| 0,0 → 1,1239 |
|---|
| // Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 2, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING. If not, write to the Free |
| // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| // USA. |
| |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| |
| // |
| // ISO C++ 14882: 27.6.2 Output streams |
| // |
| |
| #include <bits/std_locale.h> |
| #include <bits/std_ostream.h> // for flush() |
| |
| namespace std |
| { |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>::sentry:: |
| sentry(basic_istream<_CharT, _Traits>& __in, bool __noskipws) |
| { |
| if (__in.good()) |
| { |
| if (__in.tie()) |
| __in.tie()->flush(); |
| if (!__noskipws && (__in.flags() & ios_base::skipws)) |
| { |
| const __int_type __eof = traits_type::eof(); |
| const __ctype_type* __ctype = __in._M_get_fctype_ios(); |
| __streambuf_type* __sb = __in.rdbuf(); |
| __int_type __c = __sb->sgetc(); |
| |
| while (__c != __eof && __ctype->is(ctype_base::space, __c)) |
| __c = __sb->snextc(); |
| |
| #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
| //195. Should basic_istream::sentry's constructor ever set eofbit? |
| if (__c == __eof) |
| __in.setstate(ios_base::eofbit); |
| #endif |
| } |
| } |
| |
| if (__in.good()) |
| _M_ok = true; |
| else |
| { |
| _M_ok = false; |
| __in.setstate(ios_base::failbit); |
| } |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(__istream_type& (*__pf)(__istream_type&)) |
| { |
| __pf(*this); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(__ios_type& (*__pf)(__ios_type&)) |
| { |
| __pf(*this); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(ios_base& (*__pf)(ios_base&)) |
| { |
| __pf(*this); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(bool& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(short& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(unsigned short& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(int& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(unsigned int& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(long& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(unsigned long& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| #ifdef _GLIBCPP_USE_LONG_LONG |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(long long& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(unsigned long long& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| #endif |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(float& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(double& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(long double& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(void*& __n) |
| { |
| sentry __cerb(*this, false); |
| if (__cerb) |
| { |
| try |
| { |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| if (_M_check_facet(_M_fnumget)) |
| _M_fnumget->get(*this, 0, *this, __err, __n); |
| this->setstate(__err); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| operator>>(__streambuf_type* __sbout) |
| { |
| streamsize __xtrct = 0; |
| __streambuf_type* __sbin = this->rdbuf(); |
| sentry __cerb(*this, false); |
| if (__sbout && __cerb) |
| __xtrct = __copy_streambufs(*this, __sbin, __sbout); |
| if (!__sbout || !__xtrct) |
| this->setstate(ios_base::failbit); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>::int_type |
| basic_istream<_CharT, _Traits>:: |
| get(void) |
| { |
| const int_type __eof = traits_type::eof(); |
| int_type __c = __eof; |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { |
| __c = this->rdbuf()->sbumpc(); |
| // 27.6.1.1 paragraph 3 |
| if (__c != __eof) |
| _M_gcount = 1; |
| else |
| this->setstate(ios_base::eofbit | ios_base::failbit); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return __c; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| get(char_type& __c) |
| { |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { |
| const int_type __eof = traits_type::eof(); |
| int_type __bufval = this->rdbuf()->sbumpc(); |
| // 27.6.1.1 paragraph 3 |
| if (__bufval != __eof) |
| { |
| _M_gcount = 1; |
| __c = traits_type::to_char_type(__bufval); |
| } |
| else |
| this->setstate(ios_base::eofbit | ios_base::failbit); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| get(char_type* __s, streamsize __n, char_type __delim) |
| { |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb && __n > 1) |
| { |
| try |
| { |
| const int_type __idelim = traits_type::to_int_type(__delim); |
| const int_type __eof = traits_type::eof(); |
| __streambuf_type* __sb = this->rdbuf(); |
| int_type __c = __sb->sbumpc(); |
| bool __testdelim = __c == __idelim; |
| bool __testeof = __c == __eof; |
| |
| while (_M_gcount < __n - 1 && !__testeof && !__testdelim) |
| { |
| *__s++ = traits_type::to_char_type(__c); |
| ++_M_gcount; |
| __c = __sb->sbumpc(); |
| __testeof = __c == __eof; |
| __testdelim = __c == __idelim; |
| } |
| if (__testdelim || _M_gcount == __n - 1) |
| __sb->sputbackc(__c); |
| if (__testeof) |
| this->setstate(ios_base::eofbit); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| *__s = char_type(); |
| if (!_M_gcount) |
| this->setstate(ios_base::failbit); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| get(__streambuf_type& __sb, char_type __delim) |
| { |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| int_type __c; |
| __streambuf_type* __this_sb = this->rdbuf(); |
| try |
| { |
| const int_type __idelim = traits_type::to_int_type(__delim); |
| const int_type __eof = traits_type::eof(); |
| __c = __this_sb->sbumpc(); |
| bool __testdelim = __c == __idelim; |
| bool __testeof = __c == __eof; |
| bool __testput = true; |
| |
| while (!__testeof && !__testdelim |
| && (__testput = __sb.sputc(traits_type::to_char_type(__c)) |
| != __eof)) |
| { |
| ++_M_gcount; |
| __c = __this_sb->sbumpc(); |
| __testeof = __c == __eof; |
| __testdelim = __c == __idelim; |
| } |
| if (__testdelim || !__testput) |
| __this_sb->sputbackc(traits_type::to_char_type(__c)); |
| if (__testeof) |
| this->setstate(ios_base::eofbit); |
| } |
| catch(exception& __fail) |
| { |
| // Exception may result from sputc->overflow. |
| __this_sb->sputbackc(traits_type::to_char_type(__c)); |
| } |
| } |
| if (!_M_gcount) |
| this->setstate(ios_base::failbit); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| getline(char_type* __s, streamsize __n, char_type __delim) |
| { |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { |
| __streambuf_type* __sb = this->rdbuf(); |
| int_type __c = __sb->sbumpc(); |
| ++_M_gcount; |
| const int_type __idelim = traits_type::to_int_type(__delim); |
| const int_type __eof = traits_type::eof(); |
| bool __testdelim = __c == __idelim; |
| bool __testeof = __c == __eof; |
| |
| while (_M_gcount < __n && !__testeof && !__testdelim) |
| { |
| *__s++ = traits_type::to_char_type(__c); |
| __c = __sb->sbumpc(); |
| ++_M_gcount; |
| __testeof = __c == __eof; |
| __testdelim = __c == __idelim; |
| } |
| |
| if (__testeof) |
| { |
| --_M_gcount; |
| this->setstate(ios_base::eofbit); |
| } |
| else if (!__testdelim) |
| { |
| --_M_gcount; |
| __sb->sputbackc(traits_type::to_char_type(__c)); |
| this->setstate(ios_base::failbit); |
| } |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| *__s = char_type(); |
| if (!_M_gcount) |
| this->setstate(ios_base::failbit); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| ignore(streamsize __n, int_type __delim) |
| { |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb && __n > 0) |
| { |
| try |
| { |
| const int_type __idelim = traits_type::to_int_type(__delim); |
| const int_type __eof = traits_type::eof(); |
| __streambuf_type* __sb = this->rdbuf(); |
| int_type __c = __sb->sbumpc(); |
| bool __testdelim = __c == __idelim; |
| bool __testeof = __c == __eof; |
| |
| __n = min(__n, numeric_limits<streamsize>::max()); |
| while (_M_gcount < __n - 1 && !__testeof && !__testdelim) |
| { |
| ++_M_gcount; |
| __c = __sb->sbumpc(); |
| __testeof = __c == __eof; |
| __testdelim = __c == __idelim; |
| } |
| if ((_M_gcount == __n - 1 && !__testeof) || __testdelim) |
| ++_M_gcount; |
| if (__testeof) |
| this->setstate(ios_base::eofbit); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>::int_type |
| basic_istream<_CharT, _Traits>:: |
| peek(void) |
| { |
| int_type __c = traits_type::eof(); |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { __c = this->rdbuf()->sgetc(); } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return __c; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| read(char_type* __s, streamsize __n) |
| { |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| if (__n > 0) |
| { |
| try |
| { |
| const int_type __eof = traits_type::eof(); |
| __streambuf_type* __sb = this->rdbuf(); |
| int_type __c = __sb->sbumpc(); |
| bool __testeof = __c == __eof; |
| |
| while (_M_gcount < __n - 1 && !__testeof) |
| { |
| *__s++ = traits_type::to_char_type(__c); |
| ++_M_gcount; |
| __c = __sb->sbumpc(); |
| __testeof = __c == __eof; |
| } |
| if (__testeof) |
| this->setstate(ios_base::eofbit | ios_base::failbit); |
| else |
| { |
| // _M_gcount == __n - 1 |
| *__s++ = traits_type::to_char_type(__c); |
| ++_M_gcount; |
| } |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| } |
| else |
| this->setstate(ios_base::failbit); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| streamsize |
| basic_istream<_CharT, _Traits>:: |
| readsome(char_type* __s, streamsize __n) |
| { |
| const int_type __eof = traits_type::eof(); |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| if (__n > 0) |
| { |
| try |
| { |
| streamsize __num = this->rdbuf()->in_avail(); |
| if (__num != static_cast<streamsize>(__eof)) |
| { |
| __num = min(__num, __n); |
| _M_gcount = this->rdbuf()->sgetn(__s, __num); |
| } |
| else |
| this->setstate(ios_base::eofbit); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| } |
| else |
| this->setstate(ios_base::failbit); |
| return _M_gcount; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| putback(char_type __c) |
| { |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { |
| const int_type __eof = traits_type::eof(); |
| __streambuf_type* __sb = this->rdbuf(); |
| if (!__sb || __sb->sputbackc(__c) == __eof) |
| this->setstate(ios_base::badbit); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| else |
| this->setstate(ios_base::failbit); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| unget(void) |
| { |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { |
| const int_type __eof = traits_type::eof(); |
| __streambuf_type* __sb = this->rdbuf(); |
| if (!__sb || __eof == __sb->sungetc()) |
| this->setstate(ios_base::badbit); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| else |
| this->setstate(ios_base::failbit); |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| int |
| basic_istream<_CharT, _Traits>:: |
| sync(void) |
| { |
| int __ret = traits_type::eof(); |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { |
| __streambuf_type* __sb = this->rdbuf(); |
| if (!__sb || __ret == __sb->pubsync()) |
| this->setstate(ios_base::badbit); |
| else |
| __ret = 0; |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return __ret; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| typename basic_istream<_CharT, _Traits>::pos_type |
| basic_istream<_CharT, _Traits>:: |
| tellg(void) |
| { |
| pos_type __ret = pos_type(-1); |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { |
| __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::in); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return __ret; |
| } |
| |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| seekg(pos_type __pos) |
| { |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { |
| #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
| // 136. seekp, seekg setting wrong streams? |
| pos_type __err = this->rdbuf()->pubseekpos(__pos, ios_base::in); |
| |
| // 129. Need error indication from seekp() and seekg() |
| if (__err == pos_type(off_type(-1))) |
| this->setstate(failbit); |
| #endif |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| basic_istream<_CharT, _Traits>:: |
| seekg(off_type __off, ios_base::seekdir __dir) |
| { |
| _M_gcount = 0; |
| sentry __cerb(*this, true); |
| if (__cerb) |
| { |
| try |
| { |
| #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
| // 136. seekp, seekg setting wrong streams? |
| pos_type __err = this->rdbuf()->pubseekoff(__off, __dir, |
| ios_base::in); |
| |
| // 129. Need error indication from seekp() and seekg() |
| if (__err == pos_type(off_type(-1))) |
| this->setstate(failbit); |
| #endif |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.3 paragraph 1 |
| // Turn this on without causing an ios::failure to be thrown. |
| this->setstate(ios_base::badbit); |
| if ((this->exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| return *this; |
| } |
| |
| // 27.6.1.2.3 Character extraction templates |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) |
| { |
| typedef basic_istream<_CharT, _Traits> __istream_type; |
| typename __istream_type::sentry __cerb(__in, false); |
| if (__cerb) |
| { |
| try |
| { __in.get(__c); } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| __in.setstate(ios_base::badbit); |
| if ((__in.exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| else |
| __in.setstate(ios_base::failbit); |
| return __in; |
| } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) |
| { |
| typedef basic_istream<_CharT, _Traits> __istream_type; |
| typedef typename __istream_type::__streambuf_type __streambuf_type; |
| typedef typename _Traits::int_type int_type; |
| typedef _CharT char_type; |
| typedef ctype<_CharT> __ctype_type; |
| streamsize __extracted = 0; |
| |
| typename __istream_type::sentry __cerb(__in, false); |
| if (__cerb) |
| { |
| try |
| { |
| // Figure out how many characters to extract. |
| streamsize __num = __in.width(); |
| if (__num == 0) |
| __num = numeric_limits<streamsize>::max(); |
| |
| __streambuf_type* __sb = __in.rdbuf(); |
| const __ctype_type* __ctype = __in._M_get_fctype_ios(); |
| int_type __c = __sb->sbumpc(); |
| const int_type __eof = _Traits::eof(); |
| bool __testsp = __ctype->is(ctype_base::space, __c); |
| bool __testeof = __c == __eof; |
| |
| while (__extracted < __num - 1 && !__testeof && !__testsp) |
| { |
| *__s++ = __c; |
| ++__extracted; |
| __c = __sb->sbumpc(); |
| __testeof = __c == __eof; |
| __testsp = __ctype->is(ctype_base::space, __c); |
| } |
| |
| if (!__testeof) |
| __sb->sputbackc(__c); |
| else |
| __in.setstate(ios_base::eofbit); |
| |
| #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
| //68. Extractors for char* should store null at end |
| *__s = char_type(); |
| #endif |
| __in.width(0); |
| } |
| catch(exception& __fail) |
| { |
| // 27.6.1.2.1 Common requirements. |
| // Turn this on without causing an ios::failure to be thrown. |
| __in.setstate(ios_base::badbit); |
| if ((__in.exceptions() & ios_base::badbit) != 0) |
| __throw_exception_again; |
| } |
| } |
| if (!__extracted) |
| __in.setstate(ios_base::failbit); |
| return __in; |
| } |
| |
| // 27.6.1.4 Standard basic_istream manipulators |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT,_Traits>& |
| ws(basic_istream<_CharT,_Traits>& __in) |
| { |
| typedef basic_istream<_CharT, _Traits> __istream_type; |
| typedef typename __istream_type::__streambuf_type __streambuf_type; |
| typedef typename __istream_type::__ctype_type __ctype_type; |
| typedef typename __istream_type::int_type __int_type; |
| typedef typename __istream_type::char_type __char_type; |
| |
| __streambuf_type* __sb = __in.rdbuf(); |
| const __ctype_type* __ctype = __in._M_get_fctype_ios(); |
| const __int_type __eof = _Traits::eof(); |
| __int_type __c; |
| bool __testeof; |
| bool __testsp; |
| |
| do |
| { |
| __c = __sb->sbumpc(); |
| __testeof = __c == __eof; |
| __testsp = __ctype->is(ctype_base::space, __c); |
| } |
| while (!__testeof && __testsp); |
| |
| if (!__testeof && !__testsp) |
| __sb->sputbackc(__c); |
| else |
| __in.setstate(ios_base::eofbit); |
| |
| return __in; |
| } |
| |
| // 21.3.7.9 basic_string::getline and operators |
| template<typename _CharT, typename _Traits, typename _Alloc> |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __in, |
| basic_string<_CharT, _Traits, _Alloc>& __str) |
| { |
| typedef basic_istream<_CharT, _Traits> __istream_type; |
| typedef typename __istream_type::int_type __int_type; |
| typedef typename __istream_type::__streambuf_type __streambuf_type; |
| typedef typename __istream_type::__ctype_type __ctype_type; |
| typedef basic_string<_CharT, _Traits, _Alloc> __string_type; |
| typedef typename __string_type::size_type __size_type; |
| __size_type __extracted = 0; |
| |
| typename __istream_type::sentry __cerb(__in, false); |
| if (__cerb) |
| { |
| __str.erase(); |
| streamsize __w = __in.width(); |
| __size_type __n; |
| __n = __w > 0 ? static_cast<__size_type>(__w) : __str.max_size(); |
| |
| __streambuf_type* __sb = __in.rdbuf(); |
| const __ctype_type* __ctype = __in._M_get_fctype_ios(); |
| __int_type __c = __sb->sbumpc(); |
| const __int_type __eof = _Traits::eof(); |
| bool __testsp = __ctype->is(ctype_base::space, __c); |
| bool __testeof = __c == __eof; |
| |
| while (__extracted < __n && !__testeof && !__testsp) |
| { |
| __str += _Traits::to_char_type(__c); |
| ++__extracted; |
| __c = __sb->sbumpc(); |
| __testeof = __c == __eof; |
| __testsp = __ctype->is(ctype_base::space, __c); |
| } |
| if (!__testeof) |
| __sb->sputbackc(__c); |
| else |
| __in.setstate(ios_base::eofbit); |
| __in.width(0); |
| } |
| #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
| // 2000-02-01 Number to be determined |
| if (!__extracted) |
| __in.setstate (ios_base::failbit); |
| #endif |
| return __in; |
| } |
| |
| template<typename _CharT, typename _Traits, typename _Alloc> |
| basic_istream<_CharT, _Traits>& |
| getline(basic_istream<_CharT, _Traits>& __in, |
| basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim) |
| { |
| typedef basic_istream<_CharT, _Traits> __istream_type; |
| typedef typename __istream_type::int_type __int_type; |
| typedef typename __istream_type::__streambuf_type __streambuf_type; |
| typedef typename __istream_type::__ctype_type __ctype_type; |
| typedef basic_string<_CharT, _Traits, _Alloc> __string_type; |
| typedef typename __string_type::size_type __size_type; |
| |
| __size_type __extracted = 0; |
| bool __testdelim = false; |
| typename __istream_type::sentry __cerb(__in, true); |
| if (__cerb) |
| { |
| __str.erase(); |
| __size_type __n = __str.max_size(); |
| |
| __int_type __idelim = _Traits::to_int_type(__delim); |
| __streambuf_type* __sb = __in.rdbuf(); |
| __int_type __c = __sb->sbumpc(); |
| const __int_type __eof = _Traits::eof(); |
| __testdelim = __c == __idelim; |
| bool __testeof = __c == __eof; |
| |
| while (__extracted <= __n && !__testeof && !__testdelim) |
| { |
| __str += _Traits::to_char_type(__c); |
| ++__extracted; |
| __c = __sb->sbumpc(); |
| __testeof = __c == __eof; |
| __testdelim = __c == __idelim; |
| } |
| if (__testeof) |
| __in.setstate(ios_base::eofbit); |
| } |
| if (!__extracted && !__testdelim) |
| __in.setstate(ios_base::failbit); |
| return __in; |
| } |
| |
| template<class _CharT, class _Traits, class _Alloc> |
| inline basic_istream<_CharT,_Traits>& |
| getline(basic_istream<_CharT, _Traits>& __in, |
| basic_string<_CharT,_Traits,_Alloc>& __str) |
| { return getline(__in, __str, __in.widen('\n')); } |
| } // namespace std |
| |
| // Local Variables: |
| // mode:C++ |
| // End: |
| |