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00041 #ifndef _CPP_BITS_CODECVT_H
00042 #define _CPP_BITS_CODECVT_H 1
00043
00044 #pragma GCC system_header
00045
00046
00047 class codecvt_base
00048 {
00049 public:
00050 enum result
00051 {
00052 ok,
00053 partial,
00054 error,
00055 noconv
00056 };
00057 };
00058
00059
00060
00061
00062
00063 template<typename _InternT, typename _ExternT, typename _StateT>
00064 class __codecvt_abstract_base
00065 : public locale::facet, public codecvt_base
00066 {
00067 public:
00068
00069 typedef codecvt_base::result result;
00070 typedef _InternT intern_type;
00071 typedef _ExternT extern_type;
00072 typedef _StateT state_type;
00073
00074
00075 result
00076 out(state_type& __state, const intern_type* __from,
00077 const intern_type* __from_end, const intern_type*& __from_next,
00078 extern_type* __to, extern_type* __to_end,
00079 extern_type*& __to_next) const
00080 {
00081 return this->do_out(__state, __from, __from_end, __from_next,
00082 __to, __to_end, __to_next);
00083 }
00084
00085 result
00086 unshift(state_type& __state, extern_type* __to, extern_type* __to_end,
00087 extern_type*& __to_next) const
00088 { return this->do_unshift(__state, __to,__to_end,__to_next); }
00089
00090 result
00091 in(state_type& __state, const extern_type* __from,
00092 const extern_type* __from_end, const extern_type*& __from_next,
00093 intern_type* __to, intern_type* __to_end,
00094 intern_type*& __to_next) const
00095 {
00096 return this->do_in(__state, __from, __from_end, __from_next,
00097 __to, __to_end, __to_next);
00098 }
00099
00100 int
00101 encoding() const throw()
00102 { return this->do_encoding(); }
00103
00104 bool
00105 always_noconv() const throw()
00106 { return this->do_always_noconv(); }
00107
00108 int
00109 length(const state_type& __state, const extern_type* __from,
00110 const extern_type* __end, size_t __max) const
00111 { return this->do_length(__state, __from, __end, __max); }
00112
00113 int
00114 max_length() const throw()
00115 { return this->do_max_length(); }
00116
00117 protected:
00118 explicit
00119 __codecvt_abstract_base(size_t __refs = 0) : locale::facet(__refs) { }
00120
00121 virtual
00122 ~__codecvt_abstract_base() { }
00123
00124 virtual result
00125 do_out(state_type& __state, const intern_type* __from,
00126 const intern_type* __from_end, const intern_type*& __from_next,
00127 extern_type* __to, extern_type* __to_end,
00128 extern_type*& __to_next) const = 0;
00129
00130 virtual result
00131 do_unshift(state_type& __state, extern_type* __to,
00132 extern_type* __to_end, extern_type*& __to_next) const = 0;
00133
00134 virtual result
00135 do_in(state_type& __state, const extern_type* __from,
00136 const extern_type* __from_end, const extern_type*& __from_next,
00137 intern_type* __to, intern_type* __to_end,
00138 intern_type*& __to_next) const = 0;
00139
00140 virtual int
00141 do_encoding() const throw() = 0;
00142
00143 virtual bool
00144 do_always_noconv() const throw() = 0;
00145
00146 virtual int
00147 do_length(const state_type&, const extern_type* __from,
00148 const extern_type* __end, size_t __max) const = 0;
00149
00150 virtual int
00151 do_max_length() const throw() = 0;
00152 };
00153
00154
00155
00156 template<typename _InternT, typename _ExternT, typename _StateT>
00157 class codecvt
00158 : public __codecvt_abstract_base<_InternT, _ExternT, _StateT>
00159 {
00160 public:
00161
00162 typedef codecvt_base::result result;
00163 typedef _InternT intern_type;
00164 typedef _ExternT extern_type;
00165 typedef _StateT state_type;
00166
00167 protected:
00168 __c_locale _M_c_locale_codecvt;
00169
00170 public:
00171 static locale::id id;
00172
00173 explicit
00174 codecvt(size_t __refs = 0)
00175 : __codecvt_abstract_base<_InternT, _ExternT, _StateT> (__refs) { }
00176
00177 explicit
00178 codecvt(__c_locale __cloc, size_t __refs = 0);
00179
00180 protected:
00181 virtual
00182 ~codecvt() { }
00183
00184 virtual result
00185 do_out(state_type& __state, const intern_type* __from,
00186 const intern_type* __from_end, const intern_type*& __from_next,
00187 extern_type* __to, extern_type* __to_end,
00188 extern_type*& __to_next) const;
00189
00190 virtual result
00191 do_unshift(state_type& __state, extern_type* __to,
00192 extern_type* __to_end, extern_type*& __to_next) const;
00193
00194 virtual result
00195 do_in(state_type& __state, const extern_type* __from,
00196 const extern_type* __from_end, const extern_type*& __from_next,
00197 intern_type* __to, intern_type* __to_end,
00198 intern_type*& __to_next) const;
00199
00200 virtual int
00201 do_encoding() const throw();
00202
00203 virtual bool
00204 do_always_noconv() const throw();
00205
00206 virtual int
00207 do_length(const state_type&, const extern_type* __from,
00208 const extern_type* __end, size_t __max) const;
00209
00210 virtual int
00211 do_max_length() const throw();
00212 };
00213
00214 template<typename _InternT, typename _ExternT, typename _StateT>
00215 locale::id codecvt<_InternT, _ExternT, _StateT>::id;
00216
00217
00218 template<>
00219 class codecvt<char, char, mbstate_t>
00220 : public __codecvt_abstract_base<char, char, mbstate_t>
00221 {
00222 public:
00223
00224 typedef char intern_type;
00225 typedef char extern_type;
00226 typedef mbstate_t state_type;
00227
00228 protected:
00229 __c_locale _M_c_locale_codecvt;
00230
00231 public:
00232 static locale::id id;
00233
00234 explicit
00235 codecvt(size_t __refs = 0);
00236
00237 explicit
00238 codecvt(__c_locale __cloc, size_t __refs = 0);
00239
00240 protected:
00241 virtual
00242 ~codecvt();
00243
00244 virtual result
00245 do_out(state_type& __state, const intern_type* __from,
00246 const intern_type* __from_end, const intern_type*& __from_next,
00247 extern_type* __to, extern_type* __to_end,
00248 extern_type*& __to_next) const;
00249
00250 virtual result
00251 do_unshift(state_type& __state, extern_type* __to,
00252 extern_type* __to_end, extern_type*& __to_next) const;
00253
00254 virtual result
00255 do_in(state_type& __state, const extern_type* __from,
00256 const extern_type* __from_end, const extern_type*& __from_next,
00257 intern_type* __to, intern_type* __to_end,
00258 intern_type*& __to_next) const;
00259
00260 virtual int
00261 do_encoding() const throw();
00262
00263 virtual bool
00264 do_always_noconv() const throw();
00265
00266 virtual int
00267 do_length(const state_type&, const extern_type* __from,
00268 const extern_type* __end, size_t __max) const;
00269
00270 virtual int
00271 do_max_length() const throw();
00272 };
00273
00274 #ifdef _GLIBCPP_USE_WCHAR_T
00275
00276 template<>
00277 class codecvt<wchar_t, char, mbstate_t>
00278 : public __codecvt_abstract_base<wchar_t, char, mbstate_t>
00279 {
00280 public:
00281
00282 typedef wchar_t intern_type;
00283 typedef char extern_type;
00284 typedef mbstate_t state_type;
00285
00286 protected:
00287 __c_locale _M_c_locale_codecvt;
00288
00289 public:
00290 static locale::id id;
00291
00292 explicit
00293 codecvt(size_t __refs = 0);
00294
00295 explicit
00296 codecvt(__c_locale __cloc, size_t __refs = 0);
00297
00298 protected:
00299 virtual
00300 ~codecvt();
00301
00302 virtual result
00303 do_out(state_type& __state, const intern_type* __from,
00304 const intern_type* __from_end, const intern_type*& __from_next,
00305 extern_type* __to, extern_type* __to_end,
00306 extern_type*& __to_next) const;
00307
00308 virtual result
00309 do_unshift(state_type& __state,
00310 extern_type* __to, extern_type* __to_end,
00311 extern_type*& __to_next) const;
00312
00313 virtual result
00314 do_in(state_type& __state,
00315 const extern_type* __from, const extern_type* __from_end,
00316 const extern_type*& __from_next,
00317 intern_type* __to, intern_type* __to_end,
00318 intern_type*& __to_next) const;
00319
00320 virtual
00321 int do_encoding() const throw();
00322
00323 virtual
00324 bool do_always_noconv() const throw();
00325
00326 virtual
00327 int do_length(const state_type&, const extern_type* __from,
00328 const extern_type* __end, size_t __max) const;
00329
00330 virtual int
00331 do_max_length() const throw();
00332 };
00333 #endif //_GLIBCPP_USE_WCHAR_T
00334
00335
00336 template<typename _InternT, typename _ExternT, typename _StateT>
00337 class codecvt_byname : public codecvt<_InternT, _ExternT, _StateT>
00338 {
00339 public:
00340 explicit
00341 codecvt_byname(const char* __s, size_t __refs = 0)
00342 : codecvt<_InternT, _ExternT, _StateT>(__refs)
00343 {
00344 if (_M_c_locale_codecvt != _S_c_locale)
00345 _S_destroy_c_locale(_M_c_locale_codecvt);
00346 _S_create_c_locale(_M_c_locale_codecvt, __s);
00347 }
00348
00349 protected:
00350 virtual
00351 ~codecvt_byname() { }
00352 };
00353
00354
00355
00356 #ifdef _GLIBCPP_USE_WCHAR_T
00357 #include <bits/codecvt_specializations.h>
00358 #endif
00359
00360 #endif // _CPP_BITS_CODECVT_H