47 lines
1.0 KiB
Bash
Executable File
47 lines
1.0 KiB
Bash
Executable File
#!/bin/bash
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#
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# compress-pngs.sh
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# Run various compression and optimization utilities on one or more PNGs
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#
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# Wireshark - Network traffic analyzer
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# By Gerald Combs <gerald@wireshark.org>
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# Copyright 2013 Gerald Combs
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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#
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FILE_LIST_CMD="find . -type f -name \"*.png\""
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if [ -n "$1" ] ; then
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FILE_LIST_CMD="echo $1"
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fi
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# Other utilities:
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# PNGOUT (http://advsys.net/ken/utils.htm). Closed source.
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# pngquant (https://pngquant.org/). Lossy.
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JOBS=8
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export FILE_LIST_CMD
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(
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echo -n "PNG_FILES ="
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bash -c "$FILE_LIST_CMD" | while read -r PNG_FILE ; do
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echo -e " \\"
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echo -e -n "\\t${PNG_FILE}"
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done
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cat <<"FIN"
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all: $(PNG_FILES)
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$(PNG_FILES): FORCE
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@echo Compressing $@
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@hash optipng 2>/dev/null && optipng -o3 -quiet "$@"
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@hash advpng 2>/dev/null && advpng -z -4 "$@"
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@hash advdef 2>/dev/null && advdef -z -4 "$@"
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@hash pngcrush 2>/dev/null && pngcrush -q -ow -brute -reduce -noforce "$@" pngout.$$$$.png
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FORCE:
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FIN
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) | make -j $JOBS -f -
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