2 // Copyright (c) 2013-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7 // This is a derivative work based on Zlib, copyright below:
9 Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
11 This software is provided 'as-is', without any express or implied
12 warranty. In no event will the authors be held liable for any damages
13 arising from the use of this software.
15 Permission is granted to anyone to use this software for any purpose,
16 including commercial applications, and to alter it and redistribute it
17 freely, subject to the following restrictions:
19 1. The origin of this software must not be misrepresented; you must not
20 claim that you wrote the original software. If you use this software
21 in a product, an acknowledgment in the product documentation would be
22 appreciated but is not required.
23 2. Altered source versions must be plainly marked as such, and must not be
24 misrepresented as being the original software.
25 3. This notice may not be removed or altered from any source distribution.
27 Jean-loup Gailly Mark Adler
28 jloup@gzip.org madler@alumni.caltech.edu
30 The data format used by the zlib library is described by RFCs (Request for
31 Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950
32 (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format).
35 #ifndef BEAST_ZLIB_IMPL_ERROR_IPP
36 #define BEAST_ZLIB_IMPL_ERROR_IPP
38 #include <beast/core/error.hpp>
39 #include <type_traits>
44 struct is_error_code_enum<beast::zlib::error>
46 static bool const value = true;
55 class zlib_error_category : public error_category
59 name() const noexcept override
65 message(int ev) const override
67 switch(static_cast<error>(ev))
69 case error::need_buffers: return "need buffers";
70 case error::end_of_stream: return "end of stream";
71 case error::stream_error: return "stream error";
73 case error::invalid_block_type: return "invalid block type";
74 case error::invalid_stored_length: return "invalid stored block length";
75 case error::too_many_symbols: return "too many symbols";
76 case error::invalid_code_lenths: return "invalid code lengths";
77 case error::invalid_bit_length_repeat: return "invalid bit length repeat";
78 case error::missing_eob: return "missing end of block code";
79 case error::invalid_literal_length: return "invalid literal/length code";
80 case error::invalid_distance_code: return "invalid distance code";
81 case error::invalid_distance: return "invalid distance";
83 case error::over_subscribed_length: return "over-subscribed length";
84 case error::incomplete_length_set: return "incomplete length set";
93 default_error_condition(int ev) const noexcept override
95 return error_condition{ev, *this};
100 error_condition const& condition
101 ) const noexcept override
103 return condition.value() == ev &&
104 &condition.category() == this;
108 equivalent(error_code const& error, int ev) const noexcept override
110 return error.value() == ev &&
111 &error.category() == this;
116 error_category const&
119 static zlib_error_category const cat{};
127 make_error_code(error ev)
130 static_cast<std::underlying_type<error>::type>(ev),
131 detail::get_error_category()};