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  • Committer: Bazaar Package Importer
  • Author(s): Cristian Greco
  • Date: 2008-07-02 10:46:21 UTC
  • Revision ID: james.westby@ubuntu.com-20080702104621-jzx3pfke9lkcxfxn
Tags: upstream-0.13.1
Import upstream version 0.13.1

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include/libtorrent/io.hpp
 
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/*
 
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Copyright (c) 2003, 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_IO_HPP_INCLUDED
 
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#define TORRENT_IO_HPP_INCLUDED
 
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#include <boost/cstdint.hpp>
 
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#include <string>
 
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namespace libtorrent
 
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{
 
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        namespace detail
 
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        {
 
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                template <class T> struct type {};
 
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                // reads an integer from a byte stream
 
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                // in big endian byte order and converts
 
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                // it to native endianess
 
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                template <class T, class InIt>
 
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                inline T read_impl(InIt& start, type<T>)
 
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                {
 
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                        T ret = 0;
 
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                        for (int i = 0; i < (int)sizeof(T); ++i)
 
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                        {
 
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                                ret <<= 8;
 
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                                ret |= static_cast<unsigned char>(*start);
 
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                                ++start;
 
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                        }
 
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                        return ret;
 
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                }
 
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                template <class T, class OutIt>
 
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                inline void write_impl(T val, OutIt& start)
 
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                {
 
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                        for (int i = (int)sizeof(T)-1; i >= 0; --i)
 
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                        {
 
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                                *start = static_cast<unsigned char>((val >> (i * 8)) & 0xff);
 
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                                ++start;
 
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                        }
 
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                }
 
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                // -- adaptors
 
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                template <class InIt>
 
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                boost::int64_t read_int64(InIt& start)
 
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                { return read_impl(start, type<boost::int64_t>()); }
 
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                template <class InIt>
 
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                boost::uint64_t read_uint64(InIt& start)
 
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                { return read_impl(start, type<boost::uint64_t>()); }
 
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                template <class InIt>
 
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                boost::uint32_t read_uint32(InIt& start)
 
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                { return read_impl(start, type<boost::uint32_t>()); }
 
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                template <class InIt>
 
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                boost::int32_t read_int32(InIt& start)
 
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                { return read_impl(start, type<boost::int32_t>()); }
 
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                template <class InIt>
 
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                boost::int16_t read_int16(InIt& start)
 
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                { return read_impl(start, type<boost::int16_t>()); }
 
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                template <class InIt>
 
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                boost::uint16_t read_uint16(InIt& start)
 
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                { return read_impl(start, type<boost::uint16_t>()); }
 
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                template <class InIt>
 
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                boost::int8_t read_int8(InIt& start)
 
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                { return read_impl(start, type<boost::int8_t>()); }
 
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                template <class InIt>
 
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                boost::uint8_t read_uint8(InIt& start)
 
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                { return read_impl(start, type<boost::uint8_t>()); }
 
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                template <class OutIt>
 
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                void write_uint64(boost::uint64_t val, OutIt& start)
 
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                { write_impl(val, start); }
 
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                template <class OutIt>
 
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                void write_int64(boost::int64_t val, OutIt& start)
 
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                { write_impl(val, start); }
 
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                template <class OutIt>
 
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                void write_uint32(boost::uint32_t val, OutIt& start)
 
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                { write_impl(val, start); }
 
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                template <class OutIt>
 
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                void write_int32(boost::int32_t val, OutIt& start)
 
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                { write_impl(val, start); }
 
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                template <class OutIt>
 
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                void write_uint16(boost::uint16_t val, OutIt& start)
 
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                { write_impl(val, start); }
 
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                template <class OutIt>
 
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                void write_int16(boost::int16_t val, OutIt& start)
 
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                { write_impl(val, start); }
 
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                template <class OutIt>
 
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                void write_uint8(boost::uint8_t val, OutIt& start)
 
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                { write_impl(val, start); }
 
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                template <class OutIt>
 
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                void write_int8(boost::int8_t val, OutIt& start)
 
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                { write_impl(val, start); }
 
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                inline void write_string(std::string const& str, char*& start)
 
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                {
 
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                        std::copy(str.begin(), str.end(), start);
 
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                        start += str.size();
 
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                }
 
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                template <class OutIt>
 
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                void write_string(std::string const& str, OutIt& start)
 
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                {
 
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                        std::copy(str.begin(), str.end(), start);
 
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                }
 
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        }
 
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}
 
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#endif // TORRENT_IO_HPP_INCLUDED