RAUL 0.8.0

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log.hpp

    00001 /* This file is part of Raul.
    00002  * Copyright (C) 2009 David Robillard <http://drobilla.net>
    00003  *
    00004  * Raul is free software; you can redistribute it and/or modify it under the
    00005  * terms of the GNU General Public License as published by the Free Software
    00006  * Foundation; either version 2 of the License, or (at your option) any later
    00007  * version.
    00008  *
    00009  * Raul is distributed in the hope that it will be useful, but WITHOUT ANY
    00010  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00011  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
    00012  *
    00013  * You should have received a copy of the GNU General Public License along
    00014  * with this program; if not, write to the Free Software Foundation, Inc.,
    00015  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
    00016  */
    00017
    00018 #ifndef RAUL_LOG_HPP
    00019 #define RAUL_LOG_HPP
    00020
    00021 #include <iostream>
    00022 #include <sstream>
    00023 #include <string>
    00024
    00025 namespace Raul {
    00026
    00030 class LogBuffer : public std::streambuf
    00031 {
    00032 public:
    00033     enum Colour {
    00034         DEFAULT = 0,
    00035         RED = 31,
    00036         GREEN,
    00037         YELLOW,
    00038         BLUE,
    00039         MAGENTA,
    00040         CYAN,
    00041         WHITE
    00042     };
    00043
    00044     LogBuffer(const char* prefix="", Colour colour=DEFAULT)
    00045         : _prefix(prefix)
    00046         , _colour(colour)
    00047         , _out(std::cout)
    00048     {}
    00049
    00051     std::string colour(Colour c);
    00052
    00054     std::string plain();
    00055
    00056 protected:
    00057     int_type overflow(int_type c) {
    00058         if (c == '\n')
    00059             emit();
    00060         else if (c != traits_type::eof())
    00061             _line += c;
    00062
    00063         return c;
    00064     }
    00065
    00066     int sync() {
    00067         if (!_line.empty())
    00068             emit();
    00069         return 0;
    00070     }
    00071
    00072 private:
    00073     void emit();
    00074
    00075     const char*   _prefix;
    00076     Colour        _colour;
    00077     std::string   _line;
    00078     std::ostream& _out;
    00079 };
    00080
    00081
    00082 class NullBuffer : public std::streambuf
    00083 {
    00084 protected:
    00085     int_type overflow(int_type c) { return c; }
    00086     int      sync()               { return 0; }
    00087 };
    00088
    00089
    00090 extern std::ostream info;
    00091 extern std::ostream warn;
    00092 extern std::ostream error;
    00093 extern std::ostream debug;
    00094
    00095
    00096 } // namespace Raul
    00097
    00098 #endif // RAUL_LOG_HPP