remove signal generator
This commit is contained in:
@@ -0,0 +1,635 @@
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// wstring_convert implementation -*- C++ -*-
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// Copyright (C) 2015-2025 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file bits/locale_conv.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{locale}
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*/
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#ifndef _LOCALE_CONV_H
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#define _LOCALE_CONV_H 1
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#if __cplusplus < 201103L
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# include <bits/c++0x_warning.h>
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#else
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#include <streambuf>
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#include <bits/stringfwd.h>
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#include <bits/allocator.h>
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#include <bits/codecvt.h>
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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/**
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* @addtogroup locales
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* @{
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*/
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template<typename _OutStr, typename _InChar, typename _Codecvt,
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typename _State, typename _Fn>
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bool
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__do_str_codecvt(const _InChar* __first, const _InChar* __last,
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_OutStr& __outstr, const _Codecvt& __cvt, _State& __state,
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size_t& __count, _Fn __fn)
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{
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if (__first == __last)
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{
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__outstr.clear();
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__count = 0;
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return true;
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}
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size_t __outchars = 0;
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auto __next = __first;
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const auto __maxlen = __cvt.max_length() + 1;
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codecvt_base::result __result;
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do
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{
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__outstr.resize(__outstr.size() + (__last - __next) * __maxlen);
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auto __outnext = &__outstr.front() + __outchars;
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auto const __outlast = &__outstr.back() + 1;
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__result = (__cvt.*__fn)(__state, __next, __last, __next,
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__outnext, __outlast, __outnext);
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__outchars = __outnext - &__outstr.front();
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}
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while (__result == codecvt_base::partial && __next != __last
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&& ptrdiff_t(__outstr.size() - __outchars) < __maxlen);
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if (__result == codecvt_base::error)
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{
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__count = __next - __first;
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return false;
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}
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// The codecvt facet will only return noconv when the types are
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// the same, so avoid instantiating basic_string::assign otherwise
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if _GLIBCXX17_CONSTEXPR (is_same<typename _Codecvt::intern_type,
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typename _Codecvt::extern_type>())
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if (__result == codecvt_base::noconv)
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{
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__outstr.assign(__first, __last);
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__count = __last - __first;
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return true;
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}
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__outstr.resize(__outchars);
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__count = __next - __first;
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return true;
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}
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// Convert narrow character string to wide.
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template<typename _CharT, typename _Traits, typename _Alloc, typename _State>
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inline bool
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__str_codecvt_in(const char* __first, const char* __last,
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basic_string<_CharT, _Traits, _Alloc>& __outstr,
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const codecvt<_CharT, char, _State>& __cvt,
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_State& __state, size_t& __count)
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{
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using _Codecvt = codecvt<_CharT, char, _State>;
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using _ConvFn
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= codecvt_base::result
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(_Codecvt::*)(_State&, const char*, const char*, const char*&,
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_CharT*, _CharT*, _CharT*&) const;
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_ConvFn __fn = &codecvt<_CharT, char, _State>::in;
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return __do_str_codecvt(__first, __last, __outstr, __cvt, __state,
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__count, __fn);
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}
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// As above, but with no __count parameter
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template<typename _CharT, typename _Traits, typename _Alloc, typename _State>
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inline bool
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__str_codecvt_in(const char* __first, const char* __last,
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basic_string<_CharT, _Traits, _Alloc>& __outstr,
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const codecvt<_CharT, char, _State>& __cvt)
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{
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_State __state = {};
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size_t __n;
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return __str_codecvt_in(__first, __last, __outstr, __cvt, __state, __n);
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}
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// As above, but returns false for partial conversion
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template<typename _CharT, typename _Traits, typename _Alloc, typename _State>
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inline bool
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__str_codecvt_in_all(const char* __first, const char* __last,
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basic_string<_CharT, _Traits, _Alloc>& __outstr,
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const codecvt<_CharT, char, _State>& __cvt)
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{
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_State __state = {};
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size_t __n;
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return __str_codecvt_in(__first, __last, __outstr, __cvt, __state, __n)
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&& (__n == size_t(__last - __first));
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}
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// Convert wide character string to narrow.
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template<typename _CharT, typename _Traits, typename _Alloc, typename _State>
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inline bool
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__str_codecvt_out(const _CharT* __first, const _CharT* __last,
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basic_string<char, _Traits, _Alloc>& __outstr,
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const codecvt<_CharT, char, _State>& __cvt,
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_State& __state, size_t& __count)
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{
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using _Codecvt = codecvt<_CharT, char, _State>;
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using _ConvFn
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= codecvt_base::result
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(_Codecvt::*)(_State&, const _CharT*, const _CharT*, const _CharT*&,
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char*, char*, char*&) const;
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_ConvFn __fn = &codecvt<_CharT, char, _State>::out;
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return __do_str_codecvt(__first, __last, __outstr, __cvt, __state,
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__count, __fn);
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}
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// As above, but with no __count parameter
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template<typename _CharT, typename _Traits, typename _Alloc, typename _State>
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inline bool
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__str_codecvt_out(const _CharT* __first, const _CharT* __last,
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basic_string<char, _Traits, _Alloc>& __outstr,
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const codecvt<_CharT, char, _State>& __cvt)
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{
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_State __state = {};
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size_t __n;
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return __str_codecvt_out(__first, __last, __outstr, __cvt, __state, __n);
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}
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// As above, but returns false for partial conversions
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template<typename _CharT, typename _Traits, typename _Alloc, typename _State>
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inline bool
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__str_codecvt_out_all(const _CharT* __first, const _CharT* __last,
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basic_string<char, _Traits, _Alloc>& __outstr,
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const codecvt<_CharT, char, _State>& __cvt)
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{
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_State __state = {};
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size_t __n;
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return __str_codecvt_out(__first, __last, __outstr, __cvt, __state, __n)
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&& (__n == size_t(__last - __first));
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}
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#ifdef _GLIBCXX_USE_CHAR8_T
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// Convert wide character string to narrow.
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template<typename _CharT, typename _Traits, typename _Alloc, typename _State>
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inline bool
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__str_codecvt_out(const _CharT* __first, const _CharT* __last,
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basic_string<char8_t, _Traits, _Alloc>& __outstr,
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const codecvt<_CharT, char8_t, _State>& __cvt,
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_State& __state, size_t& __count)
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{
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using _Codecvt = codecvt<_CharT, char8_t, _State>;
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using _ConvFn
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= codecvt_base::result
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(_Codecvt::*)(_State&, const _CharT*, const _CharT*, const _CharT*&,
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char8_t*, char8_t*, char8_t*&) const;
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_ConvFn __fn = &codecvt<_CharT, char8_t, _State>::out;
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return __do_str_codecvt(__first, __last, __outstr, __cvt, __state,
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__count, __fn);
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}
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template<typename _CharT, typename _Traits, typename _Alloc, typename _State>
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inline bool
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__str_codecvt_out(const _CharT* __first, const _CharT* __last,
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basic_string<char8_t, _Traits, _Alloc>& __outstr,
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const codecvt<_CharT, char8_t, _State>& __cvt)
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{
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_State __state = {};
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size_t __n;
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return __str_codecvt_out(__first, __last, __outstr, __cvt, __state, __n);
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}
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#endif // _GLIBCXX_USE_CHAR8_T
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namespace __detail
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{
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template<typename _Tp>
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struct _Scoped_ptr
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{
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__attribute__((__nonnull__(2)))
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explicit
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_Scoped_ptr(_Tp* __ptr) noexcept
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: _M_ptr(__ptr)
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{ }
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_Scoped_ptr(_Tp* __ptr, const char* __msg)
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: _M_ptr(__ptr)
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{
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if (!__ptr)
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__throw_logic_error(__msg);
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}
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~_Scoped_ptr() { delete _M_ptr; }
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_Scoped_ptr(const _Scoped_ptr&) = delete;
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_Scoped_ptr& operator=(const _Scoped_ptr&) = delete;
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__attribute__((__returns_nonnull__))
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_Tp* operator->() const noexcept { return _M_ptr; }
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_Tp& operator*() const noexcept { return *_M_ptr; }
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private:
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_Tp* _M_ptr;
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};
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}
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_GLIBCXX_BEGIN_NAMESPACE_CXX11
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/// String conversions
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template<typename _Codecvt, typename _Elem = wchar_t,
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typename _Wide_alloc = allocator<_Elem>,
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typename _Byte_alloc = allocator<char>>
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class _GLIBCXX17_DEPRECATED wstring_convert
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{
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public:
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typedef basic_string<char, char_traits<char>, _Byte_alloc> byte_string;
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typedef basic_string<_Elem, char_traits<_Elem>, _Wide_alloc> wide_string;
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typedef typename _Codecvt::state_type state_type;
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typedef typename wide_string::traits_type::int_type int_type;
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/// Default constructor.
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wstring_convert() : _M_cvt(new _Codecvt()) { }
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/** Constructor.
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*
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* @param __pcvt The facet to use for conversions.
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*
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* Takes ownership of @p __pcvt and will delete it in the destructor.
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*/
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explicit
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wstring_convert(_Codecvt* __pcvt) : _M_cvt(__pcvt, "wstring_convert")
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{ }
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/** Construct with an initial converstion state.
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*
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* @param __pcvt The facet to use for conversions.
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* @param __state Initial conversion state.
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*
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* Takes ownership of @p __pcvt and will delete it in the destructor.
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* The object's conversion state will persist between conversions.
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*/
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wstring_convert(_Codecvt* __pcvt, state_type __state)
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: _M_cvt(__pcvt, "std::wstring_convert"),
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_M_state(__state), _M_with_cvtstate(true)
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{ }
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/** Construct with error strings.
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*
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* @param __byte_err A string to return on failed conversions.
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* @param __wide_err A wide string to return on failed conversions.
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*/
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explicit
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wstring_convert(const byte_string& __byte_err,
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const wide_string& __wide_err = wide_string())
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: _M_cvt(new _Codecvt),
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_M_byte_err_string(__byte_err), _M_wide_err_string(__wide_err),
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_M_with_strings(true)
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{ }
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~wstring_convert() = default;
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 2176. Special members for wstring_convert and wbuffer_convert
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wstring_convert(const wstring_convert&) = delete;
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wstring_convert& operator=(const wstring_convert&) = delete;
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/// @{ Convert from bytes.
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wide_string
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from_bytes(char __byte)
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{
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char __bytes[2] = { __byte };
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return from_bytes(__bytes, __bytes+1);
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}
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wide_string
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from_bytes(const char* __ptr)
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{ return from_bytes(__ptr, __ptr+char_traits<char>::length(__ptr)); }
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wide_string
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from_bytes(const byte_string& __str)
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{
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auto __ptr = __str.data();
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return from_bytes(__ptr, __ptr + __str.size());
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}
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wide_string
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from_bytes(const char* __first, const char* __last)
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{
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if (!_M_with_cvtstate)
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_M_state = state_type();
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wide_string __out{ _M_wide_err_string.get_allocator() };
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if (__str_codecvt_in(__first, __last, __out, *_M_cvt, _M_state,
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_M_count))
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return __out;
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if (_M_with_strings)
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return _M_wide_err_string;
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__throw_range_error("wstring_convert::from_bytes");
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}
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/// @}
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/// @{ Convert to bytes.
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byte_string
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to_bytes(_Elem __wchar)
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{
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_Elem __wchars[2] = { __wchar };
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return to_bytes(__wchars, __wchars+1);
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}
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byte_string
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to_bytes(const _Elem* __ptr)
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{
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return to_bytes(__ptr, __ptr+wide_string::traits_type::length(__ptr));
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}
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byte_string
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to_bytes(const wide_string& __wstr)
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{
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auto __ptr = __wstr.data();
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return to_bytes(__ptr, __ptr + __wstr.size());
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}
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|
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byte_string
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to_bytes(const _Elem* __first, const _Elem* __last)
|
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{
|
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if (!_M_with_cvtstate)
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_M_state = state_type();
|
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byte_string __out{ _M_byte_err_string.get_allocator() };
|
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if (__str_codecvt_out(__first, __last, __out, *_M_cvt, _M_state,
|
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_M_count))
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return __out;
|
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if (_M_with_strings)
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return _M_byte_err_string;
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__throw_range_error("wstring_convert::to_bytes");
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||||
}
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||||
/// @}
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||||
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||||
// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 2174. wstring_convert::converted() should be noexcept
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||||
/// The number of elements successfully converted in the last conversion.
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||||
size_t converted() const noexcept { return _M_count; }
|
||||
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||||
/// The final conversion state of the last conversion.
|
||||
state_type state() const { return _M_state; }
|
||||
|
||||
private:
|
||||
__detail::_Scoped_ptr<_Codecvt> _M_cvt;
|
||||
byte_string _M_byte_err_string;
|
||||
wide_string _M_wide_err_string;
|
||||
state_type _M_state = state_type();
|
||||
size_t _M_count = 0;
|
||||
bool _M_with_cvtstate = false;
|
||||
bool _M_with_strings = false;
|
||||
};
|
||||
|
||||
_GLIBCXX_END_NAMESPACE_CXX11
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||||
|
||||
/// Buffer conversions
|
||||
template<typename _Codecvt, typename _Elem = wchar_t,
|
||||
typename _Tr = char_traits<_Elem>>
|
||||
class _GLIBCXX17_DEPRECATED wbuffer_convert
|
||||
: public basic_streambuf<_Elem, _Tr>
|
||||
{
|
||||
typedef basic_streambuf<_Elem, _Tr> _Wide_streambuf;
|
||||
|
||||
public:
|
||||
typedef typename _Codecvt::state_type state_type;
|
||||
|
||||
/// Default constructor.
|
||||
wbuffer_convert() : wbuffer_convert(nullptr) { }
|
||||
|
||||
/** Constructor.
|
||||
*
|
||||
* @param __bytebuf The underlying byte stream buffer.
|
||||
* @param __pcvt The facet to use for conversions.
|
||||
* @param __state Initial conversion state.
|
||||
*
|
||||
* Takes ownership of @p __pcvt and will delete it in the destructor.
|
||||
*/
|
||||
explicit
|
||||
wbuffer_convert(streambuf* __bytebuf, _Codecvt* __pcvt = new _Codecvt,
|
||||
state_type __state = state_type())
|
||||
: _M_buf(__bytebuf), _M_cvt(__pcvt, "std::wbuffer_convert"),
|
||||
_M_state(__state), _M_always_noconv(_M_cvt->always_noconv())
|
||||
{
|
||||
if (_M_buf)
|
||||
{
|
||||
this->setp(_M_put_area, _M_put_area + _S_buffer_length);
|
||||
this->setg(_M_get_area + _S_putback_length,
|
||||
_M_get_area + _S_putback_length,
|
||||
_M_get_area + _S_putback_length);
|
||||
}
|
||||
}
|
||||
|
||||
~wbuffer_convert() = default;
|
||||
|
||||
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
||||
// 2176. Special members for wstring_convert and wbuffer_convert
|
||||
wbuffer_convert(const wbuffer_convert&) = delete;
|
||||
wbuffer_convert& operator=(const wbuffer_convert&) = delete;
|
||||
|
||||
streambuf* rdbuf() const noexcept { return _M_buf; }
|
||||
|
||||
streambuf*
|
||||
rdbuf(streambuf *__bytebuf) noexcept
|
||||
{
|
||||
auto __prev = _M_buf;
|
||||
_M_buf = __bytebuf;
|
||||
return __prev;
|
||||
}
|
||||
|
||||
/// The conversion state following the last conversion.
|
||||
state_type state() const noexcept { return _M_state; }
|
||||
|
||||
protected:
|
||||
int
|
||||
sync()
|
||||
{ return _M_buf && _M_conv_put() && !_M_buf->pubsync() ? 0 : -1; }
|
||||
|
||||
typename _Wide_streambuf::int_type
|
||||
overflow(typename _Wide_streambuf::int_type __out)
|
||||
{
|
||||
if (!_M_buf || !_M_conv_put())
|
||||
return _Tr::eof();
|
||||
else if (!_Tr::eq_int_type(__out, _Tr::eof()))
|
||||
return this->sputc(__out);
|
||||
return _Tr::not_eof(__out);
|
||||
}
|
||||
|
||||
typename _Wide_streambuf::int_type
|
||||
underflow()
|
||||
{
|
||||
if (!_M_buf)
|
||||
return _Tr::eof();
|
||||
|
||||
if (this->gptr() < this->egptr() || (_M_buf && _M_conv_get()))
|
||||
return _Tr::to_int_type(*this->gptr());
|
||||
else
|
||||
return _Tr::eof();
|
||||
}
|
||||
|
||||
streamsize
|
||||
xsputn(const typename _Wide_streambuf::char_type* __s, streamsize __n)
|
||||
{
|
||||
if (!_M_buf || __n == 0)
|
||||
return 0;
|
||||
streamsize __done = 0;
|
||||
do
|
||||
{
|
||||
auto __nn = std::min<streamsize>(this->epptr() - this->pptr(),
|
||||
__n - __done);
|
||||
_Tr::copy(this->pptr(), __s + __done, __nn);
|
||||
this->pbump(__nn);
|
||||
__done += __nn;
|
||||
} while (__done < __n && _M_conv_put());
|
||||
return __done;
|
||||
}
|
||||
|
||||
private:
|
||||
// fill the get area from converted contents of the byte stream buffer
|
||||
bool
|
||||
_M_conv_get()
|
||||
{
|
||||
const streamsize __pb1 = this->gptr() - this->eback();
|
||||
const streamsize __pb2 = _S_putback_length;
|
||||
const streamsize __npb = std::min(__pb1, __pb2);
|
||||
|
||||
_Tr::move(_M_get_area + _S_putback_length - __npb,
|
||||
this->gptr() - __npb, __npb);
|
||||
|
||||
streamsize __nbytes = sizeof(_M_get_buf) - _M_unconv;
|
||||
__nbytes = std::min(__nbytes, _M_buf->in_avail());
|
||||
if (__nbytes < 1)
|
||||
__nbytes = 1;
|
||||
__nbytes = _M_buf->sgetn(_M_get_buf + _M_unconv, __nbytes);
|
||||
if (__nbytes < 1)
|
||||
return false;
|
||||
__nbytes += _M_unconv;
|
||||
|
||||
// convert _M_get_buf into _M_get_area
|
||||
|
||||
_Elem* __outbuf = _M_get_area + _S_putback_length;
|
||||
_Elem* __outnext = __outbuf;
|
||||
const char* __bnext = _M_get_buf;
|
||||
|
||||
codecvt_base::result __result;
|
||||
if (_M_always_noconv)
|
||||
__result = codecvt_base::noconv;
|
||||
else
|
||||
{
|
||||
_Elem* __outend = _M_get_area + _S_buffer_length;
|
||||
|
||||
__result = _M_cvt->in(_M_state,
|
||||
__bnext, __bnext + __nbytes, __bnext,
|
||||
__outbuf, __outend, __outnext);
|
||||
}
|
||||
|
||||
if (__result == codecvt_base::noconv)
|
||||
{
|
||||
// cast is safe because noconv means _Elem is same type as char
|
||||
auto __get_buf = reinterpret_cast<const _Elem*>(_M_get_buf);
|
||||
_Tr::copy(__outbuf, __get_buf, __nbytes);
|
||||
_M_unconv = 0;
|
||||
return true;
|
||||
}
|
||||
|
||||
if ((_M_unconv = _M_get_buf + __nbytes - __bnext))
|
||||
char_traits<char>::move(_M_get_buf, __bnext, _M_unconv);
|
||||
|
||||
this->setg(__outbuf, __outbuf, __outnext);
|
||||
|
||||
return __result != codecvt_base::error;
|
||||
}
|
||||
|
||||
// unused
|
||||
bool
|
||||
_M_put(...)
|
||||
{ return false; }
|
||||
|
||||
bool
|
||||
_M_put(const char* __p, streamsize __n)
|
||||
{
|
||||
if (_M_buf->sputn(__p, __n) < __n)
|
||||
return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
// convert the put area and write to the byte stream buffer
|
||||
bool
|
||||
_M_conv_put()
|
||||
{
|
||||
_Elem* const __first = this->pbase();
|
||||
const _Elem* const __last = this->pptr();
|
||||
const streamsize __pending = __last - __first;
|
||||
|
||||
if (_M_always_noconv)
|
||||
return _M_put(__first, __pending);
|
||||
|
||||
char __outbuf[2 * _S_buffer_length];
|
||||
|
||||
const _Elem* __next = __first;
|
||||
const _Elem* __start;
|
||||
do
|
||||
{
|
||||
__start = __next;
|
||||
char* __outnext = __outbuf;
|
||||
char* const __outlast = __outbuf + sizeof(__outbuf);
|
||||
auto __result = _M_cvt->out(_M_state, __next, __last, __next,
|
||||
__outnext, __outlast, __outnext);
|
||||
if (__result == codecvt_base::error)
|
||||
return false;
|
||||
else if (__result == codecvt_base::noconv)
|
||||
return _M_put(__next, __pending);
|
||||
|
||||
if (!_M_put(__outbuf, __outnext - __outbuf))
|
||||
return false;
|
||||
}
|
||||
while (__next != __last && __next != __start);
|
||||
|
||||
if (__next != __last)
|
||||
_Tr::move(__first, __next, __last - __next);
|
||||
|
||||
this->pbump(__first - __next);
|
||||
return __next != __first;
|
||||
}
|
||||
|
||||
streambuf* _M_buf;
|
||||
__detail::_Scoped_ptr<_Codecvt> _M_cvt;
|
||||
state_type _M_state;
|
||||
|
||||
static const streamsize _S_buffer_length = 32;
|
||||
static const streamsize _S_putback_length = 3;
|
||||
_Elem _M_put_area[_S_buffer_length];
|
||||
_Elem _M_get_area[_S_buffer_length];
|
||||
streamsize _M_unconv = 0;
|
||||
char _M_get_buf[_S_buffer_length-_S_putback_length];
|
||||
bool _M_always_noconv;
|
||||
};
|
||||
|
||||
/// @} group locales
|
||||
|
||||
_GLIBCXX_END_NAMESPACE_VERSION
|
||||
} // namespace
|
||||
|
||||
#endif // __cplusplus
|
||||
|
||||
#endif /* _LOCALE_CONV_H */
|
||||
Reference in New Issue
Block a user