File indexing completed on 2024-12-29 05:12:48

 #!/bin/sh
 
 # Copyright 2008 Urs Wolfer <uwolfer @ kde.org>
 # Copyright 2012, 2013 Bruno George Moraes <brunogm0 @ gmail.com>
 #
 # 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.
 #
 #
 # Thin wrapper script around optipng, advdef and pngout.
 # It filters the output and shows a summary at the end of the optimization run.
 # Tested with:
 # * OptiPNG 0.7.1 http://optipng.sourceforge.net/
 # * advdef (AdvanceCOMP) 1.15 http://advancemame.sourceforge.net/comp-readme.html
 # * PNGOUT http://www.jonof.id.au/kenutils (Note: no-cost download; non-Free software)
 
 # ${foo:-bar} syntax sets foo=bar if not already set
 optipng_tool=$(command -v optipng)
 optipng_tool=${optipng_tool:-/bin/true}
 
 advancecomp_tool=$(command -v advdef)
 advancecomp_tool=${advancecomp_tool:-/bin/true}
 
 pngout_tool=$(command -v pngout)
 pngout_tool=${pngout_tool:-/bin/true}
 
 thread_count=$(grep -c ^processor /proc/cpuinfo)
 thread_count=${thread_count:-4}
 
 if test "$1" = "-h" -o "$1" = "--help"; then
     echo "Usage: optimizegraphics [FILE]";
     echo "If [FILE] is not defined, it optimizes all files (PNG,MNG,SVGZ) recursively starting at the current working directory.";
     echo "To achieve the best optimization please use all supported tools (optipng,advdef,pngout).";
     exit;
 fi
 
 if [ ${optipng_tool} = "/bin/true" ]; then
     echo "Please install optipng to increase PNG compression.";
 fi
 if [ ${pngout_tool} = "/bin/true" ];  then
     echo "Please install pngout to increase PNG compression.";
 fi
 if [ ${advancecomp_tool} = "/bin/true" ]; then
     echo "Please install advancecomp to optimize PNG, MNG and SVGZ.";
 fi
 
 if [ $# -ne 0 ]; then # file is defined
     if [ ! -e "$1" ]; then
         echo "File $1 doesn't exist!"
         exit 1
     fi
 
     ${optipng_tool} -preserve -o6 "$1";
     ${advancecomp_tool} -z -4 "$1";
     ${pngout_tool} -ks "$1";
 
     exit $?
 
 else # do it recursively
     echo "Recursive parallel optimization using detected tools.";
     STARTSIZE=`du -sb | awk '{ print $1 }'`;
 
     # OptiPNG pass
     if [ "${optipng_tool}" != "/bin/true" ] ; then
         find . -name "*.png" -print0 | \
             xargs -t0r -n 1 -P $thread_count \
                 "${optipng_tool}" -quiet -preserve -o6
     else
         echo "Skipping OptiPNG optimizations for PNG file type"
     fi
 
     # AdvanceCOMP pass
     if [ "${advancecomp_tool}" != "/bin/true" ] ; then
         find . \( -name "*.svgz" -o -name '*.mng' -o -name '*.png' \) -print0 | \
             xargs -t0r -n 1 -P $thread_count \
                 "${advancecomp_tool}" -q -z -4
     else
         echo "Skipping AdvanceCOMP optimizations for SVGZ, MNG, PNG file types"
     fi
 
     # PNGout pass
     if [ "${pngout_tool}" != "/bin/true" ] ; then
         find . -name "*.png" -print0 | \
             xargs -t0r -n 1 -P $thread_count \
                 "${pngout_tool}" -q -ks
     else
         echo "Skipping PNGout optimizations for PNG file type"
     fi
 
     ENDSIZE=`du -sb | awk '{ print $1 }'`;
 
     REDUCEDSIZE=$(( $STARTSIZE - $ENDSIZE ));
     REDUCEDPER=$(( 100 * $REDUCEDSIZE / $STARTSIZE ));
 
     echo "optimizegraphics: Losslessly optimized PNG, MNG, and SVGZ files.";
     echo "Went from $STARTSIZE to $ENDSIZE bytes"
     echo "Reduced " $REDUCEDPER" % disk space:" $REDUCEDSIZE" Bytes, " \
         $(( $REDUCEDSIZE / 1024 )) "KiB, " $(( $REDUCEDSIZE / 1024 / 1024 )) "MiB";
 fi