Replace the GNU gzip with a slightly modified NetBSD gzip. The

NetBSD version is a feature-to-feature re-implementation of GNU
gzip using the freely-redistributable zlib and this version is
expected to be mostly bug-to-bug compatible with the GNU
implementation.

 - Because this is a piece of mature code and we want to make
   changes so it is added directly rather than importing to
   src/contrib.
 - Connect newly added code to src/usr.bin/ and rescue/rescue
   build.
 - Disconnect the GNU gzip code from build for now, they will
   be eventually removed completely.
 - Provide two new src.conf(5) knobs, WITHOUT_BZIP2_SUPPORT and
   WITHOUT_BZIP2.

Tested by:	kris (full exp-7 pointyhat build)
Approved by:	core (importing a 4-clause BSD licensed file)
Approved by:	re (adding new utility during -HEAD code slush)

1 files changed, 55 insertions, 0 deletions

diff --git a/usr.bin/gzip/zforce b/usr.bin/gzip/zforce
new file mode 100644
index 0000000..3b7324c
--- /dev/null
+++ b/usr.bin/gzip/zforce
@@ -0,0 +1,55 @@
+#!/bin/sh -
+#
+# $NetBSD: zforce,v 1.2 2003/12/28 12:43:43 wiz Exp $
+# $OpenBSD: zforce,v 1.2 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.
+#
+# $FreeBSD$
+prog=`basename $0`
+USAGE="usage: $prog file ..."
+if test $# -eq 0; then
+	echo $USAGE
+	exit 1
+fi
+
+ret=0
+
+while test $# -ne 0; do
+	case "$1" in
+		*[._-]gz)
+			shift
+			;;
+		*.t[ag]z)
+			shift
+			;;
+		*)
+			if file "$1" |
+				grep -q "gzip compressed data" 2> /dev/null
+			then
+				n="$1".gz
+				if mv "$1" "$n" 2> /dev/null; then
+					echo "$1" -- renamed to "$n"
+				else
+					ret=1
+					echo $prog: cannot rename "$1" to "$n"
+				fi
+			fi
+			shift
+			;;
+	esac
+done
+exit $ret