usr.bin/menuc/util.c

   1 /*      $NetBSD: util.c,v 1.3 2003/07/17 08:33:44 lukem 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. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software develooped for the NetBSD Project by
  20  *      Piermont Information Systems Inc.
  21  * 4. The name of Piermont Information Systems Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
  26  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
  29  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  35  * THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  */
  38
  39 /* util.c - utility routines. */
  40
  41 #if HAVE_NBTOOL_CONFIG_H
  42 #include "nbtool_config.h"
  43 #endif
  44
  45 #include <sys/cdefs.h>
  46
  47 #if defined(__RCSID) && !defined(lint)
  48 __RCSID("$NetBSD: util.c,v 1.3 2003/07/17 08:33:44 lukem Exp $");
  49 #endif
  50
  51
  52 #include <stdio.h>
  53 #include <stdlib.h>
  54 #include <string.h>
  55 #include <stdarg.h>
  56 #include "defs.h"
  57
  58 /* Error routine */
  59 void
  60 yyerror(const char *fmt, ...)
  61 {
  62         va_list args;
  63
  64         va_start (args, fmt);
  65         printf ("%s:%d: ", src_name, line_no);
  66         vfprintf (stdout, fmt, args);
  67         printf ("\n");
  68         va_end (args);
  69         had_errors = TRUE;
  70 }
  71
  72
  73 /* Buffer routines */
  74 static char *mc_buff = NULL;
  75 static int mc_size = 0;
  76 static int mc_loc = 0;
  77
  78 void buff_add_ch (char ch)
  79 {
  80         char *t;
  81
  82         if (mc_loc >= mc_size-1) {
  83                 if (mc_size == 0)
  84                         mc_size = 80;
  85                 else
  86                         mc_size *= 2;
  87                 t = (char *) malloc (mc_size);
  88                 if (t == NULL) {
  89                         (void) fprintf (stderr, "%s:%d: Malloc error\n",
  90                                          src_name, line_no);
  91                         exit (1);
  92                 }
  93                 if (mc_buff != NULL) {
  94                         strcpy (t, mc_buff);
  95                         free (mc_buff);
  96                 }
  97                 mc_buff = t;
  98         }
  99         mc_buff[mc_loc++] = ch;
 100         mc_buff[mc_loc] = '\0';
 101 }
 102
 103 /* get a copy of the string ! */
 104
 105 char *
 106 buff_copy (void)
 107 {
 108         char *res = strdup (mc_buff);
 109         mc_loc = 0;
 110         mc_buff[0] = '\0';
 111         return  res;
 112 }