1#!/bin/sh
2
3function usage() {
4   echo "usage: $0 <source root>"
5   echo "  Prints the source control revision of the given source directory,"
6   echo "  the exact format of the revision string depends on the source "
7   echo "  control system. If the source control system isn't known, the output"
8   echo "  is empty and the exit code is 1."
9   exit 1
10}
11
12if [ $# != 1 ] || [ ! -d $1 ]; then
13  usage;
14fi
15
16cd $1
17if [ -d .svn ]; then
18   svnversion
19elif [ -d .git/svn ]; then
20   git svn info | grep 'Revision:' | cut -d: -f2-
21elif [ -d .git ]; then
22   git log -1 --pretty=format:%H
23else
24   exit 1;
25fi
26
27exit 0
28