4cade/bin/buildtitle.sh

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2021-11-03 01:49:41 +00:00
#!/bin/bash
games=$(cat "$1")
# make temp file with just the key/value pairs (strip blank lines, comments, eof marker)
records=$(mktemp)
awk '!/^$|^#|^\[/' > "$records"
# make temp assembly source file that represents the binary OKVS data structure
source=$(mktemp)
(echo "*=0" # dummy program counter for assembler
echo "!le16 $(wc -l <"$records"), 0" # OKVS header
while read -r filename; do
line=$(echo "$games" | awk '/,'"$filename"'=/')
needsjoystick=$(echo "$line" | cut -c1) # 'requires joystick' flag (0 or 1)
needs128k=$(echo "$line" | cut -c2) # 'requires 128K' flag (0 or 1)
echo "!byte ${#filename}+3" # OKVS record length
echo "!byte ${#filename}" # OKVS key length
echo "!text \"$filename\"" # OKVS key
[ -z "$line" ] && \
echo "!byte 0" || \
echo "!byte $((needsjoystick*128))+$((needs128k*64))"
done < "$records") > "$source"
# assemble temp source file into binary OKVS data structure, then output that
out=$(mktemp)
acme -o "$out" "$source"
cat "$out"
# clean up
rm "$out"
rm "$source"
rm "$records"