process_shaders.sh

#!/bin/sh

##
## Bash scrip to conver .fs / .vs files into .ts string
##

STR_OUT_FILE="shader_source.ts"
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" > /dev/null 2>&1 && pwd )"
GLSL_DIR="$DIR/src/render_engine/shader/glsl"
GLSL_FILES=($( cd $GLSL_DIR && ls *.vs *.fs))
OUTPUT="$GLSL_DIR/$STR_OUT_FILE"

# extract name from name.fs/.vs
extracted_name=''
extract_str_name() {
	while IFS='.' read -ra name
	do
		extracted_name="${name[0]}_${name[1]}"
		return;
	done <<< "$1"
	echo "Couldnt extract string name from $file_name"
	exit -1;
}

main() {
	# remove old shader_source.ts
	if [ -e $OUTPUT ]; then
		rm $OUTPUT 2> /dev/null
	fi

	# print message
	echo "// DO NOT EDIT MANUALLY: Auto generated by process_shaders.sh" >> $OUTPUT

	# loop through all the files
	for i in ${GLSL_FILES[@]}
	do
		glsl_file="$GLSL_DIR/$i"
		extract_str_name $i
		printf "export const $extracted_name=\`" >> $OUTPUT
		while IFS='' read -ra line || [[ -n "$line" ]]
		do
			printf "$line\n" >> $OUTPUT
		done < "$glsl_file"
		printf "\`\n" >> $OUTPUT
	done
}

main