usr.sbin/chrtbl/ctypeio.c

   1 /* $NetBSD: ctypeio.c,v 1.1 2009/01/02 00:20:23 tnozaki Exp $ */
   2
   3 /*
   4  * Copyright (c) 1997 Christos Zoulas.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 #if defined(LIBC_SCCS) && !defined(lint)
  29 __RCSID("$NetBSD: ctypeio.c,v 1.1 2009/01/02 00:20:23 tnozaki Exp $");
  30 #endif /* LIBC_SCCS and not lint */
  31
  32 #include <sys/types.h>
  33 #include <assert.h>
  34 #define _CTYPE_PRIVATE
  35 #include <ctype.h>
  36 #include <errno.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <unistd.h>
  41
  42 #include "ctypeio.h"
  43
  44 int
  45 __savectype(const char *name, unsigned char *new_ctype,
  46     short *new_toupper, short *new_tolower)
  47 {
  48         FILE *fp;
  49         uint32_t i, len = _CTYPE_NUM_CHARS;
  50
  51         _DIAGASSERT(name != NULL);
  52         _DIAGASSERT(new_ctype != NULL);
  53         _DIAGASSERT(new_toupper != NULL);
  54         _DIAGASSERT(new_tolower != NULL);
  55
  56         if ((fp = fopen(name, "w")) == NULL)
  57                 return 0;
  58
  59         if (fwrite(_CTYPE_ID, sizeof(_CTYPE_ID) - 1, 1, fp) != 1)
  60                 goto bad;
  61
  62         i = htonl(_CTYPE_REV);
  63         if (fwrite(&i, sizeof(uint32_t), 1, fp) != 1)
  64                 goto bad;
  65
  66         i = htonl(len);
  67         if (fwrite(&i, sizeof(uint32_t), 1, fp) != 1)
  68                 goto bad;
  69
  70         if (fwrite(&new_ctype[1], sizeof(uint8_t), len, fp) != len)
  71                 goto bad;
  72
  73 #if BYTE_ORDER == LITTLE_ENDIAN
  74         for (i = 1; i <= len; i++) {
  75                 new_toupper[i] = htons(new_toupper[i]);
  76                 new_tolower[i] = htons(new_tolower[i]);
  77         }
  78 #endif
  79         if (fwrite(&new_toupper[1], sizeof(int16_t), len, fp) != len)
  80                 goto bad;
  81
  82         if (fwrite(&new_tolower[1], sizeof(int16_t), len, fp) != len)
  83                 goto bad;
  84
  85
  86         (void)fclose(fp);
  87         return 1;
  88 bad:
  89         (void)fclose(fp);
  90         return 0;
  91 }