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#! /bin/sh
# $Id: headers-sh.in,v 1.11 2011/10/18 23:49:13 tom Exp $
##############################################################################
# Copyright (c) 2004-2007,2011 Thomas E. Dickey                              #
#                                                                            #
# Permission is hereby granted, free of charge, to any person obtaining a    #
# copy of this software and associated documentation files (the "Software"), #
# to deal in the Software without restriction, including without limitation  #
# the rights to use, copy, modify, merge, publish, distribute, distribute    #
# with modifications, sublicense, and/or sell copies of the Software, and to #
# permit persons to whom the Software is furnished to do so, subject to the  #
# following conditions:                                                      #
#                                                                            #
# The above copyright notice and this permission notice shall be included in #
# all copies or substantial portions of the Software.                        #
#                                                                            #
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR #
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   #
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    #
# THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      #
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING    #
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER        #
# DEALINGS IN THE SOFTWARE.                                                  #
#                                                                            #
# Except as contained in this notice, the name(s) of the above copyright     #
# holders shall not be used in advertising or otherwise to promote the sale, #
# use or other dealings in this Software without prior written               #
# authorization.                                                             #
##############################################################################
#
# Adjust includes for header files that reside in a subdirectory of
# /usr/include, etc.
#
# Parameters (the first case creates the sed script):
#	$1 is the target directory
#	$2 is the source directory
# or (the second case does the install, using the sed script):
#	$1 is the script to use for installing
#	$2 is the target directory
#	$3 is the source directory
#	$4 is the file to install, editing source/target/etc.

PACKAGE=@PACKAGE@
PKGNAME=@PACKAGE_PREFIX@
CONFIGH=@PACKAGE_CONFIG@
SUB_INC=@SUB_INC@

: ${TMPDIR:=/tmp}

TMPSED=headers.sed

DIGIT=0123456789
alpha=abcdefghijklmnopqrstuvwxyz
ALPHA=ABCDEFGHIJKLMNOPQRSTUVWXYZ

alnum=_${DIGIT}${alpha}
ALNUM=_${DIGIT}${ALPHA}
MIXED=_${DIGIT}${ALPHA}${alpha}

pkgname=`echo "$PKGNAME" | tr "$ALPHA" "$alpha"`

if test $# = 2 ; then
	rm -f $TMPSED
	DST=$1
	REF=$2
	LEAF=`basename $DST`

	# map the include-directory, if needed, to the subdirectory
	case $DST in
	/*/include/$LEAF)
		END=`basename $DST`
		for i in $REF/*.h
		do
			NAME=`basename $i`
			echo "s/<$NAME>/<$END\/$NAME>/g" >> $TMPSED
		done
		;;
	*)
		touch $TMPSED
		;;
	esac

	# cannot do _this_ in -e options:
	cat >headers.tmp <<EOF
s/^#[^ ][^ ]*//
s/[^'$MIXED']/ /g
s/[ 	][ 	]*/ /g
s/^ //
s/ $//
:split
	h
	s/ .*//
	p
	t next
	b done
:next
	x
	s/^[^ ][^ ]* //
	t split
:done
EOF
	# pick up autoconf-style symbols used in the application's headers
	for name in $REF/*.h
	do
		sed -e 's/^[ 	][ 	]*#[ 	][ 	]*/#/' $name \
		| egrep '^#(if|ifdef|ifndef|elif)' \
		| sed	-f headers.tmp \
		| sort -u \
		| egrep '^(HAVE_|NEED_|NO_|ENABLE_|DISABLE_)' \
		| sed	-e 's%^\(.*\)%s/\\<\1\\>/'${PKGNAME}'_\1/g%' >>$TMPSED
	done
	rm -f headers.tmp

	# pick up autoconf-defined symbols in the config.h file
	for name in `
	egrep '^#define[ 	][ 	]*['$ALNUM']' $REF/$CONFIGH \
		| sed \
			-e 's/^#define[ 	][ 	]*//' \
			-e 's/[ 	].*//' \
		| egrep -v "^${PACKAGE}_" \
		| sort -u`
	do
		echo "s/\\<$name\\>/${PKGNAME}_$name/g" >>$TMPSED
	done

	if test "$SUB_INC" = yes
	then
		echo "s,#include <${pkgname}_,#include <${PACKAGE}/${pkgname}_," >>$TMPSED
	fi

	echo '/_FILE_OFFSET_BITS/d' >>$TMPSED

	# reduce the count if possible, since some old sed's limit is 100 lines
	sort -u $TMPSED >headers.tmp
	mv headers.tmp $TMPSED
else
	PRG=""
	while test $# != 3
	do
		PRG="$PRG $1"; shift
	done

	DST=$1
	REF=$2
	SRC=$3

	SHOW=`basename $SRC`
	TMPSRC=$TMPDIR/${SHOW}-text$$
	TMPEDT=$TMPDIR/${SHOW}-edit$$
	TMPTMP=$TMPDIR/${SHOW}-temp$$

	echo "	... $SHOW"
	test -f $REF/$SRC && SRC="$REF/$SRC"

	rm -f $TMPSRC
	cat $SRC >$TMPSRC

	tmp1=1
	while true
	do
		tmp2=`expr $tmp1 + 49`
		if test $tmp1 = 1
		then
			sed "${tmp2}q" $TMPSED >$TMPEDT
		else
			sed "1,${tmp1}d; ${tmp2}q" $TMPSED >$TMPEDT
		fi
		test -s $TMPEDT || break
		sed -f $TMPEDT $TMPSRC > $TMPTMP
		mv $TMPTMP $TMPSRC
		tmp1=$tmp2
	done

	NAME=`basename $SRC`

	# Just in case someone gzip'd manpages, remove the conflicting copy.
	test -f $DST/$NAME.gz && rm -f $DST/$NAME.gz

	if test "$SUB_INC" = yes
	then
		case $NAME in #(vi
		${pkgname}_*) #(vi
			case "$PRG" in #(vi
			*install*)
				test -d $DST/$PACKAGE || mkdir -p $DST/$PACKAGE 
				;;
			esac
			NAME=$PACKAGE/$NAME
			;;
		*)
			NAME=$PACKAGE.h
			;;
		esac
	fi

	eval $PRG $TMPSRC $DST/$NAME
	rm -f $TMPEDT $TMPTMP $TMPSRC
fi
# vile:ts=4 sw=4
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