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#!/usr/bin/bash
#
#   optipng.sh - Compress PNG files using optpng
#

[[ -n "$LIBMAKEPKG_TIDY_OPTIPNG_SH" ]] && return
LIBMAKEPKG_TIDY_OPTIPNG_SH=1

LIBRARY=${LIBRARY:-'@libmakepkgdir@'}

source "$LIBRARY/util/message.sh"
source "$LIBRARY/util/option.sh"

packaging_options+=('optipng')
tidy_modify+=('tidy_optipng')

tidy_optipng() {
  if check_option "optipng" "y"; then
    msg2 "$(gettext "Optimizing PNG images...")"
    local png
    find . -type f -iname "*.png" 2>/dev/null | while read -r png ; do
      [ $(jobs -p|wc -l) -gt $(nproc) ] && wait -n
      if [[ $(file --brief --mime-type "$png") = 'image/png' ]]; then
        { optipng "${OPTIPNGFLAGS[@]}" "$png" &>/dev/null ||
          warning "$(gettext "Could not optimize PNG image : %s")" "${png/$pkgdir\//}"; } &
      fi
    done
    wait
  fi
}