lib/libc/citrus/citrus_stdenc_template.h

   1 /*      $NetBSD: citrus_stdenc_template.h,v 1.3 2005/10/29 18:02:04 tshiozak Exp $      */
   2
   3 /*-
   4  * Copyright (c)2003 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 /*
  30  * CAUTION: THIS IS NOT STANDALONE FILE
  31  *
  32  * function templates of iconv standard encoding handler for each encodings.
  33  *
  34  */
  35
  36 /*
  37  * macros
  38  */
  39
  40 #undef _TO_EI
  41 #undef _CE_TO_EI
  42 #undef _TO_STATE
  43 #define _TO_EI(_cl_)    ((_ENCODING_INFO*)(_cl_))
  44 #define _CE_TO_EI(_ce_) (_TO_EI((_ce_)->ce_closure))
  45 #define _TO_STATE(_ps_) ((_ENCODING_STATE*)(_ps_))
  46
  47 /* ----------------------------------------------------------------------
  48  * templates for public functions
  49  */
  50
  51 int
  52 _FUNCNAME(stdenc_getops)(struct _citrus_stdenc_ops *ops, size_t lenops,
  53                          uint32_t expected_version)
  54 {
  55         if (expected_version<_CITRUS_STDENC_ABI_VERSION || lenops<sizeof(*ops))
  56                 return (EINVAL);
  57
  58         memcpy(ops, &_FUNCNAME(stdenc_ops), sizeof(_FUNCNAME(stdenc_ops)));
  59
  60         return (0);
  61 }
  62
  63 static int
  64 _FUNCNAME(stdenc_init)(struct _citrus_stdenc * __restrict ce,
  65                        const void * __restrict var, size_t lenvar,
  66                        struct _citrus_stdenc_traits * __restrict et)
  67 {
  68         int ret;
  69         _ENCODING_INFO *ei;
  70
  71         ei = NULL;
  72         if (sizeof(_ENCODING_INFO) > 0) {
  73                 ei = calloc(1, sizeof(_ENCODING_INFO));
  74                 if (ei == NULL) {
  75                         return errno;
  76                 }
  77         }
  78
  79         ret = _FUNCNAME(encoding_module_init)(ei, var, lenvar);
  80         if (ret) {
  81                 free((void *)ei);
  82                 return ret;
  83         }
  84
  85         ce->ce_closure = ei;
  86         et->et_state_size = sizeof(_ENCODING_STATE);
  87         et->et_mb_cur_max = _ENCODING_MB_CUR_MAX(_CE_TO_EI(ce));
  88
  89         return 0;
  90 }
  91
  92 static void
  93 _FUNCNAME(stdenc_uninit)(struct _citrus_stdenc * __restrict ce)
  94 {
  95         if (ce) {
  96                 _FUNCNAME(encoding_module_uninit)(_CE_TO_EI(ce));
  97                 free(ce->ce_closure);
  98         }
  99 }
 100
 101 static int
 102 _FUNCNAME(stdenc_init_state)(struct _citrus_stdenc * __restrict ce,
 103                              void * __restrict ps)
 104 {
 105         _FUNCNAME(init_state)(_CE_TO_EI(ce), _TO_STATE(ps));
 106
 107         return 0;
 108 }
 109
 110 static int
 111 _FUNCNAME(stdenc_mbtocs)(struct _citrus_stdenc * __restrict ce,
 112                          _citrus_csid_t * __restrict csid,
 113                          _citrus_index_t * __restrict idx,
 114                          const char ** __restrict s, size_t n,
 115                          void * __restrict ps, size_t * __restrict nresult)
 116 {
 117         int ret;
 118         wchar_t wc;
 119
 120         _DIAGASSERT(nresult != NULL);
 121
 122         ret = _FUNCNAME(mbrtowc_priv)(_CE_TO_EI(ce), &wc, s, n,
 123                                       _TO_STATE(ps), nresult);
 124
 125         if (!ret && *nresult != (size_t)-2)
 126                 _FUNCNAME(stdenc_wctocs)(_CE_TO_EI(ce), csid, idx, wc);
 127
 128         return ret;
 129 }
 130
 131 static int
 132 _FUNCNAME(stdenc_cstomb)(struct _citrus_stdenc * __restrict ce,
 133                          char * __restrict s, size_t n,
 134                          _citrus_csid_t csid, _citrus_index_t idx,
 135                          void * __restrict ps, size_t * __restrict nresult)
 136 {
 137         int ret;
 138         wchar_t wc;
 139
 140         _DIAGASSERT(nresult != NULL);
 141
 142         wc = 0;
 143
 144         if (csid != _CITRUS_CSID_INVALID) {
 145                 ret = _FUNCNAME(stdenc_cstowc)(_CE_TO_EI(ce), &wc, csid, idx);
 146                 if (ret)
 147                         return ret;
 148         }
 149
 150         return _FUNCNAME(wcrtomb_priv)(_CE_TO_EI(ce), s, n, wc, _TO_STATE(ps),
 151                                        nresult);
 152 }
 153
 154 static int
 155 _FUNCNAME(stdenc_mbtowc)(struct _citrus_stdenc * __restrict ce,
 156                          _citrus_wc_t * __restrict wc,
 157                          const char ** __restrict s, size_t n,
 158                          void * __restrict ps, size_t * __restrict nresult)
 159 {
 160         return _FUNCNAME(mbrtowc_priv)(_CE_TO_EI(ce), wc, s, n,
 161                                        _TO_STATE(ps), nresult);
 162 }
 163
 164 static int
 165 _FUNCNAME(stdenc_wctomb)(struct _citrus_stdenc * __restrict ce,
 166                           char * __restrict s, size_t n, _citrus_wc_t wc,
 167                           void * __restrict ps, size_t * __restrict nresult)
 168 {
 169         return _FUNCNAME(wcrtomb_priv)(_CE_TO_EI(ce), s, n, wc, _TO_STATE(ps),
 170                                        nresult);
 171 }
 172
 173 static int
 174 _FUNCNAME(stdenc_put_state_reset)(struct _citrus_stdenc * __restrict ce,
 175                                   char * __restrict s, size_t n,
 176                                   void * __restrict ps,
 177                                   size_t * __restrict nresult)
 178 {
 179 #if _ENCODING_IS_STATE_DEPENDENT
 180         return _FUNCNAME(put_state_reset)(_CE_TO_EI(ce), s, n, _TO_STATE(ps),
 181                                           nresult);
 182 #else
 183         *nresult = 0;
 184         return 0;
 185 #endif
 186 }
 187
 188 static int
 189 _FUNCNAME(stdenc_get_state_desc)(struct _citrus_stdenc * __restrict ce,
 190                                  void * __restrict ps,
 191                                  int id,
 192                                  struct _citrus_stdenc_state_desc * __restrict d)
 193 {
 194         int ret;
 195
 196         switch (id) {
 197         case _STDENC_SDID_GENERIC:
 198                 ret = _FUNCNAME(stdenc_get_state_desc_generic)(
 199                         _CE_TO_EI(ce), _TO_STATE(ps), &d->u.generic.state);
 200                 break;
 201         default:
 202                 ret = EOPNOTSUPP;
 203         }
 204
 205         return ret;
 206 }