usr.bin/menuc/util.c

   1 /*      $NetBSD: util.c,v 1.5 2012/03/06 16:55:18 mbalmer Exp $ */
   2
   3 /*
   4  * Copyright 1997 Piermont Information Systems Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Philip A. Nelson for Piermont Information Systems Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. The name of Piermont Information Systems Inc. may not be used to endorse
  18  *    or promote products derived from this software without specific prior
  19  *    written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  31  * THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 /* util.c - utility routines. */
  36
  37 #if HAVE_NBTOOL_CONFIG_H
  38 #include "nbtool_config.h"
  39 #endif
  40
  41 #include <sys/cdefs.h>
  42
  43 #if defined(__RCSID) && !defined(lint)
  44 __RCSID("$NetBSD: util.c,v 1.5 2012/03/06 16:55:18 mbalmer Exp $");
  45 #endif
  46
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50 #include <stdarg.h>
  51 #include "defs.h"
  52
  53 /* Error routine */
  54 void
  55 yyerror(const char *fmt, ...)
  56 {
  57         va_list args;
  58
  59         va_start(args, fmt);
  60         printf("%s:%d: ", src_name, line_no);
  61         vfprintf(stdout, fmt, args);
  62         printf("\n");
  63         va_end(args);
  64         had_errors = TRUE;
  65 }
  66
  67 /* Buffer routines */
  68 static char *mc_buff = NULL;
  69 static int mc_size = 0;
  70 static int mc_loc = 0;
  71
  72 void
  73 buff_add_ch(char ch)
  74 {
  75         char *t;
  76
  77         if (mc_loc >= mc_size-1) {
  78                 if (mc_size == 0)
  79                         mc_size = 80;
  80                 else
  81                         mc_size *= 2;
  82                 t = (char *)malloc(mc_size);
  83                 if (t == NULL) {
  84                         (void)fprintf(stderr, "%s:%d: Malloc error\n",
  85                                          src_name, line_no);
  86                         exit(1);
  87                 }
  88                 if (mc_buff != NULL) {
  89                         strcpy(t, mc_buff);
  90                         free(mc_buff);
  91                 }
  92                 mc_buff = t;
  93         }
  94         mc_buff[mc_loc++] = ch;
  95         mc_buff[mc_loc] = '\0';
  96 }
  97
  98 /* get a copy of the string ! */
  99 char *
 100 buff_copy(void)
 101 {
 102         char *res = strdup(mc_buff);
 103
 104         mc_loc = 0;
 105         mc_buff[0] = '\0';
 106         return res;
 107 }