = false
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srcdir = nil
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parser = OptionParser.new {|opts|
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opts.on("--srcdir=PATH", "use PATH as source directory") do |path|
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srcdir = path
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end
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opts.on("--changed", "changed rev") do
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self.output = :changed
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end
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opts.on("--revision.h", "RUBY_REVISION macro") do
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self.output = :revision_h
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end
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opts.on("--doxygen", "Doxygen format") do
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self.output = :doxygen
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end
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opts.on("-q", "--suppress_not_found") do
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@suppress_not_found = true
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end
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}
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parser.parse! rescue abort "#{Program.basename}: #{$!}\n#{parser}"
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srcdir = (srcdir ? Pathname(srcdir) : Program.parent.parent).freeze
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begin
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vcs = VCS.detect(srcdir)
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rescue VCS::NotFoundError => e
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abort "#{Program.basename}: #{e.message}" unless @suppress_not_found
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else
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last, changed = vcs.get_revisions(ARGV.shift)
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end
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case @output
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when :changed, nil
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puts changed
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when :revision_h
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puts "#define RUBY_REVISION #{changed.to_i}"
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when :doxygen
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puts "r#{changed}/r#{last}"
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else
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raise "unknown output format `#{@output}'"
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end
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