ostream

Go to the documentation of this file.
00001 // Output streams -*- C++ -*- 00002 00003 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 00004 // Free Software Foundation, Inc. 00005 // 00006 // This file is part of the GNU ISO C++ Library. This library is free 00007 // software; you can redistribute it and/or modify it under the 00008 // terms of the GNU General Public License as published by the 00009 // Free Software Foundation; either version 2, or (at your option) 00010 // any later version. 00011 00012 // This library is distributed in the hope that it will be useful, 00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 // GNU General Public License for more details. 00016 00017 // You should have received a copy of the GNU General Public License along 00018 // with this library; see the file COPYING. If not, write to the Free 00019 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 00020 // USA. 00021 00022 // As a special exception, you may use this file as part of a free software 00023 // library without restriction. Specifically, if other files instantiate 00024 // templates or use macros or inline functions from this file, or you compile 00025 // this file and link it with other files to produce an executable, this 00026 // file does not by itself cause the resulting executable to be covered by 00027 // the GNU General Public License. This exception does not however 00028 // invalidate any other reasons why the executable file might be covered by 00029 // the GNU General Public License. 00030 00031 // 00032 // ISO C++ 14882: 27.6.2 Output streams 00033 // 00034 00040 #ifndef _CPP_OSTREAM 00041 #define _CPP_OSTREAM 1 00042 00043 #pragma GCC system_header 00044 00045 #include <ios> 00046 00047 namespace std 00048 { 00049 // 27.6.2.1 Template class basic_ostream 00050 template<typename _CharT, typename _Traits> 00051 class basic_ostream : virtual public basic_ios<_CharT, _Traits> 00052 { 00053 public: 00054 // Types (inherited from basic_ios (27.4.4)): 00055 typedef _CharT char_type; 00056 typedef typename _Traits::int_type int_type; 00057 typedef typename _Traits::pos_type pos_type; 00058 typedef typename _Traits::off_type off_type; 00059 typedef _Traits traits_type; 00060 00061 // Non-standard Types: 00062 typedef basic_streambuf<_CharT, _Traits> __streambuf_type; 00063 typedef basic_ios<_CharT, _Traits> __ios_type; 00064 typedef basic_ostream<_CharT, _Traits> __ostream_type; 00065 typedef ostreambuf_iterator<_CharT, _Traits> __ostreambuf_iter; 00066 typedef num_put<_CharT, __ostreambuf_iter> __numput_type; 00067 typedef ctype<_CharT> __ctype_type; 00068 00069 // 27.6.2.2 Constructor/destructor: 00070 explicit 00071 basic_ostream(__streambuf_type* __sb) 00072 { this->init(__sb); } 00073 00074 virtual 00075 ~basic_ostream() { } 00076 00077 // 27.6.2.3 Prefix/suffix: 00078 class sentry; 00079 friend class sentry; 00080 00081 // 27.6.2.5 Formatted output: 00082 // 27.6.2.5.3 basic_ostream::operator<< 00083 __ostream_type& 00084 operator<<(__ostream_type& (*__pf)(__ostream_type&)); 00085 00086 __ostream_type& 00087 operator<<(__ios_type& (*__pf)(__ios_type&)); 00088 00089 __ostream_type& 00090 operator<<(ios_base& (*__pf) (ios_base&)); 00091 00092 // 27.6.2.5.2 Arithmetic Inserters 00093 __ostream_type& 00094 operator<<(long __n); 00095 00096 __ostream_type& 00097 operator<<(unsigned long __n); 00098 00099 __ostream_type& 00100 operator<<(bool __n); 00101 00102 __ostream_type& 00103 operator<<(short __n) 00104 { 00105 ios_base::fmtflags __fmt = this->flags() & ios_base::basefield; 00106 if (__fmt & ios_base::oct || __fmt & ios_base::hex) 00107 return this->operator<<(static_cast<unsigned long> 00108 (static_cast<unsigned short>(__n))); 00109 else 00110 return this->operator<<(static_cast<long>(__n)); 00111 } 00112 00113 __ostream_type& 00114 operator<<(unsigned short __n) 00115 { return this->operator<<(static_cast<unsigned long>(__n)); } 00116 00117 __ostream_type& 00118 operator<<(int __n) 00119 { 00120 ios_base::fmtflags __fmt = this->flags() & ios_base::basefield; 00121 if (__fmt & ios_base::oct || __fmt & ios_base::hex) 00122 return this->operator<<(static_cast<unsigned long> 00123 (static_cast<unsigned int>(__n))); 00124 else 00125 return this->operator<<(static_cast<long>(__n)); 00126 } 00127 00128 __ostream_type& 00129 operator<<(unsigned int __n) 00130 { return this->operator<<(static_cast<unsigned long>(__n)); } 00131 00132 #ifdef _GLIBCPP_USE_LONG_LONG 00133 __ostream_type& 00134 operator<<(long long __n); 00135 00136 __ostream_type& 00137 operator<<(unsigned long long __n); 00138 #endif 00139 00140 __ostream_type& 00141 operator<<(double __f); 00142 00143 __ostream_type& 00144 operator<<(float __f) 00145 { return this->operator<<(static_cast<double>(__f)); } 00146 00147 __ostream_type& 00148 operator<<(long double __f); 00149 00150 __ostream_type& 00151 operator<<(const void* __p); 00152 00153 __ostream_type& 00154 operator<<(__streambuf_type* __sb); 00155 00156 // Unformatted output: 00157 __ostream_type& 00158 put(char_type __c); 00159 00160 __ostream_type& 00161 write(const char_type* __s, streamsize __n); 00162 00163 __ostream_type& 00164 flush(); 00165 00166 // Seeks: 00167 pos_type 00168 tellp(); 00169 00170 __ostream_type& 00171 seekp(pos_type); 00172 00173 __ostream_type& 00174 seekp(off_type, ios_base::seekdir); 00175 }; 00176 00177 // 27.6.2.3 Class basic_ostream::sentry 00178 template <typename _CharT, typename _Traits> 00179 class basic_ostream<_CharT, _Traits>::sentry 00180 { 00181 // Data Members: 00182 bool _M_ok; 00183 basic_ostream<_CharT,_Traits>& _M_os; 00184 00185 public: 00186 explicit 00187 sentry(basic_ostream<_CharT,_Traits>& __os); 00188 00189 ~sentry() 00190 { 00191 // XXX MT 00192 if (_M_os.flags() & ios_base::unitbuf && !uncaught_exception()) 00193 { 00194 // Can't call flush directly or else will get into recursive lock. 00195 if (_M_os.rdbuf() && _M_os.rdbuf()->pubsync() == -1) 00196 _M_os.setstate(ios_base::badbit); 00197 } 00198 } 00199 00200 operator bool() 00201 { return _M_ok; } 00202 }; 00203 00204 template<typename _CharT, typename _Traits> 00205 basic_ostream<_CharT, _Traits>& 00206 operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c); 00207 00208 template<typename _CharT, typename _Traits> 00209 basic_ostream<_CharT, _Traits>& 00210 operator<<(basic_ostream<_CharT, _Traits>& __out, char __c) 00211 { return (__out << __out.widen(__c)); } 00212 00213 // Specialization 00214 template <class _Traits> 00215 basic_ostream<char, _Traits>& 00216 operator<<(basic_ostream<char, _Traits>& __out, char __c); 00217 00218 // Signed and unsigned 00219 template<class _Traits> 00220 basic_ostream<char, _Traits>& 00221 operator<<(basic_ostream<char, _Traits>& __out, signed char __c) 00222 { return (__out << static_cast<char>(__c)); } 00223 00224 template<class _Traits> 00225 basic_ostream<char, _Traits>& 00226 operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c) 00227 { return (__out << static_cast<char>(__c)); } 00228 00229 template<typename _CharT, typename _Traits> 00230 basic_ostream<_CharT, _Traits>& 00231 operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s); 00232 00233 template<typename _CharT, typename _Traits> 00234 basic_ostream<_CharT, _Traits> & 00235 operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s); 00236 00237 // Partial specializationss 00238 template<class _Traits> 00239 basic_ostream<char, _Traits>& 00240 operator<<(basic_ostream<char, _Traits>& __out, const char* __s); 00241 00242 // Signed and unsigned 00243 template<class _Traits> 00244 basic_ostream<char, _Traits>& 00245 operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s) 00246 { return (__out << reinterpret_cast<const char*>(__s)); } 00247 00248 template<class _Traits> 00249 basic_ostream<char, _Traits> & 00250 operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s) 00251 { return (__out << reinterpret_cast<const char*>(__s)); } 00252 00253 // 27.6.2.7 Standard basic_ostream manipulators 00254 template<typename _CharT, typename _Traits> 00255 basic_ostream<_CharT, _Traits>& 00256 endl(basic_ostream<_CharT, _Traits>& __os) 00257 { return flush(__os.put(__os.widen('\n'))); } 00258 00259 template<typename _CharT, typename _Traits> 00260 basic_ostream<_CharT, _Traits>& 00261 ends(basic_ostream<_CharT, _Traits>& __os) 00262 { return __os.put(_CharT()); } 00263 00264 template<typename _CharT, typename _Traits> 00265 basic_ostream<_CharT, _Traits>& 00266 flush(basic_ostream<_CharT, _Traits>& __os) 00267 { return __os.flush(); } 00268 00269 } // namespace std 00270 00271 #ifdef _GLIBCPP_NO_TEMPLATE_EXPORT 00272 # define export 00273 #endif 00274 #ifdef _GLIBCPP_FULLY_COMPLIANT_HEADERS 00275 # include <bits/ostream.tcc> 00276 #endif 00277 00278 #endif /* _CPP_OSTREAM */

Generated on Wed Sep 29 13:54:49 2004 for libstdc++-v3 Source by doxygen 1.3.7