mirror of
https://github.com/wesnoth/wesnoth
synced 2024-09-21 13:39:54 +00:00
95 lines
2.5 KiB
Bash
Executable File
95 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# Script to convert PNGs from indexed to RGB mode.
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#
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# Run-time requirements: ImageMagick, pngcheck
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# If --optipng is used, also wesnoth-optipng's requirements
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#
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run_optipng="no"
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while [ "${1}" != "" ]; do
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if [ "${1}" = "--help" ] || [ "${1}" = "-h" ]; then
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cat << EOF
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Automatic PNG RGBA conversion script
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Usage:
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`basename ${0}` [{--optipng|-o}] [{--help|-h}] {<file>|<dir>}...
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Files given on command line, are converted if they are not already in RGB+alpha mode (PNG mode 6).
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Directories will be recursively parsed for PNG files.
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Switches:
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--help / -h Displays this help text.
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--optipng / -o Runs wesnoth-optipng on the converted files afterwards.
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This tool requires ImageMagick and pngcheck to be installed and available in PATH.
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If the --optipng option is used, it also requires wesnoth-optipng to be present in the same directory.
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EOF
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exit 0
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elif [ "${1}" = "--optipng" ] || [ "${1}" = "-o" ]; then
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run_optipng="yes"
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shift
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elif [ -d "${1}" ]; then
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filelist="${filelist} `find ${1} -iname "*.png"`"
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shift
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elif [ -f "${1}" ]; then
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filelist="${filelist} ${1}"
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shift
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else
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echo "Argument ${1} is not a known switch nor is it a directory or file. Exiting."
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exit 1
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fi
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done
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input_number=`echo $filelist|wc -w`
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converted=""
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if [ "$input_number" -eq "0" ]; then
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echo "No input files"
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exit 0
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fi
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echo -n "Converting $input_number files to RGB mode... "
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for f in $filelist
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do
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if !(pngcheck $f|grep 'RGB+alpha' &> /dev/null)
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then
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# -define png:color-type=6 is the PNG way to specify RGBA, it doesn't always work though
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# http://www.imagemagick.org/Usage/formats/#png_write
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convert -define png:color-type=6 $f $f.new
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if !(pngcheck $f.new|grep 'RGB+alpha' &> /dev/null)
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then
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# asking the PNG writer nicely didn't work, force it instead
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convert -type TrueColorMatte $f $f.new
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fi
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if (pngcheck $f.new|grep 'RGB+alpha' &> /dev/null)
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then
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mv -f $f.new $f
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converted="${converted} ${f}"
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else
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rm $f.new
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echo "Failed to convert $f"
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fi
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fi
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done
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converted_number=`echo $converted|wc -w`
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echo "Done."
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echo "Changed $converted_number out of $input_number files."
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if [ "$converted_number" -eq "0" ];then
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true
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elif [ "$run_optipng" = "yes" ];then
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echo "Running optipng"
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`dirname ${0}`/wesnoth-optipng $converted
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else
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echo "Now would be a good time to run optipng"
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fi
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