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#!/bin/sh
setFileName(){
filename="$(readlink -f "$1")"
filebase="$(basename "$filename")"
extension="${filebase##*.}"
}
getSfrom(){
local rom="$(hexdump -e '1/4 "%u"' -s8 -n4 "$1")"
local footer="$(hexdump -e '1/4 "%u"' -s20 -n4 "$1")"
local size="$(hexdump -e '1/4 "%u"' -s$((footer+1)) -n4 "$1")"
dd "status=none" "if=$1" "iflag=skip_bytes" "skip=$rom" "bs=$size" "count=1"
}
setFileName "$1"
shift
tmppath="/tmp/rom"
rm -rf "$tmppath"
mkdir -p "$tmppath"
cd "$tmppath"
if [ "$extension" = "7z" ]; then
tiny7zx x "$filename"
filename="$tmppath/$(ls | head -n1)"
filename_str="${filename// /_}"
mv "$filename" "$filename_str"
setFileName "$filename_str"
fi
if [ "$extension" = "sfrom" ]; then
filename_str="$filebase.sfc"
getSfrom "$filename" > "$filename_str"
setFileName "$filename_str"
fi
exec retroarch-clover snes9x2002 "$filename" "$@"
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