: Use /bin/sh
#
#
# Copyright 1992, 1993, 1999, 2001, Geoff Kuenning, Claremont, CA
# 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.
# 3. All modifications to the source code must be clearly marked as
#    such.  Binary redistributions based on modified source code
#    must be clearly marked as modified versions in the documentation
#    and/or other materials provided with the distribution.
# 4. The code that causes the 'ispell -v' command to display a prominent
#    link to the official ispell Web site may not be removed.
# 5. The name of Geoff Kuenning may not be used to endorse or promote
#    products derived from this software without specific prior
#    written permission.
#
# THIS SOFTWARE IS PROVIDED BY GEOFF KUENNING 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 GEOFF KUENNING 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.
#
#	Make an ispell patch kit.  This is not a clever script,
#	just a handy one.
#
#	Usage:
#
USAGE="Usage:  Makepatch [-n] [-d destdir] [-o file] ... [new-files]"
#
#	destdir is the directory in which the kits and patches are kept.
#
#	new-files are any new files to be added to the distribution.
#
#	The -n switch suppresses RCS updates, so that the patch can be
#	tested.
#
#	The -o switch can be used to limit patching to certain files.
#	This is useful to control the size of patches.  Version.h is
#	always patched.  This switch can appear more than once.
#
# $Log: Makepatch,v $
# Revision 1.21  2005/04/27 01:18:34  geoff
# Work around idiotic POSIX incompatibilies in tail.
#
# Revision 1.20  2005/04/14 14:38:23  geoff
# Update license.
#
# Revision 1.19  2001/07/25 21:51:47  geoff
# Minor license update.
#
# Revision 1.18  2001/07/23 20:24:02  geoff
# Update the copyright and the license.
#
# Revision 1.17  1999/01/07 01:58:06  geoff
# Update the copyright.
#
# Revision 1.16  1994/11/01  05:54:33  geoff
# When doing a partial run, update the fields code in the right RCS
# directory.
#
# Revision 1.15  1994/11/01  05:27:14  geoff
# Change the special code for handling the fields routines to reflect my
# latest source-tree reorganization.
#
# Revision 1.14  1994/05/18  02:56:48  geoff
# Correctly detect dictionary files for context selection
#
# Revision 1.13  1994/05/17  06:37:27  geoff
# Add the -o switch, to help handle overly-large patches.  Remember to
# return a success status at the end (rcsdiff can return a nonzero
# status).
#
# Revision 1.12  1994/02/08  06:03:56  geoff
# Don't expect a comma after version number (it makes patch barf)
#
# Revision 1.11  1994/01/25  07:11:15  geoff
# Get rid of all old RCS log lines in preparation for the 3.1 release.
#
#
destdir=kits
baserelease=3.1

trialrun=
files=
partialrun=false
nl='
'
while [ $# -gt 0 ]
do
    case "$1" in
	-d)
	    destdir="$2"
	    shift; shift
	    ;;
	-n)
	    trialrun=echo
	    shift
	    ;;
	-o)
	    files="$files $2"
	    partialrun=true
	    shift; shift
	    ;;
	-*)
	    echo "$USAGE" 1>&2
	    exit 1
	    ;;
	*)
	    break
	    ;;
    esac
done

allfiles=`Makekit -e`
if $partialrun
then
    :
else
    files="$allfiles"
fi

[ -d "$destdir" ]  ||  mkdir "$destdir"

#
# Because some cretin decided to break backwards compatibility in
# tail, we'll use sed to achieve the effect of "tail -1".
#
if [ -r "$destdir/Patch${baserelease}.01" ]
then
    lastpatch=`ls $destdir/Patch${baserelease}.?? | sed -n -e '$p' \
      | sed "s;$destdir/Patch${baserelease}.;;"`
else
    lastpatch=00
fi

patchno=`expr $lastpatch + 1`
case "$patchno" in
    [1-9])
	patchno=0$patchno
	;;
esac

patchfile="$destdir/Patch${baserelease}.$patchno"
case "$trialrun" in
    echo)
	patchfile="${patchfile}-test"
	;;
esac
lastpatchid=`echo Patch${baserelease}.$lastpatch | sed 's/\./_/g'`
patchid=`echo Patch${baserelease}.$patchno | sed 's/\./_/g'`

echo 'Index: version.h' > "$patchfile"
prereq=`co -r$lastpatchid -p RCS/version.h \
  | egrep 'International Ispell Version' \
  | sed -e 's/^.*International Ispell Version //' -e 's/ .*$//'`
echo "Prereq: $prereq" >> "$patchfile"
echo "" >> "$patchfile"
patchlevel=`egrep "International Ispell Version $baserelease" version.h \
  | sed -e "s/^.*Version $baserelease\.//" -e 's/ .*$//'`
case "$patchlevel" in
    $patchno)
	;;
    $lastpatch)
	$trialrun co -l version.h
	# Note this requires System V date command!
	date=`date +%D`
	co -p -q version.h \
	  | sed "/International/s;$baserelease.$lastpatch ../../..;$baserelease.$patchno $date;" \
	  | case "$trialrun" in
		'')
		    cat > version.h
		    ;;
		echo)
		    echo 'Edit version.h to produce:'
		    egrep 'International Ispell Version'
		    ;;
	    esac
	;;
    *)
	echo "Sorry, I can't figure out what level you're patching!" 1>&2
	exit 1
	;;
esac
lastrev=`rlog -h version.h | sed -n 's/head:[	 ]*//p'`
if $partialrun
then
    $trialrun rcs -N$patchid:$lastpatchid \
      `echo $allfiles | tr ' ' "$nl" \
        | sed '/^fields.[ch3]$/s;^;'"$HOME/src/local/fields/;"`
fi
case "$trialrun" in
    '')
	rcs -N$patchid:$lastrev version.h
	rcsdiff -r$lastpatchid -r$patchid version.h >> "$patchfile"
	;;
    echo)
	echo rcs -N$patchid:$lastrev version.h
	rcsdiff -r$lastpatchid version.h >> "$patchfile"
	;;
esac

for basefile in $files
do
    case "$basefile" in
	fields.[ch3])
	    rcsfile=$HOME/src/local/fields/RCS/$basefile,v
	    ;;
	*)
	    rcsfile=`rlog -R $basefile`
	    ;;
    esac
    lastrev=`rlog -h $rcsfile | sed -n 's/head:[	 ]*//p'`
    case "$basefile" in
	version.h)
	    ;;
	*)
	    $trialrun rcs -N$patchid:$lastrev $rcsfile
	    case "$trialrun" in
		'')
		    changes=`rcsdiff -r$lastpatchid -r$patchid $rcsfile \
			$basefile 2>/dev/null \
		      | sed 1q`
		    ;;
		echo)
		    changes=`rcsdiff -r$lastpatchid $rcsfile $basefile \
			2>/dev/null \
		      | sed 1d`
		    ;;
	    esac
	    case "$changes" in
		'')
		    ;;
		*)
		    case "$basefile" in
			languages/english/*.[0-9])
			    context=
			    ;;
			*)
			    context=-u
			    ;;
		    esac
		    echo "" >> "$patchfile"
		    echo "Index: $basefile" >> "$patchfile"
		    echo "" >> "$patchfile"
		    case "$trialrun" in
			'')
			    rcsdiff $context -r$lastpatchid -r$patchid \
				$rcsfile $basefile \
			      >> "$patchfile"
			    ;;
			echo)
			    rcsdiff $context -r$lastpatchid $rcsfile \
				$basefile \
			      >> "$patchfile"
			    ;;
		    esac
		    ;;
	    esac
    esac
done

#
# Do new files
#
for basefile
do
    echo "" >> "$patchfile"
    echo "Index: $basefile" >> "$patchfile"
    echo "" >> "$patchfile"
    diff -c /dev/null $basefile | sed "s;/dev/null;$basefile;" >> "$patchfile"
done
exit 0