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#!/bin/sh
#
# run the gameboy emulator "bgb" in wine
#
# environment variables:
#   BGB_CONFIG_PATH=<path>      Override the path of the bgb.ini file
#   BGB_EXE_PATH=<path>         Override the path to bgb.exe
#   BGB_DEBUGMSG_DIR=<path>     Override the path where debugmsg*.txt will be saved
#   BGB_SAVE_DEBUGMSG=false     Don't save debugmsg*.txt files
#   BGB_SAVE_CONFIG=false       Don't save GUI configuration changes
set -e

if [ -z "$BGB_EXE_PATH" ]; then
    BGB_EXE_PATH=/usr/lib/bgb/bgb.exe
fi

if [ -z "$BGB_CONFIG_PATH" ]; then
    BGB_CONFIG_PATH="${XDG_CONFIG_HOME:-$HOME/.config}/bgb/bgb.ini"
fi

if [ -z "$BGB_DEBUGMSG_DIR" ]; then
    BGB_DEBUGMSG_DIR=.
fi

tmp="$(mktemp -d)"
cp "$BGB_EXE_PATH" "$tmp/bgb.exe"

if [ -e "$BGB_CONFIG_PATH" ]; then
    cp "$BGB_CONFIG_PATH" "$tmp/bgb.ini"
fi

wine "$tmp/bgb.exe" "$@"

if [ "$BGB_SAVE_DEBUGMSG" != false ]; then
    mkdir -p "$(dirname "$BGB_DEBUGMSG_DIR")"
    cp -t "$BGB_DEBUGMSG_DIR" "$tmp"/debugmsg*.txt 2>/dev/null || true
fi

if [ "$BGB_SAVE_CONFIG" != false ] && [ -e "$tmp/bgb.ini" ]; then
    mkdir -p "$(dirname "$BGB_CONFIG_PATH")"
    cp "$tmp/bgb.ini" "$BGB_CONFIG_PATH"
fi

rm -r "$tmp"