znew revision 1.1
1 #!/bin/ksh - 2 # 3 # $OpenBSD: znew,v 1.2 2003/08/05 18:22:17 deraadt Exp $ 4 # 5 # Copyright (c) 2003 Otto Moerbeek <otto (at] drijf.net> 6 # 7 # Permission to use, copy, modify, and distribute this software for any 8 # purpose with or without fee is hereby granted, provided that the above 9 # copyright notice and this permission notice appear in all copies. 10 # 11 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 # 19 20 # Return 0 if the first arg file size is smaller than the second, 1 otherwise. 21 smaller () { 22 a=`du -k "$1" | awk '{ print $1 }'` 23 b=`du -k "$2" | awk '{ print $1 }'` 24 test $a -lt $b 25 } 26 27 # Check gzip integrity if the -t flag is specified 28 checkfile () { 29 if test $tflag -eq 1; then 30 gzip -qt < "$1" 31 fi 32 } 33 34 # Decompress a file and then gzip it 35 process () { 36 prefix="${1%.Z}" 37 filez="$prefix".Z 38 filegz="$prefix".gz 39 40 if test ! -e "$filez"; then 41 echo "$prog: $filez does not exist" 42 return 1 43 fi 44 if test ! -f "$filez"; then 45 echo "$prog: $filez is not a regular file" 46 return 1 47 fi 48 if test -e "$filegz" -a $fflag -eq 0; then 49 echo "$prog: $filegz already exists" 50 return 1 51 fi 52 53 tmp=`mktemp /tmp/znewXXXXXXXXXX` || { 54 echo "$prog: cannot create tmp file" 55 return 1 56 } 57 trap 'rm -f "$tmp"; exit 1' HUP INT QUIT PIPE TERM 58 59 # Do the actual work, producing a file "$tmp" 60 if uncompress -f -c < "$filez" | gzip -f $gzipflags -o "$tmp"; then 61 62 if test $kflag -eq 1 && smaller "$filez" "$tmp"; then 63 echo -n "$prog: $filez is smaller than $filegz" 64 echo "; keeping it" 65 rm -f "$tmp" 66 return 0 67 fi 68 if ! checkfile "$tmp"; then 69 echo "$prog: integrity check of $tmp failed" 70 rm -f "$tmp" 71 return 1; 72 fi 73 74 # Try to keep the mode of the original file 75 if ! cp -fp "$filez" "$filegz"; then 76 echo "$prog: warning: could not keep mode of $filez" 77 fi 78 if ! cp "$tmp" "$filegz" 2> /dev/null; then 79 echo "$prog: warning: could not keep mode of $filez" 80 if ! cp -f "$tmp" "$filegz" 2> /dev/null; then 81 echo "$prog: could not copy $tmp to $filegz" 82 rm -f "$filegz" "$tmp" 83 return 1 84 fi 85 fi 86 if ! touch -fr "$filez" "$filegz"; then 87 echo -n "$prog: warning: could not keep timestamp of " 88 echo "$filez" 89 fi 90 rm -f "$filez" "$tmp" 91 else 92 echo "$prog: failed to process $filez" 93 rm -f "$tmp" 94 return 1 95 fi 96 } 97 98 prog=`basename "$0"` 99 usage="usage: $prog [-ftv9K] file ..." 100 101 fflag=0 102 tflag=0 103 kflag=0 104 gzipflags= 105 106 # -P flag is recognized to maintain compatibility, but ignored. Pipe mode is 107 # always used 108 while getopts :ftv9PK i; do 109 case $i in 110 f) fflag=1;; 111 t) tflag=1;; 112 v) gzipflags="-v $gzipflags";; 113 9) gzipflags="-9 $gzipflags";; 114 P) ;; 115 K) kflag=1;; 116 \?) echo "$usage"; exit 1;; 117 esac 118 done 119 120 shift OPTIND-1 121 122 if test $# -eq 0; then 123 echo "$usage" 124 exit 1 125 fi 126 127 rc=0 128 129 while test $# -ne 0; do 130 if ! process "$1"; then 131 rc=$? 132 fi 133 shift 134 done 135 exit $rc 136
Indexes created Thu Nov 06 21:09:53 GMT 2025