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// istream classes -*- C++ -*- |
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// Copyright (C) 1997-2013 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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// . |
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/** @file bits/istream.tcc |
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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{istream} |
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*/ |
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// |
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// ISO C++ 14882: 27.6.1 Input streams |
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// |
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#ifndef _ISTREAM_TCC |
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#define _ISTREAM_TCC 1 |
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#pragma GCC system_header |
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#include |
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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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template |
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basic_istream<_CharT, _Traits>::sentry:: |
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sentry(basic_istream<_CharT, _Traits>& __in, bool __noskip) : _M_ok(false) |
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{ |
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ios_base::iostate __err = ios_base::goodbit; |
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if (__in.good()) |
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{ |
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if (__in.tie()) |
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__in.tie()->flush(); |
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if (!__noskip && bool(__in.flags() & ios_base::skipws)) |
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{ |
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const __int_type __eof = traits_type::eof(); |
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__streambuf_type* __sb = __in.rdbuf(); |
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__int_type __c = __sb->sgetc(); |
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const __ctype_type& __ct = __check_facet(__in._M_ctype); |
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while (!traits_type::eq_int_type(__c, __eof) |
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&& __ct.is(ctype_base::space, |
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traits_type::to_char_type(__c))) |
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__c = __sb->snextc(); |
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// _GLIBCXX_RESOLVE_LIB_DEFECTS |
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// 195. Should basic_istream::sentry's constructor ever |
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// set eofbit? |
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if (traits_type::eq_int_type(__c, __eof)) |
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__err |= ios_base::eofbit; |
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} |
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} |
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if (__in.good() && __err == ios_base::goodbit) |
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_M_ok = true; |
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else |
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{ |
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__err |= ios_base::failbit; |
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__in.setstate(__err); |
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} |
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} |
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template |
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template |
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basic_istream<_CharT, _Traits>& |
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basic_istream<_CharT, _Traits>:: |
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_M_extract(_ValueT& __v) |
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{ |
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sentry __cerb(*this, false); |
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if (__cerb) |
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{ |
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ios_base::iostate __err = ios_base::goodbit; |
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__try |
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{ |
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const __num_get_type& __ng = __check_facet(this->_M_num_get); |
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__ng.get(*this, 0, *this, __err, __v); |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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this->_M_setstate(ios_base::badbit); |
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__throw_exception_again; |
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} |
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__catch(...) |
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{ this->_M_setstate(ios_base::badbit); } |
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if (__err) |
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this->setstate(__err); |
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} |
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return *this; |
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} |
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template |
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basic_istream<_CharT, _Traits>& |
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basic_istream<_CharT, _Traits>:: |
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operator>>(short& __n) |
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{ |
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// _GLIBCXX_RESOLVE_LIB_DEFECTS |
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// 118. basic_istream uses nonexistent num_get member functions. |
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sentry __cerb(*this, false); |
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if (__cerb) |
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{ |
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ios_base::iostate __err = ios_base::goodbit; |
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__try |
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{ |
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long __l; |
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const __num_get_type& __ng = __check_facet(this->_M_num_get); |
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__ng.get(*this, 0, *this, __err, __l); |
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// _GLIBCXX_RESOLVE_LIB_DEFECTS |
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// 696. istream::operator>>(int&) broken. |
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if (__l < __gnu_cxx::__numeric_traits::__min) |
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{ |
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__err |= ios_base::failbit; |
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__n = __gnu_cxx::__numeric_traits::__min; |
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} |
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else if (__l > __gnu_cxx::__numeric_traits::__max) |
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{ |
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__err |= ios_base::failbit; |
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__n = __gnu_cxx::__numeric_traits::__max; |
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} |
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else |
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__n = short(__l); |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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this->_M_setstate(ios_base::badbit); |
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__throw_exception_again; |
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} |
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__catch(...) |
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{ this->_M_setstate(ios_base::badbit); } |
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if (__err) |
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this->setstate(__err); |
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} |
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return *this; |
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} |
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template |
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basic_istream<_CharT, _Traits>& |
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basic_istream<_CharT, _Traits>:: |
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operator>>(int& __n) |
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{ |
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// _GLIBCXX_RESOLVE_LIB_DEFECTS |
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// 118. basic_istream uses nonexistent num_get member functions. |
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sentry __cerb(*this, false); |
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if (__cerb) |
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{ |
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ios_base::iostate __err = ios_base::goodbit; |
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__try |
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{ |
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long __l; |
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const __num_get_type& __ng = __check_facet(this->_M_num_get); |
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__ng.get(*this, 0, *this, __err, __l); |
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// _GLIBCXX_RESOLVE_LIB_DEFECTS |
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// 696. istream::operator>>(int&) broken. |
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if (__l < __gnu_cxx::__numeric_traits::__min) |
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{ |
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__err |= ios_base::failbit; |
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__n = __gnu_cxx::__numeric_traits::__min; |
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} |
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else if (__l > __gnu_cxx::__numeric_traits::__max) |
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{ |
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__err |= ios_base::failbit; |
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__n = __gnu_cxx::__numeric_traits::__max; |
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} |
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else |
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__n = int(__l); |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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this->_M_setstate(ios_base::badbit); |
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__throw_exception_again; |
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} |
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__catch(...) |
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{ this->_M_setstate(ios_base::badbit); } |
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if (__err) |
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this->setstate(__err); |
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} |
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return *this; |
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} |
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template |
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basic_istream<_CharT, _Traits>& |
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basic_istream<_CharT, _Traits>:: |
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operator>>(__streambuf_type* __sbout) |
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{ |
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ios_base::iostate __err = ios_base::goodbit; |
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sentry __cerb(*this, false); |
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if (__cerb && __sbout) |
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{ |
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__try |
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{ |
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bool __ineof; |
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if (!__copy_streambufs_eof(this->rdbuf(), __sbout, __ineof)) |
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__err |= ios_base::failbit; |
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if (__ineof) |
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__err |= ios_base::eofbit; |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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this->_M_setstate(ios_base::failbit); |
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__throw_exception_again; |
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} |
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__catch(...) |
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{ this->_M_setstate(ios_base::failbit); } |
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} |
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else if (!__sbout) |
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__err |= ios_base::failbit; |
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if (__err) |
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this->setstate(__err); |
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return *this; |
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} |
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template |
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typename basic_istream<_CharT, _Traits>::int_type |
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basic_istream<_CharT, _Traits>:: |
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get(void) |
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{ |
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const int_type __eof = traits_type::eof(); |
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int_type __c = __eof; |
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_M_gcount = 0; |
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ios_base::iostate __err = ios_base::goodbit; |
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sentry __cerb(*this, true); |
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if (__cerb) |
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{ |
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__try |
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{ |
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__c = this->rdbuf()->sbumpc(); |
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// 27.6.1.1 paragraph 3 |
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if (!traits_type::eq_int_type(__c, __eof)) |
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_M_gcount = 1; |
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else |
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__err |= ios_base::eofbit; |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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this->_M_setstate(ios_base::badbit); |
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__throw_exception_again; |
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} |
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__catch(...) |
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{ this->_M_setstate(ios_base::badbit); } |
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} |
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if (!_M_gcount) |
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__err |= ios_base::failbit; |
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if (__err) |
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this->setstate(__err); |
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return __c; |
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} |
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template |
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basic_istream<_CharT, _Traits>& |
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basic_istream<_CharT, _Traits>:: |
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get(char_type& __c) |
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{ |
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_M_gcount = 0; |
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ios_base::iostate __err = ios_base::goodbit; |
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sentry __cerb(*this, true); |
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if (__cerb) |
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{ |
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__try |
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{ |
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const int_type __cb = this->rdbuf()->sbumpc(); |
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// 27.6.1.1 paragraph 3 |
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if (!traits_type::eq_int_type(__cb, traits_type::eof())) |
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{ |
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_M_gcount = 1; |
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__c = traits_type::to_char_type(__cb); |
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} |
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else |
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__err |= ios_base::eofbit; |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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this->_M_setstate(ios_base::badbit); |
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__throw_exception_again; |
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} |
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__catch(...) |
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{ this->_M_setstate(ios_base::badbit); } |
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} |
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if (!_M_gcount) |
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__err |= ios_base::failbit; |
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if (__err) |
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this->setstate(__err); |
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return *this; |
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} |
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template |
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basic_istream<_CharT, _Traits>& |
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basic_istream<_CharT, _Traits>:: |
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get(char_type* __s, streamsize __n, char_type __delim) |
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{ |
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_M_gcount = 0; |
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ios_base::iostate __err = ios_base::goodbit; |
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sentry __cerb(*this, true); |
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if (__cerb) |
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{ |
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__try |
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{ |
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const int_type __idelim = traits_type::to_int_type(__delim); |
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const int_type __eof = traits_type::eof(); |
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__streambuf_type* __sb = this->rdbuf(); |
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int_type __c = __sb->sgetc(); |
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while (_M_gcount + 1 < __n |
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&& !traits_type::eq_int_type(__c, __eof) |
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&& !traits_type::eq_int_type(__c, __idelim)) |
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{ |
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*__s++ = traits_type::to_char_type(__c); |
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++_M_gcount; |
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__c = __sb->snextc(); |
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} |
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if (traits_type::eq_int_type(__c, __eof)) |
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__err |= ios_base::eofbit; |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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this->_M_setstate(ios_base::badbit); |
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__throw_exception_again; |
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} |
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__catch(...) |
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{ this->_M_setstate(ios_base::badbit); } |
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} |
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// _GLIBCXX_RESOLVE_LIB_DEFECTS |
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// 243. get and getline when sentry reports failure. |
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if (__n > 0) |
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*__s = char_type(); |
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if (!_M_gcount) |
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__err |= ios_base::failbit; |
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if (__err) |
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this->setstate(__err); |
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return *this; |
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} |
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352 |
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template |
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basic_istream<_CharT, _Traits>& |
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basic_istream<_CharT, _Traits>:: |
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get(__streambuf_type& __sb, char_type __delim) |
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{ |
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_M_gcount = 0; |
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ios_base::iostate __err = ios_base::goodbit; |
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sentry __cerb(*this, true); |
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if (__cerb) |
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{ |
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__try |
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{ |
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const int_type __idelim = traits_type::to_int_type(__delim); |
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const int_type __eof = traits_type::eof(); |
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__streambuf_type* __this_sb = this->rdbuf(); |
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int_type __c = __this_sb->sgetc(); |
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char_type __c2 = traits_type::to_char_type(__c); |
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while (!traits_type::eq_int_type(__c, __eof) |
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&& !traits_type::eq_int_type(__c, __idelim) |
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&& !traits_type::eq_int_type(__sb.sputc(__c2), __eof)) |
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{ |
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++_M_gcount; |
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__c = __this_sb->snextc(); |
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__c2 = traits_type::to_char_type(__c); |
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} |
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if (traits_type::eq_int_type(__c, __eof)) |
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__err |= ios_base::eofbit; |
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} |
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382 |
__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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this->_M_setstate(ios_base::badbit); |
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__throw_exception_again; |
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386 |
} |
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__catch(...) |
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388 |
{ this->_M_setstate(ios_base::badbit); } |
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389 |
} |
|
|
390 |
if (!_M_gcount) |
|
|
391 |
__err |= ios_base::failbit; |
|
|
392 |
if (__err) |
|
|
393 |
this->setstate(__err); |
|
|
394 |
return *this; |
|
|
395 |
} |
|
|
396 |
|
|
|
397 |
template |
|
|
398 |
basic_istream<_CharT, _Traits>& |
|
|
399 |
basic_istream<_CharT, _Traits>:: |
|
|
400 |
getline(char_type* __s, streamsize __n, char_type __delim) |
|
|
401 |
{ |
|
|
402 |
_M_gcount = 0; |
|
|
403 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
404 |
sentry __cerb(*this, true); |
|
|
405 |
if (__cerb) |
|
|
406 |
{ |
|
|
407 |
__try |
|
|
408 |
{ |
|
|
409 |
const int_type __idelim = traits_type::to_int_type(__delim); |
|
|
410 |
const int_type __eof = traits_type::eof(); |
|
|
411 |
__streambuf_type* __sb = this->rdbuf(); |
|
|
412 |
int_type __c = __sb->sgetc(); |
|
|
413 |
|
|
|
414 |
while (_M_gcount + 1 < __n |
|
|
415 |
&& !traits_type::eq_int_type(__c, __eof) |
|
|
416 |
&& !traits_type::eq_int_type(__c, __idelim)) |
|
|
417 |
{ |
|
|
418 |
*__s++ = traits_type::to_char_type(__c); |
|
|
419 |
__c = __sb->snextc(); |
|
|
420 |
++_M_gcount; |
|
|
421 |
} |
|
|
422 |
if (traits_type::eq_int_type(__c, __eof)) |
|
|
423 |
__err |= ios_base::eofbit; |
|
|
424 |
else |
|
|
425 |
{ |
|
|
426 |
if (traits_type::eq_int_type(__c, __idelim)) |
|
|
427 |
{ |
|
|
428 |
__sb->sbumpc(); |
|
|
429 |
++_M_gcount; |
|
|
430 |
} |
|
|
431 |
else |
|
|
432 |
__err |= ios_base::failbit; |
|
|
433 |
} |
|
|
434 |
} |
|
|
435 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
436 |
{ |
|
|
437 |
this->_M_setstate(ios_base::badbit); |
|
|
438 |
__throw_exception_again; |
|
|
439 |
} |
|
|
440 |
__catch(...) |
|
|
441 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
442 |
} |
|
|
443 |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
|
|
444 |
// 243. get and getline when sentry reports failure. |
|
|
445 |
if (__n > 0) |
|
|
446 |
*__s = char_type(); |
|
|
447 |
if (!_M_gcount) |
|
|
448 |
__err |= ios_base::failbit; |
|
|
449 |
if (__err) |
|
|
450 |
this->setstate(__err); |
|
|
451 |
return *this; |
|
|
452 |
} |
|
|
453 |
|
|
|
454 |
// We provide three overloads, since the first two are much simpler |
|
|
455 |
// than the general case. Also, the latter two can thus adopt the |
|
|
456 |
// same "batchy" strategy used by getline above. |
|
|
457 |
template |
|
|
458 |
basic_istream<_CharT, _Traits>& |
|
|
459 |
basic_istream<_CharT, _Traits>:: |
|
|
460 |
ignore(void) |
|
|
461 |
{ |
|
|
462 |
_M_gcount = 0; |
|
|
463 |
sentry __cerb(*this, true); |
|
|
464 |
if (__cerb) |
|
|
465 |
{ |
|
|
466 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
467 |
__try |
|
|
468 |
{ |
|
|
469 |
const int_type __eof = traits_type::eof(); |
|
|
470 |
__streambuf_type* __sb = this->rdbuf(); |
|
|
471 |
|
|
|
472 |
if (traits_type::eq_int_type(__sb->sbumpc(), __eof)) |
|
|
473 |
__err |= ios_base::eofbit; |
|
|
474 |
else |
|
|
475 |
_M_gcount = 1; |
|
|
476 |
} |
|
|
477 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
478 |
{ |
|
|
479 |
this->_M_setstate(ios_base::badbit); |
|
|
480 |
__throw_exception_again; |
|
|
481 |
} |
|
|
482 |
__catch(...) |
|
|
483 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
484 |
if (__err) |
|
|
485 |
this->setstate(__err); |
|
|
486 |
} |
|
|
487 |
return *this; |
|
|
488 |
} |
|
|
489 |
|
|
|
490 |
template |
|
|
491 |
basic_istream<_CharT, _Traits>& |
|
|
492 |
basic_istream<_CharT, _Traits>:: |
|
|
493 |
ignore(streamsize __n) |
|
|
494 |
{ |
|
|
495 |
_M_gcount = 0; |
|
|
496 |
sentry __cerb(*this, true); |
|
|
497 |
if (__cerb && __n > 0) |
|
|
498 |
{ |
|
|
499 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
500 |
__try |
|
|
501 |
{ |
|
|
502 |
const int_type __eof = traits_type::eof(); |
|
|
503 |
__streambuf_type* __sb = this->rdbuf(); |
|
|
504 |
int_type __c = __sb->sgetc(); |
|
|
505 |
|
|
|
506 |
// N.B. On LFS-enabled platforms streamsize is still 32 bits |
|
|
507 |
// wide: if we want to implement the standard mandated behavior |
|
|
508 |
// for n == max() (see 27.6.1.3/24) we are at risk of signed |
|
|
509 |
// integer overflow: thus these contortions. Also note that, |
|
|
510 |
// by definition, when more than 2G chars are actually ignored, |
|
|
511 |
// _M_gcount (the return value of gcount, that is) cannot be |
|
|
512 |
// really correct, being unavoidably too small. |
|
|
513 |
bool __large_ignore = false; |
|
|
514 |
while (true) |
|
|
515 |
{ |
|
|
516 |
while (_M_gcount < __n |
|
|
517 |
&& !traits_type::eq_int_type(__c, __eof)) |
|
|
518 |
{ |
|
|
519 |
++_M_gcount; |
|
|
520 |
__c = __sb->snextc(); |
|
|
521 |
} |
|
|
522 |
if (__n == __gnu_cxx::__numeric_traits::__max |
|
|
523 |
&& !traits_type::eq_int_type(__c, __eof)) |
|
|
524 |
{ |
|
|
525 |
_M_gcount = |
|
|
526 |
__gnu_cxx::__numeric_traits::__min; |
|
|
527 |
__large_ignore = true; |
|
|
528 |
} |
|
|
529 |
else |
|
|
530 |
break; |
|
|
531 |
} |
|
|
532 |
|
|
|
533 |
if (__large_ignore) |
|
|
534 |
_M_gcount = __gnu_cxx::__numeric_traits::__max; |
|
|
535 |
|
|
|
536 |
if (traits_type::eq_int_type(__c, __eof)) |
|
|
537 |
__err |= ios_base::eofbit; |
|
|
538 |
} |
|
|
539 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
540 |
{ |
|
|
541 |
this->_M_setstate(ios_base::badbit); |
|
|
542 |
__throw_exception_again; |
|
|
543 |
} |
|
|
544 |
__catch(...) |
|
|
545 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
546 |
if (__err) |
|
|
547 |
this->setstate(__err); |
|
|
548 |
} |
|
|
549 |
return *this; |
|
|
550 |
} |
|
|
551 |
|
|
|
552 |
template |
|
|
553 |
basic_istream<_CharT, _Traits>& |
|
|
554 |
basic_istream<_CharT, _Traits>:: |
|
|
555 |
ignore(streamsize __n, int_type __delim) |
|
|
556 |
{ |
|
|
557 |
_M_gcount = 0; |
|
|
558 |
sentry __cerb(*this, true); |
|
|
559 |
if (__cerb && __n > 0) |
|
|
560 |
{ |
|
|
561 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
562 |
__try |
|
|
563 |
{ |
|
|
564 |
const int_type __eof = traits_type::eof(); |
|
|
565 |
__streambuf_type* __sb = this->rdbuf(); |
|
|
566 |
int_type __c = __sb->sgetc(); |
|
|
567 |
|
|
|
568 |
// See comment above. |
|
|
569 |
bool __large_ignore = false; |
|
|
570 |
while (true) |
|
|
571 |
{ |
|
|
572 |
while (_M_gcount < __n |
|
|
573 |
&& !traits_type::eq_int_type(__c, __eof) |
|
|
574 |
&& !traits_type::eq_int_type(__c, __delim)) |
|
|
575 |
{ |
|
|
576 |
++_M_gcount; |
|
|
577 |
__c = __sb->snextc(); |
|
|
578 |
} |
|
|
579 |
if (__n == __gnu_cxx::__numeric_traits::__max |
|
|
580 |
&& !traits_type::eq_int_type(__c, __eof) |
|
|
581 |
&& !traits_type::eq_int_type(__c, __delim)) |
|
|
582 |
{ |
|
|
583 |
_M_gcount = |
|
|
584 |
__gnu_cxx::__numeric_traits::__min; |
|
|
585 |
__large_ignore = true; |
|
|
586 |
} |
|
|
587 |
else |
|
|
588 |
break; |
|
|
589 |
} |
|
|
590 |
|
|
|
591 |
if (__large_ignore) |
|
|
592 |
_M_gcount = __gnu_cxx::__numeric_traits::__max; |
|
|
593 |
|
|
|
594 |
if (traits_type::eq_int_type(__c, __eof)) |
|
|
595 |
__err |= ios_base::eofbit; |
|
|
596 |
else if (traits_type::eq_int_type(__c, __delim)) |
|
|
597 |
{ |
|
|
598 |
if (_M_gcount |
|
|
599 |
< __gnu_cxx::__numeric_traits::__max) |
|
|
600 |
++_M_gcount; |
|
|
601 |
__sb->sbumpc(); |
|
|
602 |
} |
|
|
603 |
} |
|
|
604 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
605 |
{ |
|
|
606 |
this->_M_setstate(ios_base::badbit); |
|
|
607 |
__throw_exception_again; |
|
|
608 |
} |
|
|
609 |
__catch(...) |
|
|
610 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
611 |
if (__err) |
|
|
612 |
this->setstate(__err); |
|
|
613 |
} |
|
|
614 |
return *this; |
|
|
615 |
} |
|
|
616 |
|
|
|
617 |
template |
|
|
618 |
typename basic_istream<_CharT, _Traits>::int_type |
|
|
619 |
basic_istream<_CharT, _Traits>:: |
|
|
620 |
peek(void) |
|
|
621 |
{ |
|
|
622 |
int_type __c = traits_type::eof(); |
|
|
623 |
_M_gcount = 0; |
|
|
624 |
sentry __cerb(*this, true); |
|
|
625 |
if (__cerb) |
|
|
626 |
{ |
|
|
627 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
628 |
__try |
|
|
629 |
{ |
|
|
630 |
__c = this->rdbuf()->sgetc(); |
|
|
631 |
if (traits_type::eq_int_type(__c, traits_type::eof())) |
|
|
632 |
__err |= ios_base::eofbit; |
|
|
633 |
} |
|
|
634 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
635 |
{ |
|
|
636 |
this->_M_setstate(ios_base::badbit); |
|
|
637 |
__throw_exception_again; |
|
|
638 |
} |
|
|
639 |
__catch(...) |
|
|
640 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
641 |
if (__err) |
|
|
642 |
this->setstate(__err); |
|
|
643 |
} |
|
|
644 |
return __c; |
|
|
645 |
} |
|
|
646 |
|
|
|
647 |
template |
|
|
648 |
basic_istream<_CharT, _Traits>& |
|
|
649 |
basic_istream<_CharT, _Traits>:: |
|
|
650 |
read(char_type* __s, streamsize __n) |
|
|
651 |
{ |
|
|
652 |
_M_gcount = 0; |
|
|
653 |
sentry __cerb(*this, true); |
|
|
654 |
if (__cerb) |
|
|
655 |
{ |
|
|
656 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
657 |
__try |
|
|
658 |
{ |
|
|
659 |
_M_gcount = this->rdbuf()->sgetn(__s, __n); |
|
|
660 |
if (_M_gcount != __n) |
|
|
661 |
__err |= (ios_base::eofbit | ios_base::failbit); |
|
|
662 |
} |
|
|
663 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
664 |
{ |
|
|
665 |
this->_M_setstate(ios_base::badbit); |
|
|
666 |
__throw_exception_again; |
|
|
667 |
} |
|
|
668 |
__catch(...) |
|
|
669 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
670 |
if (__err) |
|
|
671 |
this->setstate(__err); |
|
|
672 |
} |
|
|
673 |
return *this; |
|
|
674 |
} |
|
|
675 |
|
|
|
676 |
template |
|
|
677 |
streamsize |
|
|
678 |
basic_istream<_CharT, _Traits>:: |
|
|
679 |
readsome(char_type* __s, streamsize __n) |
|
|
680 |
{ |
|
|
681 |
_M_gcount = 0; |
|
|
682 |
sentry __cerb(*this, true); |
|
|
683 |
if (__cerb) |
|
|
684 |
{ |
|
|
685 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
686 |
__try |
|
|
687 |
{ |
|
|
688 |
// Cannot compare int_type with streamsize generically. |
|
|
689 |
const streamsize __num = this->rdbuf()->in_avail(); |
|
|
690 |
if (__num > 0) |
|
|
691 |
_M_gcount = this->rdbuf()->sgetn(__s, std::min(__num, __n)); |
|
|
692 |
else if (__num == -1) |
|
|
693 |
__err |= ios_base::eofbit; |
|
|
694 |
} |
|
|
695 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
696 |
{ |
|
|
697 |
this->_M_setstate(ios_base::badbit); |
|
|
698 |
__throw_exception_again; |
|
|
699 |
} |
|
|
700 |
__catch(...) |
|
|
701 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
702 |
if (__err) |
|
|
703 |
this->setstate(__err); |
|
|
704 |
} |
|
|
705 |
return _M_gcount; |
|
|
706 |
} |
|
|
707 |
|
|
|
708 |
template |
|
|
709 |
basic_istream<_CharT, _Traits>& |
|
|
710 |
basic_istream<_CharT, _Traits>:: |
|
|
711 |
putback(char_type __c) |
|
|
712 |
{ |
|
|
713 |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
|
|
714 |
// 60. What is a formatted input function? |
|
|
715 |
_M_gcount = 0; |
|
|
716 |
// Clear eofbit per N3168. |
|
|
717 |
this->clear(this->rdstate() & ~ios_base::eofbit); |
|
|
718 |
sentry __cerb(*this, true); |
|
|
719 |
if (__cerb) |
|
|
720 |
{ |
|
|
721 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
722 |
__try |
|
|
723 |
{ |
|
|
724 |
const int_type __eof = traits_type::eof(); |
|
|
725 |
__streambuf_type* __sb = this->rdbuf(); |
|
|
726 |
if (!__sb |
|
|
727 |
|| traits_type::eq_int_type(__sb->sputbackc(__c), __eof)) |
|
|
728 |
__err |= ios_base::badbit; |
|
|
729 |
} |
|
|
730 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
731 |
{ |
|
|
732 |
this->_M_setstate(ios_base::badbit); |
|
|
733 |
__throw_exception_again; |
|
|
734 |
} |
|
|
735 |
__catch(...) |
|
|
736 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
737 |
if (__err) |
|
|
738 |
this->setstate(__err); |
|
|
739 |
} |
|
|
740 |
return *this; |
|
|
741 |
} |
|
|
742 |
|
|
|
743 |
template |
|
|
744 |
basic_istream<_CharT, _Traits>& |
|
|
745 |
basic_istream<_CharT, _Traits>:: |
|
|
746 |
unget(void) |
|
|
747 |
{ |
|
|
748 |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
|
|
749 |
// 60. What is a formatted input function? |
|
|
750 |
_M_gcount = 0; |
|
|
751 |
// Clear eofbit per N3168. |
|
|
752 |
this->clear(this->rdstate() & ~ios_base::eofbit); |
|
|
753 |
sentry __cerb(*this, true); |
|
|
754 |
if (__cerb) |
|
|
755 |
{ |
|
|
756 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
757 |
__try |
|
|
758 |
{ |
|
|
759 |
const int_type __eof = traits_type::eof(); |
|
|
760 |
__streambuf_type* __sb = this->rdbuf(); |
|
|
761 |
if (!__sb |
|
|
762 |
|| traits_type::eq_int_type(__sb->sungetc(), __eof)) |
|
|
763 |
__err |= ios_base::badbit; |
|
|
764 |
} |
|
|
765 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
766 |
{ |
|
|
767 |
this->_M_setstate(ios_base::badbit); |
|
|
768 |
__throw_exception_again; |
|
|
769 |
} |
|
|
770 |
__catch(...) |
|
|
771 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
772 |
if (__err) |
|
|
773 |
this->setstate(__err); |
|
|
774 |
} |
|
|
775 |
return *this; |
|
|
776 |
} |
|
|
777 |
|
|
|
778 |
template |
|
|
779 |
int |
|
|
780 |
basic_istream<_CharT, _Traits>:: |
|
|
781 |
sync(void) |
|
|
782 |
{ |
|
|
783 |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
|
|
784 |
// DR60. Do not change _M_gcount. |
|
|
785 |
int __ret = -1; |
|
|
786 |
sentry __cerb(*this, true); |
|
|
787 |
if (__cerb) |
|
|
788 |
{ |
|
|
789 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
790 |
__try |
|
|
791 |
{ |
|
|
792 |
__streambuf_type* __sb = this->rdbuf(); |
|
|
793 |
if (__sb) |
|
|
794 |
{ |
|
|
795 |
if (__sb->pubsync() == -1) |
|
|
796 |
__err |= ios_base::badbit; |
|
|
797 |
else |
|
|
798 |
__ret = 0; |
|
|
799 |
} |
|
|
800 |
} |
|
|
801 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
802 |
{ |
|
|
803 |
this->_M_setstate(ios_base::badbit); |
|
|
804 |
__throw_exception_again; |
|
|
805 |
} |
|
|
806 |
__catch(...) |
|
|
807 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
808 |
if (__err) |
|
|
809 |
this->setstate(__err); |
|
|
810 |
} |
|
|
811 |
return __ret; |
|
|
812 |
} |
|
|
813 |
|
|
|
814 |
template |
|
|
815 |
typename basic_istream<_CharT, _Traits>::pos_type |
|
|
816 |
basic_istream<_CharT, _Traits>:: |
|
|
817 |
tellg(void) |
|
|
818 |
{ |
|
|
819 |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
|
|
820 |
// DR60. Do not change _M_gcount. |
|
|
821 |
pos_type __ret = pos_type(-1); |
|
|
822 |
sentry __cerb(*this, true); |
|
|
823 |
if (__cerb) |
|
|
824 |
{ |
|
|
825 |
__try |
|
|
826 |
{ |
|
|
827 |
if (!this->fail()) |
|
|
828 |
__ret = this->rdbuf()->pubseekoff(0, ios_base::cur, |
|
|
829 |
ios_base::in); |
|
|
830 |
} |
|
|
831 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
832 |
{ |
|
|
833 |
this->_M_setstate(ios_base::badbit); |
|
|
834 |
__throw_exception_again; |
|
|
835 |
} |
|
|
836 |
__catch(...) |
|
|
837 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
838 |
} |
|
|
839 |
return __ret; |
|
|
840 |
} |
|
|
841 |
|
|
|
842 |
template |
|
|
843 |
basic_istream<_CharT, _Traits>& |
|
|
844 |
basic_istream<_CharT, _Traits>:: |
|
|
845 |
seekg(pos_type __pos) |
|
|
846 |
{ |
|
|
847 |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
|
|
848 |
// DR60. Do not change _M_gcount. |
|
|
849 |
// Clear eofbit per N3168. |
|
|
850 |
this->clear(this->rdstate() & ~ios_base::eofbit); |
|
|
851 |
sentry __cerb(*this, true); |
|
|
852 |
if (__cerb) |
|
|
853 |
{ |
|
|
854 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
855 |
__try |
|
|
856 |
{ |
|
|
857 |
if (!this->fail()) |
|
|
858 |
{ |
|
|
859 |
// 136. seekp, seekg setting wrong streams? |
|
|
860 |
const pos_type __p = this->rdbuf()->pubseekpos(__pos, |
|
|
861 |
ios_base::in); |
|
|
862 |
|
|
|
863 |
// 129. Need error indication from seekp() and seekg() |
|
|
864 |
if (__p == pos_type(off_type(-1))) |
|
|
865 |
__err |= ios_base::failbit; |
|
|
866 |
} |
|
|
867 |
} |
|
|
868 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
869 |
{ |
|
|
870 |
this->_M_setstate(ios_base::badbit); |
|
|
871 |
__throw_exception_again; |
|
|
872 |
} |
|
|
873 |
__catch(...) |
|
|
874 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
875 |
if (__err) |
|
|
876 |
this->setstate(__err); |
|
|
877 |
} |
|
|
878 |
return *this; |
|
|
879 |
} |
|
|
880 |
|
|
|
881 |
template |
|
|
882 |
basic_istream<_CharT, _Traits>& |
|
|
883 |
basic_istream<_CharT, _Traits>:: |
|
|
884 |
seekg(off_type __off, ios_base::seekdir __dir) |
|
|
885 |
{ |
|
|
886 |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
|
|
887 |
// DR60. Do not change _M_gcount. |
|
|
888 |
// Clear eofbit per N3168. |
|
|
889 |
this->clear(this->rdstate() & ~ios_base::eofbit); |
|
|
890 |
sentry __cerb(*this, true); |
|
|
891 |
if (__cerb) |
|
|
892 |
{ |
|
|
893 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
894 |
__try |
|
|
895 |
{ |
|
|
896 |
if (!this->fail()) |
|
|
897 |
{ |
|
|
898 |
// 136. seekp, seekg setting wrong streams? |
|
|
899 |
const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir, |
|
|
900 |
ios_base::in); |
|
|
901 |
|
|
|
902 |
// 129. Need error indication from seekp() and seekg() |
|
|
903 |
if (__p == pos_type(off_type(-1))) |
|
|
904 |
__err |= ios_base::failbit; |
|
|
905 |
} |
|
|
906 |
} |
|
|
907 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
908 |
{ |
|
|
909 |
this->_M_setstate(ios_base::badbit); |
|
|
910 |
__throw_exception_again; |
|
|
911 |
} |
|
|
912 |
__catch(...) |
|
|
913 |
{ this->_M_setstate(ios_base::badbit); } |
|
|
914 |
if (__err) |
|
|
915 |
this->setstate(__err); |
|
|
916 |
} |
|
|
917 |
return *this; |
|
|
918 |
} |
|
|
919 |
|
|
|
920 |
// 27.6.1.2.3 Character extraction templates |
|
|
921 |
template |
|
|
922 |
basic_istream<_CharT, _Traits>& |
|
|
923 |
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) |
|
|
924 |
{ |
|
|
925 |
typedef basic_istream<_CharT, _Traits> __istream_type; |
|
|
926 |
typedef typename __istream_type::int_type __int_type; |
|
|
927 |
|
|
|
928 |
typename __istream_type::sentry __cerb(__in, false); |
|
|
929 |
if (__cerb) |
|
|
930 |
{ |
|
|
931 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
932 |
__try |
|
|
933 |
{ |
|
|
934 |
const __int_type __cb = __in.rdbuf()->sbumpc(); |
|
|
935 |
if (!_Traits::eq_int_type(__cb, _Traits::eof())) |
|
|
936 |
__c = _Traits::to_char_type(__cb); |
|
|
937 |
else |
|
|
938 |
__err |= (ios_base::eofbit | ios_base::failbit); |
|
|
939 |
} |
|
|
940 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
941 |
{ |
|
|
942 |
__in._M_setstate(ios_base::badbit); |
|
|
943 |
__throw_exception_again; |
|
|
944 |
} |
|
|
945 |
__catch(...) |
|
|
946 |
{ __in._M_setstate(ios_base::badbit); } |
|
|
947 |
if (__err) |
|
|
948 |
__in.setstate(__err); |
|
|
949 |
} |
|
|
950 |
return __in; |
|
|
951 |
} |
|
|
952 |
|
|
|
953 |
template |
|
|
954 |
basic_istream<_CharT, _Traits>& |
|
|
955 |
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) |
|
|
956 |
{ |
|
|
957 |
typedef basic_istream<_CharT, _Traits> __istream_type; |
|
|
958 |
typedef basic_streambuf<_CharT, _Traits> __streambuf_type; |
|
|
959 |
typedef typename _Traits::int_type int_type; |
|
|
960 |
typedef _CharT char_type; |
|
|
961 |
typedef ctype<_CharT> __ctype_type; |
|
|
962 |
|
|
|
963 |
streamsize __extracted = 0; |
|
|
964 |
ios_base::iostate __err = ios_base::goodbit; |
|
|
965 |
typename __istream_type::sentry __cerb(__in, false); |
|
|
966 |
if (__cerb) |
|
|
967 |
{ |
|
|
968 |
__try |
|
|
969 |
{ |
|
|
970 |
// Figure out how many characters to extract. |
|
|
971 |
streamsize __num = __in.width(); |
|
|
972 |
if (__num <= 0) |
|
|
973 |
__num = __gnu_cxx::__numeric_traits::__max; |
|
|
974 |
|
|
|
975 |
const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc()); |
|
|
976 |
|
|
|
977 |
const int_type __eof = _Traits::eof(); |
|
|
978 |
__streambuf_type* __sb = __in.rdbuf(); |
|
|
979 |
int_type __c = __sb->sgetc(); |
|
|
980 |
|
|
|
981 |
while (__extracted < __num - 1 |
|
|
982 |
&& !_Traits::eq_int_type(__c, __eof) |
|
|
983 |
&& !__ct.is(ctype_base::space, |
|
|
984 |
_Traits::to_char_type(__c))) |
|
|
985 |
{ |
|
|
986 |
*__s++ = _Traits::to_char_type(__c); |
|
|
987 |
++__extracted; |
|
|
988 |
__c = __sb->snextc(); |
|
|
989 |
} |
|
|
990 |
if (_Traits::eq_int_type(__c, __eof)) |
|
|
991 |
__err |= ios_base::eofbit; |
|
|
992 |
|
|
|
993 |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
|
|
994 |
// 68. Extractors for char* should store null at end |
|
|
995 |
*__s = char_type(); |
|
|
996 |
__in.width(0); |
|
|
997 |
} |
|
|
998 |
__catch(__cxxabiv1::__forced_unwind&) |
|
|
999 |
{ |
|
|
1000 |
__in._M_setstate(ios_base::badbit); |
|
|
1001 |
__throw_exception_again; |
|
|
1002 |
} |
|
|
1003 |
__catch(...) |
|
|
1004 |
{ __in._M_setstate(ios_base::badbit); } |
|
|
1005 |
} |
|
|
1006 |
if (!__extracted) |
|
|
1007 |
__err |= ios_base::failbit; |
|
|
1008 |
if (__err) |
|
|
1009 |
__in.setstate(__err); |
|
|
1010 |
return __in; |
|
|
1011 |
} |
|
|
1012 |
|
|
|
1013 |
// 27.6.1.4 Standard basic_istream manipulators |
|
|
1014 |
template |
|
|
1015 |
basic_istream<_CharT, _Traits>& |
|
|
1016 |
ws(basic_istream<_CharT, _Traits>& __in) |
|
|
1017 |
{ |
|
|
1018 |
typedef basic_istream<_CharT, _Traits> __istream_type; |
|
|
1019 |
typedef basic_streambuf<_CharT, _Traits> __streambuf_type; |
|
|
1020 |
typedef typename __istream_type::int_type __int_type; |
|
|
1021 |
typedef ctype<_CharT> __ctype_type; |
|
|
1022 |
|
|
|
1023 |
const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc()); |
|
|
1024 |
const __int_type __eof = _Traits::eof(); |
|
|
1025 |
__streambuf_type* __sb = __in.rdbuf(); |
|
|
1026 |
__int_type __c = __sb->sgetc(); |
|
|
1027 |
|
|
|
1028 |
while (!_Traits::eq_int_type(__c, __eof) |
|
|
1029 |
&& __ct.is(ctype_base::space, _Traits::to_char_type(__c))) |
|
|
1030 |
__c = __sb->snextc(); |
|
|
1031 |
|
|
|
1032 |
if (_Traits::eq_int_type(__c, __eof)) |
|
|
1033 |
__in.setstate(ios_base::eofbit); |
|
|
1034 |
return __in; |
|
|
1035 |
} |
|
|
1036 |
|
|
|
1037 |
// Inhibit implicit instantiations for required instantiations, |
|
|
1038 |
// which are defined via explicit instantiations elsewhere. |
|
|
1039 |
#if _GLIBCXX_EXTERN_TEMPLATE |
|
|
1040 |
extern template class basic_istream; |
|
|
1041 |
extern template istream& ws(istream&); |
|
|
1042 |
extern template istream& operator>>(istream&, char&); |
|
|
1043 |
extern template istream& operator>>(istream&, char*); |
|
|
1044 |
extern template istream& operator>>(istream&, unsigned char&); |
|
|
1045 |
extern template istream& operator>>(istream&, signed char&); |
|
|
1046 |
extern template istream& operator>>(istream&, unsigned char*); |
|
|
1047 |
extern template istream& operator>>(istream&, signed char*); |
|
|
1048 |
|
|
|
1049 |
extern template istream& istream::_M_extract(unsigned short&); |
|
|
1050 |
extern template istream& istream::_M_extract(unsigned int&); |
|
|
1051 |
extern template istream& istream::_M_extract(long&); |
|
|
1052 |
extern template istream& istream::_M_extract(unsigned long&); |
|
|
1053 |
extern template istream& istream::_M_extract(bool&); |
|
|
1054 |
#ifdef _GLIBCXX_USE_LONG_LONG |
|
|
1055 |
extern template istream& istream::_M_extract(long long&); |
|
|
1056 |
extern template istream& istream::_M_extract(unsigned long long&); |
|
|
1057 |
#endif |
|
|
1058 |
extern template istream& istream::_M_extract(float&); |
|
|
1059 |
extern template istream& istream::_M_extract(double&); |
|
|
1060 |
extern template istream& istream::_M_extract(long double&); |
|
|
1061 |
extern template istream& istream::_M_extract(void*&); |
|
|
1062 |
|
|
|
1063 |
extern template class basic_iostream; |
|
|
1064 |
|
|
|
1065 |
#ifdef _GLIBCXX_USE_WCHAR_T |
|
|
1066 |
extern template class basic_istream; |
|
|
1067 |
extern template wistream& ws(wistream&); |
|
|
1068 |
extern template wistream& operator>>(wistream&, wchar_t&); |
|
|
1069 |
extern template wistream& operator>>(wistream&, wchar_t*); |
|
|
1070 |
|
|
|
1071 |
extern template wistream& wistream::_M_extract(unsigned short&); |
|
|
1072 |
extern template wistream& wistream::_M_extract(unsigned int&); |
|
|
1073 |
extern template wistream& wistream::_M_extract(long&); |
|
|
1074 |
extern template wistream& wistream::_M_extract(unsigned long&); |
|
|
1075 |
extern template wistream& wistream::_M_extract(bool&); |
|
|
1076 |
#ifdef _GLIBCXX_USE_LONG_LONG |
|
|
1077 |
extern template wistream& wistream::_M_extract(long long&); |
|
|
1078 |
extern template wistream& wistream::_M_extract(unsigned long long&); |
|
|
1079 |
#endif |
|
|
1080 |
extern template wistream& wistream::_M_extract(float&); |
|
|
1081 |
extern template wistream& wistream::_M_extract(double&); |
|
|
1082 |
extern template wistream& wistream::_M_extract(long double&); |
|
|
1083 |
extern template wistream& wistream::_M_extract(void*&); |
|
|
1084 |
|
|
|
1085 |
extern template class basic_iostream; |
|
|
1086 |
#endif |
|
|
1087 |
#endif |
|
|
1088 |
|
|
|
1089 |
_GLIBCXX_END_NAMESPACE_VERSION |
|
|
1090 |
} // namespace std |
|
|
1091 |
|
|
|
1092 |
#endif |