| // Input streams -*- C++ -*- |
| |
| // Copyright (C) 2004, 2005 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: 27.6.1 Input streams |
| // |
| |
| #include <istream> |
| |
| namespace std |
| { |
| template<> |
| basic_istream<char>& |
| basic_istream<char>:: |
| 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) |
| { |
| 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->sgetc(); |
| |
| while (_M_gcount + 1 < __n |
| && !traits_type::eq_int_type(__c, __eof) |
| && !traits_type::eq_int_type(__c, __idelim)) |
| { |
| 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(); |
| } |
| } |
| |
| if (traits_type::eq_int_type(__c, __eof)) |
| __err |= ios_base::eofbit; |
| else if (traits_type::eq_int_type(__c, __idelim)) |
| { |
| ++_M_gcount; |
| __sb->sbumpc(); |
| } |
| else |
| __err |= ios_base::failbit; |
| } |
| catch(...) |
| { this->_M_setstate(ios_base::badbit); } |
| } |
| // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| // 243. get and getline when sentry reports failure. |
| if (__n > 0) |
| *__s = char_type(); |
| if (!_M_gcount) |
| __err |= ios_base::failbit; |
| if (__err) |
| this->setstate(__err); |
| return *this; |
| } |
| |
| template<> |
| basic_istream<char>& |
| basic_istream<char>:: |
| 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 |
| { |
| 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(); |
| |
| bool __large_ignore = false; |
| while (true) |
| { |
| while (_M_gcount < __n |
| && !traits_type::eq_int_type(__c, __eof) |
| && !traits_type::eq_int_type(__c, __delim)) |
| { |
| streamsize __size = std::min(streamsize(__sb->egptr() |
| - __sb->gptr()), |
| streamsize(__n - _M_gcount)); |
| 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 (__n == numeric_limits<streamsize>::max() |
| && !traits_type::eq_int_type(__c, __eof) |
| && !traits_type::eq_int_type(__c, __delim)) |
| { |
| _M_gcount = numeric_limits<streamsize>::min(); |
| __large_ignore = true; |
| } |
| else |
| break; |
| } |
| |
| if (__large_ignore) |
| _M_gcount = numeric_limits<streamsize>::max(); |
| |
| if (traits_type::eq_int_type(__c, __eof)) |
| __err |= ios_base::eofbit; |
| else if (traits_type::eq_int_type(__c, __delim)) |
| { |
| if (_M_gcount < numeric_limits<streamsize>::max()) |
| ++_M_gcount; |
| __sb->sbumpc(); |
| } |
| } |
| catch(...) |
| { this->_M_setstate(ios_base::badbit); } |
| if (__err) |
| this->setstate(__err); |
| } |
| return *this; |
| } |
| |
| template<> |
| basic_istream<char>& |
| getline(basic_istream<char>& __in, basic_string<char>& __str, |
| char __delim) |
| { |
| typedef basic_istream<char> __istream_type; |
| typedef __istream_type::int_type __int_type; |
| typedef __istream_type::char_type __char_type; |
| typedef __istream_type::traits_type __traits_type; |
| typedef __istream_type::__streambuf_type __streambuf_type; |
| typedef __istream_type::__ctype_type __ctype_type; |
| typedef basic_string<char> __string_type; |
| typedef __string_type::size_type __size_type; |
| |
| __size_type __extracted = 0; |
| const __size_type __n = __str.max_size(); |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| __istream_type::sentry __cerb(__in, true); |
| if (__cerb) |
| { |
| try |
| { |
| __str.erase(); |
| const __int_type __idelim = __traits_type::to_int_type(__delim); |
| const __int_type __eof = __traits_type::eof(); |
| __streambuf_type* __sb = __in.rdbuf(); |
| __int_type __c = __sb->sgetc(); |
| |
| while (__extracted < __n |
| && !__traits_type::eq_int_type(__c, __eof) |
| && !__traits_type::eq_int_type(__c, __idelim)) |
| { |
| streamsize __size = std::min(streamsize(__sb->egptr() |
| - __sb->gptr()), |
| streamsize(__n - __extracted)); |
| if (__size > 1) |
| { |
| const __char_type* __p = __traits_type::find(__sb->gptr(), |
| __size, |
| __delim); |
| if (__p) |
| __size = __p - __sb->gptr(); |
| __str.append(__sb->gptr(), __size); |
| __sb->gbump(__size); |
| __extracted += __size; |
| __c = __sb->sgetc(); |
| } |
| else |
| { |
| __str += __traits_type::to_char_type(__c); |
| ++__extracted; |
| __c = __sb->snextc(); |
| } |
| } |
| |
| if (__traits_type::eq_int_type(__c, __eof)) |
| __err |= ios_base::eofbit; |
| else if (__traits_type::eq_int_type(__c, __idelim)) |
| { |
| ++__extracted; |
| __sb->sbumpc(); |
| } |
| else |
| __err |= ios_base::failbit; |
| } |
| catch(...) |
| { |
| // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| // 91. Description of operator>> and getline() for string<> |
| // might cause endless loop |
| __in._M_setstate(ios_base::badbit); |
| } |
| } |
| if (!__extracted) |
| __err |= ios_base::failbit; |
| if (__err) |
| __in.setstate(__err); |
| return __in; |
| } |
| |
| #ifdef _GLIBCXX_USE_WCHAR_T |
| template<> |
| basic_istream<wchar_t>& |
| basic_istream<wchar_t>:: |
| 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) |
| { |
| 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->sgetc(); |
| |
| while (_M_gcount + 1 < __n |
| && !traits_type::eq_int_type(__c, __eof) |
| && !traits_type::eq_int_type(__c, __idelim)) |
| { |
| 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(); |
| } |
| } |
| |
| if (traits_type::eq_int_type(__c, __eof)) |
| __err |= ios_base::eofbit; |
| else if (traits_type::eq_int_type(__c, __idelim)) |
| { |
| ++_M_gcount; |
| __sb->sbumpc(); |
| } |
| else |
| __err |= ios_base::failbit; |
| } |
| catch(...) |
| { this->_M_setstate(ios_base::badbit); } |
| } |
| // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| // 243. get and getline when sentry reports failure. |
| if (__n > 0) |
| *__s = char_type(); |
| if (!_M_gcount) |
| __err |= ios_base::failbit; |
| if (__err) |
| this->setstate(__err); |
| return *this; |
| } |
| |
| template<> |
| basic_istream<wchar_t>& |
| basic_istream<wchar_t>:: |
| 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 |
| { |
| 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(); |
| |
| bool __large_ignore = false; |
| while (true) |
| { |
| while (_M_gcount < __n |
| && !traits_type::eq_int_type(__c, __eof) |
| && !traits_type::eq_int_type(__c, __delim)) |
| { |
| streamsize __size = std::min(streamsize(__sb->egptr() |
| - __sb->gptr()), |
| streamsize(__n - _M_gcount)); |
| 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 (__n == numeric_limits<streamsize>::max() |
| && !traits_type::eq_int_type(__c, __eof) |
| && !traits_type::eq_int_type(__c, __delim)) |
| { |
| _M_gcount = numeric_limits<streamsize>::min(); |
| __large_ignore = true; |
| } |
| else |
| break; |
| } |
| |
| if (__large_ignore) |
| _M_gcount = numeric_limits<streamsize>::max(); |
| |
| if (traits_type::eq_int_type(__c, __eof)) |
| __err |= ios_base::eofbit; |
| else if (traits_type::eq_int_type(__c, __delim)) |
| { |
| if (_M_gcount < numeric_limits<streamsize>::max()) |
| ++_M_gcount; |
| __sb->sbumpc(); |
| } |
| } |
| catch(...) |
| { this->_M_setstate(ios_base::badbit); } |
| if (__err) |
| this->setstate(__err); |
| } |
| return *this; |
| } |
| |
| template<> |
| basic_istream<wchar_t>& |
| getline(basic_istream<wchar_t>& __in, basic_string<wchar_t>& __str, |
| wchar_t __delim) |
| { |
| typedef basic_istream<wchar_t> __istream_type; |
| typedef __istream_type::int_type __int_type; |
| typedef __istream_type::char_type __char_type; |
| typedef __istream_type::traits_type __traits_type; |
| typedef __istream_type::__streambuf_type __streambuf_type; |
| typedef __istream_type::__ctype_type __ctype_type; |
| typedef basic_string<wchar_t> __string_type; |
| typedef __string_type::size_type __size_type; |
| |
| __size_type __extracted = 0; |
| const __size_type __n = __str.max_size(); |
| ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); |
| __istream_type::sentry __cerb(__in, true); |
| if (__cerb) |
| { |
| try |
| { |
| __str.erase(); |
| const __int_type __idelim = __traits_type::to_int_type(__delim); |
| const __int_type __eof = __traits_type::eof(); |
| __streambuf_type* __sb = __in.rdbuf(); |
| __int_type __c = __sb->sgetc(); |
| |
| while (__extracted < __n |
| && !__traits_type::eq_int_type(__c, __eof) |
| && !__traits_type::eq_int_type(__c, __idelim)) |
| { |
| streamsize __size = std::min(streamsize(__sb->egptr() |
| - __sb->gptr()), |
| streamsize(__n - __extracted)); |
| if (__size > 1) |
| { |
| const __char_type* __p = __traits_type::find(__sb->gptr(), |
| __size, |
| __delim); |
| if (__p) |
| __size = __p - __sb->gptr(); |
| __str.append(__sb->gptr(), __size); |
| __sb->gbump(__size); |
| __extracted += __size; |
| __c = __sb->sgetc(); |
| } |
| else |
| { |
| __str += __traits_type::to_char_type(__c); |
| ++__extracted; |
| __c = __sb->snextc(); |
| } |
| } |
| |
| if (__traits_type::eq_int_type(__c, __eof)) |
| __err |= ios_base::eofbit; |
| else if (__traits_type::eq_int_type(__c, __idelim)) |
| { |
| ++__extracted; |
| __sb->sbumpc(); |
| } |
| else |
| __err |= ios_base::failbit; |
| } |
| catch(...) |
| { |
| // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| // 91. Description of operator>> and getline() for string<> |
| // might cause endless loop |
| __in._M_setstate(ios_base::badbit); |
| } |
| } |
| if (!__extracted) |
| __err |= ios_base::failbit; |
| if (__err) |
| __in.setstate(__err); |
| return __in; |
| } |
| #endif |
| } // namespace std |
