1 files changed, 111 insertions, 0 deletions
diff --git a/libktorrent/util/bitset.cpp b/libktorrent/util/bitset.cpp
new file mode 100644
index 0000000..6139e01
--- /dev/null
+++ b/libktorrent/util/bitset.cpp
@@ -0,0 +1,111 @@
+/***************************************************************************
+ *   Copyright (C) 2005 by Joris Guisson                                   *
+ *   [email protected]                                               *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.             *
+ ***************************************************************************/
+#include <algorithm>
+#include "bitset.h"
+#include <string.h>
+
+namespace bt
+{
+	BitSet BitSet::null;
+
+	BitSet::BitSet(Uint32 num_bits) : num_bits(num_bits),data(0)
+	{
+		num_bytes = (num_bits / 8) + ((num_bits % 8 > 0) ? 1 : 0);
+		data = new Uint8[num_bytes];
+		std::fill(data,data+num_bytes,0x00);
+		num_on = 0;
+	}
+
+	BitSet::BitSet(const Uint8* d,Uint32 num_bits)  : num_bits(num_bits),data(0)
+	{
+		num_bytes = (num_bits / 8) + ((num_bits % 8 > 0) ? 1 : 0);
+		data = new Uint8[num_bytes];
+		memcpy(data,d,num_bytes);
+		num_on = 0;
+		Uint32 i = 0;
+		while (i < num_bits)
+		{
+			if (get(i))
+				num_on++;
+			i++;
+		}
+	}
+	
+	BitSet::BitSet(const BitSet & bs) : num_bits(bs.num_bits),num_bytes(bs.num_bytes),data(0),num_on(bs.num_on)
+	{
+		data = new Uint8[num_bytes];
+		std::copy(bs.data,bs.data+num_bytes,data);
+	}
+			
+	BitSet::~BitSet()
+	{
+		delete [] data;
+	}
+
+	
+
+	BitSet & BitSet::operator = (const BitSet & bs)
+	{
+		if (data)
+			delete [] data;
+		num_bytes = bs.num_bytes;
+		num_bits = bs.num_bits;
+		data = new Uint8[num_bytes];
+		std::copy(bs.data,bs.data+num_bytes,data);
+		num_on = bs.num_on;
+		return *this;
+	}
+	
+	void BitSet::setAll(bool on)
+	{
+		std::fill(data,data+num_bytes,on ? 0xFF : 0x00);
+		num_on = on ? num_bits : 0;
+	}
+
+	void BitSet::clear()
+	{
+		setAll(false);
+	}
+
+	void BitSet::orBitSet(const BitSet & other)
+	{
+		Uint32 i = 0;
+		while (i < num_bits)
+		{
+			bool val = get(i) || other.get(i);
+			set(i,val);
+			i++;
+		}
+	}
+
+	bool BitSet::allOn() const
+	{
+		return num_on == num_bits;
+	}
+
+	bool BitSet::operator == (const BitSet & bs)
+	{
+		if (this->getNumBits() != bs.getNumBits())
+			return false;
+
+		return memcmp(data,bs.data,num_bytes) == 0;
+	}
+}
+