#!/usr/bin/ruby
#
#  FileRevision FILE
#
#  AVRsack
#
#  Created by Matthias Neeracher on 03/16/15.
#  Copyright © 2015 Aere Perennius. All rights reserved.
#

file = ARGV[0]
if file =~ %r|(.*)/(.*)|
    Dir.chdir($1)
    file = $2
end
rev = ''
IO.popen("git log -1 --pretty=oneline '#{file}'", 'r') do |io|
    if line = io.gets
        rev = line[0..7]
    end
end
if $? == 0 && rev.size > 0
    print rev
else
    IO.popen("svn info '#{file}'") do |io|
        io.each_line do |line|
            if line =~ /Last Changed Rev:\s+(\S+)/
                print "r"+$1
                exit 0
            end
        end
    end
end