Vamp Build and Test

#!/bin/bash

vcs_id() {

    dir="$1"

    ( cd "$dir" ;

      if [ -d .hg ]; then

	  tag=$(hg id -t -r 'parents(.)') # tag is always followed by tag-commit

	  if [ "$tag" != "" ]; then

	      echo "${tag#$dir-}" # strip dir- prefix from tag if present

	  else 

	      hg id | awk '{ print $1; }'

	  fi

      elif [ -d .git ]; then

	  git rev-parse --short HEAD

      elif [ -d .svn ]; then

	  svn info | grep ^Revision | awk '{ print $2; }'

      else

	  echo "unknown"

      fi

    )

}