1// ostream classes -*- C++ -*- 2 3// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 4// 2006, 2007 5// Free Software Foundation, Inc. 6// 7// This file is part of the GNU ISO C++ Library. This library is free 8// software; you can redistribute it and/or modify it under the 9// terms of the GNU General Public License as published by the 10// Free Software Foundation; either version 2, or (at your option) 11// any later version. 12 13// This library is distributed in the hope that it will be useful, 14// but WITHOUT ANY WARRANTY; without even the implied warranty of 15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16// GNU General Public License for more details. 17 18// You should have received a copy of the GNU General Public License along 19// with this library; see the file COPYING. If not, write to the Free 20// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 21// USA. 22 23// As a special exception, you may use this file as part of a free software 24// library without restriction. Specifically, if other files instantiate 25// templates or use macros or inline functions from this file, or you compile 26// this file and link it with other files to produce an executable, this 27// file does not by itself cause the resulting executable to be covered by 28// the GNU General Public License. This exception does not however 29// invalidate any other reasons why the executable file might be covered by 30// the GNU General Public License. 31 32/** @file ostream.tcc 33 * This is an internal header file, included by other library headers. 34 * You should not attempt to use it directly. 35 */ 36 37// 38// ISO C++ 14882: 27.6.2 Output streams 39// 40 41#ifndef _OSTREAM_TCC 42#define _OSTREAM_TCC 1 43 44#pragma GCC system_header 45 46#include <locale> 47 48_GLIBCXX_BEGIN_NAMESPACE(std) 49 50 template<typename _CharT, typename _Traits> 51 basic_ostream<_CharT, _Traits>::sentry:: 52 sentry(basic_ostream<_CharT, _Traits>& __os) 53 : _M_ok(false), _M_os(__os) 54 { 55 // XXX MT 56 if (__os.tie() && __os.good()) 57 __os.tie()->flush(); 58 59 if (__os.good()) 60 _M_ok = true; 61 else 62 __os.setstate(ios_base::failbit); 63 } 64 65 template<typename _CharT, typename _Traits> 66 template<typename _ValueT> 67 basic_ostream<_CharT, _Traits>& 68 basic_ostream<_CharT, _Traits>:: 69 _M_insert(_ValueT __v) 70 { 71 sentry __cerb(*this); 72 if (__cerb) 73 { 74 ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); 75 try 76 { 77 const __num_put_type& __np = __check_facet(this->_M_num_put); 78 if (__np.put(*this, *this, this->fill(), __v).failed()) 79 __err |= ios_base::badbit; 80 } 81 catch(...) 82 { this->_M_setstate(ios_base::badbit); } 83 if (__err) 84 this->setstate(__err); 85 } 86 return *this; 87 } 88 89 template<typename _CharT, typename _Traits> 90 basic_ostream<_CharT, _Traits>& 91 basic_ostream<_CharT, _Traits>:: 92 operator<<(short __n) 93 { 94 // _GLIBCXX_RESOLVE_LIB_DEFECTS 95 // 117. basic_ostream uses nonexistent num_put member functions. 96 const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield; 97 if (__fmt == ios_base::oct || __fmt == ios_base::hex) 98 return _M_insert(static_cast<long>(static_cast<unsigned short>(__n))); 99 else 100 return _M_insert(static_cast<long>(__n)); 101 } 102 103 template<typename _CharT, typename _Traits> 104 basic_ostream<_CharT, _Traits>& 105 basic_ostream<_CharT, _Traits>:: 106 operator<<(int __n) 107 { 108 // _GLIBCXX_RESOLVE_LIB_DEFECTS 109 // 117. basic_ostream uses nonexistent num_put member functions. 110 const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield; 111 if (__fmt == ios_base::oct || __fmt == ios_base::hex) 112 return _M_insert(static_cast<long>(static_cast<unsigned int>(__n))); 113 else 114 return _M_insert(static_cast<long>(__n)); 115 } 116 117 template<typename _CharT, typename _Traits> 118 basic_ostream<_CharT, _Traits>& 119 basic_ostream<_CharT, _Traits>:: 120 operator<<(__streambuf_type* __sbin) 121 { 122 ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); 123 sentry __cerb(*this); 124 if (__cerb && __sbin) 125 { 126 try 127 { 128 if (!__copy_streambufs(__sbin, this->rdbuf())) 129 __err |= ios_base::failbit; 130 } 131 catch(...) 132 { this->_M_setstate(ios_base::failbit); } 133 } 134 else if (!__sbin) 135 __err |= ios_base::badbit; 136 if (__err) 137 this->setstate(__err); 138 return *this; 139 } 140 141 template<typename _CharT, typename _Traits> 142 basic_ostream<_CharT, _Traits>& 143 basic_ostream<_CharT, _Traits>:: 144 put(char_type __c) 145 { 146 // _GLIBCXX_RESOLVE_LIB_DEFECTS 147 // DR 60. What is a formatted input function? 148 // basic_ostream::put(char_type) is an unformatted output function. 149 // DR 63. Exception-handling policy for unformatted output. 150 // Unformatted output functions should catch exceptions thrown 151 // from streambuf members. 152 sentry __cerb(*this); 153 if (__cerb) 154 { 155 ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); 156 try 157 { 158 const int_type __put = this->rdbuf()->sputc(__c); 159 if (traits_type::eq_int_type(__put, traits_type::eof())) 160 __err |= ios_base::badbit; 161 } 162 catch (...) 163 { this->_M_setstate(ios_base::badbit); } 164 if (__err) 165 this->setstate(__err); 166 } 167 return *this; 168 } 169 170 template<typename _CharT, typename _Traits> 171 basic_ostream<_CharT, _Traits>& 172 basic_ostream<_CharT, _Traits>:: 173 write(const _CharT* __s, streamsize __n) 174 { 175 // _GLIBCXX_RESOLVE_LIB_DEFECTS 176 // DR 60. What is a formatted input function? 177 // basic_ostream::write(const char_type*, streamsize) is an 178 // unformatted output function. 179 // DR 63. Exception-handling policy for unformatted output. 180 // Unformatted output functions should catch exceptions thrown 181 // from streambuf members. 182 sentry __cerb(*this); 183 if (__cerb) 184 { 185 try 186 { _M_write(__s, __n); } 187 catch (...) 188 { this->_M_setstate(ios_base::badbit); } 189 } 190 return *this; 191 } 192 193 template<typename _CharT, typename _Traits> 194 basic_ostream<_CharT, _Traits>& 195 basic_ostream<_CharT, _Traits>:: 196 flush() 197 { 198 // _GLIBCXX_RESOLVE_LIB_DEFECTS 199 // DR 60. What is a formatted input function? 200 // basic_ostream::flush() is *not* an unformatted output function. 201 ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); 202 try 203 { 204 if (this->rdbuf() && this->rdbuf()->pubsync() == -1) 205 __err |= ios_base::badbit; 206 } 207 catch(...) 208 { this->_M_setstate(ios_base::badbit); } 209 if (__err) 210 this->setstate(__err); 211 return *this; 212 } 213 214 template<typename _CharT, typename _Traits> 215 typename basic_ostream<_CharT, _Traits>::pos_type 216 basic_ostream<_CharT, _Traits>:: 217 tellp() 218 { 219 pos_type __ret = pos_type(-1); 220 try 221 { 222 if (!this->fail()) 223 __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::out); 224 } 225 catch(...) 226 { this->_M_setstate(ios_base::badbit); } 227 return __ret; 228 } 229 230 template<typename _CharT, typename _Traits> 231 basic_ostream<_CharT, _Traits>& 232 basic_ostream<_CharT, _Traits>:: 233 seekp(pos_type __pos) 234 { 235 ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); 236 try 237 { 238 if (!this->fail()) 239 { 240 // _GLIBCXX_RESOLVE_LIB_DEFECTS 241 // 136. seekp, seekg setting wrong streams? 242 const pos_type __p = this->rdbuf()->pubseekpos(__pos, 243 ios_base::out); 244 245 // 129. Need error indication from seekp() and seekg() 246 if (__p == pos_type(off_type(-1))) 247 __err |= ios_base::failbit; 248 } 249 } 250 catch(...) 251 { this->_M_setstate(ios_base::badbit); } 252 if (__err) 253 this->setstate(__err); 254 return *this; 255 } 256 257 template<typename _CharT, typename _Traits> 258 basic_ostream<_CharT, _Traits>& 259 basic_ostream<_CharT, _Traits>:: 260 seekp(off_type __off, ios_base::seekdir __dir) 261 { 262 ios_base::iostate __err = ios_base::iostate(ios_base::goodbit); 263 try 264 { 265 if (!this->fail()) 266 { 267 // _GLIBCXX_RESOLVE_LIB_DEFECTS 268 // 136. seekp, seekg setting wrong streams? 269 const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir, 270 ios_base::out); 271 272 // 129. Need error indication from seekp() and seekg() 273 if (__p == pos_type(off_type(-1))) 274 __err |= ios_base::failbit; 275 } 276 } 277 catch(...) 278 { this->_M_setstate(ios_base::badbit); } 279 if (__err) 280 this->setstate(__err); 281 return *this; 282 } 283 284 template<typename _CharT, typename _Traits> 285 basic_ostream<_CharT, _Traits>& 286 operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s) 287 { 288 if (!__s) 289 __out.setstate(ios_base::badbit); 290 else 291 { 292 // _GLIBCXX_RESOLVE_LIB_DEFECTS 293 // 167. Improper use of traits_type::length() 294 const size_t __clen = char_traits<char>::length(__s); 295 _CharT* __ws = 0; 296 try 297 { 298 __ws = new _CharT[__clen]; 299 for (size_t __i = 0; __i < __clen; ++__i) 300 __ws[__i] = __out.widen(__s[__i]); 301 } 302 catch(...) 303 { 304 delete [] __ws; 305 __out._M_setstate(ios_base::badbit); 306 return __out; 307 } 308 309 try 310 { 311 __ostream_insert(__out, __ws, __clen); 312 delete [] __ws; 313 } 314 catch(...) 315 { 316 delete [] __ws; 317 __throw_exception_again; 318 } 319 } 320 return __out; 321 } 322 323 // Inhibit implicit instantiations for required instantiations, 324 // which are defined via explicit instantiations elsewhere. 325 // NB: This syntax is a GNU extension. 326#if _GLIBCXX_EXTERN_TEMPLATE 327 extern template class basic_ostream<char>; 328 extern template ostream& endl(ostream&); 329 extern template ostream& ends(ostream&); 330 extern template ostream& flush(ostream&); 331 extern template ostream& operator<<(ostream&, char); 332 extern template ostream& operator<<(ostream&, unsigned char); 333 extern template ostream& operator<<(ostream&, signed char); 334 extern template ostream& operator<<(ostream&, const char*); 335 extern template ostream& operator<<(ostream&, const unsigned char*); 336 extern template ostream& operator<<(ostream&, const signed char*); 337 338 extern template ostream& ostream::_M_insert(long); 339 extern template ostream& ostream::_M_insert(unsigned long); 340 extern template ostream& ostream::_M_insert(bool); 341#ifdef _GLIBCXX_USE_LONG_LONG 342 extern template ostream& ostream::_M_insert(long long); 343 extern template ostream& ostream::_M_insert(unsigned long long); 344#endif 345 extern template ostream& ostream::_M_insert(double); 346 extern template ostream& ostream::_M_insert(long double); 347 extern template ostream& ostream::_M_insert(const void*); 348 349#ifdef _GLIBCXX_USE_WCHAR_T 350 extern template class basic_ostream<wchar_t>; 351 extern template wostream& endl(wostream&); 352 extern template wostream& ends(wostream&); 353 extern template wostream& flush(wostream&); 354 extern template wostream& operator<<(wostream&, wchar_t); 355 extern template wostream& operator<<(wostream&, char); 356 extern template wostream& operator<<(wostream&, const wchar_t*); 357 extern template wostream& operator<<(wostream&, const char*); 358 359 extern template wostream& wostream::_M_insert(long); 360 extern template wostream& wostream::_M_insert(unsigned long); 361 extern template wostream& wostream::_M_insert(bool); 362#ifdef _GLIBCXX_USE_LONG_LONG 363 extern template wostream& wostream::_M_insert(long long); 364 extern template wostream& wostream::_M_insert(unsigned long long); 365#endif 366 extern template wostream& wostream::_M_insert(double); 367 extern template wostream& wostream::_M_insert(long double); 368 extern template wostream& wostream::_M_insert(const void*); 369#endif 370#endif 371 372_GLIBCXX_END_NAMESPACE 373 374#endif 375