#!/bin/sh -
# DBSQL - A SQL database engine.
#
# Copyright (C) 2007-2008  The DBSQL Group, Inc. - All rights reserved.
#
# This library is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# There are special exceptions to the terms and conditions of the GPL as it
# is applied to this software. View the full text of the exception in file
# LICENSE_EXCEPTIONS in the directory of this software distribution.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# $Id: s_include 7 2007-02-03 13:34:17Z gburd $
#
# Build the automatically generated function prototype files.

msgc="/* DO NOT EDIT: automatically built by dist/s_include. */"

head()
{
	defonly=0
	while :
		do case "$1" in
		space)
			echo ""; shift;;
		defonly)
			defonly=1; shift;;
		*)
			name="$1"; break;;
		esac
	done

	echo "$msgc"
	echo "#ifndef	$name"
	echo "#define	$name"
	echo ""
	if [ $defonly -eq 0 ]; then
		echo "#if defined(__cplusplus)"
		echo "extern \"C\" {"
		echo "#endif"
		echo ""
	fi
}

tail()
{
	defonly=0
	while :
		do case "$1" in
		defonly)
			defonly=1; shift;;
		*)
			name="$1"; break;;
		esac
	done

	echo ""
	if [ $defonly -eq 0 ]; then
		echo "#if defined(__cplusplus)"
		echo "}"
		echo "#endif"
	fi
	echo "#endif /* !$name */"
}

# We are building several files:
#	1 external #define file
#	1 external prototype file
#	1 internal #define file
#	N internal prototype files
e_dfile=/tmp/__db_c.$$
e_pfile=/tmp/__db_a.$$
i_dfile=/tmp/__db_d.$$
i_pfile=/tmp/__db_b.$$
trap 'rm -f $e_dfile $e_pfile $i_dfile $i_pfile; exit 0' 0 1 2 3 13 15

head defonly space _DBSQL_EXT_DEF_IN_ > $e_dfile
head space _DBSQL_EXT_PROT_IN_ > $e_pfile
head defonly _DBSQL_INT_DEF_IN_ > $i_dfile

# Process the standard directories, creating per-directory prototype
# files and adding to the external prototype and #define files.
for i in dbsql os clib common ; do
	head "_${i}_ext_h_" > $i_pfile

	f="../src/$i/*.c"
	[ "$f" = "../src/dbsql/*.c" ] && f="../src/*.c"
	awk -f gen_inc.awk \
	    -v e_dfile=$e_dfile \
	    -v e_pfile=$e_pfile \
	    -v i_dfile=$i_dfile \
	    -v i_pfile=$i_pfile $f

	tail "_${i}_ext_h_" >> $i_pfile

	f="../src/inc/${i}_ext.h"
	cmp $i_pfile $f > /dev/null 2>&1 ||
	    (echo "Building $f" && rm -f $f && cp $i_pfile $f && chmod 444 $f)
done