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pkgsrc-ng/pkgtools/pkgdiff/files/pkgdiff
2016-01-21 23:40:00 +01:00

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#!@SH@
#
# $NetBSD: pkgdiff,v 1.23 2015/02/03 22:50:27 abs Exp $
#
# Usage: pkgdiff newfile
# pkgdiff oldfile newfile
#
# Will output a patch ready for the NetBSD Pkgs Collection (unified
# diff, plus no RCS IDs if possible). If only newfile is given,
# oldfile is assumed as newfile.orig.
#
#
# Copyright (c) 2011 by Thomas Klausner <wiz@NetBSD.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
#
# Copyright (c) 2004-2011 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Hubert Feyrer <hubertf@NetBSD.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Ensure we always use the same timezone to avoid spurious metadata diffs
export TZ=UTC
if [ $# -le 1 ]
then
if [ -f "$1.orig" ]; then
old="$1.orig"
new="$1"
else
echo $0: need at least one argument >&2
exit 1;
fi
else
old="$1"
new="$2"
fi
basename_new="`basename "$new"`"
dodiff() {
case x"$basename_new" in
xconfigure)
@DIFF@ -I '\(echo .*as_me:[0-9][0-9]*:\|echo .*configure:[0-9][0-9]*:\|line [0-9][0-9]* "configure\)' -I '\(Avoid regenerating within pkgsrc\|exit 0\)' "$@"
;;
xMakefile*)
@DIFF@ -I '\(localedir.*=.*localedir\|localedir.*=.*share/locale\)' "$@"
;;
*)
@DIFF@ "$@"
esac
}
dogrep() {
egrep $* '\$(NetBSD|Author|Date|Header|Id|Locker|Log|Name|RCSfile|Revision|Source|State)(:.*)?\$'
}
case x"$PKGDIFF_FMT" in x)
lines=3
PKGDIFF_FMT="-p"
while [ `dodiff $PKGDIFF_FMT -U $lines "$old" "$new" | dogrep -c` != 0 ]
do
lines=`expr $lines - 1`
if [ $lines = 0x -a x"$PKGDIFF_FMT" = x-p ]; then
# Try without -p instead
lines=3
PKGDIFF_FMT=""
continue
fi
if [ $lines = 0 ]; then
echo "Cannot strip away RCS IDs, please handle manually!" >&2
echo "These are the matching lines:" >&2
dodiff $PKGDIFF_FMT -U $lines "$old" "$new" | dogrep |\
sed -e 's/^/ /' >&2
echo "Setting PKGDIFF_FMT might help." >&2
echo "Otherwise you may need to run diff by hand." >&2
exit 1
fi
done
PKGDIFF_FMT="${PKGDIFF_FMT} -U $lines"
;;
esac # PKGDIFF_FMT unset or null
if dodiff -q $PKGDIFF_FMT "$old" "$new" > /dev/null
then
:
else
echo '$'NetBSD'$'
echo ''
# Strip out the date on the +++ line to reduce needless
# differences in regenerated patches
dodiff $PKGDIFF_FMT "$old" "$new" | sed -e 's:^\(+++ [^ ]*\) .*:\1:'
fi