1cf99a6beSYaroslav Tykhiy#!/bin/sh - 29a9ea25fSXin LI# 3a9f1ad5dSXin LI# $NetBSD: znew,v 1.3 2008/04/27 09:07:13 nakayama Exp $ 49a9ea25fSXin LI# $OpenBSD: znew,v 1.2 2003/08/05 18:22:17 deraadt Exp $ 59a9ea25fSXin LI# 69a9ea25fSXin LI#- 79a9ea25fSXin LI# Copyright (c) 2003 Otto Moerbeek <otto@drijf.net> 89a9ea25fSXin LI# 99a9ea25fSXin LI# Permission to use, copy, modify, and distribute this software for any 109a9ea25fSXin LI# purpose with or without fee is hereby granted, provided that the above 119a9ea25fSXin LI# copyright notice and this permission notice appear in all copies. 129a9ea25fSXin LI# 139a9ea25fSXin LI# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 149a9ea25fSXin LI# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 159a9ea25fSXin LI# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 169a9ea25fSXin LI# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 179a9ea25fSXin LI# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 189a9ea25fSXin LI# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 199a9ea25fSXin LI# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 209a9ea25fSXin LI# 219a9ea25fSXin LI 229a9ea25fSXin LI# Return 0 if the first arg file size is smaller than the second, 1 otherwise. 239a9ea25fSXin LIsmaller () { 249a9ea25fSXin LI a=`du -k "$1" | awk '{ print $1 }'` 259a9ea25fSXin LI b=`du -k "$2" | awk '{ print $1 }'` 269a9ea25fSXin LI test $a -lt $b 279a9ea25fSXin LI} 289a9ea25fSXin LI 299a9ea25fSXin LI# Check gzip integrity if the -t flag is specified 309a9ea25fSXin LIcheckfile () { 319a9ea25fSXin LI if test $tflag -eq 1; then 329a9ea25fSXin LI gzip -qt < "$1" 339a9ea25fSXin LI fi 349a9ea25fSXin LI} 359a9ea25fSXin LI 369a9ea25fSXin LI# Decompress a file and then gzip it 379a9ea25fSXin LIprocess () { 389a9ea25fSXin LI prefix="${1%.Z}" 399a9ea25fSXin LI filez="$prefix".Z 409a9ea25fSXin LI filegz="$prefix".gz 419a9ea25fSXin LI 429a9ea25fSXin LI if test ! -e "$filez"; then 439a9ea25fSXin LI echo "$prog: $filez does not exist" 449a9ea25fSXin LI return 1 459a9ea25fSXin LI fi 469a9ea25fSXin LI if test ! -f "$filez"; then 479a9ea25fSXin LI echo "$prog: $filez is not a regular file" 489a9ea25fSXin LI return 1 499a9ea25fSXin LI fi 509a9ea25fSXin LI if test -e "$filegz" -a $fflag -eq 0; then 519a9ea25fSXin LI echo "$prog: $filegz already exists" 529a9ea25fSXin LI return 1 539a9ea25fSXin LI fi 549a9ea25fSXin LI 559a9ea25fSXin LI tmp=`mktemp /tmp/znewXXXXXXXXXX` || { 569a9ea25fSXin LI echo "$prog: cannot create tmp file" 579a9ea25fSXin LI return 1 589a9ea25fSXin LI } 599a9ea25fSXin LI trap 'rm -f "$tmp"; exit 1' HUP INT QUIT PIPE TERM 609a9ea25fSXin LI 619a9ea25fSXin LI # Do the actual work, producing a file "$tmp" 62cf99a6beSYaroslav Tykhiy if uncompress -f -c < "$filez" | gzip -f -c $gzipflags > "$tmp"; then 639a9ea25fSXin LI if test $kflag -eq 1 && smaller "$filez" "$tmp"; then 649a9ea25fSXin LI echo -n "$prog: $filez is smaller than $filegz" 659a9ea25fSXin LI echo "; keeping it" 669a9ea25fSXin LI rm -f "$tmp" 679a9ea25fSXin LI return 0 689a9ea25fSXin LI fi 699a9ea25fSXin LI if ! checkfile "$tmp"; then 709a9ea25fSXin LI echo "$prog: integrity check of $tmp failed" 719a9ea25fSXin LI rm -f "$tmp" 729a9ea25fSXin LI return 1; 739a9ea25fSXin LI fi 749a9ea25fSXin LI 759a9ea25fSXin LI # Try to keep the mode of the original file 769a9ea25fSXin LI if ! cp -fp "$filez" "$filegz"; then 779a9ea25fSXin LI echo "$prog: warning: could not keep mode of $filez" 789a9ea25fSXin LI fi 799a9ea25fSXin LI if ! cp "$tmp" "$filegz" 2> /dev/null; then 809a9ea25fSXin LI echo "$prog: warning: could not keep mode of $filez" 819a9ea25fSXin LI if ! cp -f "$tmp" "$filegz" 2> /dev/null; then 829a9ea25fSXin LI echo "$prog: could not copy $tmp to $filegz" 839a9ea25fSXin LI rm -f "$filegz" "$tmp" 849a9ea25fSXin LI return 1 859a9ea25fSXin LI fi 869a9ea25fSXin LI fi 879a9ea25fSXin LI if ! touch -fr "$filez" "$filegz"; then 889a9ea25fSXin LI echo -n "$prog: warning: could not keep timestamp of " 899a9ea25fSXin LI echo "$filez" 909a9ea25fSXin LI fi 919a9ea25fSXin LI rm -f "$filez" "$tmp" 929a9ea25fSXin LI else 939a9ea25fSXin LI echo "$prog: failed to process $filez" 949a9ea25fSXin LI rm -f "$tmp" 959a9ea25fSXin LI return 1 969a9ea25fSXin LI fi 979a9ea25fSXin LI} 989a9ea25fSXin LI 999a9ea25fSXin LIprog=`basename "$0"` 1009a9ea25fSXin LIusage="usage: $prog [-ftv9K] file ..." 1019a9ea25fSXin LI 1029a9ea25fSXin LIfflag=0 1039a9ea25fSXin LItflag=0 1049a9ea25fSXin LIkflag=0 1059a9ea25fSXin LIgzipflags= 1069a9ea25fSXin LI 1079a9ea25fSXin LI# -P flag is recognized to maintain compatibility, but ignored. Pipe mode is 1089a9ea25fSXin LI# always used 1099a9ea25fSXin LIwhile getopts :ftv9PK i; do 1109a9ea25fSXin LI case $i in 1119a9ea25fSXin LI f) fflag=1;; 1129a9ea25fSXin LI t) tflag=1;; 1139a9ea25fSXin LI v) gzipflags="-v $gzipflags";; 1149a9ea25fSXin LI 9) gzipflags="-9 $gzipflags";; 1159a9ea25fSXin LI P) ;; 1169a9ea25fSXin LI K) kflag=1;; 1179a9ea25fSXin LI \?) echo "$usage"; exit 1;; 1189a9ea25fSXin LI esac 1199a9ea25fSXin LIdone 1209a9ea25fSXin LI 121cf99a6beSYaroslav Tykhiyshift $((OPTIND - 1)) 1229a9ea25fSXin LI 1239a9ea25fSXin LIif test $# -eq 0; then 1249a9ea25fSXin LI echo "$usage" 1259a9ea25fSXin LI exit 1 1269a9ea25fSXin LIfi 1279a9ea25fSXin LI 1289a9ea25fSXin LIrc=0 1299a9ea25fSXin LI 1309a9ea25fSXin LIwhile test $# -ne 0; do 1319a9ea25fSXin LI if ! process "$1"; then 1329a9ea25fSXin LI rc=$? 1339a9ea25fSXin LI fi 1349a9ea25fSXin LI shift 1359a9ea25fSXin LIdone 1369a9ea25fSXin LIexit $rc 137