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#!/bin/bash
# 20091011 bkw: Wrapper script for sms_sdl, does the following:
# - Savestates and screenshots will be saved in ~/.sms_sdl/
# - A ~/.sms_sdl/config file will be read if present, and converted to
# command-line options for the real sms_sdl binary.
# To make things work properly, we have to run the real emulator binary
# with its cwd set to ~/.sms_sdl/, and create a symlink to the ROM file
# in the same directory. After the emu exits, we remove the symlink.
# 20160804 bkw: various fixes and enhancements.
# - Make --filter <mode> and --fskip <n> options work from
# the command line. They work already in a config file, which is why
# I didn't notice they were broken for *7 years*.
# - Fix the usage message so it doesn't show the /usr/libexec/ path.
# - Make the return value of the script match the return value of the emulator.
# - Add support for single-file zipped ROMs, since I have so many of them.
sms_exe="/usr/libexec/sms_sdl"
sms_userdir=~/.sms_sdl
conf_file="$sms_userdir/config"
romfile=""
conf_args=""
set -e
usage() {
$sms_exe | sed "/^Usage:/s,$sms_exe,sms_sdl,"
}
unzip_rom() {
# extract one file (hopefully a ROM image) from a zip file. if there are
# more files (ROMs or otherwise), they will be ignored.
# look for known filename extensions first, in case there are readme or
# file_id or whatever inside the zipfile.
romfile="$( zipinfo -1 "$1" | egrep -i '\.(sms|gg|rom|bin)$' | head -1 )"
# if none found, just grab the first filename and hope for the best.
if [ -z "$romfile" ]; then
romfile="$( zipinfo -1 "$1" | head -1 )"
fi
unzip "$arg" "$romfile" -d $sms_userdir || exit 1
}
mkdir -p $sms_userdir
# 20211025 bkw: if there's no config file, create one.
if [ ! -e "$conf_file" ]; then
cat > "$conf_file" <<EOF
joystick
fm
filter 2x
EOF
fi
if [ -e "$conf_file" ]; then
while read line; do
# remove comments
line="${line/\#*/}"
case "$line" in
"") ;; # ignore empty lines
-*)
conf_args="$conf_args $line"
;;
*)
conf_args="$conf_args --$line"
;;
esac
done < "$conf_file"
fi
for arg; do
if [ "$needparam" = "1" ]; then
conf_args="$conf_args $arg"
needparam=0
else
case "$arg" in
-h|-help|--help|-\?)
usage
exit 0
;;
--filter|--fskip)
conf_args="$conf_args $arg"
needparam=1
;;
--*)
conf_args="$conf_args $arg"
;;
*)
if [ -z "$romfile" ]; then
case "$arg" in
*.zip|*.ZIP*|*.Zip)
unzip_rom "$arg" # sets romfile
;;
*)
arg="$( readlink -f "$arg" )"
romfile="$( basename "$arg" )"
( cd $sms_userdir ; rm -f "$romfile" ; ln -s "$arg" . )
esac
fi
;;
esac
fi
done
set +e
if [ -z "$romfile" ]; then
usage
exit 1
else
cd $sms_userdir
#echo $sms_exe $conf_args "$romfile"
$sms_exe $conf_args "$romfile"
rv="$?"
rm -f "$romfile"
exit $rv
fi
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