DaPortal
#!/bin/sh
							#$Id$
							#Copyright (c) 2012-2020 Pierre Pronchery <khorben@defora.org>
							#
							#Redistribution and use in source and binary forms, with or without
							#modification, are permitted provided that the following conditions are met:
							#
							# * Redistributions of source code must retain the above copyright notice, this
							#   list of conditions and the following disclaimer.
							# * Redistributions in binary form must reproduce the above copyright notice,
							#   this list of conditions and the following disclaimer in the documentation
							#   and/or other materials provided with the distribution.
							#
							#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
							#AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
							#IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
							#DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
							#FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
							#DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
							#SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
							#CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
							#OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
							#OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
							#variables
							CONFIGSH="${0%/subst.sh}/../config.sh"
							PREFIX="/usr/local"
							BINDIR=
							DATADIR=
							INCLUDEDIR=
							LDSO=
							LIBDIR=
							LIBEXECDIR=
							MANDIR=
							PROGNAME="subst.sh"
							SYSCONFDIR=
							#executables
							CHMOD="chmod"
							DATE="date"
							DEBUG="_debug"
							DEVNULL="/dev/null"
							INSTALL="install"
							MKDIR="mkdir -m 0755 -p"
							RM="rm -f"
							SED="sed"
							[ -f "$CONFIGSH" ] && . "$CONFIGSH"
							#functions
							#subst
							_subst()
							{
								#check the variables
								if [ -z "$PACKAGE" ]; then
									_error "The PACKAGE variable needs to be set"
									return $?
								fi
								if [ -z "$VERSION" ]; then
									_error "The VERSION variable needs to be set"
									return $?
								fi
								[ -z "$BINDIR" ] && BINDIR="$PREFIX/bin"
								[ -z "$DATADIR" ] && DATADIR="$PREFIX/share"
								[ -z "$INCLUDEDIR" ] && INCLUDEDIR="$PREFIX/include"
								if [ -z "$LDSO" ]; then
									case "$(uname -s)" in
										FreeBSD)
											LDSO="/libexec/ld-elf.so.1"
										;;
										Linux)
											LDSO="/lib/ld-linux-$(uname -m | tr _ -).so.2"
											;;
										*)
											LDSO="/libexec/ld.elf_so"
											;;
									esac
								fi
								[ -z "$LIBDIR" ] && LIBDIR="$PREFIX/lib"
								[ -z "$LIBEXECDIR" ] && LIBEXECDIR="$PREFIX/libexec"
								[ -z "$MANDIR" ] && MANDIR="$DATADIR/man"
								if [ -z "$SYSCONFDIR" ]; then
									SYSCONFDIR="$PREFIX/etc"
									[ "$PREFIX" = "/usr" ] && SYSCONFDIR="/etc"
								fi
								while [ $# -gt 0 ]; do
									target="$1"
									shift
									#clean
									[ "$clean" -ne 0 ] && continue
									#uninstall
									if [ "$uninstall" -eq 1 ]; then
										$DEBUG $RM -- "$PREFIX/$target"		|| return 2
										continue
									fi
									#install
									if [ "$install" -eq 1 ]; then
										source="${target#$OBJDIR}"
										$DEBUG $MKDIR -- "$PREFIX"		|| return 2
										mode="-m 0644"
										[ -x "${source}.in" ] && mode="-m 0755"
										$DEBUG $INSTALL $mode "$target" "$PREFIX/$source" \
															|| return 2
										continue
									fi
									#create
									source="${target#$OBJDIR}"
									source="${source}.in"
									([ -z "$OBJDIR" ] || $DEBUG $MKDIR -- "${target%/*}") \
															|| return 2
									$DEBUG $SED -e "s;@PACKAGE@;$PACKAGE;g" \
										-e "s;@VERSION@;$VERSION;g" \
										-e "s;@PREFIX@;$PREFIX;g" \
										-e "s;@BINDIR@;$BINDIR;g" \
										-e "s;@DATADIR@;$DATADIR;g" \
										-e "s;@DATE@;$DATE;g" \
										-e "s;@INCLUDEDIR@;$INCLUDEDIR;g" \
										-e "s;@LDSO@;$LDSO;g" \
										-e "s;@LIBDIR@;$LIBDIR;g" \
										-e "s;@LIBEXECDIR@;$LIBEXECDIR;g" \
										-e "s;@MANDIR@;$MANDIR;g" \
										-e "s;@PWD@;$PWD;g" \
										-e "s;@SYSCONFDIR@;$SYSCONFDIR;g" \
										-- "$source" > "$target"
									if [ $? -ne 0 ]; then
										$RM -- "$target" 2> "$DEVNULL"
										return 2
									elif [ -x "$source" ]; then
										$DEBUG $CHMOD -- 0755 "$target"
									fi
								done
								return 0
							}
							#debug
							_debug()
							{
								echo "$@" 1>&3
								"$@"
							}
							#error
							_error()
							{
								echo "$PROGNAME: $@" 1>&2
								return 2
							}
							#usage
							_usage()
							{
								echo "Usage: $PROGNAME [-c|-i|-u][-P prefix] target..." 1>&2
								return 1
							}
							#main
							clean=0
							install=0
							uninstall=0
							while getopts "ciuO:P:" name; do
								case $name in
									c)
										clean=1
										;;
									i)
										uninstall=0
										install=1
										;;
									u)
										install=0
										uninstall=1
										;;
									O)
										export "${OPTARG%%=*}"="${OPTARG#*=}"
										;;
									P)
										PREFIX="$OPTARG"
										;;
									?)
										_usage
										exit $?
										;;
								esac
							done
							shift $(($OPTIND - 1))
							if [ $# -lt 1 ]; then
								_usage
								exit $?
							fi
							if [ -n "$SOURCE_DATE_EPOCH" ]; then
								DATE="$($DATE -d "@$SOURCE_DATE_EPOCH" '+%B %d, %Y')"
							else
								DATE="$($DATE '+%B %d, %Y')"
							fi
							exec 3>&1
							_subst "$@"
							