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https://github.com/a2-4am/4cade.git
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66 lines
2.1 KiB
Bash
Executable File
66 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
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# run from project root directory
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# flags
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# -p pad merged file size to next block size (default off)
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# parameters
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# 1 - input filename of text file containing list of effects (probably FX.CONF or DFX.CONF)
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# 2 - output filename for index file
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# 3 - output filename for merged-effects file
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# 4 - input directory of (previously assembled) effects files
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pad=false
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while getopts ":p:" opt; do
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case $opt in
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p) pad=true
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shift
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;;
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esac
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done
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# create merged data file if it doesn't exist, but do not truncate it
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# (we may call this script more than once with the same data file)
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touch "$3"
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# make temp file with list of effect names
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records=$(mktemp)
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awk '!/^$|^#|^\[/ { print }' < "$1" > "$records"
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# make temp assembly source file that represents the binary OKVS data structure
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source=$(mktemp)
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(echo "*=0" # dummy program counter for assembler
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echo "!le16 $(wc -l <"$records"), 0" # OKVS header
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while read -r key; do
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echo "!byte ${#key}+7" # OKVS record length
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echo "!byte ${#key}" # OKVS key length
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echo "!text \"$key\"" # OKVS key (effect name)
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offset=$(wc -c < "$3")
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echo "!be24 $offset" # offset into merged-effects file
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echo -n "!le16 "
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# If offset+size does not cross a block boundary, use the size.
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# Otherwise, round up size to the next block boundary.
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# This padding does not get added to the file; it is just an
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# optimization to avoid a partial copy on the last block read.
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size=$(wc -c < "$4/$key")
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if [ "$pad" = true ]; then
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if [ $(($offset / 512)) -eq $((($offset + $size) / 512)) ]; then
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echo "$size"
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else
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echo "$(((($offset + $size + 511) & -512) - $offset))"
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fi
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else
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echo "$size"
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fi
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cat "$4/$key" >> "$3" # add effect code into merged-effects file
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# (all effects were previously assembled)
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done < "$records") > "$source"
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# assemble temp source file to create binary OKVS data structure
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acme -o "$2" "$source"
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# clean up
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rm "$source"
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rm "$records"
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