erosinstall

C++ 编写的EROS RTOS

#!/bin/sh
#
# Copyright (C) 1998, 1999, Jonathan S. Shapiro.
#
# This file is part of the EROS Operating System.
#
# 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; either version 2,
# or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#

#
# This script is command-line compatible with the LINUX install utility,
# but avoids unnecessary copies by checking for actual changes before
# installing the file.
#
# A useful trick that this program takes advantage of is that
# running chmod/chown do NOT change a file's modification time.
#
# install can be invoked as:
#
#	install [options] -d dir_name ...
#	install [options] [ -s ] file inst_file
#	install [options] [ -s ] file... inst_dir
#
# where the 'options' are:
#
#	[-c] [-g group] [-m mode] [-o owner]
#
# we do not support the gnuish style options.
#
# Note that BSD install destroys the source file (idiots) unless
# you pass '-c', so in non-directory cases we pass '-c'.
#

group=`id -n -g`
owner=`id -n -u`
if [ -e /bin/chown ]
then
	chown=/bin/chown
elif [ -e /usr/sbin/chown ]
then
	chown=/usr/sbin/chown
else
	echo "chown not found"
	exit 1
fi

cflag="-c"

dfltmode=0644	# unless directory
html=no

set -- `getopt cdhg:m:o: $*`
for i in $*
do
	case $i in
	-c)	cflag=""; shift;;  # no sense passing it twice
	-s)	strip="-s"; shift;;
	-d)	dir="-d"; dfltmode="0755"; shift;;
	-m)	mode=$2; shift; shift;;
	-g)	group=$2; shift; shift;;
	-o)	owner=$2; shift; shift;;
	-h)	html="yes"; shift;;
	--)	shift; break;;
	esac
done

mode=${mode:-${dfltmode}}

# SHELL FUNCTIONS NOT SUPPORTED UNDER TRUE /bin/sh!!!
#
#function install_file() {
#    local src=$1
#    local target=$2
#
#    if [ $html = "yes" ]
#    then
#	${EROS_ROOT}/src/build/lib/make/flatten-html < $src > inst-tmp.html
#	src="inst-tmp.html"
#    fi
#
#    if cmp -s $src $target
#    then
#	# content is identical - just make sure of the modes
#	chmod $mode $target
#	${chown} $owner.$group $target
#    else
#	install $cflag $strip -g $group -o $owner -m $mode $src $target
#    fi
#
#    if [ $html = "yes" ]
#    then
#	rm -f inst-tmp.html
#    fi
#}

if [ -n "$dir" ]
then
	if [ -n "$strip" ]
	then
		echo "erosinstall: -d and -s options mutually exclusive" >&2
		exit 1
	fi

	for d in $*
	do
		if [ -d $d ]
		then
			chmod $mode $d;
			${chown} $owner.$group $d
		else
			install -d -g $group -o $owner -m $mode $d
		fi
	done
elif [ $# -eq 2 ]
then
	target=$2
	src=$1

	if [ -d $target ]
	then
		target=$target/`basename $src`
	fi

	# install_file $src $target

	if [ $html = "yes" ]
	then
	    ${EROS_ROOT}/src/build/lib/make/flatten-html < $src > inst-tmp.html
	    src="inst-tmp.html"
	fi

	if cmp -s $src $target
	then
	    # content is identical - just make sure of the modes
	    chmod $mode $target
	    ${chown} $owner.$group $target
	else
	    install $cflag $strip -g $group -o $owner -m $mode $src $target
	fi

	if [ $html = "yes" ]
	then
	    rm -f inst-tmp.html
	fi
else
	if [ $# -lt 2 ]
	then
		echo erosinstall: insufficent arguments >&2
		exit 1
	fi

	while [ $# -gt 1 ]
	do
		# Following disGUSTing hack is to figure out what the
		# last argument is:
		for arg in $*
		do
			target=$arg;
		done
		# target is now last argument.

		target=$target/`basename $1`
		src=$1

		#install_file $src $target

		if [ $html = "yes" ]
		then
		    ${EROS_ROOT}/src/build/lib/make/flatten-html < $src > inst-tmp.html
		    src="inst-tmp.html"
		fi

		if cmp -s $src $target
		then
		    # content is identical - just make sure of the modes
		    chmod $mode $target
		    ${chown} $owner.$group $target
		else
		    install $cflag $strip -g $group -o $owner -m $mode $src $target
		fi

		if [ $html = "yes" ]
		then
		    rm -f inst-tmp.html
		fi

		shift
	done
fi