a convenient shell script to vim a file under ROS package

rosvim.sh

function rosvim {
  ROSVIM_FNAME=$1
  if [ ! -f $ROSVIM_FNAME ]; then
    ROSVIM_PKGS="package1 package2 package3"
    for PKG_NAME in $ROSVIM_PKGS; do
      ROSVIM_PKG_PATH=$(rospack find $PKG_NAME 2> /dev/null)
      if [ $? -eq 0 ]; then
        ROSVIM_FNAME_FULL=$(find -L $ROSVIM_PKG_PATH -name "$ROSVIM_FNAME" | head -n1)
        if [ ! -z $ROSVIM_FNAME_FULL ]; then
          ROSVIM_FNAME=$ROSVIM_FNAME_FULL
          break
        fi
      fi
    done
  fi
  if [ "$ROSVIM_FNAME" == "$1" ]; then
    echo "[ROSVIM] open a new file (./$ROSVIM_FNAME) since it does not exist in ROS workspace."
  else
    echo "[ROSVIM] open the existing file ($ROSVIM_FNAME)"
  fi
  vim $ROSVIM_FNAME
}