X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=znew.in;h=2b703d17642b2c3393dfd9744774d71c1e500c23;hb=refs%2Fheads%2Fmaster;hp=fdbc78407e275382872683b530428e3dab611a71;hpb=ad96056bdcf62abd585cdb53768fbabdde75d1b5;p=debian%2Fgzip diff --git a/znew.in b/znew.in old mode 100755 new mode 100644 index fdbc784..2b703d1 --- a/znew.in +++ b/znew.in @@ -1,7 +1,47 @@ -: #!/bin/sh -PATH="BINDIR:$PATH"; export PATH +# Copyright (C) 1998, 2002, 2004, 2007, 2010-2018 Free Software Foundation, +# Inc. +# Copyright (C) 1993 Jean-loup Gailly + +# 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 3 of the License, 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, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +version="znew (gzip) @VERSION@ +Copyright (C) 2010-2018 Free Software Foundation, Inc. +This is free software. You may redistribute copies of it under the terms of +the GNU General Public License . +There is NO WARRANTY, to the extent permitted by law. + +Written by Jean-loup Gailly." + +usage="Usage: $0 [OPTION]... [FILE]... +Recompress files from .Z (compress) format to .gz (gzip) format. + +Options: + + -f Force recompression even if a .gz file already exists. + -t Test the new files before deleting originals. + -v Verbose; display name and statistics for each file compressed. + -9 Use the slowest compression method (optimal compression). + -P Use pipes for the conversion to reduce disk space usage. + -K Keep a .Z file when it is smaller than the .gz file; implies -t. + --help display this help and exit + --version output version information and exit + +Report bugs to ." + check=0 pipe=0 opt= @@ -13,89 +53,61 @@ new=0 block=1024 # block is the disk block size (best guess, need not be exact) -warn="(does not preserve modes and timestamp)" -tmp=/tmp/zfoo.$$ -set -C -echo hi > $tmp.1 -echo hi > $tmp.2 -if test -z "`(${CPMOD-cpmod} $tmp.1 $tmp.2) 2>&1`"; then - cpmod=${CPMOD-cpmod} - warn="" -fi - -if test -z "$cpmod" && ${TOUCH-touch} -r $tmp.1 $tmp.2 2>/dev/null; then - cpmod="${TOUCH-touch}" - cpmodarg="-r" - warn="(does not preserve file modes)" -fi - -# check if GZIP env. variable uses -S or --suffix -gzip -q $tmp.1 -ext=`echo $tmp.1* | sed "s|$tmp.1||"` -rm -f $tmp.[12]* -if test -z "$ext"; then - echo znew: error determining gzip extension - exit 1 -fi -if test "$ext" = ".Z"; then - echo znew: cannot use .Z as gzip extension. - exit 1 -fi +# Beware -s or --suffix in $GZIP. +unset GZIP +ext=.gz for arg do case "$arg" in + --help) printf '%s\n' "$usage" || exit 1; exit;; + --version) printf '%s\n' "$version" || exit 1; exit;; -*) opt="$opt $arg"; shift;; *) break;; esac done if test $# -eq 0; then - echo "recompress .Z files into $ext (gzip) files" - echo usage: `echo $0 | sed 's,^.*/,,'` "[-tv9KP]" file.Z... - echo " -t tests the new files before deleting originals" - echo " -v be verbose" - echo " -9 use the slowest compression method (optimal compression)" - echo " -K keep a .Z file when it is smaller than the $ext file" - echo " -P use pipes for the conversion $warn" + echo >&2 "$0: invalid number of operands; try \`$0 --help' for help" exit 1 fi -opt=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'` +opt=`printf '%s\n' "$opt" | sed -e 's/ //g' -e 's/-//g'` case "$opt" in - *t*) check=1; opt=`echo "$opt" | sed 's/t//g'` + *t*) check=1; opt=`printf '%s\n' "$opt" | sed 's/t//g'` esac case "$opt" in - *K*) keep=1; opt=`echo "$opt" | sed 's/K//g'` + *K*) keep=1; check=1; opt=`printf '%s\n' "$opt" | sed 's/K//g'` esac case "$opt" in - *P*) pipe=1; opt=`echo "$opt" | sed 's/P//g'` + *P*) pipe=1; opt=`printf '%s\n' "$opt" | sed 's/P//g'` esac if test -n "$opt"; then opt="-$opt" fi for i do - n=`echo $i | sed 's/.Z$//'` + n=`printf '%s\n' "$i" | sed 's/.Z$//'` if test ! -f "$n.Z" ; then - echo $n.Z not found + printf '%s\n' "$n.Z not found" res=1; continue fi test $keep -eq 1 && old=`wc -c < "$n.Z"` if test $pipe -eq 1; then if gzip -d < "$n.Z" | gzip $opt > "$n$ext"; then # Copy file attributes from old file to new one, if possible. - test -n "$cpmod" && $cpmod $cpmodarg "$n.Z" "$n$ext" 2> /dev/null + touch -r"$n.Z" -- "$n$ext" 2>/dev/null + chmod --reference="$n.Z" -- "$n$ext" 2>/dev/null else - echo error while recompressing $n.Z + printf '%s\n' "error while recompressing $n.Z" res=1; continue fi else if test $check -eq 1; then - if cp -p "$n.Z" "$n.$$" 2> /dev/null || cp "$n.Z" "$n.$$"; then - : + if cp -p "$n.Z" "$n.$$"; then + : else - echo cannot backup "$n.Z" + printf '%s\n' "cannot backup $n.Z" res=1; continue fi fi @@ -103,33 +115,31 @@ for i do : else test $check -eq 1 && mv "$n.$$" "$n.Z" - echo error while uncompressing $n.Z + printf '%s\n' "error while uncompressing $n.Z" res=1; continue fi if gzip $opt "$n"; then : else if test $check -eq 1; then - mv "$n.$$" "$n.Z" && rm -f "$n" - echo error while recompressing $n + mv "$n.$$" "$n.Z" && rm -f "$n" + printf '%s\n' "error while recompressing $n" else - # compress $n (might be dangerous if disk full) - echo error while recompressing $n, left uncompressed + # compress $n (might be dangerous if disk full) + printf '%s\n' "error while recompressing $n, left uncompressed" fi res=1; continue fi fi test $keep -eq 1 && new=`wc -c < "$n$ext"` if test $keep -eq 1 && test `expr \( $old + $block - 1 \) / $block` -lt \ - `expr \( $new + $block - 1 \) / $block`; then + `expr \( $new + $block - 1 \) / $block`; then if test $pipe -eq 1; then rm -f "$n$ext" - elif test $check -eq 1; then - mv "$n.$$" "$n.Z" && rm -f "$n$ext" else - gzip -d "$n$ext" && compress "$n" && rm -f "$n$ext" + mv "$n.$$" "$n.Z" && rm -f "$n$ext" fi - echo "$n.Z smaller than $n$ext -- unchanged" + printf '%s\n' "$n.Z smaller than $n$ext -- unchanged" elif test $check -eq 1; then if gzip -t "$n$ext" ; then @@ -137,7 +147,7 @@ for i do else test $pipe -eq 0 && mv "$n.$$" "$n.Z" rm -f "$n$ext" - echo error while testing $n$ext, $n.Z unchanged + printf '%s\n' "error while testing $n$ext, $n.Z unchanged" res=1; continue fi elif test $pipe -eq 1; then