Added boost header

test/external/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