#!/bin/sh

#

MIDIPIX_PATH_DEFAULTS="/c/Midipix /z";

if [ "${1}" = -h ]; then

        echo "usage: $0 [drive_letter [dirname]]";

        exit 1;

elif [ ${#} -eq 0 ]; then

for MIDIPIX_PATH in ${MIDIPIX_PATH_DEFAULTS}; do

	[ -d /cygdrive${MIDIPIX_PATH} ] || continue;

	MIDIPIX_DRIVE=${MIDIPIX_PATH#/};

	MIDIPIX_DRIVE=${MIDIPIX_DRIVE%%/*};

	MIDIPIX_PNAME=${MIDIPIX_PATH#/${MIDIPIX_DRIVE}};

	MIDIPIX_PNAME=${MIDIPIX_PNAME#/};

	break;

done;

else

	MIDIPIX_DRIVE="${1}"; MIDIPIX_PNAME="${2}";

	if [ "${MIDIPIX_DRIVE#*[ 	]*}" != "${MIDIPIX_DRIVE}" ]\

	|| [ "${MIDIPIX_PNAME#*[ 	]*}" != "${MIDIPIX_PNAME}" ]; then

		echo "Error: drive_letter/dirname must not contain SP (\` ') or VT (\`\\\t') characters.";

		exit 1;

	fi;

fi;

MIDIPIX_PATH=/${MIDIPIX_DRIVE}${MIDIPIX_PNAME:+/${MIDIPIX_PNAME}};

if [ ! -d /cygdrive${MIDIPIX_PATH} ]; then

	echo "Error: Midipix path non-existent or invalid (\`${MIDIPIX_PATH}'.)";

	exit 1;

else

	if [ -f /cygdrive${MIDIPIX_PATH}/bin/libpsxscl.log ]; then

		echo Found libpsxscl.log, copying to /cygdrive${MIDIPIX_PATH}/bin/libpsxscl.last.

		cp /cygdrive${MIDIPIX_PATH}/bin/libpsxscl.log	\

			/cygdrive${MIDIPIX_PATH}/bin/libpsxscl.last;

	fi;

	echo "Midipix drive letter.....: ${MIDIPIX_DRIVE}";

	echo "Midipix pathname.........: ${MIDIPIX_PNAME}";

	echo "Absolute Midipix pathname: ${MIDIPIX_PATH}";

	echo --------------------------------------------------------

	echo WARNING: The cygdrive path prefix will be changed to /

	echo whilst the Midipix shell window is running. It will be

	echo reset to its original value of /cygdrive after it exits.

	echo --------------------------------------------------------

	mintty -h always -e /bin/sh -c "

		set -o errexit; stty raw -echo;

		mount --change-cygdrive-prefix /;

		cd ${MIDIPIX_PATH}/native/bin;

		export PATH=${MIDIPIX_PATH}/native/bin:${MIDIPIX_PATH}/native/lib;

		./ntctty.exe -e chroot //${MIDIPIX_PATH#/}/native /bin/bash";

	echo --------------------------------------------------------

	echo Resetting cygdrive path prefix to /.

	echo --------------------------------------------------------

	mount --change-cygdrive-prefix /cygdrive;

fi;