110 lines
3.8 KiB
C++
110 lines
3.8 KiB
C++
/*
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Copyright (c) 2003-2018, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TORRENT_HEX_HPP_INCLUDED
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#define TORRENT_HEX_HPP_INCLUDED
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#include "libtorrent/config.hpp"
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#include "libtorrent/error_code.hpp"
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#include "libtorrent/span.hpp"
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#include <string>
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namespace libtorrent {
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namespace aux {
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TORRENT_EXTRA_EXPORT int hex_to_int(char in);
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TORRENT_EXTRA_EXPORT bool is_hex(span<char const> in);
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#if TORRENT_ABI_VERSION == 1
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#define TORRENT_CONDITIONAL_EXPORT TORRENT_EXPORT
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#else
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#define TORRENT_CONDITIONAL_EXPORT TORRENT_EXTRA_EXPORT
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#endif
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// The overload taking a ``std::string`` converts (binary) the string ``s``
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// to hexadecimal representation and returns it.
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// The overload taking a ``char const*`` and a length converts the binary
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// buffer [``in``, ``in`` + len) to hexadecimal and prints it to the buffer
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// ``out``. The caller is responsible for making sure the buffer pointed to
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// by ``out`` is large enough, i.e. has at least len * 2 bytes of space.
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TORRENT_CONDITIONAL_EXPORT std::string to_hex(span<char const> s);
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TORRENT_CONDITIONAL_EXPORT void to_hex(span<char const> in, char* out);
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TORRENT_CONDITIONAL_EXPORT void to_hex(char const* in, int const len, char* out);
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// converts the buffer [``in``, ``in`` + len) from hexadecimal to
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// binary. The binary output is written to the buffer pointed to
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// by ``out``. The caller is responsible for making sure the buffer
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// at ``out`` has enough space for the result to be written to, i.e.
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// (len + 1) / 2 bytes.
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TORRENT_CONDITIONAL_EXPORT bool from_hex(span<char const> in, char* out);
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#undef TORRENT_CONDITIONAL_EXPORT
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}
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#if TORRENT_ABI_VERSION == 1
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#ifdef _MSC_VER
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#pragma warning(push, 1)
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// warning C4996: X: was declared deprecated
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#pragma warning( disable : 4996 )
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#endif
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#if defined __GNUC__
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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#endif
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// deprecated in 1.2
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TORRENT_DEPRECATED
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inline void to_hex(char const* in, int len, char* out)
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{ aux::to_hex({in, len}, out); }
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TORRENT_DEPRECATED
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inline std::string to_hex(std::string const& s)
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{ return aux::to_hex(s); }
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TORRENT_DEPRECATED
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inline bool from_hex(char const *in, int len, char* out)
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{ return aux::from_hex({in, len}, out); }
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#if defined __GNUC__
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#pragma GCC diagnostic pop
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#endif
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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#endif
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}
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#endif // TORRENT_HEX_HPP_INCLUDED
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