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#!/usr/bin/env ruby
require 'optparse'
require 'pathname'
class VCSNotFoundError < RuntimeError; end
def detect_vcs(path)
target_path = Pathname(File.expand_path(path))
path = target_path.directory? ? target_path : target_path.parent
begin
return :svn, target_path.relative_path_from(path) if File.directory?("#{path}/.svn")
return :git, target_path.relative_path_from(path) if File.directory?("#{path}/.git")
path, orig = path.parent, path
end until path == orig
raise VCSNotFoundError, "does not seem to be under a vcs"
end
def get_revisions(path)
ENV['LANG'] = ENV['LC_ALL'] = ENV['LC_MESSAGES'] = 'C'
vcs, path = detect_vcs(path)
info = case vcs
when :svn
`svn info #{path}`
when :git
`git svn info #{path}`
end
if info =~ /^Revision: (\d+)$/
last = $1
else
raise "last revision not found"
end
if info =~ /^Last Changed Rev: (\d+)$/
changed = $1
else
raise "changed revision not found"
end
return last, changed
end
def raise_if_conflict
raise "you can specify only one of --changed, --revision.h and --doxygen" if $output
end
parser = OptionParser.new {|opts|
opts.on("--changed", "changed rev") do
raise_if_conflict
$output = :changed
end
opts.on("--revision.h") do
raise_if_conflict
$output = :revision_h
end
opts.on("--doxygen") do
raise_if_conflict
$output = :doxygen
end
opts.on("-q", "--suppress_not_found") do
$suppress_not_found = true
end
}
parser.parse!
begin
last, changed = get_revisions(ARGV.shift)
rescue VCSNotFoundError
raise unless $suppress_not_found
end
case $output
when :changed, nil
puts changed
when :revision_h
puts "#define RUBY_REVISION #{changed}"
when :doxygen
puts "r#{changed}/r#{last}"
else
raise "unknown output format `#{$output}'"
end
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