opensde-nopast/lib/libsde.in

# --- SDE-COPYRIGHT-NOTE-BEGIN ---
# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
#
# Filename: lib/libsde.in
# Copyright (C) 2006 - 2016 The OpenSDE Project
#
# More information can be found in the files COPYING and README.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License. A copy of the
# GNU General Public License can be found in the file COPYING.
# --- SDE-COPYRIGHT-NOTE-END ---

[ -n "$SDEROOT" ] || SDEROOT='.'
export SDEROOT

# determine the version
#
sdever=$("$SDEROOT/lib/version.sh")

. $SDEROOT/lib/term-functions.in

# default settings
#
if [ -z "$SDESETTINGS" ]; then
	if [ -n "$SUDO_USER" ]; then
		SDESETTINGS="$( grep -m 1 "^$SUDO_USER:" /etc/passwd | cut -d: -f6)/.sde/settings"
	else
		SDESETTINGS="$HOME/.sde/settings"
	fi
	export SDESETTINGS
fi

if [ ! -e "$SDESETTINGS" ]; then
	mkdir -p "${SDESETTINGS%/*}"
	touch "$SDESETTINGS"
	chmod 600 "$SDESETTINGS"
fi

# how to `echo -e` on this /bin/sh
#
if [ "$(echo -e foo)" = "foo" ]; then
	export ECHO_E="echo -e"
else
	export ECHO_E="echo"
fi

# LOCK/UNLOCK facility
#
# FIXME: we must trap Ctrl-C on lock(), and restore the previous
#        trap state after unlocking
lock() {
	while ! ln -s "$1" "$1.lock" 2> /dev/null; do
		sleep 1;
	done
}

unlock() {
	rm "$1.lock"
}