#! /bin/bash
# Last edited on 2024-04-01 16:58:41 by stolfi

# Prints the width and height of a PBMPLUS file "$1".
# If $1 is not given, uses stdin.
# Prints "YUK YUK" and raises status=1 in case of error.

if [[ $# -gt 1 ]]; then echo "YUK YUK"; exit 1; fi

if [[ $# -eq 1 ]]; then 
  cmd="pnmfile $1"
else
  cmd="pnmfile"
fi

nxy="`${cmd} | /bin/sed -e '1s/^.* \([0-9][0-9]*\) by \([0-9][0-9]*\).*/\1 \2/'`"

nxy=( ${nxy} )
if [[ ${#nxy[@]} -ne 2 ]]; then echo "YUK YUK"; exit 1; fi

echo "${nxy[0]}" "${nxy[1]}"
exit 0