png++  0.2.1
error.hpp
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1 /*
2  * Copyright (C) 2007,2008 Alex Shulgin
3  *
4  * This file is part of png++ the C++ wrapper for libpng. PNG++ is free
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31 #ifndef PNGPP_ERROR_HPP_INCLUDED
32 #define PNGPP_ERROR_HPP_INCLUDED
33 
34 #include <stdexcept>
35 #include <cerrno>
36 #include <cstdlib>
37 
38 namespace png
39 {
40 
45  class error
46  : public std::runtime_error
47  {
48  public:
52  explicit error(std::string const& message)
53  : std::runtime_error(message)
54  {
55  }
56  };
57 
64  class std_error
65  : public std::runtime_error
66  {
67  public:
76  explicit std_error(std::string const& message, int error = errno)
77  : std::runtime_error((message + ": ") + strerror(error))
78  {
79  }
80  };
81 
82 } // namespace png
83 
84 #endif // PNGPP_ERROR_HPP_INCLUDED