-:
#!/bin/sh
# gzexe: compressor for Unix executables.
# Use this only for binaries that you do not use frequently.
# On Ultrix, /bin/sh is too buggy, change the first line to: #!/bin/sh5
-# Copyright (C) 1998, 2002, 2004 Free Software Foundation
+# Copyright (C) 1998, 2002, 2004, 2006, 2007 Free Software Foundation
# 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 2 of the License, or
+# 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,
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+tab=' '
+nl='
+'
+IFS=" $tab$nl"
+
version='gzexe (gzip) @VERSION@
-Copyright (C) 2006 Free Software Foundation, Inc.
+Copyright (C) 2007, 2011-2015 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.
Written by Jean-loup Gailly.'
-usage='Usage: gzexe [OPTION] FILE...
+usage="Usage: $0 [OPTION] FILE...
Rename each FILE with a compressed version of itself, renaming FILE to FILE~.
-d Decompress each FILE instead of compressing it.
--help display this help and exit
--version output version information and exit
-Report bugs to <bug-gzip@gnu.org>.'
+Report bugs to <bug-gzip@gnu.org>."
-PATH="BINDIR:$PATH"
-if test $# = 0; then
- echo "$usage"
- exit 1
-fi
+bindir=@bindir@
+case $1 in
+--__bindir) bindir=${2?}; shift; shift;;
+esac
+PATH=$bindir:$PATH
decomp=0
res=0
esac
done
-tmp=gz$$
-trap "rm -f $tmp; exit 1" 1 2 3 5 10 13 15
-
-set -C
-echo hi > $tmp || exit
-if test -z "`(${CPMOD-cpmod} $tmp $tmp) 2>&1`"; then
- cpmod=${CPMOD-cpmod}
-fi
-
-tail=""
-IFS="${IFS= }"; saveifs="$IFS"; IFS="${IFS}:"
-for dir in $PATH; do
- test -z "$dir" && dir=.
- if test -f $dir/tail; then
- tail="$dir/tail"
- break
- fi
-done
-IFS="$saveifs"
-if test -z "$tail"; then
- echo cannot find tail
+if test $# -eq 0; then
+ echo >&2 "$0: missing operand
+Try \`$0 --help' for more information."
exit 1
fi
-case `echo foo | $tail -n +1 2>/dev/null` in
-foo) tail="$tail -n";;
-esac
+
+tmp=
+trap 'res=$?
+ test -n "$tmp" && rm -f "$tmp"
+ (exit $res); exit $res
+' 0 1 2 3 5 10 13 15
+
+mktemp_status=
for i do
- if test ! -f "$i" ; then
- echo ${x}: $i not a file
- res=1
+ case $i in
+ -*) file=./$i;;
+ *) file=$i;;
+ esac
+ if test ! -f "$file" || test ! -r "$file"; then
+ res=$?
+ echo >&2 "$0: $i is not a readable regular file"
continue
fi
if test $decomp -eq 0; then
- if sed -e 1d -e 2q "$i" | grep "^skip=[0-9]*$" >/dev/null; then
- echo "${x}: $i is already gzexe'd"
+ if sed -e 1d -e 2q "$file" | grep "^skip=[0-9][0-9]*$" >/dev/null; then
+ echo >&2 "$0: $i is already gzexe'd"
continue
fi
fi
- if ls -l "$i" | grep '^...[sS]' > /dev/null; then
- echo "${x}: $i has setuid permission, unchanged"
+ if test -u "$file"; then
+ echo >&2 "$0: $i has setuid permission, unchanged"
continue
fi
- if ls -l "$i" | grep '^......[sS]' > /dev/null; then
- echo "${x}: $i has setgid permission, unchanged"
+ if test -g "$file"; then
+ echo >&2 "$0: $i has setgid permission, unchanged"
continue
fi
- case "$i" in
- */gzip | */tail | */sed | */chmod | */ln | */sleep | */rm)
- echo "${x}: $i would depend on itself"; continue ;;
+ case /$file in
+ */basename | */bash | */cat | */chmod | */cp | \
+ */dirname | */echo | */expr | */gzip | \
+ */ln | */mkdir | */mktemp | */mv | */rm | \
+ */sed | */sh | */sleep | */test | */tail)
+ echo >&2 "$0: $i might depend on itself"; continue;;
esac
- if test -z "$cpmod"; then
- cp -p "$i" $tmp 2>/dev/null || cp "$i" $tmp
- if test -w $tmp 2>/dev/null; then
- writable=1
- else
- writable=0
- chmod u+w $tmp 2>/dev/null
- fi
- : >| $tmp
+
+ dir=`dirname "$file"` || dir=$TMPDIR
+ test -d "$dir" && test -w "$dir" && test -x "$dir" || dir=/tmp
+ test -n "$tmp" && rm -f "$tmp"
+ if test -z "$mktemp_status"; then
+ type mktemp >/dev/null 2>&1
+ mktemp_status=$?
+ fi
+ if test $mktemp_status -eq 0; then
+ tmp=`TMPDIR=$dir mktemp -t gzexeXXXXXX`
+ else
+ tmp=$dir/gzexe$$
+ fi && { cp -p "$file" "$tmp" 2>/dev/null || cp "$file" "$tmp"; } || {
+ res=$?
+ echo >&2 "$0: cannot copy $file"
+ continue
+ }
+ if test -w "$tmp"; then
+ writable=1
+ else
+ writable=0
+ chmod u+w "$tmp" || {
+ res=$?
+ echo >&2 "$0: cannot chmod $tmp"
+ continue
+ }
fi
if test $decomp -eq 0; then
- (sed 1q $0 &&
- sed "s|^if tail|if $tail|" <<'EOF' &&
-skip=26
-set -C
+ (cat <<'EOF' &&
+#!/bin/sh
+skip=44
+
+tab=' '
+nl='
+'
+IFS=" $tab$nl"
+
umask=`umask`
umask 77
-if (tempfile --version) >/dev/null 2>&1
-then gztmp=`tempfile -p gztmp` || exit
-else gztmp=/tmp/gztmp$$
-fi
-if tail +$skip "$0" | "BINDIR"/gzip -cd > "$gztmp"; then
+
+gztmpdir=
+trap 'res=$?
+ test -n "$gztmpdir" && rm -fr "$gztmpdir"
+ (exit $res); exit $res
+' 0 1 2 3 5 10 13 15
+
+if type mktemp >/dev/null 2>&1; then
+ gztmpdir=`mktemp -dt`
+else
+ gztmpdir=/tmp/gztmp$$; mkdir $gztmpdir
+fi || { (exit 127); exit 127; }
+
+gztmp=$gztmpdir/$0
+case $0 in
+-* | */*'
+') mkdir -p "$gztmp" && rm -r "$gztmp";;
+*/*) gztmp=$gztmpdir/`basename "$0"`;;
+esac || { (exit 127); exit 127; }
+
+case `echo X | tail -n +1 2>/dev/null` in
+X) tail_n=-n;;
+*) tail_n=;;
+esac
+if tail $tail_n +$skip <"$0" | gzip -cd > "$gztmp"; then
umask $umask
- /bin/chmod 700 "$gztmp"
- prog=`echo "$gztmp" | /bin/sed 's|[^/]*$||'; echo $0 | /bin/sed 's|.*/||'`
- if /bin/ln "$gztmp" "$prog" 2>/dev/null; then
- trap '/bin/rm -f "$gztmp" "$prog"; exit $res' 0
- (/bin/sleep 5; /bin/rm -f "$gztmp" "$prog") 2>/dev/null &
- "$prog" ${1+"$@"}; res=$?
- else
- trap '/bin/rm -f "$gztmp"; exit $res' 0
- (/bin/sleep 5; /bin/rm -f "$gztmp") 2>/dev/null &
- "$gztmp" ${1+"$@"}; res=$?
- fi
+ chmod 700 "$gztmp"
+ (sleep 5; rm -fr "$gztmpdir") 2>/dev/null &
+ "$gztmp" ${1+"$@"}; res=$?
else
- echo Cannot decompress $0; exit 1
+ echo >&2 "Cannot decompress $0"
+ (exit 127); res=127
fi; exit $res
EOF
- gzip -cv9 "$i") > $tmp || {
- /bin/rm -f $tmp
- echo ${x}: compression not possible for $i, file unchanged.
- res=1
+ gzip -cv9 "$file") > "$tmp" || {
+ res=$?
+ echo >&2 "$0: compression not possible for $i, file unchanged."
continue
}
else
# decompression
- skip=26
- if sed -e 1d -e 2q "$i" | grep "^skip=[0-9][0-9]*$" >/dev/null; then
- eval `sed -e 1d -e 2q "$i"`
- fi
- if $tail +$skip "$i" | gzip -cd > $tmp; then
- :
- else
- echo ${x}: $i probably not in gzexe format, file unchanged.
- res=1
+ skip=44
+ skip_line=`sed -e 1d -e 2q "$file"`
+ case $skip_line in
+ skip=[0-9] | skip=[0-9][0-9] | skip=[0-9][0-9][0-9])
+ eval "$skip_line";;
+ esac
+ case `echo X | tail -n +1 2>/dev/null` in
+ X) tail_n=-n;;
+ *) tail_n=;;
+ esac
+ tail $tail_n +$skip "$file" | gzip -cd > "$tmp" || {
+ res=$?
+ echo >&2 "$0: $i probably not in gzexe format, file unchanged."
continue
- fi
+ }
fi
- rm -f "$i~"
- mv "$i" "$i~" || {
- echo ${x}: cannot backup $i as $i~
- rm -f $tmp
- res=1
+ test $writable -eq 1 || chmod u-w "$tmp" || {
+ res=$?
+ echo >&2 "$0: $tmp: cannot chmod"
continue
}
- mv $tmp "$i" || cp -p $tmp "$i" 2>/dev/null || cp $tmp "$i" || {
- echo ${x}: cannot create $i
- rm -f $tmp
- res=1
+ ln -f "$file" "$file~" || {
+ res=$?
+ echo >&2 "$0: cannot backup $i as $i~"
continue
}
- rm -f $tmp
- if test -n "$cpmod"; then
- $cpmod "$i~" "$i" 2>/dev/null
- elif test $writable -eq 0; then
- chmod u-w $i 2>/dev/null
- fi
+ mv -f "$tmp" "$file" || {
+ res=$?
+ echo >&2 "$0: cannot rename $tmp to $i"
+ continue
+ }
+ tmp=
done
-exit $res
+(exit $res); exit $res