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135 lines
3.8 KiB
Bash
135 lines
3.8 KiB
Bash
#! /bin/bash
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###
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### svg2icns.sh
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### Create ICNS file from SVG
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### https://gist.github.com/plroebuck/af19a26c908838c7f9e363c571199deb
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###
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### See also:
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### <https://stackoverflow.com/questions/12306223/how-to-manually-create-icns-files-using-iconutil#39678276>
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### <https://developer.apple.com/library/content/documentation/GraphicsAnimation/Conceptual/HighResolutionOSX/Optimizing/Optimizing.html>
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###
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script="$(basename $0 .sh)"
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PATH=/Applications/Inkscape.app/Contents/MacOS:/Applications/Inkscape.app/Contents/Resources/bin:"$PATH"
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CONVERT_BIN=$(which inkscape)
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: ${CONVERT_BIN?Requires Inkscape to be installed}
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## Usage function
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usage() {
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cat <<END_USAGE >&2
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Usage: ${script} <svgfilename> [<icnsfilename>]
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svgfilename: input file in SVG format
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icnsfilename: output file in ICNS format (optional)
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END_USAGE
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}
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## Call usage() function if args not supplied
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argc="$#"
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if [[ "$argc" -lt 1 ]] || [[ "$argc" -gt 2 ]];
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then
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usage
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exit 1
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fi
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## Verify first positional argument
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svgfilename="$1"
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if [ ! -f "${svgfilename}" ];
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then
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usage
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echo "${script}: no such file: ${svgfilename}" >&2
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exit 1
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else
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## Verify scalable vector graphics file
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$(file "${svgfilename}" | cut -d':' -f2- | grep -qs 'SVG')
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if [ "$?" -ne 0 ];
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then
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usage
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echo "${script}: SVG file required: ${svgfilename}" >&2
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exit 1
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fi
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fi
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## Verify second positional argument if given
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if [ "$argc" -eq 2 ];
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then
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icnsfilename="$2"
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if [ -n "${icnsfilename}" ];
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then
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## Ensure file extension
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ext=${icnsfilename##*.}
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if [ "$ext" != "icns" ];
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then
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icnsfilename="${icnsfilename}.icns"
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fi
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else
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## Given empty string as second arg
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icnsfilename="${svgfilename%.*}.icns"
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fi
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else
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## No second arg
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icnsfilename="${svgfilename%.*}.icns"
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fi
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## Create iconset directory if necessary
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iconsetdirname=/tmp/$(basename "${icnsfilename}" .icns)-$$.iconset
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mkdir -p "${iconsetdirname}"
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##+---------------------+--------------------+--------------+
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##| filename | resolution, pixels | density, PPI |
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##+---------------------+--------------------+--------------+
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##| icon_16x16.png | 16x16 | 72 |
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##| icon_16x16@2x.png | 32x32 | 144 |
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##| icon_32x32.png | 32x32 | 72 |
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##| icon_32x32@2x.png | 64x64 | 144 |
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##| icon_128x128.png | 128x128 | 72 |
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##| icon_128x128@2x.png | 256x256 | 144 |
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##| icon_256x256.png | 256x256 | 72 |
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##| icon_256x256@2x.png | 512x512 | 144 |
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##| icon_512x512.png | 512x512 | 72 |
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##| icon_512x512@2x.png | 1024x1024 | 144 |
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##+---------------------+--------------------+--------------+
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## Create PNG files as described in table
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sizes=( 16 32 128 256 512 )
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densities=( 72 144 )
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for size in "${sizes[@]}"
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do
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dimen="${size}x${size}"
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for density in "${densities[@]}"
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do
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if [ "${density}" == "72" ];
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then
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## std
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resolution="${dimen}"
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scale=""
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else
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## hires
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resolution="$(( $size * 2 ))x$(( $size * 2 ))"
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scale="@2x"
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fi
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pngfilename="${iconsetdirname}/icon_${dimen}${scale}.png"
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inkscape --export-type=png -w $size -h $size -o "${pngfilename}" "${svgfilename}"
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if [ "$?" -ne 0 ];
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then
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echo "${script}: error creating icon file: ${pngfilename}" >&2
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exit 1
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fi
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done
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done
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## Convert iconset to ICNS file
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iconutil --convert icns --output "${icnsfilename}" "${iconsetdirname}"
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if [ "$?" -ne 0 ];
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then
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echo "${script}: error converting iconset to ICNS: ${iconsetdirname}" >&2
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exit 1
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else
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rm -rf "${iconsetdirname}"
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fi
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exit 0
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