2089860135
NetBSD version is a feature-to-feature re-implementation of GNU gzip using the freely-redistributable zlib and this version is expected to be mostly bug-to-bug compatible with the GNU implementation. - Because this is a piece of mature code and we want to make changes so it is added directly rather than importing to src/contrib. - Connect newly added code to src/usr.bin/ and rescue/rescue build. - Disconnect the GNU gzip code from build for now, they will be eventually removed completely. - Provide two new src.conf(5) knobs, WITHOUT_BZIP2_SUPPORT and WITHOUT_BZIP2. Tested by: kris (full exp-7 pointyhat build) Approved by: core (importing a 4-clause BSD licensed file) Approved by: re (adding new utility during -HEAD code slush)
139 lines
3.2 KiB
Bash
139 lines
3.2 KiB
Bash
#!/bin/ksh -
|
|
#
|
|
# $NetBSD: znew,v 1.2 2003/12/28 12:43:43 wiz Exp $
|
|
# $OpenBSD: znew,v 1.2 2003/08/05 18:22:17 deraadt Exp $
|
|
#
|
|
#-
|
|
# Copyright (c) 2003 Otto Moerbeek <otto@drijf.net>
|
|
#
|
|
# Permission to use, copy, modify, and distribute this software for any
|
|
# purpose with or without fee is hereby granted, provided that the above
|
|
# copyright notice and this permission notice appear in all copies.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
#
|
|
# $FreeBSD$
|
|
|
|
# Return 0 if the first arg file size is smaller than the second, 1 otherwise.
|
|
smaller () {
|
|
a=`du -k "$1" | awk '{ print $1 }'`
|
|
b=`du -k "$2" | awk '{ print $1 }'`
|
|
test $a -lt $b
|
|
}
|
|
|
|
# Check gzip integrity if the -t flag is specified
|
|
checkfile () {
|
|
if test $tflag -eq 1; then
|
|
gzip -qt < "$1"
|
|
fi
|
|
}
|
|
|
|
# Decompress a file and then gzip it
|
|
process () {
|
|
prefix="${1%.Z}"
|
|
filez="$prefix".Z
|
|
filegz="$prefix".gz
|
|
|
|
if test ! -e "$filez"; then
|
|
echo "$prog: $filez does not exist"
|
|
return 1
|
|
fi
|
|
if test ! -f "$filez"; then
|
|
echo "$prog: $filez is not a regular file"
|
|
return 1
|
|
fi
|
|
if test -e "$filegz" -a $fflag -eq 0; then
|
|
echo "$prog: $filegz already exists"
|
|
return 1
|
|
fi
|
|
|
|
tmp=`mktemp /tmp/znewXXXXXXXXXX` || {
|
|
echo "$prog: cannot create tmp file"
|
|
return 1
|
|
}
|
|
trap 'rm -f "$tmp"; exit 1' HUP INT QUIT PIPE TERM
|
|
|
|
# Do the actual work, producing a file "$tmp"
|
|
if uncompress -f -c < "$filez" | gzip -f $gzipflags -o "$tmp"; then
|
|
|
|
if test $kflag -eq 1 && smaller "$filez" "$tmp"; then
|
|
echo -n "$prog: $filez is smaller than $filegz"
|
|
echo "; keeping it"
|
|
rm -f "$tmp"
|
|
return 0
|
|
fi
|
|
if ! checkfile "$tmp"; then
|
|
echo "$prog: integrity check of $tmp failed"
|
|
rm -f "$tmp"
|
|
return 1;
|
|
fi
|
|
|
|
# Try to keep the mode of the original file
|
|
if ! cp -fp "$filez" "$filegz"; then
|
|
echo "$prog: warning: could not keep mode of $filez"
|
|
fi
|
|
if ! cp "$tmp" "$filegz" 2> /dev/null; then
|
|
echo "$prog: warning: could not keep mode of $filez"
|
|
if ! cp -f "$tmp" "$filegz" 2> /dev/null; then
|
|
echo "$prog: could not copy $tmp to $filegz"
|
|
rm -f "$filegz" "$tmp"
|
|
return 1
|
|
fi
|
|
fi
|
|
if ! touch -fr "$filez" "$filegz"; then
|
|
echo -n "$prog: warning: could not keep timestamp of "
|
|
echo "$filez"
|
|
fi
|
|
rm -f "$filez" "$tmp"
|
|
else
|
|
echo "$prog: failed to process $filez"
|
|
rm -f "$tmp"
|
|
return 1
|
|
fi
|
|
}
|
|
|
|
prog=`basename "$0"`
|
|
usage="usage: $prog [-ftv9K] file ..."
|
|
|
|
fflag=0
|
|
tflag=0
|
|
kflag=0
|
|
gzipflags=
|
|
|
|
# -P flag is recognized to maintain compatibility, but ignored. Pipe mode is
|
|
# always used
|
|
while getopts :ftv9PK i; do
|
|
case $i in
|
|
f) fflag=1;;
|
|
t) tflag=1;;
|
|
v) gzipflags="-v $gzipflags";;
|
|
9) gzipflags="-9 $gzipflags";;
|
|
P) ;;
|
|
K) kflag=1;;
|
|
\?) echo "$usage"; exit 1;;
|
|
esac
|
|
done
|
|
|
|
shift OPTIND-1
|
|
|
|
if test $# -eq 0; then
|
|
echo "$usage"
|
|
exit 1
|
|
fi
|
|
|
|
rc=0
|
|
|
|
while test $# -ne 0; do
|
|
if ! process "$1"; then
|
|
rc=$?
|
|
fi
|
|
shift
|
|
done
|
|
exit $rc
|