#!/bin/sh

srcdir=$1
fallback=$2

if [ "x$fallback" = "x" ]; then
  fallback=UNKNOWN
fi

if [ -f $srcdir/.version ] ; then
  git_version=`cat $srcdir/.version`
else
  if which git > /dev/null; then
    cd $srcdir
    git_version=`git describe --abbrev=4 HEAD 2>/dev/null`
    if [ $? = 0 ]; then
      # Is the working tree dirty?
      if git diff-index --quiet --cached HEAD --ignore-submodules && \
         git diff-files --quiet --ignore-submodules ; then
	 :
      else
        git_version="$git_version-dirty"
      fi
    else
      git_version=$fallback
    fi
  else
    git_version=$fallback
  fi
fi

echo "$git_version" | sed -e 's/openafs-[^-]*-//' -e 's/_/./g' | tr -d '\012'