repos/Represent/Binary.cpp

// Represent
//
// Douglas Thrift
//
// $Id$

#include "Binary.hpp"

Binary::Binary(const ext::String& string, bool signed_) : bytes(string.GetSize() / 8, 0)
{
        if (string.IsEmpty())
        {
                bytes.InsertLast(0);

                return;
        }

        size_t index(string.GetSize() % 8), offset(index);

        _rmforeach (ext::Vector<byte_t>, byte, bytes) _rfor (byte_t, bit, 0, 8) *byte |= (string[index++] == '1') << bit;

        if (offset != 0)
        {
                bytes.InsertLast(0);

                _rfor (byte_t, bit, offset, 8) bytes.Last() |= (signed_ && string[0] == '1') << bit;

                index = 0;

                _rfor (byte_t, bit, 0, offset) bytes.Last() |= (string[index++] == '1') << bit;
        }
}

Binary::operator ext::String() const
{
        ext::String string;

        _rforeach (ext::Vector<byte_t>, byte, bytes) _rfor (byte_t, bit, 0, 8) string.InsertLast(1 & *byte >> bit ? '1' : '0');

        return string;
}
Revision:	371
Committed:	2004-12-21T23:19:54-08:00 (20 years, 6 months ago) by douglas
File size:	829 byte(s)
Log Message:	Sleepy.
#	User	Rev	Content
1	douglas	362	// Represent
2			//
3			// Douglas Thrift
4			//
5			// $Id$
6
7	douglas	370	#include "Binary.hpp"
8	douglas	362
9	douglas	370	Binary::Binary(const ext::String& string, bool signed_) : bytes(string.GetSize() / 8, 0)
10	douglas	362	{
11	douglas	370	if (string.IsEmpty())
12			{
13			bytes.InsertLast(0);
14	douglas	362
15	douglas	370	return;
16	douglas	365	}
17
18	douglas	370	size_t index(string.GetSize() % 8), offset(index);
19	douglas	365
20	douglas	370	_rmforeach (ext::Vector<byte_t>, byte, bytes) _rfor (byte_t, bit, 0, 8) *byte \|= (string[index++] == '1') << bit;
21	douglas	362
22	douglas	370	if (offset != 0)
23			{
24			bytes.InsertLast(0);
25	douglas	362
26	douglas	370	_rfor (byte_t, bit, offset, 8) bytes.Last() \|= (signed_ && string[0] == '1') << bit;
27	douglas	362
28	douglas	370	index = 0;
29	douglas	365
30	douglas	370	_rfor (byte_t, bit, 0, offset) bytes.Last() \|= (string[index++] == '1') << bit;
31			}
32	douglas	365	}
33
34	douglas	370	Binary::operator ext::String() const
35	douglas	362	{
36	douglas	370	ext::String string;
37	douglas	362
38	douglas	370	_rforeach (ext::Vector<byte_t>, byte, bytes) _rfor (byte_t, bit, 0, 8) string.InsertLast(1 & *byte >> bit ? '1' : '0');
39	douglas	362
40			return string;
41			}