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jlechner |
// Input streams -*- C++ -*-
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// Copyright (C) 2004, 2005 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 2, 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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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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//
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// ISO C++ 14882: 27.6.1 Input streams
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//
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#include <istream>
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namespace std
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{
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template<>
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basic_istream<char>&
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basic_istream<char>::
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getline(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::iostate(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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streamsize __size = std::min(streamsize(__sb->egptr()
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- __sb->gptr()),
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streamsize(__n - _M_gcount
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- 1));
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if (__size > 1)
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{
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const char_type* __p = traits_type::find(__sb->gptr(),
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__size,
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__delim);
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if (__p)
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__size = __p - __sb->gptr();
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traits_type::copy(__s, __sb->gptr(), __size);
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__s += __size;
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__sb->gbump(__size);
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_M_gcount += __size;
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__c = __sb->sgetc();
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}
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else
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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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}
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if (traits_type::eq_int_type(__c, __eof))
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__err |= ios_base::eofbit;
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else if (traits_type::eq_int_type(__c, __idelim))
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{
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++_M_gcount;
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__sb->sbumpc();
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}
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else
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__err |= ios_base::failbit;
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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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template<>
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basic_istream<char>&
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basic_istream<char>::
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ignore(streamsize __n, int_type __delim)
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{
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if (traits_type::eq_int_type(__delim, traits_type::eof()))
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return ignore(__n);
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_M_gcount = 0;
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sentry __cerb(*this, true);
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if (__cerb && __n > 0)
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{
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ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
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try
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{
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const char_type __cdelim = traits_type::to_char_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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bool __large_ignore = false;
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while (true)
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{
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while (_M_gcount < __n
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&& !traits_type::eq_int_type(__c, __eof)
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&& !traits_type::eq_int_type(__c, __delim))
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{
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streamsize __size = std::min(streamsize(__sb->egptr()
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- __sb->gptr()),
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streamsize(__n - _M_gcount));
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if (__size > 1)
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{
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const char_type* __p = traits_type::find(__sb->gptr(),
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__size,
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__cdelim);
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if (__p)
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__size = __p - __sb->gptr();
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__sb->gbump(__size);
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_M_gcount += __size;
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__c = __sb->sgetc();
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}
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else
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{
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++_M_gcount;
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__c = __sb->snextc();
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}
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}
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if (__n == numeric_limits<streamsize>::max()
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&& !traits_type::eq_int_type(__c, __eof)
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&& !traits_type::eq_int_type(__c, __delim))
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{
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_M_gcount = numeric_limits<streamsize>::min();
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__large_ignore = true;
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}
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else
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break;
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}
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if (__large_ignore)
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_M_gcount = numeric_limits<streamsize>::max();
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if (traits_type::eq_int_type(__c, __eof))
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__err |= ios_base::eofbit;
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else if (traits_type::eq_int_type(__c, __delim))
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{
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if (_M_gcount < numeric_limits<streamsize>::max())
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++_M_gcount;
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__sb->sbumpc();
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}
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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<char>&
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operator>>(basic_istream<char>& __in, char* __s)
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{
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typedef basic_istream<char> __istream_type;
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typedef __istream_type::int_type __int_type;
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typedef __istream_type::char_type __char_type;
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typedef __istream_type::traits_type __traits_type;
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typedef __istream_type::__streambuf_type __streambuf_type;
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typedef __istream_type::__ctype_type __ctype_type;
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streamsize __extracted = 0;
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ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
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__istream_type::sentry __cerb(__in, false);
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if (__cerb)
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{
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try
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{
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// Figure out how many characters to extract.
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streamsize __num = __in.width();
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if (__num <= 0)
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__num = numeric_limits<streamsize>::max();
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const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
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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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while (__extracted < __num - 1
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&& !__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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{
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streamsize __size = std::min(streamsize(__sb->egptr()
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- __sb->gptr()),
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streamsize(__num - __extracted
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- 1));
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| 224 |
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if (__size > 1)
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{
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__size = (__ct.scan_is(ctype_base::space,
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__sb->gptr() + 1,
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__sb->gptr() + __size)
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| 229 |
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- __sb->gptr());
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__traits_type::copy(__s, __sb->gptr(), __size);
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__s += __size;
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__sb->gbump(__size);
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__extracted += __size;
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| 234 |
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__c = __sb->sgetc();
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| 235 |
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}
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| 236 |
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else
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| 237 |
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{
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| 238 |
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*__s++ = __traits_type::to_char_type(__c);
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| 239 |
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++__extracted;
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| 240 |
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__c = __sb->snextc();
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| 241 |
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}
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| 242 |
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}
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| 243 |
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| 244 |
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if (__traits_type::eq_int_type(__c, __eof))
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| 245 |
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__err |= ios_base::eofbit;
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| 246 |
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| 247 |
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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| 248 |
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// 68. Extractors for char* should store null at end
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| 249 |
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*__s = __char_type();
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| 250 |
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__in.width(0);
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| 251 |
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}
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| 252 |
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catch(...)
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| 253 |
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{ __in._M_setstate(ios_base::badbit); }
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| 254 |
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}
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| 255 |
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if (!__extracted)
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| 256 |
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__err |= ios_base::failbit;
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| 257 |
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if (__err)
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| 258 |
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__in.setstate(__err);
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| 259 |
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return __in;
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| 260 |
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}
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| 261 |
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| 262 |
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template<>
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| 263 |
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basic_istream<char>&
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| 264 |
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operator>>(basic_istream<char>& __in, basic_string<char>& __str)
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| 265 |
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{
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| 266 |
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typedef basic_istream<char> __istream_type;
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| 267 |
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typedef __istream_type::int_type __int_type;
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| 268 |
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typedef __istream_type::char_type __char_type;
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| 269 |
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typedef __istream_type::traits_type __traits_type;
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| 270 |
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typedef __istream_type::__streambuf_type __streambuf_type;
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| 271 |
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typedef __istream_type::__ctype_type __ctype_type;
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| 272 |
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typedef basic_string<char> __string_type;
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| 273 |
|
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typedef __string_type::size_type __size_type;
|
| 274 |
|
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|
| 275 |
|
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__size_type __extracted = 0;
|
| 276 |
|
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ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
|
| 277 |
|
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__istream_type::sentry __cerb(__in, false);
|
| 278 |
|
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if (__cerb)
|
| 279 |
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{
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| 280 |
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try
|
| 281 |
|
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{
|
| 282 |
|
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__str.erase();
|
| 283 |
|
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const streamsize __w = __in.width();
|
| 284 |
|
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const __size_type __n = __w > 0 ? static_cast<__size_type>(__w)
|
| 285 |
|
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: __str.max_size();
|
| 286 |
|
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const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
|
| 287 |
|
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const __int_type __eof = __traits_type::eof();
|
| 288 |
|
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__streambuf_type* __sb = __in.rdbuf();
|
| 289 |
|
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__int_type __c = __sb->sgetc();
|
| 290 |
|
|
|
| 291 |
|
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while (__extracted < __n
|
| 292 |
|
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&& !__traits_type::eq_int_type(__c, __eof)
|
| 293 |
|
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&& !__ct.is(ctype_base::space,
|
| 294 |
|
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__traits_type::to_char_type(__c)))
|
| 295 |
|
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{
|
| 296 |
|
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streamsize __size = std::min(streamsize(__sb->egptr()
|
| 297 |
|
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- __sb->gptr()),
|
| 298 |
|
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streamsize(__n - __extracted));
|
| 299 |
|
|
if (__size > 1)
|
| 300 |
|
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{
|
| 301 |
|
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__size = (__ct.scan_is(ctype_base::space,
|
| 302 |
|
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__sb->gptr() + 1,
|
| 303 |
|
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__sb->gptr() + __size)
|
| 304 |
|
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- __sb->gptr());
|
| 305 |
|
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__str.append(__sb->gptr(), __size);
|
| 306 |
|
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__sb->gbump(__size);
|
| 307 |
|
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__extracted += __size;
|
| 308 |
|
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__c = __sb->sgetc();
|
| 309 |
|
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}
|
| 310 |
|
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else
|
| 311 |
|
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{
|
| 312 |
|
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__str += __traits_type::to_char_type(__c);
|
| 313 |
|
|
++__extracted;
|
| 314 |
|
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__c = __sb->snextc();
|
| 315 |
|
|
}
|
| 316 |
|
|
}
|
| 317 |
|
|
|
| 318 |
|
|
if (__traits_type::eq_int_type(__c, __eof))
|
| 319 |
|
|
__err |= ios_base::eofbit;
|
| 320 |
|
|
__in.width(0);
|
| 321 |
|
|
}
|
| 322 |
|
|
catch(...)
|
| 323 |
|
|
{
|
| 324 |
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
| 325 |
|
|
// 91. Description of operator>> and getline() for string<>
|
| 326 |
|
|
// might cause endless loop
|
| 327 |
|
|
__in._M_setstate(ios_base::badbit);
|
| 328 |
|
|
}
|
| 329 |
|
|
}
|
| 330 |
|
|
if (!__extracted)
|
| 331 |
|
|
__err |= ios_base::failbit;
|
| 332 |
|
|
if (__err)
|
| 333 |
|
|
__in.setstate(__err);
|
| 334 |
|
|
return __in;
|
| 335 |
|
|
}
|
| 336 |
|
|
|
| 337 |
|
|
template<>
|
| 338 |
|
|
basic_istream<char>&
|
| 339 |
|
|
getline(basic_istream<char>& __in, basic_string<char>& __str,
|
| 340 |
|
|
char __delim)
|
| 341 |
|
|
{
|
| 342 |
|
|
typedef basic_istream<char> __istream_type;
|
| 343 |
|
|
typedef __istream_type::int_type __int_type;
|
| 344 |
|
|
typedef __istream_type::char_type __char_type;
|
| 345 |
|
|
typedef __istream_type::traits_type __traits_type;
|
| 346 |
|
|
typedef __istream_type::__streambuf_type __streambuf_type;
|
| 347 |
|
|
typedef __istream_type::__ctype_type __ctype_type;
|
| 348 |
|
|
typedef basic_string<char> __string_type;
|
| 349 |
|
|
typedef __string_type::size_type __size_type;
|
| 350 |
|
|
|
| 351 |
|
|
__size_type __extracted = 0;
|
| 352 |
|
|
const __size_type __n = __str.max_size();
|
| 353 |
|
|
ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
|
| 354 |
|
|
__istream_type::sentry __cerb(__in, true);
|
| 355 |
|
|
if (__cerb)
|
| 356 |
|
|
{
|
| 357 |
|
|
try
|
| 358 |
|
|
{
|
| 359 |
|
|
__str.erase();
|
| 360 |
|
|
const __int_type __idelim = __traits_type::to_int_type(__delim);
|
| 361 |
|
|
const __int_type __eof = __traits_type::eof();
|
| 362 |
|
|
__streambuf_type* __sb = __in.rdbuf();
|
| 363 |
|
|
__int_type __c = __sb->sgetc();
|
| 364 |
|
|
|
| 365 |
|
|
while (__extracted < __n
|
| 366 |
|
|
&& !__traits_type::eq_int_type(__c, __eof)
|
| 367 |
|
|
&& !__traits_type::eq_int_type(__c, __idelim))
|
| 368 |
|
|
{
|
| 369 |
|
|
streamsize __size = std::min(streamsize(__sb->egptr()
|
| 370 |
|
|
- __sb->gptr()),
|
| 371 |
|
|
streamsize(__n - __extracted));
|
| 372 |
|
|
if (__size > 1)
|
| 373 |
|
|
{
|
| 374 |
|
|
const __char_type* __p = __traits_type::find(__sb->gptr(),
|
| 375 |
|
|
__size,
|
| 376 |
|
|
__delim);
|
| 377 |
|
|
if (__p)
|
| 378 |
|
|
__size = __p - __sb->gptr();
|
| 379 |
|
|
__str.append(__sb->gptr(), __size);
|
| 380 |
|
|
__sb->gbump(__size);
|
| 381 |
|
|
__extracted += __size;
|
| 382 |
|
|
__c = __sb->sgetc();
|
| 383 |
|
|
}
|
| 384 |
|
|
else
|
| 385 |
|
|
{
|
| 386 |
|
|
__str += __traits_type::to_char_type(__c);
|
| 387 |
|
|
++__extracted;
|
| 388 |
|
|
__c = __sb->snextc();
|
| 389 |
|
|
}
|
| 390 |
|
|
}
|
| 391 |
|
|
|
| 392 |
|
|
if (__traits_type::eq_int_type(__c, __eof))
|
| 393 |
|
|
__err |= ios_base::eofbit;
|
| 394 |
|
|
else if (__traits_type::eq_int_type(__c, __idelim))
|
| 395 |
|
|
{
|
| 396 |
|
|
++__extracted;
|
| 397 |
|
|
__sb->sbumpc();
|
| 398 |
|
|
}
|
| 399 |
|
|
else
|
| 400 |
|
|
__err |= ios_base::failbit;
|
| 401 |
|
|
}
|
| 402 |
|
|
catch(...)
|
| 403 |
|
|
{
|
| 404 |
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
| 405 |
|
|
// 91. Description of operator>> and getline() for string<>
|
| 406 |
|
|
// might cause endless loop
|
| 407 |
|
|
__in._M_setstate(ios_base::badbit);
|
| 408 |
|
|
}
|
| 409 |
|
|
}
|
| 410 |
|
|
if (!__extracted)
|
| 411 |
|
|
__err |= ios_base::failbit;
|
| 412 |
|
|
if (__err)
|
| 413 |
|
|
__in.setstate(__err);
|
| 414 |
|
|
return __in;
|
| 415 |
|
|
}
|
| 416 |
|
|
|
| 417 |
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
| 418 |
|
|
template<>
|
| 419 |
|
|
basic_istream<wchar_t>&
|
| 420 |
|
|
basic_istream<wchar_t>::
|
| 421 |
|
|
getline(char_type* __s, streamsize __n, char_type __delim)
|
| 422 |
|
|
{
|
| 423 |
|
|
_M_gcount = 0;
|
| 424 |
|
|
ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
|
| 425 |
|
|
sentry __cerb(*this, true);
|
| 426 |
|
|
if (__cerb)
|
| 427 |
|
|
{
|
| 428 |
|
|
try
|
| 429 |
|
|
{
|
| 430 |
|
|
const int_type __idelim = traits_type::to_int_type(__delim);
|
| 431 |
|
|
const int_type __eof = traits_type::eof();
|
| 432 |
|
|
__streambuf_type* __sb = this->rdbuf();
|
| 433 |
|
|
int_type __c = __sb->sgetc();
|
| 434 |
|
|
|
| 435 |
|
|
while (_M_gcount + 1 < __n
|
| 436 |
|
|
&& !traits_type::eq_int_type(__c, __eof)
|
| 437 |
|
|
&& !traits_type::eq_int_type(__c, __idelim))
|
| 438 |
|
|
{
|
| 439 |
|
|
streamsize __size = std::min(streamsize(__sb->egptr()
|
| 440 |
|
|
- __sb->gptr()),
|
| 441 |
|
|
streamsize(__n - _M_gcount
|
| 442 |
|
|
- 1));
|
| 443 |
|
|
if (__size > 1)
|
| 444 |
|
|
{
|
| 445 |
|
|
const char_type* __p = traits_type::find(__sb->gptr(),
|
| 446 |
|
|
__size,
|
| 447 |
|
|
__delim);
|
| 448 |
|
|
if (__p)
|
| 449 |
|
|
__size = __p - __sb->gptr();
|
| 450 |
|
|
traits_type::copy(__s, __sb->gptr(), __size);
|
| 451 |
|
|
__s += __size;
|
| 452 |
|
|
__sb->gbump(__size);
|
| 453 |
|
|
_M_gcount += __size;
|
| 454 |
|
|
__c = __sb->sgetc();
|
| 455 |
|
|
}
|
| 456 |
|
|
else
|
| 457 |
|
|
{
|
| 458 |
|
|
*__s++ = traits_type::to_char_type(__c);
|
| 459 |
|
|
++_M_gcount;
|
| 460 |
|
|
__c = __sb->snextc();
|
| 461 |
|
|
}
|
| 462 |
|
|
}
|
| 463 |
|
|
|
| 464 |
|
|
if (traits_type::eq_int_type(__c, __eof))
|
| 465 |
|
|
__err |= ios_base::eofbit;
|
| 466 |
|
|
else if (traits_type::eq_int_type(__c, __idelim))
|
| 467 |
|
|
{
|
| 468 |
|
|
++_M_gcount;
|
| 469 |
|
|
__sb->sbumpc();
|
| 470 |
|
|
}
|
| 471 |
|
|
else
|
| 472 |
|
|
__err |= ios_base::failbit;
|
| 473 |
|
|
}
|
| 474 |
|
|
catch(...)
|
| 475 |
|
|
{ this->_M_setstate(ios_base::badbit); }
|
| 476 |
|
|
}
|
| 477 |
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
| 478 |
|
|
// 243. get and getline when sentry reports failure.
|
| 479 |
|
|
if (__n > 0)
|
| 480 |
|
|
*__s = char_type();
|
| 481 |
|
|
if (!_M_gcount)
|
| 482 |
|
|
__err |= ios_base::failbit;
|
| 483 |
|
|
if (__err)
|
| 484 |
|
|
this->setstate(__err);
|
| 485 |
|
|
return *this;
|
| 486 |
|
|
}
|
| 487 |
|
|
|
| 488 |
|
|
template<>
|
| 489 |
|
|
basic_istream<wchar_t>&
|
| 490 |
|
|
basic_istream<wchar_t>::
|
| 491 |
|
|
ignore(streamsize __n, int_type __delim)
|
| 492 |
|
|
{
|
| 493 |
|
|
if (traits_type::eq_int_type(__delim, traits_type::eof()))
|
| 494 |
|
|
return ignore(__n);
|
| 495 |
|
|
|
| 496 |
|
|
_M_gcount = 0;
|
| 497 |
|
|
sentry __cerb(*this, true);
|
| 498 |
|
|
if (__cerb && __n > 0)
|
| 499 |
|
|
{
|
| 500 |
|
|
ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
|
| 501 |
|
|
try
|
| 502 |
|
|
{
|
| 503 |
|
|
const char_type __cdelim = traits_type::to_char_type(__delim);
|
| 504 |
|
|
const int_type __eof = traits_type::eof();
|
| 505 |
|
|
__streambuf_type* __sb = this->rdbuf();
|
| 506 |
|
|
int_type __c = __sb->sgetc();
|
| 507 |
|
|
|
| 508 |
|
|
bool __large_ignore = false;
|
| 509 |
|
|
while (true)
|
| 510 |
|
|
{
|
| 511 |
|
|
while (_M_gcount < __n
|
| 512 |
|
|
&& !traits_type::eq_int_type(__c, __eof)
|
| 513 |
|
|
&& !traits_type::eq_int_type(__c, __delim))
|
| 514 |
|
|
{
|
| 515 |
|
|
streamsize __size = std::min(streamsize(__sb->egptr()
|
| 516 |
|
|
- __sb->gptr()),
|
| 517 |
|
|
streamsize(__n - _M_gcount));
|
| 518 |
|
|
if (__size > 1)
|
| 519 |
|
|
{
|
| 520 |
|
|
const char_type* __p = traits_type::find(__sb->gptr(),
|
| 521 |
|
|
__size,
|
| 522 |
|
|
__cdelim);
|
| 523 |
|
|
if (__p)
|
| 524 |
|
|
__size = __p - __sb->gptr();
|
| 525 |
|
|
__sb->gbump(__size);
|
| 526 |
|
|
_M_gcount += __size;
|
| 527 |
|
|
__c = __sb->sgetc();
|
| 528 |
|
|
}
|
| 529 |
|
|
else
|
| 530 |
|
|
{
|
| 531 |
|
|
++_M_gcount;
|
| 532 |
|
|
__c = __sb->snextc();
|
| 533 |
|
|
}
|
| 534 |
|
|
}
|
| 535 |
|
|
if (__n == numeric_limits<streamsize>::max()
|
| 536 |
|
|
&& !traits_type::eq_int_type(__c, __eof)
|
| 537 |
|
|
&& !traits_type::eq_int_type(__c, __delim))
|
| 538 |
|
|
{
|
| 539 |
|
|
_M_gcount = numeric_limits<streamsize>::min();
|
| 540 |
|
|
__large_ignore = true;
|
| 541 |
|
|
}
|
| 542 |
|
|
else
|
| 543 |
|
|
break;
|
| 544 |
|
|
}
|
| 545 |
|
|
|
| 546 |
|
|
if (__large_ignore)
|
| 547 |
|
|
_M_gcount = numeric_limits<streamsize>::max();
|
| 548 |
|
|
|
| 549 |
|
|
if (traits_type::eq_int_type(__c, __eof))
|
| 550 |
|
|
__err |= ios_base::eofbit;
|
| 551 |
|
|
else if (traits_type::eq_int_type(__c, __delim))
|
| 552 |
|
|
{
|
| 553 |
|
|
if (_M_gcount < numeric_limits<streamsize>::max())
|
| 554 |
|
|
++_M_gcount;
|
| 555 |
|
|
__sb->sbumpc();
|
| 556 |
|
|
}
|
| 557 |
|
|
}
|
| 558 |
|
|
catch(...)
|
| 559 |
|
|
{ this->_M_setstate(ios_base::badbit); }
|
| 560 |
|
|
if (__err)
|
| 561 |
|
|
this->setstate(__err);
|
| 562 |
|
|
}
|
| 563 |
|
|
return *this;
|
| 564 |
|
|
}
|
| 565 |
|
|
|
| 566 |
|
|
template<>
|
| 567 |
|
|
basic_istream<wchar_t>&
|
| 568 |
|
|
getline(basic_istream<wchar_t>& __in, basic_string<wchar_t>& __str,
|
| 569 |
|
|
wchar_t __delim)
|
| 570 |
|
|
{
|
| 571 |
|
|
typedef basic_istream<wchar_t> __istream_type;
|
| 572 |
|
|
typedef __istream_type::int_type __int_type;
|
| 573 |
|
|
typedef __istream_type::char_type __char_type;
|
| 574 |
|
|
typedef __istream_type::traits_type __traits_type;
|
| 575 |
|
|
typedef __istream_type::__streambuf_type __streambuf_type;
|
| 576 |
|
|
typedef __istream_type::__ctype_type __ctype_type;
|
| 577 |
|
|
typedef basic_string<wchar_t> __string_type;
|
| 578 |
|
|
typedef __string_type::size_type __size_type;
|
| 579 |
|
|
|
| 580 |
|
|
__size_type __extracted = 0;
|
| 581 |
|
|
const __size_type __n = __str.max_size();
|
| 582 |
|
|
ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
|
| 583 |
|
|
__istream_type::sentry __cerb(__in, true);
|
| 584 |
|
|
if (__cerb)
|
| 585 |
|
|
{
|
| 586 |
|
|
try
|
| 587 |
|
|
{
|
| 588 |
|
|
__str.erase();
|
| 589 |
|
|
const __int_type __idelim = __traits_type::to_int_type(__delim);
|
| 590 |
|
|
const __int_type __eof = __traits_type::eof();
|
| 591 |
|
|
__streambuf_type* __sb = __in.rdbuf();
|
| 592 |
|
|
__int_type __c = __sb->sgetc();
|
| 593 |
|
|
|
| 594 |
|
|
while (__extracted < __n
|
| 595 |
|
|
&& !__traits_type::eq_int_type(__c, __eof)
|
| 596 |
|
|
&& !__traits_type::eq_int_type(__c, __idelim))
|
| 597 |
|
|
{
|
| 598 |
|
|
streamsize __size = std::min(streamsize(__sb->egptr()
|
| 599 |
|
|
- __sb->gptr()),
|
| 600 |
|
|
streamsize(__n - __extracted));
|
| 601 |
|
|
if (__size > 1)
|
| 602 |
|
|
{
|
| 603 |
|
|
const __char_type* __p = __traits_type::find(__sb->gptr(),
|
| 604 |
|
|
__size,
|
| 605 |
|
|
__delim);
|
| 606 |
|
|
if (__p)
|
| 607 |
|
|
__size = __p - __sb->gptr();
|
| 608 |
|
|
__str.append(__sb->gptr(), __size);
|
| 609 |
|
|
__sb->gbump(__size);
|
| 610 |
|
|
__extracted += __size;
|
| 611 |
|
|
__c = __sb->sgetc();
|
| 612 |
|
|
}
|
| 613 |
|
|
else
|
| 614 |
|
|
{
|
| 615 |
|
|
__str += __traits_type::to_char_type(__c);
|
| 616 |
|
|
++__extracted;
|
| 617 |
|
|
__c = __sb->snextc();
|
| 618 |
|
|
}
|
| 619 |
|
|
}
|
| 620 |
|
|
|
| 621 |
|
|
if (__traits_type::eq_int_type(__c, __eof))
|
| 622 |
|
|
__err |= ios_base::eofbit;
|
| 623 |
|
|
else if (__traits_type::eq_int_type(__c, __idelim))
|
| 624 |
|
|
{
|
| 625 |
|
|
++__extracted;
|
| 626 |
|
|
__sb->sbumpc();
|
| 627 |
|
|
}
|
| 628 |
|
|
else
|
| 629 |
|
|
__err |= ios_base::failbit;
|
| 630 |
|
|
}
|
| 631 |
|
|
catch(...)
|
| 632 |
|
|
{
|
| 633 |
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
| 634 |
|
|
// 91. Description of operator>> and getline() for string<>
|
| 635 |
|
|
// might cause endless loop
|
| 636 |
|
|
__in._M_setstate(ios_base::badbit);
|
| 637 |
|
|
}
|
| 638 |
|
|
}
|
| 639 |
|
|
if (!__extracted)
|
| 640 |
|
|
__err |= ios_base::failbit;
|
| 641 |
|
|
if (__err)
|
| 642 |
|
|
__in.setstate(__err);
|
| 643 |
|
|
return __in;
|
| 644 |
|
|
}
|
| 645 |
|
|
#endif
|
| 646 |
|
|
} // namespace std
|
