From 222d371ae9448a5c163e3df9f58225e7f1e1f6fd Mon Sep 17 00:00:00 2001
From: Lucio Andrés Illanes Albornoz (arab, vxp) <l.illanes@gmx.de>
Date: Sep 12 2016 16:40:56 +0000
Subject: Adds midipix_check.sh and a simplified midipix.sh.


---

diff --git a/998.midipix_sh.build b/998.midipix_sh.build
index a44b7c9..f6a9c22 100644
--- a/998.midipix_sh.build
+++ b/998.midipix_sh.build
@@ -4,7 +4,7 @@
 
 if ! is_build_script_done install; then
 	(cd ${MIDIPIX_BUILD_PWD};
-	tar -cpf - midipix.sh README					\
+	tar -cpf - midipix_check.sh midipix.sh README			\
 			'Create `Midipix mintty shell'\'' shortcut.vbs'	|\
 		tar -C ${PREFIX} -xpf -);
 	chmod +x ${PREFIX}/midipix.sh;
diff --git a/midipix.sh b/midipix.sh
index f40f2c5..65913c4 100755
--- a/midipix.sh
+++ b/midipix.sh
@@ -1,114 +1,40 @@
 #!/bin/sh
-#
 
-prepend_path() {
-	local _pname _pname_prepend="${1}" IFS=":";
-	for _pname in ${PATH}; do
-		if [ "${_pname}" = "${_pname_prepend}" ]; then
-			return;
-		fi;
-	done; export PATH="${_pname_prepend}${PATH:+:${PATH}}";
-};
-
-convert_links_ask() {
-	local _ _link_name _link_target;
-	echo "Warning: ${MIDIPIX_PATH}/native/lib contains shared objects (library"
-	echo "images) that are symbolic links. This is not supported by Midipix at"
-	echo "present and commonly occurs if the binary distribution tarball was"
-	echo "extracted by an application that does not support symbolic links"
-	echo "correctly. This also occurs when a binary distribution was built locally."
-	printf "Convert all shared object symbolic links to hard links? (y|N) ";
-	read __;
-	case "${__}" in
-		[yY])	break; ;;
-		*)	echo "Exiting."; exit 6; ;;
-	esac;
-	for _link_name in $(find ${MIDIPIX_PATH}/native/lib		\
-			-maxdepth 1 -name \*.so -type l); do
-		_link_target="$(readlink -- "${_link_name}")";
-		if [ -f "${MIDIPIX_PATH}/native/lib/${_link_target}" ]; then
-			echo rm -f -- "${_link_name}";
-			rm -f -- "${_link_name}";
-			echo ln -f -- "${_link_target}" "${_link_name}";
-			ln -f -- "${_link_target}" "${_link_name}";
-		fi;
-	done;
-};
-
-check_prereq_files() {
-	local _fname;
-	for _fname in	${MIDIPIX_DNAME_ROOT}/bin/ntctty.exe		\
-			${MIDIPIX_DNAME_ROOT}/bin/chroot		\
-			${MIDIPIX_DNAME_ROOT}/bin/env			\
-			${MIDIPIX_DNAME_ROOT}/bin/bash; do
-		if [ ! -e ${MIDIPIX_PATH}/${_fname} ]; then
-			return 1;
-		fi;
-	done;
-};
-
-prepend_path /bin;
-while [ ${#} -gt 0 ]; do
-	if [ "${1}" = -h ]; then
-		echo "usage: $0 [-h] [-l] [-m] [Cygwin pathname to Midipix root]";
-		echo "       -l: tail(1) -f libpsxscl.log";
-		echo "       -m: use Minipix root";
-		exit 0;
-	elif [ "${1}" = -l ]; then
-		ARG_TAILF_LOG=1; shift;
-	elif [ "${1}" = -m ]; then
-		ARG_MINIPIX=1; shift;
-		MIDIPIX_DNAME_ROOT=minipix;
-	elif [ "${1#-}" = "${1}" ]; then
-		MIDIPIX_PATH="${1}";
-	fi;
-done;
-if [ -z "${MIDIPIX_PATH}" ]; then
-	MIDIPIX_PATH="$(cygpath -am .)" || exit 1;
-fi;
-UNAME_OS="$(uname -o)" || exit 2;
-if [ "${MIDIPIX_PATH#*[ 	]*}" != "${MIDIPIX_PATH}" ]; then
-	echo "Error: drive_letter/dirname must not contain SP (\` ') or VT (\`\\\t') characters.";
-	exit 3;
-elif [ ! -d ${MIDIPIX_PATH} ]; then
-	echo "Error: Midipix path non-existent or invalid (\`${MIDIPIX_PATH}'.)";
-	exit 4;
-elif [ -z "${MIDIPIX_DNAME_ROOT}" ]; then
-	if [ -e ${MIDIPIX_PATH}/native ]; then
-		MIDIPIX_DNAME_ROOT=native;
-	elif [ -e ${MIDIPIX_PATH}/minipix ]; then
-		MIDIPIX_DNAME_ROOT=minipix;
-	else
-		echo "Error: neither \`${MIDIPIX_PATH}/native' nor \`${MIDIPIX_PATH}/minipix' exist.";
-		exit 5;
-	fi;
+set -o noglob;
+if [ -z "${PATH##/bin:*}"					\
+-a   -z "${PATH##*:/bin:*}"					\
+-a   -z "${PATH##*:/bin}" ]; then
+	export PATH="/bin${PATH:+:${PATH}}";
 fi;
-if [ \( "${ARG_MINIPIX:-0}" -eq 0 \) -a				\
-		\( -n "${NATIVE_LIB_LINKS:=$(find ${MIDIPIX_PATH}/native/lib -maxdepth 1 -name \*.so -type l -print -quit)}" \) ]; then
-	convert_links_ask || exit 7;
+while getopts m __; do
+case ${__} in
+m)	MIDIPIX_DNAME_DIST=minipix; ;;
+*)	echo "usage: $0 [-m] [Cygwin pathname to Midipix root]";
+	echo "       -m: use Minipix distribution"; exit 0;
+esac; done;
+if [ -n "${1}" ]; then
+	MIDIPIX_PATH:=$(cygpath -am "${1}"); cd ${MIDIPIX_PATH} || exit 1;
 else
-	check_prereq_files || exit 8;
-	if [ -f ${MIDIPIX_PATH}/libpsxscl.log ]; then
-		echo Found libpsxscl.log, copying to ${MIDIPIX_PATH}/libpsxscl.last.
-		cp -p -- ${MIDIPIX_PATH}/libpsxscl.log			\
-			${MIDIPIX_PATH}/libpsxscl.last || exit 9;
-	fi;
-	echo "Absolute Midipix pathname: ${MIDIPIX_PATH}";
-	if [ "${UNAME_OS}" = "Msys" ]; then
-		export MSYS2_ARG_CONV_EXCL="*";
-	fi;
-	mintty -h always -s 120,80 -e /bin/sh -c "
-		set -o errexit; stty raw -echo;
-		cd ${MIDIPIX_PATH};					\
-		env PATH=${MIDIPIX_PATH}/${MIDIPIX_DNAME_ROOT}/lib	\
-		${MIDIPIX_DNAME_ROOT}/bin/ntctty.exe -e			\
-			chroot ${MIDIPIX_DNAME_ROOT}			\
-			/bin/env PATH=/bin:/lib				\
-			bash" &
-	sleep 0.25;
-	NTCTTY_PID="$(ps -W | awk '$NF ~ /ntctty\.exe$/{print $1}')";
-	echo "ntctty PID               : ${NTCTTY_PID}";
-	if [ ${ARG_TAILF_LOG:-0} -eq 1 ]; then
-		tail -f ${MIDIPIX_PATH}/${MIDIPIX_DNAME_ROOT}/bin/libpsxscl.log;
+	MIDIPIX_PATH:=$(cygpath -am .);
+fi;
+printf "%-35s: %s\n" "Absolute Midipix pathname" "${MIDIPIX_PATH}";
+printf "%-35s: %s\n" "Distribution name" "${MIDIPIX_DNAME_DIST:=native}";
+if [ -f libpsxscl.log ]; then
+	echo Found libpsxscl.log, copying to libpsxscl.last.
+	if ! cp -p -- libpsxscl.log libpsxscl.last; then
+		echo "(cp(1) returned ${?}, ignored.)";
 	fi;
 fi;
+if [ "$(uname -o)" = "Msys" ]; then
+	export MSYS2_ARG_CONV_EXCL="*";
+fi;
+mintty -h always -s 120,80 -e /bin/sh -c "
+	set -o errexit;
+	env PATH=${MIDIPIX_PATH}/${MIDIPIX_DNAME_DIST}/lib		\
+	${MIDIPIX_DNAME_DIST}/bin/ntctty.exe -e				\
+		${MIDIPIX_DNAME_DIST}/bin/chroot ${MIDIPIX_DNAME_DIST}	\
+		/bin/env PATH=/bin:/lib bash" &
+sleep ${SLEEP_DELAY:=0.25};
+printf "%-35s: %s\n" "ntctty PID" "$(ps -W | awk '$NF ~ /ntctty\.exe$/{print $1}')";
+
+# vim:filetype=sh
diff --git a/midipix_check.sh b/midipix_check.sh
new file mode 100755
index 0000000..f669de4
--- /dev/null
+++ b/midipix_check.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+
+set -o errexit -o noglob;
+if [ "${1}" = "-m" ]; then
+	MIDIPIX_DNAME_DIST=minipix; shift;
+fi;
+if [ -n "${1}" ]; then
+	MIDIPIX_PATH=$(cygpath -am "${1}");
+else
+	MIDIPIX_PATH=$(cygpath -am .);
+fi;
+: ${MIDIPIX_DNAME_DIST:=native};
+echo "Absolute Midipix pathname: ${MIDIPIX_PATH}";
+echo "Distribution name        : ${MIDIPIX_DNAME_DIST}";
+printf "%-85s" "Checking if all binaries are present...";
+for __ in chroot env ntctty.exe; do
+	if [ ! -e ${MIDIPIX_PATH}/${MIDIPIX_DNAME_DIST}/bin/${__} ]; then
+		printf "\nerror: missing file ${MIDIPIX_PATH}/${MIDIPIX_DNAME_DIST}/bin/${__}\n";
+		exit 2;
+	fi;
+done;
+printf "\033[97m[  \033[92mOK  \033[97m]\033[0m\n";
+printf "%-85s" "Checking ${MIDIPIX_PATH}/${MIDIPIX_DNAME_DIST}/lib for symbolic links...";
+if [ -n "$(find ${MIDIPIX_DNAME_DIST}/lib					\
+		-maxdepth 1 -name \*.so -type l -print -quit)" ]; then
+	echo;
+	echo "Warning: ${MIDIPIX_PATH}/${MIDIPIX_DNAME_DIST}/lib contains shared objects (library"
+	echo "images) that are symbolic links. This is not supported by Midipix at"
+	echo "present and commonly occurs if the binary distribution tarball was"
+	echo "extracted by an application that does not support symbolic links"
+	echo "correctly. This also occurs when a binary distribution was built locally."
+	printf "Convert all shared object symbolic links to hard links? (y|N) ";
+	read __;
+	case "${__}" in
+		[yY])	break; ;;
+		*)	echo "Exiting."; exit 3; ;;
+	esac;
+	for LINK_NAME in $(find ${MIDIPIX_PATH}/${MIDIPIX_DNAME_DIST}/lib	\
+			-maxdepth 1 -name \*.so -type l); do
+		LINK_TARGET="$(readlink -- "${LINK_NAME}")";
+		if [ -f "${MIDIPIX_PATH}/native/lib/${LINK_TARGET}" ]; then
+			echo rm -f -- "${LINK_NAME}";
+			rm -f -- "${LINK_NAME}";
+			echo ln -f -- "${LINK_TARGET}" "${LINK_NAME}";
+			ln -f -- "${LINK_TARGET}" "${LINK_NAME}";
+		fi;
+	done;
+fi;
+printf "\033[97m[  \033[92mOK  \033[97m]\033[0m\n";
+
+# vim:filetype=sh