/*      $NetBSD: util.c,v 1.6 2019/06/23 22:46:53 christos Exp $        */

/*
* Copyright 1997 Piermont Information Systems Inc.
* All rights reserved.
*
* Written by Philip A. Nelson for Piermont Information Systems Inc.
*
* 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. The name of Piermont Information Systems Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``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 PIERMONT INFORMATION SYSTEMS INC. 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.
*
*/

/* util.c - utility routines. */

#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif

#include <sys/cdefs.h>

#if defined(__RCSID) && !defined(lint)
__RCSID("$NetBSD: util.c,v 1.6 2019/06/23 22:46:53 christos Exp $");
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "defs.h"

/* Error routine */
void
yyerror(const char *fmt, ...)
{
       va_list args;

       va_start(args, fmt);
       printf("%s:%d: ", src_name, line_no);
       vfprintf(stdout, fmt, args);
       printf("\n");
       va_end(args);
       had_errors = TRUE;
}

/* Buffer routines */
static char *mc_buff = NULL;
static int mc_size = 0;
static int mc_loc = 0;

void
buff_add_ch(char ch)
{
       char *t;

       if (mc_loc >= mc_size-1) {
               if (mc_size == 0)
                       mc_size = 80;
               else
                       mc_size *= 2;
               t = malloc(mc_size);
               if (t == NULL) {
                       (void)fprintf(stderr, "%s:%d: Malloc error\n",
                                        src_name, line_no);
                       exit(1);
               }
               if (mc_buff != NULL) {
                       strcpy(t, mc_buff);
                       free(mc_buff);
               }
               mc_buff = t;
       }
       mc_buff[mc_loc++] = ch;
       mc_buff[mc_loc] = '\0';
}

/* get a copy of the string ! */
char *
buff_copy(void)
{
       char *res = strdup(mc_buff);

       mc_loc = 0;
       mc_buff[0] = '\0';
       return res;
}