.bin/imgcrush

   1 #!/bin/bash
   2
   3 usage() {
   4         cat <<EOF
   5 Usage: imgcrush [options] <files>
   6 EOF
   7         exit ${1:-0}
   8 }
   9
  10 crush_jpg() {
  11         jpegoptim "$1"
  12 }
  13
  14 crush_png() {
  15         # apngopt likes to corrupt images.
  16         pngcrush -e .png.new "$1"
  17         mv "${png}.new" "${png}"
  18 }
  19
  20 crush() {
  21         case $1 in
  22         *.jpg|*.jpeg) crush_jpg "$1" ;;
  23         *.png)        crush_png "$1" ;;
  24         esac
  25 }
  26
  27 main() {
  28         set -e
  29
  30         while [[ $# -ne 0 ]] ; do
  31                 case $1 in
  32                 -h) usage ;;
  33                 -*) usage 1 ;;
  34                 *)  crush "$1" ;;
  35                 esac
  36         done
  37 }
  38 main "$@"