#!/bin/sh## install - install a program, script, or datafile# This comes from X11R5 (mit/util/scripts/install.sh).## Copyright 1991 by the Massachusetts Institute of Technology## Permission to use, copy, modify, distribute, and sell this software and its# documentation for any purpose is hereby granted without fee, provided that# the above copyright notice appear in all copies and that both that# copyright notice and this permission notice appear in supporting# documentation, and that the name of M.I.T. not be used in advertising or# publicity pertaining to distribution of the software without specific,# written prior permission.  M.I.T. makes no representations about the# suitability of this software for any purpose.  It is provided "as is"# without express or implied warranty.## Calling this script install-sh is preferred over install.sh, to prevent# `make' implicit rules from creating a file called install from it# when there is no Makefile.## This script is compatible with the BSD install script, but was written# from scratch.  It can only install one file at a time, a restriction# shared with many OS's install programs.# set DOITPROG to echo to test this script# Don't use :- since 4.3BSD and earlier shells don't like it.doit="${DOITPROG-}"# put in absolute paths if you don't have them in your path; or use env. vars.mvprog="${MVPROG-mv}"cpprog="${CPPROG-cp}"chmodprog="${CHMODPROG-chmod}"chownprog="${CHOWNPROG-chown}"chgrpprog="${CHGRPPROG-chgrp}"stripprog="${STRIPPROG-strip}"rmprog="${RMPROG-rm}"mkdirprog="${MKDIRPROG-mkdir}"transformbasename=""transform_arg=""instcmd="$mvprog"chmodcmd="$chmodprog 0755"chowncmd=""chgrpcmd=""stripcmd=""rmcmd="$rmprog -f"mvcmd="$mvprog"src=""dst=""dir_arg=""while [ x"$1" != x ]; do    case "$1" in	-c) instcmd=$cpprog	    shift	    continue;;	-d) dir_arg=true	    shift	    continue;;	-m) chmodcmd="$chmodprog $2"	    shift	    shift	    continue;;	-o) chowncmd="$chownprog $2"	    shift	    shift	    continue;;	-g) chgrpcmd="$chgrpprog $2"	    shift	    shift	    continue;;	-s) stripcmd=$stripprog	    shift	    continue;;	-t=*) transformarg=`echo $1 | sed 's/-t=//'`	    shift	    continue;;	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`	    shift	    continue;;	*)  if [ x"$src" = x ]	    then		src=$1	    else		# this colon is to work around a 386BSD /bin/sh bug		:		dst=$1	    fi	    shift	    continue;;    esacdoneif [ x"$src" = x ]then	echo "install:	no input file specified" >&2	exit 1else	truefiif [ x"$dir_arg" != x ]; then	dst=$src	src=""	if [ -d "$dst" ]; then		instcmd=:		chmodcmd=""	else		instcmd=$mkdirprog	fielse# Waiting for this to be detected by the "$instcmd $src $dsttmp" command# might cause directories to be created, which would be especially bad# if $src (and thus $dsttmp) contains '*'.	if [ -f "$src" -o -d "$src" ]	then		true	else		echo "install:  $src does not exist" >&2		exit 1	fi	if [ x"$dst" = x ]	then		echo "install:	no destination specified" >&2		exit 1	else		true	fi# If destination is a directory, append the input filename; if your system# does not like double slashes in filenames, you may need to add some logic	if [ -d "$dst" ]	then		dst=$dst/`basename "$src"`	else		true	fifi## this sed command emulates the dirname commanddstdir=`echo "$dst" | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`# Make sure that the destination directory exists.#  this part is taken from Noah Friedman's mkinstalldirs script# Skip lots of stat calls in the usual case.if [ ! -d "$dstdir" ]; thendefaultIFS='	'IFS="${IFS-$defaultIFS}"oIFS=$IFS# Some sh's can't handle IFS=/ for some reason.IFS='%'set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`IFS=$oIFSpathcomp=''while [ $# -ne 0 ] ; do	pathcomp=$pathcomp$1	shift	if [ ! -d "$pathcomp" ] ;        then		$mkdirprog "$pathcomp"	else		true	fi	pathcomp=$pathcomp/donefiif [ x"$dir_arg" != x ]then	$doit $instcmd "$dst" &&	if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dst"; else true ; fi &&	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dst"; else true ; fi &&	if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dst"; else true ; fi &&	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dst"; else true ; fielse# If we're going to rename the final executable, determine the name now.	if [ x"$transformarg" = x ]	then		dstfile=`basename "$dst"`	else		dstfile=`basename "$dst" $transformbasename |			sed $transformarg`$transformbasename	fi# don't allow the sed command to completely eliminate the filename	if [ x"$dstfile" = x ]	then		dstfile=`basename "$dst"`	else		true	fi# Make a couple of temp file names in the proper directory.	dsttmp=$dstdir/#inst.$$#	rmtmp=$dstdir/#rm.$$## Trap to clean up temp files at exit.	trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0	trap '(exit $?); exit' 1 2 13 15# Move or copy the file name to the temp name	$doit $instcmd $src "$dsttmp" &&# and set any options; do chmod last to preserve setuid bits# If any of these fail, we abort the whole thing.  If we want to# ignore errors from any of these, just make sure not to ignore# errors from the above "$doit $instcmd $src $dsttmp" command.	if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dsttmp";else true;fi &&	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dsttmp";else true;fi &&	if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dsttmp";else true;fi &&	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dsttmp";else true;fi &&# Now remove or move any old file at destination location.  We try this# two ways since rm can't unlink itself on some systems and the destination# file might be busy for other reasons.  In this case, the final cleanup# might fail but the new file should still install successfully.{	if [ -f "$dstdir/$dstfile" ]	then		$doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null ||		$doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null ||		{		  echo "install: cannot unlink or rename $dstdir/$dstfile" >&2		  (exit 1); exit		}	else		true	fi} &&# Now rename the file to the real destination.	$doit $mvcmd "$dsttmp" "$dstdir/$dstfile"fi &&# The final little trick to "correctly" pass the exit status to the exit trap.{	(exit 0); exit}