#!/bin/sh

usage() {
  echo "usage: $0 <source root>"
  echo "  Prints the source control repository path of the given source"
  echo "  directory, the exact format of the revision string depends on the"
  echo "  source control system. If the source control system isn't known,"
  echo "  the output is empty and the exit code is 1."
  exit 1
}

if [ $# != 1 ] || [ ! -d $1 ]; then
  usage;
fi

cd $1
if [ -d .svn ]; then
  svn info | grep '^URL:' | cut -d: -f2-
elif [ -f .git/svn/.metadata ]; then
  git svn info | grep 'URL:' | cut -d: -f2-
elif [ -d .git ]; then
  git remote -v | grep 'fetch' | awk '{ print $2 }' | head -n1
else
  exit 1;
fi

exit 0