1 /* 2 * Copyright (c) 1999 3 * Silicon Graphics Computer Systems, Inc. 4 * 5 * Copyright (c) 1999 6 * Boris Fomitchev 7 * 8 * This material is provided "as is", with absolutely no warranty expressed 9 * or implied. Any use is at your own risk. 10 * 11 * Permission to use or copy this software for any purpose is hereby granted 12 * without fee, provided the above notices are retained on all copies. 13 * Permission to modify the code and to distribute modified code is granted, 14 * provided the above notices are retained, and a notice that the code was 15 * modified is included with the above copyright notice. 16 * 17 */ 18 // WARNING: This is an internal header file, included by other C++ 19 // standard library headers. You should not attempt to use this header 20 // file directly. 21 22 23 #ifndef _STLP_INTERNAL_CODECVT_H 24 #define _STLP_INTERNAL_CODECVT_H 25 26 #ifndef _STLP_C_LOCALE_H 27 # include <stl/c_locale.h> 28 #endif 29 30 #ifndef _STLP_INTERNAL_LOCALE_H 31 # include <stl/_locale.h> 32 #endif 33 34 #ifndef _STLP_INTERNAL_ALGOBASE_H 35 # include <stl/_algobase.h> 36 #endif 37 38 _STLP_BEGIN_NAMESPACE 39 40 class _STLP_CLASS_DECLSPEC codecvt_base { 41 public: 42 enum result {ok, partial, error, noconv}; 43 }; 44 45 template <class _InternT, class _ExternT, class _StateT> 46 class codecvt : public locale::facet, public codecvt_base { 47 public: 48 typedef _InternT intern_type; 49 typedef _ExternT extern_type; 50 typedef _StateT state_type; 51 52 #if defined (_STLP_MSVC) && (_STLP_MSVC < 1300) 53 /* For the moment VC6 do not support this facet default implementation 54 * because of the static locale::id instance. When VC6 see this definition 55 * it goes crasy with locale::id static instances and all the has_facet tests 56 * unit tests are failing. 57 */ 58 }; 59 #else 60 explicit codecvt(size_t __refs = 0) : locale::facet(__refs) {} 61 62 result out(state_type& __state, 63 const intern_type* __from, 64 const intern_type* __from_end, 65 const intern_type*& __from_next, 66 extern_type* __to, 67 extern_type* __to_limit, 68 extern_type*& __to_next) const { 69 _STLP_VERBOSE_ASSERT(__from <= __from_end, _StlMsg_INVALID_ARGUMENT) 70 _STLP_VERBOSE_ASSERT(__to <= __to_limit, _StlMsg_INVALID_ARGUMENT) 71 return do_out(__state, 72 __from, __from_end, __from_next, 73 __to, __to_limit, __to_next); 74 } 75 76 result unshift(state_type& __state, 77 extern_type* __to, 78 extern_type* __to_limit, 79 extern_type*& __to_next) const { 80 _STLP_VERBOSE_ASSERT(__to <= __to_limit, _StlMsg_INVALID_ARGUMENT) 81 return do_unshift(__state, __to, __to_limit, __to_next); 82 } 83 84 result in(state_type& __state, 85 const extern_type* __from, 86 const extern_type* __from_end, 87 const extern_type*& __from_next, 88 intern_type* __to, 89 intern_type* __to_limit, 90 intern_type*& __to_next) const { 91 _STLP_VERBOSE_ASSERT(__from <= __from_end, _StlMsg_INVALID_ARGUMENT) 92 _STLP_VERBOSE_ASSERT(__to <= __to_limit, _StlMsg_INVALID_ARGUMENT) 93 return do_in(__state, 94 __from, __from_end, __from_next, 95 __to, __to_limit, __to_next); 96 } 97 98 int encoding() const _STLP_NOTHROW { return do_encoding(); } 99 100 bool always_noconv() const _STLP_NOTHROW { return do_always_noconv(); } 101 102 int length(state_type& __state, 103 const extern_type* __from, 104 const extern_type* __from_end, 105 size_t __max) const { 106 _STLP_VERBOSE_ASSERT(__from <= __from_end, _StlMsg_INVALID_ARGUMENT) 107 return do_length(__state, __from, __from_end, __max); 108 } 109 110 int max_length() const _STLP_NOTHROW { return do_max_length(); } 111 112 static locale::id id; 113 114 protected: 115 ~codecvt() {} 116 117 virtual result do_out(state_type&, 118 const intern_type* __from, 119 const intern_type*, 120 const intern_type*& __from_next, 121 extern_type* __to, 122 extern_type*, 123 extern_type*& __to_next) const 124 { __from_next = __from; __to_next = __to; return noconv; } 125 126 virtual result do_in (state_type&, 127 const extern_type* __from, 128 const extern_type*, 129 const extern_type*& __from_next, 130 intern_type* __to, 131 intern_type*, 132 intern_type*& __to_next) const 133 { __from_next = __from; __to_next = __to; return noconv; } 134 135 virtual result do_unshift(state_type&, 136 extern_type* __to, 137 extern_type*, 138 extern_type*& __to_next) const 139 { __to_next = __to; return noconv; } 140 141 virtual int do_encoding() const _STLP_NOTHROW 142 { return 1; } 143 144 virtual bool do_always_noconv() const _STLP_NOTHROW 145 { return true; } 146 147 virtual int do_length(state_type&, 148 const extern_type* __from, 149 const extern_type* __end, 150 size_t __max) const 151 { return (int)(min) ( __STATIC_CAST(size_t, (__end - __from)), __max); } 152 153 virtual int do_max_length() const _STLP_NOTHROW 154 { return 1; } 155 156 private: 157 codecvt(const codecvt<intern_type, extern_type, state_type>&); 158 codecvt<intern_type, extern_type, state_type>& operator = (const codecvt<intern_type, extern_type, state_type>&); 159 }; 160 161 # if defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION) && !defined (_STLP_LINK_TIME_INSTANTIATION) 162 # if !defined (__BORLANDC__) || (__BORLANDC__ >= 0x590) 163 template <class _InternT, class _ExternT, class _StateT> 164 locale::id codecvt<_InternT, _ExternT, _StateT>::id; 165 # endif 166 # endif 167 #endif 168 169 template <class _InternT, class _ExternT, class _StateT> 170 class codecvt_byname : public codecvt<_InternT, _ExternT, _StateT> {}; 171 172 _STLP_TEMPLATE_NULL 173 class _STLP_CLASS_DECLSPEC codecvt<char, char, mbstate_t> 174 : public locale::facet, public codecvt_base { 175 public: 176 typedef char intern_type; 177 typedef char extern_type; 178 typedef mbstate_t state_type; 179 180 explicit codecvt(size_t __refs = 0) : locale::facet(__refs) {} 181 182 result out(state_type& __state, 183 const char* __from, 184 const char* __from_end, 185 const char*& __from_next, 186 char* __to, 187 char* __to_limit, 188 char*& __to_next) const { 189 _STLP_VERBOSE_ASSERT(__from <= __from_end, _StlMsg_INVALID_ARGUMENT) 190 _STLP_VERBOSE_ASSERT(__to <= __to_limit, _StlMsg_INVALID_ARGUMENT) 191 return do_out(__state, 192 __from, __from_end, __from_next, 193 __to, __to_limit, __to_next); 194 } 195 196 result unshift(state_type& __state, 197 char* __to, char* __to_limit, char*& __to_next) const { 198 _STLP_VERBOSE_ASSERT(__to <= __to_limit, _StlMsg_INVALID_ARGUMENT) 199 return do_unshift(__state, __to, __to_limit, __to_next); 200 } 201 202 result in(state_type& __state, 203 const char* __from, 204 const char* __from_end, 205 const char*& __from_next, 206 char* __to, 207 char* __to_limit, 208 char*& __to_next) const { 209 _STLP_VERBOSE_ASSERT(__from <= __from_end, _StlMsg_INVALID_ARGUMENT) 210 _STLP_VERBOSE_ASSERT(__to <= __to_limit, _StlMsg_INVALID_ARGUMENT) 211 return do_in(__state, 212 __from, __from_end, __from_next, 213 __to, __to_limit, __to_next); 214 } 215 216 int encoding() const _STLP_NOTHROW { return do_encoding(); } 217 218 bool always_noconv() const _STLP_NOTHROW { return do_always_noconv(); } 219 220 int length(state_type& __state, 221 const char* __from, const char* __from_end, 222 size_t __max) const { 223 _STLP_VERBOSE_ASSERT(__from <= __from_end, _StlMsg_INVALID_ARGUMENT) 224 return do_length(__state, __from, __from_end, __max); 225 } 226 227 int max_length() const _STLP_NOTHROW { return do_max_length(); } 228 229 static _STLP_STATIC_DECLSPEC locale::id id; 230 231 protected: 232 ~codecvt(); 233 234 virtual result do_out(state_type& /* __state */, 235 const char* __from, 236 const char* /* __from_end */, 237 const char*& __from_next, 238 char* __to, 239 char* /* __to_limit */, 240 char*& __to_next) const; 241 242 virtual result do_in (state_type& /* __state */ , 243 const char* __from, 244 const char* /* __from_end */, 245 const char*& __from_next, 246 char* __to, 247 char* /* __to_end */, 248 char*& __to_next) const; 249 250 virtual result do_unshift(state_type& /* __state */, 251 char* __to, 252 char* /* __to_limit */, 253 char*& __to_next) const; 254 255 virtual int do_encoding() const _STLP_NOTHROW; 256 virtual bool do_always_noconv() const _STLP_NOTHROW; 257 virtual int do_length(state_type& __state, 258 const char* __from, 259 const char* __end, 260 size_t __max) const; 261 virtual int do_max_length() const _STLP_NOTHROW; 262 private: 263 codecvt(const codecvt<char, char, mbstate_t>&); 264 codecvt<char, char, mbstate_t>& operator =(const codecvt<char, char, mbstate_t>&); 265 }; 266 267 # ifndef _STLP_NO_WCHAR_T 268 269 _STLP_TEMPLATE_NULL 270 class _STLP_CLASS_DECLSPEC codecvt<wchar_t, char, mbstate_t> 271 : public locale::facet, public codecvt_base { 272 public: 273 typedef wchar_t intern_type; 274 typedef char extern_type; 275 typedef mbstate_t state_type; 276 277 explicit codecvt(size_t __refs = 0) : locale::facet(__refs) {} 278 279 result out(state_type& __state, 280 const wchar_t* __from, 281 const wchar_t* __from_end, 282 const wchar_t*& __from_next, 283 char* __to, 284 char* __to_limit, 285 char*& __to_next) const { 286 _STLP_VERBOSE_ASSERT(__from <= __from_end, _StlMsg_INVALID_ARGUMENT) 287 _STLP_VERBOSE_ASSERT(__to <= __to_limit, _StlMsg_INVALID_ARGUMENT) 288 return do_out(__state, 289 __from, __from_end, __from_next, 290 __to, __to_limit, __to_next); 291 } 292 293 result unshift(state_type& __state, 294 char* __to, char* __to_limit, char*& __to_next) const { 295 _STLP_VERBOSE_ASSERT(__to <= __to_limit, _StlMsg_INVALID_ARGUMENT) 296 return do_unshift(__state, __to, __to_limit, __to_next); 297 } 298 299 result in(state_type& __state, 300 const char* __from, 301 const char* __from_end, 302 const char*& __from_next, 303 wchar_t* __to, 304 wchar_t* __to_limit, 305 wchar_t*& __to_next) const { 306 _STLP_VERBOSE_ASSERT(__from <= __from_end, _StlMsg_INVALID_ARGUMENT) 307 _STLP_VERBOSE_ASSERT(__to <= __to_limit, _StlMsg_INVALID_ARGUMENT) 308 return do_in(__state, 309 __from, __from_end, __from_next, 310 __to, __to_limit, __to_next); 311 } 312 313 int encoding() const _STLP_NOTHROW { return do_encoding(); } 314 315 bool always_noconv() const _STLP_NOTHROW { return do_always_noconv(); } 316 317 int length(state_type& __state, 318 const char* __from, const char* __from_end, 319 size_t __max) const { 320 _STLP_VERBOSE_ASSERT(__from <= __from_end, _StlMsg_INVALID_ARGUMENT) 321 return do_length(__state, __from, __from_end, __max); 322 } 323 324 int max_length() const _STLP_NOTHROW { return do_max_length(); } 325 326 static _STLP_STATIC_DECLSPEC locale::id id; 327 328 protected: 329 ~codecvt(); 330 331 virtual result do_out(state_type& __state, 332 const wchar_t* __from, 333 const wchar_t* __from_end, 334 const wchar_t*& __from_next, 335 char* __to, 336 char* __to_limit, 337 char*& __to_next) const; 338 339 virtual result do_in (state_type& __state, 340 const char* __from, 341 const char* __from_end, 342 const char*& __from_next, 343 wchar_t* __to, 344 wchar_t* __to_limit, 345 wchar_t*& __to_next) const; 346 347 virtual result do_unshift(state_type& __state, 348 char* __to, 349 char* __to_limit, 350 char*& __to_next) const; 351 352 virtual int do_encoding() const _STLP_NOTHROW; 353 354 virtual bool do_always_noconv() const _STLP_NOTHROW; 355 356 virtual int do_length(state_type& __state, 357 const char* __from, 358 const char* __end, 359 size_t __max) const; 360 361 virtual int do_max_length() const _STLP_NOTHROW; 362 363 private: 364 codecvt(const codecvt<wchar_t, char, mbstate_t>&); 365 codecvt<wchar_t, char, mbstate_t>& operator = (const codecvt<wchar_t, char, mbstate_t>&); 366 }; 367 368 # endif 369 370 _STLP_TEMPLATE_NULL 371 class _STLP_CLASS_DECLSPEC codecvt_byname<char, char, mbstate_t> 372 : public codecvt<char, char, mbstate_t> { 373 public: 374 explicit codecvt_byname(const char* __name, size_t __refs = 0); 375 ~codecvt_byname(); 376 private: 377 codecvt_byname(const codecvt_byname<char, char, mbstate_t>&); 378 codecvt_byname<char, char, mbstate_t>& operator =(const codecvt_byname<char, char, mbstate_t>&); 379 }; 380 381 # ifndef _STLP_NO_WCHAR_T 382 _STLP_TEMPLATE_NULL 383 class _STLP_CLASS_DECLSPEC codecvt_byname<wchar_t, char, mbstate_t> 384 : public codecvt<wchar_t, char, mbstate_t> { 385 friend class _Locale_impl; 386 public: 387 explicit codecvt_byname(const char * __name, size_t __refs = 0); 388 389 protected: 390 ~codecvt_byname(); 391 392 virtual result do_out(state_type& __state, 393 const wchar_t* __from, 394 const wchar_t* __from_end, 395 const wchar_t*& __from_next, 396 char* __to, 397 char* __to_limit, 398 char*& __to_next) const; 399 400 virtual result do_in (state_type& __state, 401 const char* __from, 402 const char* __from_end, 403 const char*& __from_next, 404 wchar_t* __to, 405 wchar_t* __to_limit, 406 wchar_t*& __to_next) const; 407 408 virtual result do_unshift(state_type& __state, 409 char* __to, 410 char* __to_limit, 411 char*& __to_next) const; 412 413 virtual int do_encoding() const _STLP_NOTHROW; 414 415 virtual bool do_always_noconv() const _STLP_NOTHROW; 416 417 virtual int do_length(state_type& __state, 418 const char* __from, 419 const char* __end, 420 size_t __max) const; 421 422 virtual int do_max_length() const _STLP_NOTHROW; 423 424 private: 425 codecvt_byname(_Locale_codecvt* __cvt) 426 : _M_codecvt(__cvt) {} 427 428 codecvt_byname(const codecvt_byname<wchar_t, char, mbstate_t>&); 429 codecvt_byname<wchar_t, char, mbstate_t>& operator =(const codecvt_byname<wchar_t, char, mbstate_t>&); 430 _Locale_codecvt* _M_codecvt; 431 }; 432 433 # endif 434 435 _STLP_END_NAMESPACE 436 437 #endif /* _STLP_INTERNAL_CODECVT_H */ 438 439 // Local Variables: 440 // mode:C++ 441 // End: 442 443
