Revelation / install-sh

#!/bin/sh

#

# install - install a program, script, or datafile

#

# This originates from X11R5 (mit/util/scripts/install.sh), which was

# later released in X11R6 (xc/config/util/install.sh) with the

# following copyright and license.

#

# Copyright (C) 1994 X Consortium

#

# Permission is hereby granted, free of charge, to any person obtaining a copy

# of this software and associated documentation files (the "Software"), to

# deal in the Software without restriction, including without limitation the

# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

# sell copies of the Software, and to permit persons to whom the Software is

# furnished to do so, subject to the following conditions:

#

# The above copyright notice and this permission notice shall be included in

# all copies or substantial portions of the Software.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE

# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-

# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#

# Except as contained in this notice, the name of the X Consortium shall not

# be used in advertising or otherwise to promote the sale, use or other deal-

# ings in this Software without prior written authorization from the X Consor-

# tium.

#

#

# FSF changes to this file are in the public domain.

#

# 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;;

    esac

done

if [ x"$src" = x ]

then

	echo "$0: no input file specified" >&2

	exit 1

else

	:

fi

if [ x"$dir_arg" != x ]; then

	dst=$src

	src=""

	if [ -d "$dst" ]; then

		instcmd=:

		chmodcmd=""

	else

		instcmd=$mkdirprog

	fi

else

# 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 "$src" ] || [ -d "$src" ]

	then

		:

	else

		echo "$0: $src does not exist" >&2

		exit 1

	fi

	if [ x"$dst" = x ]

	then

		echo "$0: no destination specified" >&2

		exit 1

	else

		:

	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

		:

	fi

fi

## this sed command emulates the dirname command

dstdir=`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" ]; then

defaultIFS='

	'

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=$oIFS

pathcomp=''

while [ $# -ne 0 ] ; do

	pathcomp=$pathcomp$1

	shift

	if [ ! -d "$pathcomp" ] ;

        then

		$mkdirprog "$pathcomp"

	else

		:

	fi

	pathcomp=$pathcomp/

done

fi

if [ x"$dir_arg" != x ]

then

	$doit $instcmd "$dst" &&

	if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dst"; else : ; fi &&

	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dst"; else : ; fi &&

	if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dst"; else : ; fi &&

	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dst"; else : ; fi

else

# 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

		:

	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 :;fi &&

	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dsttmp"; else :;fi &&

	if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dsttmp"; else :;fi &&

	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dsttmp"; else :;fi &&

# Now remove or move aside 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 "$0: cannot unlink or rename $dstdir/$dstfile" >&2

		  (exit 1); exit

		}

	else

		:

	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

}