| #!/bin/sh | 
 |  | 
 | usage() { | 
 |   echo "usage: $0 <source root>" | 
 |   echo "  Prints the source control revision of the given source directory," | 
 |   echo "  the exact format of the revision string depends on the source " | 
 |   echo "  control system. If the source control system isn't known, the output" | 
 |   echo "  is empty and the exit code is 1." | 
 |   exit 1 | 
 | } | 
 |  | 
 | if [ $# != 1 ] || [ ! -d $1 ]; then | 
 |   usage; | 
 | fi | 
 |  | 
 | cd $1 | 
 | if [ -d .svn ]; then | 
 |   svnversion | sed -e "s#\([0-9]*\)[A-Z]*#\1#" | 
 | elif [ -f .git/svn/.metadata ]; then | 
 |   git svn info | grep 'Revision:' | cut -d: -f2- | 
 | elif [ -d .git ]; then | 
 |   git log -1 --pretty=format:%H | 
 | else | 
 |   exit 1; | 
 | fi | 
 |  | 
 | exit 0 |