lib/libc/citrus/citrus_ctype.c

   1 /*      $NetBSD: citrus_ctype.c,v 1.4 2003/03/05 20:18:15 tshiozak Exp $        */
   2
   3 /*-
   4  * Copyright (c)1999, 2000, 2001, 2002 Citrus Project,
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 #if defined(LIBC_SCCS) && !defined(lint)
  31 __RCSID("$NetBSD: citrus_ctype.c,v 1.4 2003/03/05 20:18:15 tshiozak Exp $");
  32 #endif /* LIBC_SCCS and not lint */
  33
  34 #include <sys/types.h>
  35 #include <assert.h>
  36 #include <errno.h>
  37 #include <limits.h>
  38 #include <string.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <unistd.h>
  42 #include <stddef.h>
  43 #include <wchar.h>
  44 #include "citrus_module.h"
  45 #include "citrus_ctype.h"
  46 #include "citrus_ctype_fallback.h"
  47 #include "citrus_none.h"
  48 #include _CITRUS_DEFAULT_CTYPE_HEADER
  49
  50 _citrus_ctype_rec_t _citrus_ctype_default = {
  51         &_CITRUS_DEFAULT_CTYPE_OPS,     /* cc_ops */
  52         NULL,                           /* cc_closure */
  53         NULL                            /* cc_module */
  54 };
  55
  56 #ifdef _I18N_DYNAMIC
  57
  58 static int _initctypemodule(_citrus_ctype_t, char const *, _citrus_module_t,
  59                             void *, size_t, size_t);
  60
  61 static int
  62 _initctypemodule(_citrus_ctype_t cc, char const *modname,
  63                  _citrus_module_t handle, void *variable, size_t lenvar,
  64                  size_t szpriv)
  65 {
  66         int ret;
  67         _citrus_ctype_getops_t getops;
  68
  69         _DIAGASSERT(cc != NULL);
  70
  71         cc->cc_module = handle;
  72
  73         getops = (_citrus_ctype_getops_t)_citrus_find_getops(cc->cc_module,
  74                                                              modname,
  75                                                              "ctype");
  76         if (getops == NULL)
  77                 return (EINVAL);
  78
  79         cc->cc_ops = (_citrus_ctype_ops_rec_t *)malloc(sizeof(*cc->cc_ops));
  80         if (cc->cc_ops == NULL)
  81                 return (ENOMEM);
  82
  83         ret = (*getops)(cc->cc_ops, sizeof(*cc->cc_ops),
  84                         _CITRUS_CTYPE_ABI_VERSION);
  85         if (ret)
  86                 goto bad;
  87
  88         /* If return ABI version is not expected, fixup it here*/
  89         switch (cc->cc_ops->co_abi_version) {
  90         case 0x00000001:
  91                 cc->cc_ops->co_btowc = &_citrus_ctype_btowc_fallback;
  92                 cc->cc_ops->co_wctob = &_citrus_ctype_wctob_fallback;
  93                 /* FALLTHROUGH */
  94         case 0x00000002:
  95                 /* FALLTHROUGH */
  96         default:
  97                 break;
  98         }
  99
 100         /* validation check */
 101         if (cc->cc_ops->co_init == NULL ||
 102             cc->cc_ops->co_uninit == NULL ||
 103             cc->cc_ops->co_get_mb_cur_max == NULL ||
 104             cc->cc_ops->co_mblen == NULL ||
 105             cc->cc_ops->co_mbrlen == NULL ||
 106             cc->cc_ops->co_mbrtowc == NULL ||
 107             cc->cc_ops->co_mbsinit == NULL ||
 108             cc->cc_ops->co_mbsrtowcs == NULL ||
 109             cc->cc_ops->co_mbstowcs == NULL ||
 110             cc->cc_ops->co_mbtowc == NULL ||
 111             cc->cc_ops->co_wcrtomb == NULL ||
 112             cc->cc_ops->co_wcsrtombs == NULL ||
 113             cc->cc_ops->co_wcstombs == NULL ||
 114             cc->cc_ops->co_wctomb == NULL ||
 115             cc->cc_ops->co_btowc == NULL ||
 116             cc->cc_ops->co_wctob == NULL)
 117                 goto bad;
 118
 119         /* init and get closure */
 120         ret = (*cc->cc_ops->co_init)(
 121                 &cc->cc_closure, variable, lenvar, szpriv);
 122         if (ret)
 123                 goto bad;
 124
 125         return (0);
 126
 127 bad:
 128         if (cc->cc_ops)
 129                 free(cc->cc_ops);
 130         cc->cc_ops = NULL;
 131
 132         return (ret);
 133 }
 134
 135 int
 136 _citrus_ctype_open(_citrus_ctype_t *rcc,
 137                    char const *encname, void *variable, size_t lenvar,
 138                    size_t szpriv)
 139 {
 140         int ret;
 141         _citrus_module_t handle;
 142         _citrus_ctype_t cc;
 143
 144         _DIAGASSERT(encname != NULL);
 145         _DIAGASSERT(!lenvar || variable!=NULL);
 146         _DIAGASSERT(rcc != NULL);
 147
 148         if (!strcmp(encname, _CITRUS_DEFAULT_CTYPE_NAME)) {
 149                 *rcc = &_citrus_ctype_default;
 150                 return (0);
 151         }
 152         ret = _citrus_load_module(&handle, encname);
 153         if (ret)
 154                 return (ret);
 155
 156         cc = calloc(1, sizeof(*cc));
 157         if (!cc) {
 158                 _citrus_unload_module(handle);
 159                 return (errno);
 160         }
 161
 162         ret = _initctypemodule(cc, encname, handle, variable, lenvar, szpriv);
 163         if (ret) {
 164                 _citrus_unload_module(cc->cc_module);
 165                 free(cc);
 166                 return (ret);
 167         }
 168
 169         *rcc = cc;
 170
 171         return (0);
 172 }
 173
 174 void
 175 _citrus_ctype_close(_citrus_ctype_t cc)
 176 {
 177
 178         _DIAGASSERT(cc != NULL);
 179
 180         if (cc == &_citrus_ctype_default)
 181                 return;
 182         (*cc->cc_ops->co_uninit)(cc->cc_closure);
 183         free(cc->cc_ops);
 184         _citrus_unload_module(cc->cc_module);
 185         free(cc);
 186 }
 187
 188 #else
 189 /* !_I18N_DYNAMIC */
 190
 191 int
 192 /*ARGSUSED*/
 193 _citrus_ctype_open(_citrus_ctype_t *rcc,
 194                    char const *encname, void *variable, size_t lenvar,
 195                    size_t szpriv)
 196 {
 197         if (!strcmp(encname, _CITRUS_DEFAULT_CTYPE_NAME)) {
 198                 *rcc = &_citrus_ctype_default;
 199                 return (0);
 200         }
 201         return (EINVAL);
 202 }
 203
 204 void
 205 /*ARGSUSED*/
 206 _citrus_ctype_close(_citrus_ctype_t cc)
 207 {
 208 }
 209
 210 #endif