build_theme

#!/bin/bash

# build an icon theme from svg source - a bit hard coded :P
# (c) Michael Amadio, 2016,2024 - GPLv2

[ -f ./build.conf ] && . ./build.conf
[ -z "$NAME" ] &&  NAME=Generic
[ -z "$COMMENT" ] && COMMENT="An Icon Theme"
ICONS=$1
THEME="${NAME}-${ICONS}"
rm -rf $THEME
echo "Please wait. Processing $THEME ..."
[ -d "$THEME" ] && rm -r "$THEME"
TMP0=$(mktemp -p /tmp icn.XXXXXXXXX)
TMP1=$(mktemp -p /tmp fix.XXXXXXXXX)

(
cd $ICONS
# find each icon
while read -r line;do
	[ "${line:0:1}" = "#" ] && continue
	[ -z "$line" ] && continue
	# process, construct each icon
	while read -r a b c; do 
		[ -d "../${THEME}/${a}" ] || mkdir -p "../${THEME}/${a}"
		SIZE=${a%/*}
		[ "$SIZE" = 'scalable' ] && SIZE=256 # fix scalable
		if [ -r "$b" ]; then
			case ${THEME} in
				*banana) sed -i "s/\#BCBCBC/\#745252/g" "$b" ;;
			esac
			while read -r ent;do
				[ -z "$ent" ] && continue # skip blank lines
				if [ "${ent:0:4}" = '<svg' ];then
					if echo "$ent" | grep -q 'xlink';then
						printf "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" version=\"1.1\" height=\"${SIZE}px\" width=\"${SIZE}px\" viewBox=\"$VIEWBOX\">\n" >> "../${THEME}/${a}/${b}"
					else
						printf "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" height=\"${SIZE}px\" width=\"${SIZE}px\" viewBox=\"$VIEWBOX\">\n" >> "../${THEME}/${a}/${b}"
					fi
				elif [ "${ent:0:5}" = '<?xml' -o "${ent:0:6}" = '</svg>' ];then
					printf "%s\n" "${ent}" >> "../${THEME}/${a}/${b}"
				else
					printf "  %s\n" "${ent}" >> "../${THEME}/${a}/${b}"
				fi
			done <<< "$(cat $b)"
			# link(s) to icon if needed
			for link in `echo "$c"`;do
				[ -z "$b" ] && continue
				(cd "../${THEME}/${a}"; ln -sf "$b" "$link")
			done
		fi
	done <<< "$line"
done < ../theme.conf
)

# delete empty dirs
find $THEME -empty -type d -delete

# link for hidpi
(
cd $THEME
for i in `ls`; do ln -s $i ${i}@2x ;done
)

# constuct the index.theme
echo "${THEME}" | grep -q 'base' || OTHER="${NAME}-base,"
echo '[Icon Theme]' > "${THEME}"/index.theme
echo "Name=${THEME}" >> "${THEME}"/index.theme
echo "Inherits=${OTHER}hicolor" >> "${THEME}"/index.theme
echo "${THEME}" | grep -q 'base' && echo 'Hidden=true' >> "${THEME}"/index.theme
echo "Comment=$COMMENT" >> "${THEME}"/index.theme
echo -n "Directories=" >> "${THEME}"/index.theme
(cd "${THEME}"; find ./16 ./16@2x ./22 ./22@2x ./24 ./24@2x ./32 ./32@2x ./48 ./48@2x ./64 ./64@2x ./scalable ./scalable@2x -maxdepth 1 -type d -o -type l) > $TMP0
while read -r w;do
	echo -n "${w#*/}," >> $TMP1
done < $TMP0
cat "$TMP1" | sed 's/,$//' >> "${THEME}"/index.theme
#rm $TMP1
echo "" >> "${THEME}"/index.theme 
while read -r y;do
	yy=${y#*/}
	py=${yy#*/}
	echo "" >> "${THEME}"/index.theme  
	case $yy in 
		scalable*)
			echo "[${yy}]" >> "${THEME}"/index.theme
			echo "Size=256" >> "${THEME}"/index.theme
			echo "Context=${py^}" >> "${THEME}"/index.theme #first char upper
			echo "Type=Scalable" >> "${THEME}"/index.theme
			echo "MinSize=8" >> "${THEME}"/index.theme
			echo "MaxSize=512" >> "${THEME}"/index.theme
			;;
		16*)
			echo "[${yy}]" >> "${THEME}"/index.theme
			echo "Size=16" >> "${THEME}"/index.theme
			echo $yy | grep -q '@' && echo "Scale=2" >> "${THEME}"/index.theme
			echo "Context=${py^}" >> "${THEME}"/index.theme
			echo "Type=fixed" >> "${THEME}"/index.theme
			;;
		22*)
			echo "[${yy}]" >> "${THEME}"/index.theme
			echo "Size=22" >> "${THEME}"/index.theme
			echo $yy | grep -q '@' && echo "Scale=2" >> "${THEME}"/index.theme
			echo "Context=${py^}" >> "${THEME}"/index.theme
			echo "Type=fixed" >> "${THEME}"/index.theme
			;;
		24*)
			echo "[${yy}]" >> "${THEME}"/index.theme
			echo "Size=24" >> "${THEME}"/index.theme
			echo $yy | grep -q '@' && echo "Scale=2" >> "${THEME}"/index.theme
			echo "Context=${py^}" >> "${THEME}"/index.theme
			echo "Type=fixed" >> "${THEME}"/index.theme
			;;
		32*)
			echo "[${yy}]" >> "${THEME}"/index.theme
			echo "Size=32" >> "${THEME}"/index.theme
			echo $yy | grep -q '@' && echo "Scale=2" >> "${THEME}"/index.theme
			echo "Context=${py^}" >> "${THEME}"/index.theme
			echo "Type=fixed" >> "${THEME}"/index.theme
			;;
		48*)
			echo "[${yy}]" >> "${THEME}"/index.theme
			echo "Size=48" >> "${THEME}"/index.theme
			echo $yy | grep -q '@' && echo "Scale=2" >> "${THEME}"/index.theme
			echo "Context=${py^}" >> "${THEME}"/index.theme
			echo "Type=fixed" >> "${THEME}"/index.theme
			;;
		64*)
			echo "[${yy}]" >> "${THEME}"/index.theme
			echo "Size=64" >> "${THEME}"/index.theme
			echo $yy | grep -q '@' && echo "Scale=2" >> "${THEME}"/index.theme
			echo "Context=${py^}" >> "${THEME}"/index.theme
			echo "Type=fixed" >> "${THEME}"/index.theme
			;;
	esac
done < $TMP0
rm $TMP0
# move to 'icons' dir
mkdir -p icons
cp -arf "$THEME" icons