1 /* $NetBSD: citrus_stdenc.c,v 1.1 2003/06/25 09:51:40 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 #include <sys/cdefs.h> 30 #if defined(LIBC_SCCS) && !defined(lint) 31 __RCSID("$NetBSD: citrus_stdenc.c,v 1.1 2003/06/25 09:51:40 tshiozak Exp $"); 32 #endif /* LIBC_SCCS and not lint */ 33 34 #include "namespace.h" 35 #include <assert.h> 36 #include <errno.h> 37 #include <stdlib.h> 38 #include <string.h> 39 40 #include "citrus_namespace.h" 41 #include "citrus_types.h" 42 #include "citrus_module.h" 43 #include "citrus_stdenc.h" 44 #include "citrus_none.h" 45 46 struct _citrus_stdenc _citrus_stdenc_default = { 47 &_citrus_NONE_stdenc_ops, /* ce_ops */ 48 NULL, /* ce_closure */ 49 NULL, /* ce_module */ 50 &_citrus_NONE_stdenc_traits, /* ce_traits */ 51 }; 52 53 #ifdef _I18N_DYNAMIC 54 55 int 56 _citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce, 57 char const * __restrict encname, 58 const void * __restrict variable, size_t lenvar) 59 { 60 int ret; 61 _citrus_module_t handle; 62 struct _citrus_stdenc *ce; 63 _citrus_stdenc_getops_t getops; 64 65 _DIAGASSERT(encname != NULL); 66 _DIAGASSERT(!lenvar || variable!=NULL); 67 _DIAGASSERT(rcc != NULL); 68 69 if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) { 70 *rce = &_citrus_stdenc_default; 71 return (0); 72 } 73 ce = malloc(sizeof(*ce)); 74 if (ce==NULL) { 75 ret = errno; 76 goto bad; 77 } 78 ce->ce_ops = NULL; 79 ce->ce_closure = NULL; 80 ce->ce_module = NULL; 81 ce->ce_traits = NULL; 82 83 ret = _citrus_load_module(&handle, encname); 84 if (ret) 85 goto bad; 86 87 ce->ce_module = handle; 88 89 getops = 90 (_citrus_stdenc_getops_t)_citrus_find_getops(ce->ce_module, 91 encname, "stdenc"); 92 if (getops == NULL) { 93 ret = EINVAL; 94 goto bad; 95 } 96 97 ce->ce_ops = (struct _citrus_stdenc_ops *)malloc(sizeof(*ce->ce_ops)); 98 if (ce->ce_ops == NULL) { 99 ret = errno; 100 goto bad; 101 } 102 103 ret = (*getops)(ce->ce_ops, sizeof(*ce->ce_ops), 104 _CITRUS_STDENC_ABI_VERSION); 105 if (ret) 106 goto bad; 107 108 /* If return ABI version is not expected, should fixup it */ 109 110 /* validation check */ 111 if (ce->ce_ops->eo_init == NULL || 112 ce->ce_ops->eo_uninit == NULL || 113 ce->ce_ops->eo_init_state == NULL || 114 ce->ce_ops->eo_mbtocs == NULL || 115 ce->ce_ops->eo_cstomb == NULL || 116 ce->ce_ops->eo_mbtowc == NULL || 117 ce->ce_ops->eo_wctomb == NULL) 118 goto bad; 119 120 /* allocate traits */ 121 ce->ce_traits = malloc(sizeof(*ce->ce_traits)); 122 if (ce->ce_traits == NULL) { 123 ret = errno; 124 goto bad; 125 } 126 /* init and get closure */ 127 ret = (*ce->ce_ops->eo_init)(ce, variable, lenvar, ce->ce_traits); 128 if (ret) 129 goto bad; 130 131 *rce = ce; 132 133 return (0); 134 135 bad: 136 _citrus_stdenc_close(ce); 137 return (ret); 138 } 139 140 void 141 _citrus_stdenc_close(struct _citrus_stdenc *ce) 142 { 143 144 _DIAGASSERT(ci != NULL); 145 146 if (ce == &_citrus_stdenc_default) 147 return; 148 149 if (ce->ce_module) { 150 if (ce->ce_ops) { 151 if (ce->ce_closure && ce->ce_ops->eo_uninit) 152 (*ce->ce_ops->eo_uninit)(ce); 153 free(ce->ce_ops); 154 } 155 free(ce->ce_traits); 156 _citrus_unload_module(ce->ce_module); 157 } 158 free(ce); 159 } 160 161 #else 162 /* !_I18N_DYNAMIC */ 163 164 int 165 /*ARGSUSED*/ 166 _citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce, 167 char const * __restrict encname, 168 const void * __restrict variable, size_t lenvar) 169 { 170 if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) { 171 *rce = &_citrus_stdenc_default; 172 return (0); 173 } 174 return (EINVAL); 175 } 176 177 void 178 /*ARGSUSED*/ 179 _citrus_stdenc_close(struct _citrus_stdenc *ce) 180 { 181 } 182 183 #endif 184