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Diffstat (limited to 'contrib/libstdc++/include/bits/codecvt.h')
| -rw-r--r-- | contrib/libstdc++/include/bits/codecvt.h | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/contrib/libstdc++/include/bits/codecvt.h b/contrib/libstdc++/include/bits/codecvt.h deleted file mode 100644 index d417a6ffcc4f..000000000000 --- a/contrib/libstdc++/include/bits/codecvt.h +++ /dev/null @@ -1,474 +0,0 @@ -// Locale support (codecvt) -*- C++ -*- - -// Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 -// Free Software Foundation, Inc. -// -// This file is part of the GNU ISO C++ Library. This library is free -// software; you can redistribute it and/or modify it under the -// terms of the GNU General Public License as published by the -// Free Software Foundation; either version 2, or (at your option) -// any later version. - -// This library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. - -// You should have received a copy of the GNU General Public License along -// with this library; see the file COPYING. If not, write to the Free -// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, -// USA. - -// As a special exception, you may use this file as part of a free software -// library without restriction. Specifically, if other files instantiate -// templates or use macros or inline functions from this file, or you compile -// this file and link it with other files to produce an executable, this -// file does not by itself cause the resulting executable to be covered by -// the GNU General Public License. This exception does not however -// invalidate any other reasons why the executable file might be covered by -// the GNU General Public License. - -/** @file bits/codecvt.h - * This is an internal header file, included by other library headers. - * You should not attempt to use it directly. - */ - -// -// ISO C++ 14882: 22.2.1.5 Template class codecvt -// - -// Written by Benjamin Kosnik <bkoz@redhat.com> - -#ifndef _CODECVT_H -#define _CODECVT_H 1 - -#pragma GCC system_header - -_GLIBCXX_BEGIN_NAMESPACE(std) - - /// @brief Empty base class for codecvt facet [22.2.1.5]. - class codecvt_base - { - public: - enum result - { - ok, - partial, - error, - noconv - }; - }; - - /** - * @brief Common base for codecvt functions. - * - * This template class provides implementations of the public functions - * that forward to the protected virtual functions. - * - * This template also provides abstract stubs for the protected virtual - * functions. - */ - template<typename _InternT, typename _ExternT, typename _StateT> - class __codecvt_abstract_base - : public locale::facet, public codecvt_base - { - public: - // Types: - typedef codecvt_base::result result; - typedef _InternT intern_type; - typedef _ExternT extern_type; - typedef _StateT state_type; - - // 22.2.1.5.1 codecvt members - /** - * @brief Convert from internal to external character set. - * - * Converts input string of intern_type to output string of - * extern_type. This is analogous to wcsrtombs. It does this by - * calling codecvt::do_out. - * - * The source and destination character sets are determined by the - * facet's locale, internal and external types. - * - * The characters in [from,from_end) are converted and written to - * [to,to_end). from_next and to_next are set to point to the - * character following the last successfully converted character, - * respectively. If the result needed no conversion, from_next and - * to_next are not affected. - * - * The @a state argument should be intialized if the input is at the - * beginning and carried from a previous call if continuing - * conversion. There are no guarantees about how @a state is used. - * - * The result returned is a member of codecvt_base::result. If - * all the input is converted, returns codecvt_base::ok. If no - * conversion is necessary, returns codecvt_base::noconv. If - * the input ends early or there is insufficient space in the - * output, returns codecvt_base::partial. Otherwise the - * conversion failed and codecvt_base::error is returned. - * - * @param state Persistent conversion state data. - * @param from Start of input. - * @param from_end End of input. - * @param from_next Returns start of unconverted data. - * @param to Start of output buffer. - * @param to_end End of output buffer. - * @param to_next Returns start of unused output area. - * @return codecvt_base::result. - */ - result - out(state_type& __state, const intern_type* __from, - const intern_type* __from_end, const intern_type*& __from_next, - extern_type* __to, extern_type* __to_end, - extern_type*& __to_next) const - { - return this->do_out(__state, __from, __from_end, __from_next, - __to, __to_end, __to_next); - } - - /** - * @brief Reset conversion state. - * - * Writes characters to output that would restore @a state to initial - * conditions. The idea is that if a partial conversion occurs, then - * the converting the characters written by this function would leave - * the state in initial conditions, rather than partial conversion - * state. It does this by calling codecvt::do_unshift(). - * - * For example, if 4 external characters always converted to 1 internal - * character, and input to in() had 6 external characters with state - * saved, this function would write two characters to the output and - * set the state to initialized conditions. - * - * The source and destination character sets are determined by the - * facet's locale, internal and external types. - * - * The result returned is a member of codecvt_base::result. If the - * state could be reset and data written, returns codecvt_base::ok. If - * no conversion is necessary, returns codecvt_base::noconv. If the - * output has insufficient space, returns codecvt_base::partial. - * Otherwise the reset failed and codecvt_base::error is returned. - * - * @param state Persistent conversion state data. - * @param to Start of output buffer. - * @param to_end End of output buffer. - * @param to_next Returns start of unused output area. - * @return codecvt_base::result. - */ - result - unshift(state_type& __state, extern_type* __to, extern_type* __to_end, - extern_type*& __to_next) const - { return this->do_unshift(__state, __to,__to_end,__to_next); } - - /** - * @brief Convert from external to internal character set. - * - * Converts input string of extern_type to output string of - * intern_type. This is analogous to mbsrtowcs. It does this by - * calling codecvt::do_in. - * - * The source and destination character sets are determined by the - * facet's locale, internal and external types. - * - * The characters in [from,from_end) are converted and written to - * [to,to_end). from_next and to_next are set to point to the - * character following the last successfully converted character, - * respectively. If the result needed no conversion, from_next and - * to_next are not affected. - * - * The @a state argument should be intialized if the input is at the - * beginning and carried from a previous call if continuing - * conversion. There are no guarantees about how @a state is used. - * - * The result returned is a member of codecvt_base::result. If - * all the input is converted, returns codecvt_base::ok. If no - * conversion is necessary, returns codecvt_base::noconv. If - * the input ends early or there is insufficient space in the - * output, returns codecvt_base::partial. Otherwise the - * conversion failed and codecvt_base::error is returned. - * - * @param state Persistent conversion state data. - * @param from Start of input. - * @param from_end End of input. - * @param from_next Returns start of unconverted data. - * @param to Start of output buffer. - * @param to_end End of output buffer. - * @param to_next Returns start of unused output area. - * @return codecvt_base::result. - */ - result - in(state_type& __state, const extern_type* __from, - const extern_type* __from_end, const extern_type*& __from_next, - intern_type* __to, intern_type* __to_end, - intern_type*& __to_next) const - { - return this->do_in(__state, __from, __from_end, __from_next, - __to, __to_end, __to_next); - } - - int - encoding() const throw() - { return this->do_encoding(); } - - bool - always_noconv() const throw() - { return this->do_always_noconv(); } - - int - length(state_type& __state, const extern_type* __from, - const extern_type* __end, size_t __max) const - { return this->do_length(__state, __from, __end, __max); } - - int - max_length() const throw() - { return this->do_max_length(); } - - protected: - explicit - __codecvt_abstract_base(size_t __refs = 0) : locale::facet(__refs) { } - - virtual - ~__codecvt_abstract_base() { } - - /** - * @brief Convert from internal to external character set. - * - * Converts input string of intern_type to output string of - * extern_type. This function is a hook for derived classes to change - * the value returned. @see out for more information. - */ - virtual result - do_out(state_type& __state, const intern_type* __from, - const intern_type* __from_end, const intern_type*& __from_next, - extern_type* __to, extern_type* __to_end, - extern_type*& __to_next) const = 0; - - virtual result - do_unshift(state_type& __state, extern_type* __to, - extern_type* __to_end, extern_type*& __to_next) const = 0; - - virtual result - do_in(state_type& __state, const extern_type* __from, - const extern_type* __from_end, const extern_type*& __from_next, - intern_type* __to, intern_type* __to_end, - intern_type*& __to_next) const = 0; - - virtual int - do_encoding() const throw() = 0; - - virtual bool - do_always_noconv() const throw() = 0; - - virtual int - do_length(state_type&, const extern_type* __from, - const extern_type* __end, size_t __max) const = 0; - - virtual int - do_max_length() const throw() = 0; - }; - - /// @brief class codecvt [22.2.1.5]. - /// NB: Generic, mostly useless implementation. - template<typename _InternT, typename _ExternT, typename _StateT> - class codecvt - : public __codecvt_abstract_base<_InternT, _ExternT, _StateT> - { - public: - // Types: - typedef codecvt_base::result result; - typedef _InternT intern_type; - typedef _ExternT extern_type; - typedef _StateT state_type; - - protected: - __c_locale _M_c_locale_codecvt; - - public: - static locale::id id; - - explicit - codecvt(size_t __refs = 0) - : __codecvt_abstract_base<_InternT, _ExternT, _StateT> (__refs) { } - - explicit - codecvt(__c_locale __cloc, size_t __refs = 0); - - protected: - virtual - ~codecvt() { } - - virtual result - do_out(state_type& __state, const intern_type* __from, - const intern_type* __from_end, const intern_type*& __from_next, - extern_type* __to, extern_type* __to_end, - extern_type*& __to_next) const; - - virtual result - do_unshift(state_type& __state, extern_type* __to, - extern_type* __to_end, extern_type*& __to_next) const; - - virtual result - do_in(state_type& __state, const extern_type* __from, - const extern_type* __from_end, const extern_type*& __from_next, - intern_type* __to, intern_type* __to_end, - intern_type*& __to_next) const; - - virtual int - do_encoding() const throw(); - - virtual bool - do_always_noconv() const throw(); - - virtual int - do_length(state_type&, const extern_type* __from, - const extern_type* __end, size_t __max) const; - - virtual int - do_max_length() const throw(); - }; - - template<typename _InternT, typename _ExternT, typename _StateT> - locale::id codecvt<_InternT, _ExternT, _StateT>::id; - - /// @brief class codecvt<char, char, mbstate_t> specialization. - template<> - class codecvt<char, char, mbstate_t> - : public __codecvt_abstract_base<char, char, mbstate_t> - { - public: - // Types: - typedef char intern_type; - typedef char extern_type; - typedef mbstate_t state_type; - - protected: - __c_locale _M_c_locale_codecvt; - - public: - static locale::id id; - - explicit - codecvt(size_t __refs = 0); - - explicit - codecvt(__c_locale __cloc, size_t __refs = 0); - - protected: - virtual - ~codecvt(); - - virtual result - do_out(state_type& __state, const intern_type* __from, - const intern_type* __from_end, const intern_type*& __from_next, - extern_type* __to, extern_type* __to_end, - extern_type*& __to_next) const; - - virtual result - do_unshift(state_type& __state, extern_type* __to, - extern_type* __to_end, extern_type*& __to_next) const; - - virtual result - do_in(state_type& __state, const extern_type* __from, - const extern_type* __from_end, const extern_type*& __from_next, - intern_type* __to, intern_type* __to_end, - intern_type*& __to_next) const; - - virtual int - do_encoding() const throw(); - - virtual bool - do_always_noconv() const throw(); - - virtual int - do_length(state_type&, const extern_type* __from, - const extern_type* __end, size_t __max) const; - - virtual int - do_max_length() const throw(); - }; - -#ifdef _GLIBCXX_USE_WCHAR_T - /// @brief class codecvt<wchar_t, char, mbstate_t> specialization. - template<> - class codecvt<wchar_t, char, mbstate_t> - : public __codecvt_abstract_base<wchar_t, char, mbstate_t> - { - public: - // Types: - typedef wchar_t intern_type; - typedef char extern_type; - typedef mbstate_t state_type; - - protected: - __c_locale _M_c_locale_codecvt; - - public: - static locale::id id; - - explicit - codecvt(size_t __refs = 0); - - explicit - codecvt(__c_locale __cloc, size_t __refs = 0); - - protected: - virtual - ~codecvt(); - - virtual result - do_out(state_type& __state, const intern_type* __from, - const intern_type* __from_end, const intern_type*& __from_next, - extern_type* __to, extern_type* __to_end, - extern_type*& __to_next) const; - - virtual result - do_unshift(state_type& __state, - extern_type* __to, extern_type* __to_end, - extern_type*& __to_next) const; - - virtual result - do_in(state_type& __state, - const extern_type* __from, const extern_type* __from_end, - const extern_type*& __from_next, - intern_type* __to, intern_type* __to_end, - intern_type*& __to_next) const; - - virtual - int do_encoding() const throw(); - - virtual - bool do_always_noconv() const throw(); - - virtual - int do_length(state_type&, const extern_type* __from, - const extern_type* __end, size_t __max) const; - - virtual int - do_max_length() const throw(); - }; -#endif //_GLIBCXX_USE_WCHAR_T - - /// @brief class codecvt_byname [22.2.1.6]. - template<typename _InternT, typename _ExternT, typename _StateT> - class codecvt_byname : public codecvt<_InternT, _ExternT, _StateT> - { - public: - explicit - codecvt_byname(const char* __s, size_t __refs = 0) - : codecvt<_InternT, _ExternT, _StateT>(__refs) - { - if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0) - { - this->_S_destroy_c_locale(this->_M_c_locale_codecvt); - this->_S_create_c_locale(this->_M_c_locale_codecvt, __s); - } - } - - protected: - virtual - ~codecvt_byname() { } - }; - -_GLIBCXX_END_NAMESPACE - -#endif // _CODECVT_H |