/*
 * Copyright (c) 2002, The Tendra Project <http://www.ten15.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 unmodified, 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.
 *
 *
 *    		 Crown Copyright (c) 1997
 *
 *    This TenDRA(r) Computer Program is subject to Copyright
 *    owned by the United Kingdom Secretary of State for Defence
 *    acting through the Defence Evaluation and Research Agency
 *    (DERA).  It is made available to Recipients with a
 *    royalty-free licence for its use, reproduction, transfer
 *    to other parties and amendment for any purpose not excluding
 *    product development provided that any such use et cetera
 *    shall be deemed to be acceptance of the following conditions:-
 *
 *        (1) Its Recipients shall ensure that this Notice is
 *        reproduced upon any copies or amended versions of it;
 *
 *        (2) Any amended version of it shall be clearly marked to
 *        show both the nature of and the organisation responsible
 *        for the relevant amendment or amendments;
 *
 *        (3) Its onward transfer from a recipient to another
 *        party shall be deemed to be that party's acceptance of
 *        these conditions;
 *
 *        (4) DERA gives no warranty or assurance as to its
 *        quality or suitability for any purpose and DERA accepts
 *        no liability whatsoever in relation to any use to which
 *        it may be put.
 *
 * $TenDRA: tendra/src/tools/pl/includes.c,v 1.8 2005/09/18 20:28:57 stefanf Exp $
 */


#include "config.h"
#include "cstring.h"
#include "fmm.h"
#include "includes.h"
#include "errors.h"
#include "msgcat.h"


char * file_name;
static Path * inc_paths;


void
init_includes(void)
{
    inc_paths = xalloc(sizeof(*inc_paths));
    inc_paths->name = "";
    inc_paths->next = (Path*)0;
}

void
add_include(char * p)
{
    Path * x = xalloc(sizeof(*x));
    Path ** n = &inc_paths->next;
    x->name = string_concat(p,"/");
    x->next = (Path*)0;
    while (*n != (Path*)0) n = &((*n)->next);
    *n = x;
}


FILE *
open_include(char * a)
{
    char * fn;
    Path * p = inc_paths;
    FILE * ans;
    int i;
    while (*a != '"') a++;
    a++;
    for (i=0; ; i++) {
		if (a[i]=='"' || a[i]==0) {
			a[i] = 0;
			break;
		}
    }
    while (p != (Path*)0) {
		fn = string_concat(p->name, a);
		ans = fopen(fn,"r");
		if (ans != (FILE*)0) {
			file_name = fn;
			return ans;
		}
		p = p->next;
    }
    MSG_cant_open_include(a);
    return (FILE*)0;
}