source: NonGTP/Boost/boost/archive/iterators/base64_exception.hpp @ 857

Revision 857, 1.9 KB checked in by igarcia, 19 years ago (diff)
Line 
1#ifndef BOOST_ARCHIVE_ITERATORS_BASE64_EXCEPTION_HPP
2#define BOOST_ARCHIVE_ITERATORS_BASE64_EXCEPTION_HPP
3
4// MS compatible compilers support #pragma once
5#if defined(_MSC_VER) && (_MSC_VER >= 1020)
6# pragma once
7#endif
8
9/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
10// base64_exception.hpp:
11
12// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
13// Use, modification and distribution is subject to the Boost Software
14// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
15// http://www.boost.org/LICENSE_1_0.txt)
16
17//  See http://www.boost.org for updates, documentation, and revision history.
18
19#include <boost/config.hpp>
20#ifndef BOOST_NO_EXCEPTIONS
21#include <exception>
22
23#include <cassert>
24
25namespace boost {
26namespace archive {
27namespace iterators {
28
29//////////////////////////////////////////////////////////////////////
30// exceptions thrown by base64s
31//
32class base64_exception : public std::exception
33{
34public:
35    typedef enum {
36        invalid_code,       // attempt to encode a value > 6 bits
37        invalid_character,  // decode a value not in base64 char set
38        other_exception
39    } exception_code;
40    exception_code code;
41
42    base64_exception(exception_code c = other_exception) : code(c)
43    {}
44
45    virtual const char *what( ) const throw( )
46    {
47        const char *msg = "unknown exception code";
48        switch(code){
49        case invalid_code:
50            msg = "attempt to encode a value > 6 bits";
51            break;
52        case invalid_character:
53            msg = "attempt to decode a value not in base64 char set";
54            break;
55        default:
56            assert(false);
57            break;
58        }
59        return msg;
60    }
61};
62
63} // namespace iterators
64} // namespace archive
65} // namespace boost
66
67#endif //BOOST_NO_EXCEPTIONS
68#endif //BOOST_ARCHIVE_ITERATORS_ARCHIVE_EXCEPTION_HPP
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