36 #ifndef _EXT_CODECVT_SPECIALIZATIONS_H
37 #define _EXT_CODECVT_SPECIALIZATIONS_H 1
43 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
55 typedef iconv_t descriptor_type;
65 descriptor_type _M_in_desc;
68 descriptor_type _M_out_desc;
84 : _M_in_desc(0), _M_out_desc(0), _M_ext_bom(0), _M_int_bom(0), _M_bytes(0)
88 encoding_state(
const char* __int,
const char* __ext,
89 int __ibom = 0,
int __ebom = 0,
int __bytes = 1)
90 : _M_int_enc(__int), _M_ext_enc(__ext), _M_in_desc(0), _M_out_desc(0),
91 _M_ext_bom(__ebom), _M_int_bom(__ibom), _M_bytes(__bytes)
102 encoding_state(
const encoding_state& __obj) : _M_in_desc(0), _M_out_desc(0)
103 { construct(__obj); }
107 operator=(
const encoding_state& __obj)
119 const descriptor_type __err = (iconv_t)(-1);
120 bool __test = _M_in_desc && _M_in_desc != __err;
121 __test &= _M_out_desc && _M_out_desc != __err;
126 character_ratio()
const
130 internal_encoding()
const
131 {
return _M_int_enc; }
135 {
return _M_int_bom; }
138 external_encoding()
const
139 {
return _M_ext_enc; }
143 {
return _M_ext_bom; }
145 const descriptor_type&
146 in_descriptor()
const
147 {
return _M_in_desc; }
149 const descriptor_type&
150 out_descriptor()
const
151 {
return _M_out_desc; }
157 const descriptor_type __err = (iconv_t)(-1);
158 const bool __have_encodings = _M_int_enc.
size() && _M_ext_enc.
size();
159 if (!_M_in_desc && __have_encodings)
161 _M_in_desc = iconv_open(_M_int_enc.
c_str(), _M_ext_enc.
c_str());
162 if (_M_in_desc == __err)
163 std::__throw_runtime_error(__N(
"encoding_state::_M_init "
164 "creating iconv input descriptor failed"));
166 if (!_M_out_desc && __have_encodings)
168 _M_out_desc = iconv_open(_M_ext_enc.
c_str(), _M_int_enc.
c_str());
169 if (_M_out_desc == __err)
170 std::__throw_runtime_error(__N(
"encoding_state::_M_init "
171 "creating iconv output descriptor failed"));
176 construct(
const encoding_state& __obj)
179 _M_int_enc = __obj._M_int_enc;
180 _M_ext_enc = __obj._M_ext_enc;
181 _M_ext_bom = __obj._M_ext_bom;
182 _M_int_bom = __obj._M_int_bom;
183 _M_bytes = __obj._M_bytes;
190 const descriptor_type __err = (iconv_t)(-1);
191 if (_M_in_desc && _M_in_desc != __err)
193 iconv_close(_M_in_desc);
196 if (_M_out_desc && _M_out_desc != __err)
198 iconv_close(_M_out_desc);
208 template<
typename _CharT>
215 _GLIBCXX_END_NAMESPACE
218 _GLIBCXX_BEGIN_NAMESPACE(std)
225 template<typename _InternT, typename _ExternT>
226 class
codecvt<_InternT, _ExternT, encoding_state>
231 typedef codecvt_base::result result;
232 typedef _InternT intern_type;
233 typedef _ExternT extern_type;
235 typedef state_type::descriptor_type descriptor_type;
246 codecvt(state_type& __enc,
size_t __refs = 0)
255 do_out(state_type& __state,
const intern_type* __from,
256 const intern_type* __from_end,
const intern_type*& __from_next,
257 extern_type* __to, extern_type* __to_end,
258 extern_type*& __to_next)
const;
261 do_unshift(state_type& __state, extern_type* __to,
262 extern_type* __to_end, extern_type*& __to_next)
const;
265 do_in(state_type& __state,
const extern_type* __from,
266 const extern_type* __from_end,
const extern_type*& __from_next,
267 intern_type* __to, intern_type* __to_end,
268 intern_type*& __to_next)
const;
271 do_encoding()
const throw();
274 do_always_noconv()
const throw();
277 do_length(state_type&,
const extern_type* __from,
278 const extern_type* __end,
size_t __max)
const;
281 do_max_length()
const throw();
284 template<
typename _InternT,
typename _ExternT>
292 template<
typename _Tp>
294 __iconv_adaptor(
size_t(*__func)(iconv_t, _Tp,
size_t*,
char**,
size_t*),
295 iconv_t __cd,
char** __inbuf,
size_t* __inbytes,
296 char** __outbuf,
size_t* __outbytes)
297 {
return __func(__cd, (_Tp)__inbuf, __inbytes, __outbuf, __outbytes); }
299 template<
typename _InternT,
typename _ExternT>
301 codecvt<_InternT, _ExternT, encoding_state>::
303 const intern_type* __from_end,
const intern_type*& __from_next,
304 extern_type* __to, extern_type* __to_end,
305 extern_type*& __to_next)
const
307 result __ret = codecvt_base::error;
310 const descriptor_type& __desc = __state.out_descriptor();
311 const size_t __fmultiple =
sizeof(intern_type);
312 size_t __fbytes = __fmultiple * (__from_end - __from);
313 const size_t __tmultiple =
sizeof(extern_type);
314 size_t __tbytes = __tmultiple * (__to_end - __to);
318 char* __cto =
reinterpret_cast<char*
>(__to);
327 int __int_bom = __state.internal_bom();
330 size_t __size = __from_end - __from;
331 intern_type* __cfixed =
static_cast<intern_type*
>
332 (__builtin_alloca(
sizeof(intern_type) * (__size + 1)));
333 __cfixed[0] =
static_cast<intern_type
>(__int_bom);
335 __cfrom =
reinterpret_cast<char*
>(__cfixed);
336 __conv = __iconv_adaptor(iconv, __desc, &__cfrom,
337 &__fbytes, &__cto, &__tbytes);
341 intern_type* __cfixed =
const_cast<intern_type*
>(__from);
342 __cfrom =
reinterpret_cast<char*
>(__cfixed);
343 __conv = __iconv_adaptor(iconv, __desc, &__cfrom, &__fbytes,
347 if (__conv !=
size_t(-1))
349 __from_next =
reinterpret_cast<const intern_type*
>(__cfrom);
350 __to_next =
reinterpret_cast<extern_type*
>(__cto);
351 __ret = codecvt_base::ok;
355 if (__fbytes < __fmultiple * (__from_end - __from))
357 __from_next =
reinterpret_cast<const intern_type*
>(__cfrom);
358 __to_next =
reinterpret_cast<extern_type*
>(__cto);
359 __ret = codecvt_base::partial;
362 __ret = codecvt_base::error;
368 template<
typename _InternT,
typename _ExternT>
371 do_unshift(state_type& __state, extern_type* __to,
372 extern_type* __to_end, extern_type*& __to_next)
const
374 result __ret = codecvt_base::error;
377 const descriptor_type& __desc = __state.in_descriptor();
378 const size_t __tmultiple =
sizeof(intern_type);
379 size_t __tlen = __tmultiple * (__to_end - __to);
383 char* __cto =
reinterpret_cast<char*
>(__to);
384 size_t __conv = __iconv_adaptor(iconv,__desc, NULL, NULL,
387 if (__conv !=
size_t(-1))
389 __to_next =
reinterpret_cast<extern_type*
>(__cto);
390 if (__tlen == __tmultiple * (__to_end - __to))
391 __ret = codecvt_base::noconv;
392 else if (__tlen == 0)
393 __ret = codecvt_base::ok;
395 __ret = codecvt_base::partial;
398 __ret = codecvt_base::error;
403 template<
typename _InternT,
typename _ExternT>
405 codecvt<_InternT, _ExternT, encoding_state>::
406 do_in(state_type& __state,
const extern_type* __from,
407 const extern_type* __from_end,
const extern_type*& __from_next,
408 intern_type* __to, intern_type* __to_end,
409 intern_type*& __to_next)
const
411 result __ret = codecvt_base::error;
414 const descriptor_type& __desc = __state.in_descriptor();
415 const size_t __fmultiple =
sizeof(extern_type);
416 size_t __flen = __fmultiple * (__from_end - __from);
417 const size_t __tmultiple =
sizeof(intern_type);
418 size_t __tlen = __tmultiple * (__to_end - __to);
422 char* __cto =
reinterpret_cast<char*
>(__to);
431 int __ext_bom = __state.external_bom();
434 size_t __size = __from_end - __from;
435 extern_type* __cfixed =
static_cast<extern_type*
>
436 (__builtin_alloca(
sizeof(extern_type) * (__size + 1)));
437 __cfixed[0] =
static_cast<extern_type
>(__ext_bom);
438 char_traits<extern_type>::copy(__cfixed + 1, __from, __size);
439 __cfrom =
reinterpret_cast<char*
>(__cfixed);
440 __conv = __iconv_adaptor(iconv, __desc, &__cfrom,
441 &__flen, &__cto, &__tlen);
445 extern_type* __cfixed =
const_cast<extern_type*
>(__from);
446 __cfrom =
reinterpret_cast<char*
>(__cfixed);
447 __conv = __iconv_adaptor(iconv, __desc, &__cfrom,
448 &__flen, &__cto, &__tlen);
452 if (__conv !=
size_t(-1))
454 __from_next =
reinterpret_cast<const extern_type*
>(__cfrom);
455 __to_next =
reinterpret_cast<intern_type*
>(__cto);
456 __ret = codecvt_base::ok;
460 if (__flen < static_cast<size_t>(__from_end - __from))
462 __from_next =
reinterpret_cast<const extern_type*
>(__cfrom);
463 __to_next =
reinterpret_cast<intern_type*
>(__cto);
464 __ret = codecvt_base::partial;
467 __ret = codecvt_base::error;
473 template<
typename _InternT,
typename _ExternT>
475 codecvt<_InternT, _ExternT, encoding_state>::
476 do_encoding()
const throw()
479 if (
sizeof(_ExternT) <=
sizeof(_InternT))
480 __ret =
sizeof(_InternT) /
sizeof(_ExternT);
484 template<
typename _InternT,
typename _ExternT>
486 codecvt<_InternT, _ExternT, encoding_state>::
487 do_always_noconv()
const throw()
490 template<
typename _InternT,
typename _ExternT>
492 codecvt<_InternT, _ExternT, encoding_state>::
493 do_length(state_type&,
const extern_type* __from,
494 const extern_type* __end,
size_t __max)
const
495 {
return std::min(__max, static_cast<size_t>(__end - __from)); }
499 template<
typename _InternT,
typename _ExternT>
501 codecvt<_InternT, _ExternT, encoding_state>::
502 do_max_length()
const throw()
505 _GLIBCXX_END_NAMESPACE