optipng.sh.in

#!/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 $(getconf _NPROCESSORS_ONLN) ] && 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
}