-// Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+// istream classes -*- C++ -*-
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
+// 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
// the GNU General Public License.
//
-// ISO C++ 14882: 27.6.2 Output streams
+// ISO C++ 14882: 27.6.1 Input streams
//
-#include <bits/std_locale.h>
-#include <bits/std_ostream.h> // for flush()
+#ifndef _ISTREAM_TCC
+#define _ISTREAM_TCC 1
+
+#pragma GCC system_header
+
+#include <locale>
+#include <ostream> // For flush()
-namespace std
+namespace std
{
template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>::sentry::
- sentry(basic_istream<_CharT, _Traits>& __in, bool __noskipws)
+ sentry(basic_istream<_CharT, _Traits>& __in, bool __noskip) : _M_ok(false)
{
- if (__in.good())
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ if (__in.good())
{
if (__in.tie())
__in.tie()->flush();
- if (!__noskipws && (__in.flags() & ios_base::skipws))
- {
+ if (!__noskip && (__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))
+
+ const __ctype_type& __ct = __check_facet(__in._M_ctype);
+ while (!traits_type::eq_int_type(__c, __eof)
+ && __ct.is(ctype_base::space,
+ traits_type::to_char_type(__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
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 195. Should basic_istream::sentry's constructor ever
+ // set eofbit?
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
}
}
- if (__in.good())
+ if (__in.good() && __err == ios_base::goodbit)
_M_ok = true;
else
{
- _M_ok = false;
- __in.setstate(ios_base::failbit);
+ __err |= ios_base::failbit;
+ __in.setstate(__err);
}
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(__istream_type& (*__pf)(__istream_type&))
- {
- __pf(*this);
- return *this;
- }
+ { return __pf(*this); }
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _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>&
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>&
basic_istream<_CharT, _Traits>::
operator>>(bool& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ 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)
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- // 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(short& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
long __l;
- if (_M_check_facet(_M_fnumget))
- _M_fnumget->get(*this, 0, *this, __err, __l);
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __l);
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
// 118. basic_istream uses nonexistent num_get member functions.
if (!(__err & ios_base::failbit)
- && (numeric_limits<short>::min() <= __l
+ && (numeric_limits<short>::min() <= __l
&& __l <= numeric_limits<short>::max()))
__n = __l;
else
__err |= ios_base::failbit;
-#endif
- 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;
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(unsigned short& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(int& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
long __l;
- if (_M_check_facet(_M_fnumget))
- _M_fnumget->get(*this, 0, *this, __err, __l);
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __l);
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
// 118. basic_istream uses nonexistent num_get member functions.
if (!(__err & ios_base::failbit)
- && (numeric_limits<int>::min() <= __l
+ && (numeric_limits<int>::min() <= __l
&& __l <= numeric_limits<int>::max()))
__n = __l;
else
__err |= ios_base::failbit;
-#endif
- 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;
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(unsigned int& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(long& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ 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)
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- // 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(unsigned long& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ 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)
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- // 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
-#ifdef _GLIBCPP_USE_LONG_LONG
+#ifdef _GLIBCXX_USE_LONG_LONG
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(long long& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(unsigned long long& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ 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)
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- // 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
#endif
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(float& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ 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)
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- // 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(double& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(long double& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(void*& __n)
{
sentry __cerb(*this, false);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __n);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
template<typename _CharT, typename _Traits>
- basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
operator>>(__streambuf_type* __sbout)
{
- sentry __cerb(*this, false);
- if (__cerb)
- {
- try
- {
- streamsize __xtrct = 0;
- if (__sbout)
- {
- __streambuf_type* __sbin = this->rdbuf();
- __xtrct = __copy_streambufs(*this, __sbin, __sbout);
- }
- if (!__sbout || !__xtrct)
- this->setstate(ios_base::failbit);
- }
- catch(exception& __fail)
- {
- // 27.6.2.5.1 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;
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ sentry __cerb(*this, false);
+ if (__cerb && __sbout)
+ {
+ try
+ {
+ if (!__copy_streambufs(this->rdbuf(), __sbout))
+ __err |= ios_base::failbit;
+ }
+ catch(...)
+ { this->_M_setstate(ios_base::failbit); }
+ }
+ else if (!__sbout)
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
+ return *this;
}
template<typename _CharT, typename _Traits>
const int_type __eof = traits_type::eof();
int_type __c = __eof;
_M_gcount = 0;
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
sentry __cerb(*this, true);
- if (__cerb)
+ if (__cerb)
{
- try
+ try
{
__c = this->rdbuf()->sbumpc();
// 27.6.1.1 paragraph 3
- if (__c != __eof)
+ if (!traits_type::eq_int_type(__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;
+ __err |= ios_base::eofbit;
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
}
+ if (!_M_gcount)
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
return __c;
}
get(char_type& __c)
{
_M_gcount = 0;
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
sentry __cerb(*this, true);
- if (__cerb)
+ if (__cerb)
{
- try
+ try
{
- const int_type __eof = traits_type::eof();
- int_type __bufval = this->rdbuf()->sbumpc();
+ const int_type __cb = this->rdbuf()->sbumpc();
// 27.6.1.1 paragraph 3
- if (__bufval != __eof)
+ if (!traits_type::eq_int_type(__cb, traits_type::eof()))
{
_M_gcount = 1;
- __c = traits_type::to_char_type(__bufval);
+ __c = traits_type::to_char_type(__cb);
}
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;
+ __err |= ios_base::eofbit;
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
}
+ if (!_M_gcount)
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
return *this;
}
get(char_type* __s, streamsize __n, char_type __delim)
{
_M_gcount = 0;
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
sentry __cerb(*this, true);
- if (__cerb && __n > 1)
+ if (__cerb)
{
- try
+ 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)
+ int_type __c = __sb->sgetc();
+
+ while (_M_gcount + 1 < __n
+ && !traits_type::eq_int_type(__c, __eof)
+ && !traits_type::eq_int_type(__c, __idelim))
{
*__s++ = traits_type::to_char_type(__c);
++_M_gcount;
- __c = __sb->sbumpc();
- __testeof = __c == __eof;
- __testdelim = __c == __idelim;
+ __c = __sb->snextc();
}
- 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;
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
}
*__s = char_type();
if (!_M_gcount)
- this->setstate(ios_base::failbit);
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
return *this;
}
get(__streambuf_type& __sb, char_type __delim)
{
_M_gcount = 0;
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
sentry __cerb(*this, true);
- if (__cerb)
+ if (__cerb)
{
- int_type __c;
- __streambuf_type* __this_sb = this->rdbuf();
- try
+ 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))
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __this_sb = this->rdbuf();
+ int_type __c = __this_sb->sgetc();
+ char_type __c2 = traits_type::to_char_type(__c);
+
+ while (!traits_type::eq_int_type(__c, __eof)
+ && !traits_type::eq_int_type(__c, __idelim)
+ && !traits_type::eq_int_type(__sb.sputc(__c2), __eof))
{
++_M_gcount;
- __c = __this_sb->sbumpc();
- __testeof = __c == __eof;
- __testdelim = __c == __idelim;
+ __c = __this_sb->snextc();
+ __c2 = traits_type::to_char_type(__c);
}
- 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 (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
}
if (!_M_gcount)
- this->setstate(ios_base::failbit);
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
return *this;
}
getline(char_type* __s, streamsize __n, char_type __delim)
{
_M_gcount = 0;
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
sentry __cerb(*this, true);
- if (__cerb)
+ if (__cerb)
{
- try
+ 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;
- }
+ __streambuf_type* __sb = this->rdbuf();
+ int_type __c = __sb->sgetc();
- if (__testeof)
+ while (_M_gcount + 1 < __n
+ && !traits_type::eq_int_type(__c, __eof)
+ && !traits_type::eq_int_type(__c, __idelim))
{
- --_M_gcount;
- this->setstate(ios_base::eofbit);
+ streamsize __size = std::min(streamsize(__sb->egptr()
+ - __sb->gptr()),
+ streamsize(__n - _M_gcount
+ - 1));
+ if (__size > 1)
+ {
+ const char_type* __p = traits_type::find(__sb->gptr(),
+ __size,
+ __delim);
+ if (__p)
+ __size = __p - __sb->gptr();
+ traits_type::copy(__s, __sb->gptr(), __size);
+ __s += __size;
+ __sb->gbump(__size);
+ _M_gcount += __size;
+ __c = __sb->sgetc();
+ }
+ else
+ {
+ *__s++ = traits_type::to_char_type(__c);
+ ++_M_gcount;
+ __c = __sb->snextc();
+ }
}
- else if (!__testdelim)
+
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ else if (traits_type::eq_int_type(__c, __idelim))
{
- --_M_gcount;
- __sb->sputbackc(traits_type::to_char_type(__c));
- this->setstate(ios_base::failbit);
+ ++_M_gcount;
+ __sb->sbumpc();
}
+ else
+ __err |= 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;
- }
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
}
*__s = char_type();
if (!_M_gcount)
- this->setstate(ios_base::failbit);
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
return *this;
}
-
+
+ // We provide three overloads, since the first two are much simpler
+ // than the general case. Also, the latter two can thus adopt the
+ // same "batchy" strategy used by getline above.
template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
- ignore(streamsize __n, int_type __delim)
+ ignore(void)
{
_M_gcount = 0;
sentry __cerb(*this, true);
- if (__cerb && __n > 0)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+
+ if (traits_type::eq_int_type(__sb->sbumpc(), __eof))
+ __err |= ios_base::eofbit;
+ else
+ _M_gcount = 1;
+ }
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ ignore(streamsize __n)
+ {
+ if (__n == 1)
+ return ignore();
+
+ _M_gcount = 0;
+ sentry __cerb(*this, true);
+ if (__cerb && __n > 0)
+ {
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
+ {
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = this->rdbuf();
+ int_type __c = __sb->sgetc();
- __n = min(__n, numeric_limits<streamsize>::max());
- while (_M_gcount < __n - 1 && !__testeof && !__testdelim)
+ const bool __bound = __n != numeric_limits<streamsize>::max();
+ if (__bound)
+ --__n;
+ while (_M_gcount <= __n
+ && !traits_type::eq_int_type(__c, __eof))
{
- ++_M_gcount;
- __c = __sb->sbumpc();
- __testeof = __c == __eof;
- __testdelim = __c == __idelim;
+ streamsize __size = __sb->egptr() - __sb->gptr();
+ if (__bound)
+ __size = std::min(__size, streamsize(__n - _M_gcount + 1));
+
+ if (__size > 1)
+ {
+ __sb->gbump(__size);
+ _M_gcount += __size;
+ __c = __sb->sgetc();
+ }
+ else
+ {
+ ++_M_gcount;
+ __c = __sb->snextc();
+ }
}
- if ((_M_gcount == __n - 1 && !__testeof) || __testdelim)
- ++_M_gcount;
- if (__testeof)
- this->setstate(ios_base::eofbit);
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
}
- catch(exception& __fail)
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ ignore(streamsize __n, int_type __delim)
+ {
+ if (traits_type::eq_int_type(__delim, traits_type::eof()))
+ return ignore(__n);
+
+ _M_gcount = 0;
+ sentry __cerb(*this, true);
+ if (__cerb && __n > 0)
+ {
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- // 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;
+ const char_type __cdelim = traits_type::to_char_type(__delim);
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = this->rdbuf();
+ int_type __c = __sb->sgetc();
+
+ const bool __bound = __n != numeric_limits<streamsize>::max();
+ if (__bound)
+ --__n;
+ while (_M_gcount <= __n
+ && !traits_type::eq_int_type(__c, __eof)
+ && !traits_type::eq_int_type(__c, __delim))
+ {
+ streamsize __size = __sb->egptr() - __sb->gptr();
+ if (__bound)
+ __size = std::min(__size, streamsize(__n - _M_gcount + 1));
+
+ if (__size > 1)
+ {
+ const char_type* __p = traits_type::find(__sb->gptr(),
+ __size,
+ __cdelim);
+ if (__p)
+ __size = __p - __sb->gptr();
+ __sb->gbump(__size);
+ _M_gcount += __size;
+ __c = __sb->sgetc();
+ }
+ else
+ {
+ ++_M_gcount;
+ __c = __sb->snextc();
+ }
+ }
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ else if (traits_type::eq_int_type(__c, __delim))
+ {
+ ++_M_gcount;
+ __sb->sbumpc();
+ }
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return *this;
}
-
+
template<typename _CharT, typename _Traits>
typename basic_istream<_CharT, _Traits>::int_type
basic_istream<_CharT, _Traits>::
sentry __cerb(*this, true);
if (__cerb)
{
- try
- { __c = this->rdbuf()->sgetc(); }
- catch(exception& __fail)
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- // 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;
+ __c = this->rdbuf()->sgetc();
+ if (traits_type::eq_int_type(__c, traits_type::eof()))
+ __err |= ios_base::eofbit;
}
- }
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
return __c;
}
{
_M_gcount = 0;
sentry __cerb(*this, true);
- if (__cerb)
+ if (__cerb)
{
- if (__n > 0)
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- 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;
- }
+ _M_gcount = this->rdbuf()->sgetn(__s, __n);
+ if (_M_gcount != __n)
+ __err |= (ios_base::eofbit | ios_base::failbit);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
- else
- this->setstate(ios_base::failbit);
return *this;
}
-
+
template<typename _CharT, typename _Traits>
- streamsize
+ 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 (__cerb)
{
- if (__n > 0)
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- 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;
- }
+ // Cannot compare int_type with streamsize generically.
+ const streamsize __num = this->rdbuf()->in_avail();
+ if (__num > 0)
+ _M_gcount = this->rdbuf()->sgetn(__s, std::min(__num, __n));
+ else if (__num == -1)
+ __err |= ios_base::eofbit;
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
- 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)
{
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 60. What is a formatted input function?
+ _M_gcount = 0;
sentry __cerb(*this, true);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+ if (!__sb
+ || traits_type::eq_int_type(__sb->sputbackc(__c), __eof))
+ __err |= ios_base::badbit;
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
- else
- this->setstate(ios_base::failbit);
return *this;
}
-
+
template<typename _CharT, typename _Traits>
basic_istream<_CharT, _Traits>&
basic_istream<_CharT, _Traits>::
unget(void)
{
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 60. What is a formatted input function?
_M_gcount = 0;
sentry __cerb(*this, true);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+ if (!__sb
+ || traits_type::eq_int_type(__sb->sungetc(), __eof))
+ __err |= ios_base::badbit;
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
- 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;
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR60. Do not change _M_gcount.
+ int __ret = -1;
sentry __cerb(*this, true);
- if (__cerb)
+ if (__cerb)
{
- try
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ 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;
+ if (__sb)
+ {
+ if (__sb->pubsync() == -1)
+ __err |= ios_base::badbit;
+ else
+ __ret = 0;
+ }
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
}
return __ret;
}
-
+
template<typename _CharT, typename _Traits>
typename basic_istream<_CharT, _Traits>::pos_type
basic_istream<_CharT, _Traits>::
tellg(void)
{
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR60. Do not change _M_gcount.
pos_type __ret = pos_type(-1);
- _M_gcount = 0;
- sentry __cerb(*this, true);
- if (__cerb)
+ try
{
- 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;
- }
+ if (!this->fail())
+ __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::in);
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
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)
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR60. Do not change _M_gcount.
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- try
+ if (!this->fail())
{
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
-// 136. seekp, seekg setting wrong streams?
- pos_type __err = this->rdbuf()->pubseekpos(__pos, ios_base::in);
+ // 136. seekp, seekg setting wrong streams?
+ const pos_type __p = this->rdbuf()->pubseekpos(__pos,
+ ios_base::in);
-// 129. Need error indication from seekp() and seekg()
- if (__err == pos_type(off_type(-1)))
- this->setstate(ios_base::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;
+ // 129. Need error indication from seekp() and seekg()
+ if (__p == pos_type(off_type(-1)))
+ __err |= ios_base::failbit;
}
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
return *this;
}
basic_istream<_CharT, _Traits>::
seekg(off_type __off, ios_base::seekdir __dir)
{
- _M_gcount = 0;
- sentry __cerb(*this, true);
- if (__cerb)
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR60. Do not change _M_gcount.
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- try
+ if (!this->fail())
{
-#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(ios_base::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;
+ // 136. seekp, seekg setting wrong streams?
+ const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir,
+ ios_base::in);
+
+ // 129. Need error indication from seekp() and seekg()
+ if (__p == pos_type(off_type(-1)))
+ __err |= ios_base::failbit;
}
}
+ catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
return *this;
}
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
{
- typedef basic_istream<_CharT, _Traits> __istream_type;
+ typedef basic_istream<_CharT, _Traits> __istream_type;
+ typedef typename __istream_type::int_type __int_type;
+
typename __istream_type::sentry __cerb(__in, false);
if (__cerb)
{
- try
- { __in.get(__c); }
- catch(exception& __fail)
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
+ try
{
- // 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;
+ const __int_type __cb = __in.rdbuf()->sbumpc();
+ if (!_Traits::eq_int_type(__cb, _Traits::eof()))
+ __c = _Traits::to_char_type(__cb);
+ else
+ __err |= (ios_base::eofbit | ios_base::failbit);
}
+ catch(...)
+ { __in._M_setstate(ios_base::badbit); }
+ if (__err)
+ __in.setstate(__err);
}
- else
- __in.setstate(ios_base::failbit);
return __in;
}
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
{
- typedef basic_istream<_CharT, _Traits> __istream_type;
+ 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;
+ typedef typename _Traits::int_type int_type;
+ typedef _CharT char_type;
+ typedef ctype<_CharT> __ctype_type;
+ streamsize __extracted = 0;
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
typename __istream_type::sentry __cerb(__in, false);
if (__cerb)
{
- try
+ try
{
// Figure out how many characters to extract.
streamsize __num = __in.width();
- if (__num == 0)
+ 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 __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
+
const int_type __eof = _Traits::eof();
- bool __testsp = __ctype->is(ctype_base::space, __c);
- bool __testeof = __c == __eof;
-
- while (__extracted < __num - 1 && !__testeof && !__testsp)
+ __streambuf_type* __sb = __in.rdbuf();
+ int_type __c = __sb->sgetc();
+
+ while (__extracted < __num - 1
+ && !_Traits::eq_int_type(__c, __eof)
+ && !__ct.is(ctype_base::space,
+ _Traits::to_char_type(__c)))
{
- *__s++ = __c;
+ *__s++ = _Traits::to_char_type(__c);
++__extracted;
- __c = __sb->sbumpc();
- __testeof = __c == __eof;
- __testsp = __ctype->is(ctype_base::space, __c);
+ __c = __sb->snextc();
}
-
- if (!__testeof)
- __sb->sputbackc(__c);
- else
- __in.setstate(ios_base::eofbit);
+ if (_Traits::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
-//68. Extractors for char* should store null at end
+ // _GLIBCXX_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;
- }
+ catch(...)
+ { __in._M_setstate(ios_base::badbit); }
}
if (!__extracted)
- __in.setstate(ios_base::failbit);
+ __err |= ios_base::failbit;
+ if (__err)
+ __in.setstate(__err);
return __in;
}
// 27.6.1.4 Standard basic_istream manipulators
template<typename _CharT, typename _Traits>
- basic_istream<_CharT,_Traits>&
+ basic_istream<_CharT,_Traits>&
ws(basic_istream<_CharT,_Traits>& __in)
{
- typedef basic_istream<_CharT, _Traits> __istream_type;
+ 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;
+ typedef typename __istream_type::__ctype_type __ctype_type;
+ typedef typename __istream_type::int_type __int_type;
+ const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
+ const __int_type __eof = _Traits::eof();
__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);
+ __int_type __c = __sb->sgetc();
- if (!__testeof && !__testsp)
- __sb->sputbackc(__c);
- else
- __in.setstate(ios_base::eofbit);
+ while (!_Traits::eq_int_type(__c, __eof)
+ && __ct.is(ctype_base::space, _Traits::to_char_type(__c)))
+ __c = __sb->snextc();
+ if (_Traits::eq_int_type(__c, __eof))
+ __in.setstate(ios_base::eofbit);
return __in;
}
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 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 __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;
+ __size_type __extracted = 0;
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
typename __istream_type::sentry __cerb(__in, false);
- if (__cerb)
+ 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)
+ try
{
- __str += _Traits::to_char_type(__c);
- ++__extracted;
- __c = __sb->sbumpc();
- __testeof = __c == __eof;
- __testsp = __ctype->is(ctype_base::space, __c);
+ // Avoid reallocation for common case.
+ __str.erase();
+ _CharT __buf[128];
+ __size_type __len = 0;
+ const streamsize __w = __in.width();
+ const __size_type __n = __w > 0 ? static_cast<__size_type>(__w)
+ : __str.max_size();
+ const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
+ const __int_type __eof = _Traits::eof();
+ __streambuf_type* __sb = __in.rdbuf();
+ __int_type __c = __sb->sgetc();
+
+ while (__extracted < __n
+ && !_Traits::eq_int_type(__c, __eof)
+ && !__ct.is(ctype_base::space, _Traits::to_char_type(__c)))
+ {
+ if (__len == sizeof(__buf) / sizeof(_CharT))
+ {
+ __str.append(__buf, sizeof(__buf) / sizeof(_CharT));
+ __len = 0;
+ }
+ __buf[__len++] = _Traits::to_char_type(__c);
+ ++__extracted;
+ __c = __sb->snextc();
+ }
+ __str.append(__buf, __len);
+
+ if (_Traits::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ __in.width(0);
+ }
+ catch(...)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 91. Description of operator>> and getline() for string<>
+ // might cause endless loop
+ __in._M_setstate(ios_base::badbit);
}
- if (!__testeof)
- __sb->sputbackc(__c);
- else
- __in.setstate(ios_base::eofbit);
- __in.width(0);
}
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
-//211. operator>>(istream&, string&) doesn't set failbit
+ // 211. operator>>(istream&, string&) doesn't set failbit
if (!__extracted)
- __in.setstate (ios_base::failbit);
-#endif
+ __err |= ios_base::failbit;
+ if (__err)
+ __in.setstate(__err);
return __in;
}
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 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 __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;
+ const __size_type __n = __str.max_size();
+ ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
typename __istream_type::sentry __cerb(__in, true);
- if (__cerb)
+ if (__cerb)
{
- __str.erase();
- __size_type __n = __str.max_size();
+ try
+ {
+ // Avoid reallocation for common case.
+ __str.erase();
+ _CharT __buf[128];
+ __size_type __len = 0;
+ const __int_type __idelim = _Traits::to_int_type(__delim);
+ const __int_type __eof = _Traits::eof();
+ __streambuf_type* __sb = __in.rdbuf();
+ __int_type __c = __sb->sgetc();
- __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
+ && !_Traits::eq_int_type(__c, __eof)
+ && !_Traits::eq_int_type(__c, __idelim))
+ {
+ if (__len == sizeof(__buf) / sizeof(_CharT))
+ {
+ __str.append(__buf, sizeof(__buf) / sizeof(_CharT));
+ __len = 0;
+ }
+ __buf[__len++] = _Traits::to_char_type(__c);
+ ++__extracted;
+ __c = __sb->snextc();
+ }
+ __str.append(__buf, __len);
- while (__extracted <= __n && !__testeof && !__testdelim)
+ if (_Traits::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ else if (_Traits::eq_int_type(__c, __idelim))
+ {
+ ++__extracted;
+ __sb->sbumpc();
+ }
+ else
+ __err |= ios_base::failbit;
+ }
+ catch(...)
{
- __str += _Traits::to_char_type(__c);
- ++__extracted;
- __c = __sb->sbumpc();
- __testeof = __c == __eof;
- __testdelim = __c == __idelim;
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 91. Description of operator>> and getline() for string<>
+ // might cause endless loop
+ __in._M_setstate(ios_base::badbit);
}
- if (__testeof)
- __in.setstate(ios_base::eofbit);
}
- if (!__extracted && !__testdelim)
- __in.setstate(ios_base::failbit);
+ if (!__extracted)
+ __err |= ios_base::failbit;
+ if (__err)
+ __in.setstate(__err);
return __in;
}
template<class _CharT, class _Traits, class _Alloc>
inline basic_istream<_CharT,_Traits>&
- getline(basic_istream<_CharT, _Traits>& __in,
+ getline(basic_istream<_CharT, _Traits>& __in,
basic_string<_CharT,_Traits,_Alloc>& __str)
{ return getline(__in, __str, __in.widen('\n')); }
+
+ // Inhibit implicit instantiations for required instantiations,
+ // which are defined via explicit instantiations elsewhere.
+ // NB: This syntax is a GNU extension.
+#if _GLIBCXX_EXTERN_TEMPLATE
+ extern template class basic_istream<char>;
+ extern template istream& ws(istream&);
+ extern template istream& operator>>(istream&, char&);
+ extern template istream& operator>>(istream&, char*);
+ extern template istream& operator>>(istream&, unsigned char&);
+ extern template istream& operator>>(istream&, signed char&);
+ extern template istream& operator>>(istream&, unsigned char*);
+ extern template istream& operator>>(istream&, signed char*);
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+ extern template class basic_istream<wchar_t>;
+ extern template wistream& ws(wistream&);
+ extern template wistream& operator>>(wistream&, wchar_t&);
+ extern template wistream& operator>>(wistream&, wchar_t*);
+#endif
+#endif
} // namespace std
-// Local Variables:
-// mode:C++
-// End:
+#endif
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