/
generate_assets.sh
executable file
·125 lines (100 loc) · 3.36 KB
/
generate_assets.sh
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#
# generate_assets.sh
# Tranquil
#
# Created by Dana Buehre on 3/20/22.
#
# based on https://gist.github.com/sag333ar/bf55ac27c6ffa5fd2ee72fd4f5b79fe9
# Generate Assets.xcassets for a directory containing 3x png files
# example usage: ./generate_assets.sh -s Image-Assets -o . -c Resources
while getopts s:o:c: flag
do
case "${flag}" in
s) sourceDirectory=$(echo ${OPTARG} | sed 's:/*$::');;
o) outputDirectory=$(echo ${OPTARG} | sed 's:/*$::');;
c) compileDirectory=$(echo ${OPTARG} | sed 's:/*$::');;
*)
esac
done
if [ -z ${sourceDirectory+x} ]; then echo "no source directory set"; exit; fi
if [ -z ${outputDirectory+x} ]; then echo "no output directory set, using sourceDirectory"; outputDirectory="$sourceDirectory"; fi
if [ -z ${compileDirectory+x} ]; then echo "no source directory set, using outputDirectory"; compileDirectory="$outputDirectory"; fi
if [ ! -d "$sourceDirectory" ]; then echo "source directory doesn't exist"; exit; fi
assetsDirectory="$outputDirectory/Assets.xcassets"
rm -rf "$assetsDirectory"
mkdir -p "$assetsDirectory"
assetsContent=$(cat <<-____HERE
{
"info" : {
"author" : "xcode",
"version" : 1
}
}
____HERE
)
printf '%s' "$assetsContent" >> "$assetsDirectory/Contents.json"
for f in "$sourceDirectory"/*.png
do
# Get the name of the file from the path
fileName="${f##*/}";
# Get the file name without extension
baseName=$(echo "$fileName" | cut -d'.' -f1)
# Path to the working copy of the original image
workingCopy="$sourceDirectory/_$fileName"
# Create a copy of the original file
cp "$f" "$workingCopy"
# Set proper resolution to working copy
sips -s dpiHeight 72.0 -s dpiWidth 72.0 "$workingCopy"
# Creating Asset folder
mkdir -p "$assetsDirectory/$baseName.imageset"
# Create 1x, 2x, 3x, image copies in the asset folder
cp "$workingCopy" "$assetsDirectory/$baseName.imageset/$baseName@3x.png"
cp "$workingCopy" "$assetsDirectory/$baseName.imageset/$baseName@2x.png"
cp "$workingCopy" "$assetsDirectory/$baseName.imageset/$baseName.png"
# Get Width of original file
xWIDTH=$(sips -g pixelWidth "$workingCopy" | cut -d':' -f 2 | tail -1 | cut -d' ' -f 2)
# Get Height of original file
xHEIGHT=$(sips -g pixelHeight "$workingCopy" | cut -d':' -f 2 | tail -1 | cut -d' ' -f 2)
# Variables for 1x
xWIDTH1=$(expr $xWIDTH / 3)
xHEIGHT1=$(expr $xHEIGHT / 3)
# Variables for 2x
xWIDTH2=`expr $xWIDTH1 \* 2`
xHEIGHT2=`expr $xHEIGHT1 \* 2`
# Apply size to images
sips -z "$xHEIGHT1" "$xWIDTH1" "$assetsDirectory/$baseName.imageset/$fileName"
sips -z "$xHEIGHT2" "$xWIDTH2" "$assetsDirectory/$baseName.imageset/$baseName@2x.png"
rm "$workingCopy"
imagesetContent=$(cat <<-____HERE
{
"images" : [
{
"filename" : "${baseName}.png",
"idiom" : "universal",
"scale" : "1x"
},
{
"filename" : "${baseName}@2x.png",
"idiom" : "universal",
"scale" : "2x"
},
{
"filename" : "${baseName}@3x.png",
"idiom" : "universal",
"scale" : "3x"
}
],
"info" : {
"author" : "xcode",
"version" : 1
},
"properties" : {
"compression-type" : "lossless"
}
}
____HERE
)
printf '%s' "$imagesetContent" >> "${assetsDirectory}/${baseName}.imageset/Contents.json"
done
/usr/bin/xcrun actool "$assetsDirectory" --compile "$compileDirectory" --platform iphoneos --minimum-deployment-target 11.0 &> /dev/null
exit 1;