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Diffstat (limited to '3rdParty/Boost/src/boost/archive/iterators/binary_from_base64.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/archive/iterators/binary_from_base64.hpp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/archive/iterators/binary_from_base64.hpp b/3rdParty/Boost/src/boost/archive/iterators/binary_from_base64.hpp new file mode 100644 index 0000000..60f23f3 --- /dev/null +++ b/3rdParty/Boost/src/boost/archive/iterators/binary_from_base64.hpp @@ -0,0 +1,120 @@ +#ifndef BOOST_ARCHIVE_ITERATORS_BINARY_FROM_BASE64_HPP +#define BOOST_ARCHIVE_ITERATORS_BINARY_FROM_BASE64_HPP + +// MS compatible compilers support #pragma once +#if defined(_MSC_VER) && (_MSC_VER >= 1020) +# pragma once +#endif + +/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 +// binary_from_base64.hpp + +// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . +// Use, modification and distribution is subject to the Boost Software +// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) + +// See http://www.boost.org for updates, documentation, and revision history. + +#include <boost/assert.hpp> + +#include <boost/config.hpp> // for BOOST_DEDUCED_TYPENAME +#include <boost/serialization/throw_exception.hpp> +#include <boost/serialization/pfto.hpp> +#include <boost/static_assert.hpp> + +#include <boost/iterator/transform_iterator.hpp> +#include <boost/archive/iterators/dataflow_exception.hpp> + +namespace boost { +namespace archive { +namespace iterators { + +/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 +// convert base64 characters to binary data + +namespace detail { + +template<class CharType> +struct to_6_bit { + typedef CharType result_type; + CharType operator()(CharType t) const{ + const signed char lookup_table[] = { + -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, + -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, + -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63, + 52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1, + -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14, + 15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1, + -1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40, + 41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1 + }; + // metrowerks trips this assertion - how come? + #if ! defined(__MWERKS__) + BOOST_STATIC_ASSERT(128 == sizeof(lookup_table)); + #endif + signed char value = -1; + if((unsigned)t <= 127) + value = lookup_table[(unsigned)t]; + if(-1 == value) + boost::serialization::throw_exception( + dataflow_exception(dataflow_exception::invalid_base64_character) + ); + return value; + } +}; + +} // namespace detail + +// note: what we would like to do is +// template<class Base, class CharType = BOOST_DEDUCED_TYPENAME Base::value_type> +// typedef transform_iterator< +// from_6_bit<CharType>, +// transform_width<Base, 6, sizeof(Base::value_type) * 8, CharType> +// > base64_from_binary; +// but C++ won't accept this. Rather than using a "type generator" and +// using a different syntax, make a derivation which should be equivalent. +// +// Another issue addressed here is that the transform_iterator doesn't have +// a templated constructor. This makes it incompatible with the dataflow +// ideal. This is also addressed here. + +template< + class Base, + class CharType = BOOST_DEDUCED_TYPENAME boost::iterator_value<Base>::type +> +class binary_from_base64 : public + transform_iterator< + detail::to_6_bit<CharType>, + Base + > +{ + friend class boost::iterator_core_access; + typedef transform_iterator< + detail::to_6_bit<CharType>, + Base + > super_t; +public: + // make composible buy using templated constructor + template<class T> + binary_from_base64(BOOST_PFTO_WRAPPER(T) start) : + super_t( + Base(BOOST_MAKE_PFTO_WRAPPER(static_cast< T >(start))), + detail::to_6_bit<CharType>() + ) + {} + // intel 7.1 doesn't like default copy constructor + binary_from_base64(const binary_from_base64 & rhs) : + super_t( + Base(rhs.base_reference()), + detail::to_6_bit<CharType>() + ) + {} +// binary_from_base64(){}; +}; + +} // namespace iterators +} // namespace archive +} // namespace boost + +#endif // BOOST_ARCHIVE_ITERATORS_BINARY_FROM_BASE64_HPP |