Current Path : /usr/bin/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //usr/bin/gzexe |
#!/bin/sh - # # $NetBSD: gzexe,v 1.3 2004/05/01 08:22:41 wiz Exp $ # $OpenBSD: gzexe,v 1.3 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: release/9.1.0/usr.bin/gzip/gzexe 166255 2007-01-26 10:19:08Z delphij $ # The number of lines plus one in the on-the-fly decompression script lines=19 # A simple string to recognize already compressed files magic="# compressed by gzexe" # Write the decompression script to stdout header () { # first section needs variable expansion, second not cat <<- EOF #!/bin/sh - $magic lines=$lines EOF cat <<- 'EOF' prog=`/usr/bin/basename "$0"` tmp=`/usr/bin/mktemp -d /tmp/gzexeXXXXXXXXXX` || { /bin/echo "$prog: cannot create tmp dir"; exit 1 } trap '/bin/rm -rf "$tmp"' 0 if /usr/bin/tail +$lines "$0" | /usr/bin/gzip -dc > "$tmp/$prog" 2> /dev/null; then /bin/chmod u+x "$tmp/$prog" "$tmp/$prog" ${1+"$@"} ret=$? else /bin/echo "$prog: cannot decompress $0" ret=1 fi exit $ret EOF } # Test if a file is compressed by checking the magic line compressed () { test "X`sed -n 2p "$1" 2> /dev/null`" = "X$magic" } # Decompress a file decompress () { tmp=`mktemp /tmp/gzexeXXXXXXXXXX` || { echo "$prog: cannot create tmp file" return 1 } if ! cp "$1" "$tmp"; then echo "$prog: cannot copy $1 to $tmp" rm -f "$tmp" return 1 fi if ! tail +$lines "$tmp" | gzip -vdc > "$1"; then echo "$prog: cannot decompress $1" cp "$tmp" "$1" rm -f "$tmp" return 1 fi } # Perform some sanity checks on the file check () { if test ! -e "$1"; then echo "$prog: cannot compress non-existing file $1" return 1 fi if test ! -f "$1"; then echo "$prog: cannot compress non-regular file $1" return 1 fi case `basename "$1"` in sh | mktemp | rm | echo | tail | gzip | chmod) echo "$prog: cannot compress $1, I depend on it" return 1 esac if test ! -x "$1"; then echo "$prog: cannot compress $1, it is not executable" return 1 fi if test -u "$1" -o -g "$1"; then echo "$prog: cannot compress $1, it has an s bit set" return 1 fi } # Compress a file compress () { tmp=`mktemp /tmp/gzexeXXXXXXXXXX` || { echo "$prog: cannot create tmp file" return 1 } if ! cp "$1" "$tmp"; then echo "$prog: cannot copy $1 to $tmp" rm -f "$tmp" return 1 fi if ! cp "$1" "$1"~; then echo "$prog: cannot create backup copy $1~" rm -f "$1"~ "$tmp" return 1 fi # Use cp to overwrite the existing file preserving mode and owner # if possible. If the file is not writable, this will produce an # error. if header "$1" > "$tmp" && gzip -vc "$1" >> "$tmp"; then if ! cp "$tmp" "$1"; then echo "$prog: cannot copy $tmp to $1" rm -f "$tmp" return 1 fi else echo "$prog: cannot compress $1" rm -f "$1"~ "$tmp" return 1 fi } # Is the -d flag specified? dflag= # Return value rc=0 if test "X$1" = X-d; then dflag=1 shift fi prog=`basename "$0"` USAGE="usage: $prog [-d] file ..." if test $# -eq 0; then echo $USAGE exit 1 fi while test $# -ne 0; do if test $dflag; then if ! compressed "$1"; then echo "$prog: $1 is not compressed" rc=1; elif ! decompress "$1"; then rc=$? fi else if compressed "$1"; then echo "$prog: $1 is already compressed" rc=1; elif ! check "$1" || ! compress "$1"; then rc=$? fi fi shift done exit $rc