Added boost header

test/external/boost/archive/iterators/transform_width.hpp

@@ -0,0 +1,170 @@
+#ifndef BOOST_ARCHIVE_ITERATORS_TRANSFORM_WIDTH_HPP
+#define BOOST_ARCHIVE_ITERATORS_TRANSFORM_WIDTH_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
+// transform_width.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.
+
+// iterator which takes elements of x bits and returns elements of y bits.
+// used to change streams of 8 bit characters into streams of 6 bit characters.
+// and vice-versa for implementing base64 encodeing/decoding. Be very careful
+// when using and end iterator.  end is only reliable detected when the input
+// stream length is some common multiple of x and y.  E.G. Base64 6 bit
+// character and 8 bit bytes. Lowest common multiple is 24 => 4 6 bit characters
+// or 3 8 bit characters
+
+#include <algorithm>
+
+#include <boost/config.hpp> // for BOOST_DEDUCED_TYPENAME & PTFO
+#include <boost/serialization/pfto.hpp>
+
+#include <boost/iterator/iterator_adaptor.hpp>
+#include <boost/iterator/iterator_traits.hpp>
+
+namespace boost { 
+namespace archive {
+namespace iterators {
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// class used by text archives to translate char strings to wchar_t
+// strings of the currently selected locale
+template<
+    class Base, 
+    int BitsOut, 
+    int BitsIn, 
+    class CharType = BOOST_DEDUCED_TYPENAME boost::iterator_value<Base>::type // output character
+>
+class transform_width : 
+    public boost::iterator_adaptor<
+        transform_width<Base, BitsOut, BitsIn, CharType>,
+        Base,
+        CharType,
+        single_pass_traversal_tag,
+        CharType
+    >
+{
+    friend class boost::iterator_core_access;
+    typedef BOOST_DEDUCED_TYPENAME boost::iterator_adaptor<
+        transform_width<Base, BitsOut, BitsIn, CharType>,
+        Base,
+        CharType,
+        single_pass_traversal_tag,
+        CharType
+    > super_t;
+
+    typedef transform_width<Base, BitsOut, BitsIn, CharType> this_t;
+    typedef BOOST_DEDUCED_TYPENAME iterator_value<Base>::type base_value_type;
+
+    CharType fill();
+
+    CharType dereference_impl(){
+        if(! m_full){
+            m_current_value = fill();
+            m_full = true;
+        }
+        return m_current_value;
+    }
+
+    CharType dereference() const {
+        return const_cast<this_t *>(this)->dereference_impl();
+    }
+
+    // test for iterator equality
+    bool equal(const this_t & rhs) const {
+        return
+            this->base_reference() == rhs.base_reference();
+        ;
+    }
+
+    void increment(){
+        m_displacement += BitsOut;
+
+        while(m_displacement >= BitsIn){
+            m_displacement -= BitsIn;
+            if(0 == m_displacement)
+                m_bufferfull = false;
+            if(! m_bufferfull){
+                // note: suspect that this is not invoked for borland
+                ++(this->base_reference());
+            }
+        }
+        m_full = false;
+    }
+
+    CharType m_current_value;
+    // number of bits left in current input character buffer
+    unsigned int m_displacement;
+    base_value_type m_buffer;
+    // flag to current output character is ready - just used to save time
+    bool m_full;
+    // flag to indicate that m_buffer has data
+    bool m_bufferfull;
+
+public:
+    // make composible buy using templated constructor
+    template<class T>
+    transform_width(BOOST_PFTO_WRAPPER(T) start) : 
+        super_t(Base(BOOST_MAKE_PFTO_WRAPPER(static_cast< T >(start)))),
+        m_displacement(0),
+        m_full(false),
+        m_bufferfull(false)
+    {}
+    // intel 7.1 doesn't like default copy constructor
+    transform_width(const transform_width & rhs) : 
+        super_t(rhs.base_reference()),
+        m_current_value(rhs.m_current_value),
+        m_displacement(rhs.m_displacement),
+        m_buffer(rhs.m_buffer),
+        m_full(rhs.m_full),
+        m_bufferfull(rhs.m_bufferfull)
+    {}
+};
+
+template<class Base, int BitsOut, int BitsIn, class CharType>
+CharType transform_width<Base, BitsOut, BitsIn, CharType>::fill(){
+    CharType retval = 0;
+    unsigned int missing_bits = BitsOut;
+    for(;;){
+        unsigned int bcount;
+        if(! m_bufferfull){
+            m_buffer = * this->base_reference();
+            m_bufferfull = true;
+            bcount = BitsIn;
+        }
+        else
+            bcount = BitsIn - m_displacement;
+        unsigned int i = (std::min)(bcount, missing_bits);
+        // shift interesting bits to least significant position
+        unsigned int j = m_buffer >> (bcount - i);
+        // strip off uninteresting bits
+        // (note presumption of two's complement arithmetic)
+        j &= ~(-(1 << i));
+        // append then interesting bits to the output value
+        retval <<= i;
+        retval |= j;
+        missing_bits -= i;
+        if(0 == missing_bits)
+            break;
+        // note: suspect that this is not invoked for borland 5.51
+        ++(this->base_reference());
+        m_bufferfull = false;
+    }
+    return retval;
+}
+
+} // namespace iterators
+} // namespace archive
+} // namespace boost
+
+#endif // BOOST_ARCHIVE_ITERATORS_TRANSFORM_WIDTH_HPP