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#!/bin/bash
#
# optipng.sh - Compress PNG files using optpng
#
# Copyright (c) 2015-2016 Pacman Development Team <pacman-dev@archlinux.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
[[ -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
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
fi
}
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