StdLib/LibC/Locale/ctypeio.c

   1 /** @file
   2     Internal C-type locale functions.
   3
   4     Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
   5
   6     This program and the accompanying materials
   7     are licensed and made available under the terms and conditions of the BSD License
   8     which accompanies this distribution. The full text of the license may be found at
   9     http://opensource.org/licenses/bsd-license.php.
  10     THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11     WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13     Copyright (c) 1997 Christos Zoulas.  All rights reserved.
  14
  15     Redistribution and use in source and binary forms, with or without
  16     modification, are permitted provided that the following conditions
  17     are met:
  18       1. Redistributions of source code must retain the above copyright
  19          notice, this list of conditions and the following disclaimer.
  20       2. Redistributions in binary form must reproduce the above copyright
  21          notice, this list of conditions and the following disclaimer in the
  22          documentation and/or other materials provided with the distribution.
  23       3. All advertising materials mentioning features or use of this software
  24          must display the following acknowledgement:
  25        This product includes software developed by Christos Zoulas.
  26       4. The name of the author may not be used to endorse or promote products
  27          derived from this software without specific prior written permission.
  28
  29     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  30     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  31     OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  32     IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  33     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  34     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  35     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  36     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  37     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  38     THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39
  40     NetBSD: ctypeio.c,v 1.7 2005/11/29 03:11:59 christos Exp
  41 **/
  42 #include  <LibConfig.h>
  43 #include  <sys/EfiCdefs.h>
  44 #if defined(LIBC_SCCS) && !defined(lint)
  45 __RCSID("$NetBSD: ctypeio.c,v 1.7 2005/11/29 03:11:59 christos Exp $");
  46 #endif /* LIBC_SCCS and not lint */
  47
  48 #include <sys/types.h>
  49
  50 #include <assert.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <string.h>
  54 #define _CTYPE_PRIVATE
  55 #include <ctype.h>
  56 #include "ctypeio.h"
  57
  58 int
  59 __loadctype(const char *name)
  60 {
  61   FILE *fp;
  62   char id[sizeof(_CTYPE_ID) - 1];
  63   u_int32_t i, len;
  64   unsigned short *new_ctype = NULL;
  65   unsigned char *new_toupper = NULL, *new_tolower = NULL;
  66
  67   _DIAGASSERT(name != NULL);
  68
  69   if ((fp = fopen(name, "r")) == NULL)
  70     return 0;
  71
  72   if (fread(id, sizeof(id), 1, fp) != 1)
  73     goto bad;
  74
  75   if (memcmp(id, _CTYPE_ID, sizeof(id)) != 0)
  76     goto bad;
  77
  78   if (fread(&i, sizeof(u_int32_t), 1, fp) != 1)
  79     goto bad;
  80
  81   if ((i = ntohl(i)) != _CTYPE_REV)
  82     goto bad;
  83
  84   if (fread(&len, sizeof(u_int32_t), 1, fp) != 1)
  85     goto bad;
  86
  87   if ((len = ntohl(len)) != _CTYPE_NUM_CHARS)
  88     goto bad;
  89
  90   if ((new_ctype = malloc(sizeof(UINT16) * (1 + len))) == NULL)
  91     goto bad;
  92
  93   new_ctype[0] = 0;
  94   if (fread(&new_ctype[1], sizeof(UINT16), len, fp) != len)
  95     goto bad;
  96
  97   if ((new_toupper = malloc(sizeof(UINT8) * (1 + len))) == NULL)
  98     goto bad;
  99
 100   new_toupper[0] = (UINT8)EOF;
 101   if (fread(&new_toupper[1], sizeof(UINT8), len, fp) != len)
 102     goto bad;
 103
 104   if ((new_tolower = malloc(sizeof(UINT8) * (1 + len))) == NULL)
 105     goto bad;
 106
 107   new_tolower[0] = (UINT8)EOF;
 108   if (fread(&new_tolower[1], sizeof(UINT8), len, fp) != len)
 109     goto bad;
 110
 111 #if BYTE_ORDER == LITTLE_ENDIAN
 112   for (i = 1; i <= len; i++) {
 113     new_ctype[i] = ntohs(new_ctype[i]);
 114   }
 115 #endif
 116
 117   (void) fclose(fp);
 118   if (_cClass != _C_CharClassTable)
 119     free(__UNCONST(_cClass));
 120   _cClass = new_ctype;
 121   if (_uConvT != _C_ToUpperTable)
 122     free(__UNCONST(_uConvT));
 123   _uConvT = new_toupper;
 124   if (_lConvT != _C_ToLowerTable)
 125     free(__UNCONST(_lConvT));
 126   _lConvT = new_tolower;
 127
 128   return 1;
 129 bad:
 130   free(new_tolower);
 131   free(new_toupper);
 132   free(new_ctype);
 133   (void) fclose(fp);
 134   return 0;
 135 }
 136
 137 int
 138 __savectype(
 139   const char     *name,
 140   unsigned short *new_ctype,
 141   unsigned char  *new_toupper,
 142   unsigned char  *new_tolower
 143   )
 144 {
 145   FILE *fp;
 146   u_int32_t i, len = _CTYPE_NUM_CHARS;
 147
 148   _DIAGASSERT(name != NULL);
 149   _DIAGASSERT(new_ctype != NULL);
 150   _DIAGASSERT(new_toupper != NULL);
 151   _DIAGASSERT(new_tolower != NULL);
 152
 153   if ((fp = fopen(name, "w")) == NULL)
 154     return 0;
 155
 156   if (fwrite(_CTYPE_ID, sizeof(_CTYPE_ID) - 1, 1, fp) != 1)
 157     goto bad;
 158
 159   i = htonl(_CTYPE_REV);
 160   if (fwrite(&i, sizeof(u_int32_t), 1, fp) != 1)
 161     goto bad;
 162
 163   i = htonl(len);
 164   if (fwrite(&i, sizeof(u_int32_t), 1, fp) != 1)
 165     goto bad;
 166
 167 #if BYTE_ORDER == LITTLE_ENDIAN
 168   for (i = 1; i <= len; i++) {
 169     new_ctype[i] = htons(new_ctype[i]);
 170   }
 171 #endif
 172   if (fwrite(&new_ctype[1], sizeof(UINT16), len, fp) != len)
 173     goto bad;
 174
 175   if (fwrite(&new_toupper[1], sizeof(UINT8), len, fp) != len)
 176     goto bad;
 177
 178   if (fwrite(&new_tolower[1], sizeof(UINT8), len, fp) != len)
 179     goto bad;
 180
 181   (void) fclose(fp);
 182   return 1;
 183 bad:
 184   (void) fclose(fp);
 185   return 0;
 186 }