00001 /* Copyright © 2005-2007 Roger Leigh <rleigh@debian.org> 00002 * 00003 * schroot is free software; you can redistribute it and/or modify it 00004 * under the terms of the GNU General Public License as published by 00005 * the Free Software Foundation; either version 2 of the License, or 00006 * (at your option) any later version. 00007 * 00008 * schroot is distributed in the hope that it will be useful, but 00009 * WITHOUT ANY WARRANTY; without even the implied warranty of 00010 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00011 * General Public License for more details. 00012 * 00013 * You should have received a copy of the GNU General Public License 00014 * along with this program; if not, write to the Free Software 00015 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 00016 * MA 02111-1307 USA 00017 * 00018 *********************************************************************/ 00019 00020 #ifndef SBUILD_NULL_H 00021 #define SBUILD_NULL_H 00022 00023 #include <map> 00024 #include <stdexcept> 00025 #include <string> 00026 00027 namespace sbuild 00028 { 00029 00034 class null 00035 { 00036 public: 00044 template <class charT, class traits> 00045 friend 00046 std::basic_ostream<charT,traits>& 00047 operator << (std::basic_ostream<charT,traits>& stream, 00048 null const& rhs) 00049 { 00050 return stream << null_output(); 00051 } 00052 00053 private: 00059 static const char * 00060 null_output (); 00061 }; 00062 00063 } 00064 00065 #endif /* SBUILD_NULL_H */ 00066 00067 /* 00068 * Local Variables: 00069 * mode:C++ 00070 * End: 00071 */