[pclasses-cvs] pclasses2/include/pclasses Buffer.h,NONE,1.1 Makefile.am,1.14,1.15

[Christian P. <cp...@us...>]

Update of /cvsroot/pclasses/pclasses2/include/pclasses
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv23915/include/pclasses

Modified Files:
	Makefile.am 
Added Files:
	Buffer.h 
Log Message:
- Added P::Buffer<>


Index: Makefile.am
===================================================================
RCS file: /cvsroot/pclasses/pclasses2/include/pclasses/Makefile.am,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -d -r1.14 -r1.15
--- Makefile.am	6 May 2005 15:28:23 -0000	1.14
+++ Makefile.am	3 Jun 2005 09:47:42 -0000	1.15
@@ -18,7 +18,7 @@
 	CircularQueue.h List.h NonCopyable.h Phoenix.h CoreMutex.h Factory.h \
 	SharingContext.h Time.h Date.h DateTime.h TimeSpan.h Callback.h Signal.h \
 	CallbackN1.h CallbackN2.h CallbackN3.h CallbackN4.h \
-	Trace.h PropertyMap.h Export.h pclasses-config.h
+	Trace.h PropertyMap.h Export.h Buffer.h pclasses-config.h
 
 all: all_callbacks
 

--- NEW FILE: Buffer.h ---
/***************************************************************************
 *   Copyright (C) 2005 by Christian Prochnow                              *
 *   cp...@se...                                                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU Library 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 Library General Public     *
 *   License along with this program; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef P_Buffer_h
#define P_Buffer_h

#include <pclasses/Algorithm.h>
#include <pclasses/Exception.h>

namespace P {

template <class Type>
class Buffer {
	public:
		Buffer(size_t size = 1024, bool autoResize = true)
		: _autoResize(autoResize),
		  _buffer((Type*)new char[sizeof(Type) * size]),
		  _size(size), _count(0)
		{
		}

		Buffer(const Buffer& b)
		: _autoResize(b._autoResize),
		  _buffer((Type*)new char[sizeof(Type) * b._size]),
		  _size(b._size), _count(b._count)
		{
			copy_construct(_buffer, b._buffer, _count);
		}

		~Buffer() throw()
		{
			clear();
			delete[] (char*)_buffer;
		}

		void swap(Buffer& b) throw()
		{
			bool autoResize = b._autoResize;
			Type* buffer = b._buffer;
			size_t size  = b._size;
			size_t count = b._count;
			b._autoResize = _autoResize;
			b._buffer = _buffer;
			b._size   = _size;
			b._count  = _count;
			_autoResize = autoResize;
			_buffer = buffer;
			_size   = size;
			_count  = count;
		}

		void clear() throw()
		{
			destruct(_buffer, _count);
			_count = 0;
		}

		inline size_t size() const throw()
		{ return _count; }

		void resize(size_t sz) throw(OverrunError)
		{
			if(_count > sz)
				throw OverrunError("Buffer overrun", P_SOURCEINFO);

			Type* newBuffer = (Type*)new char[sizeof(Type) * sz];
			copy_construct(newBuffer, _buffer, _count);
			destruct(_buffer, _count);
			delete[] (char*)_buffer;
			_buffer = newBuffer;
			_size   = sz;
		}

		inline size_t capacity() const throw()
		{ return _size; }

		inline bool empty() const throw()
		{ return _count == 0; }

		inline Type* data() throw()
		{ return _buffer; }

		void pop(size_t count) throw(UnderrunError)
		{
			if(_count >= count)
			{
				destruct(_buffer, count);
				copy(_buffer, _buffer + count, _count - count);
				_count -= count;
				return;
			}

			throw UnderrunError("Buffer underrun", P_SOURCEINFO);
		}

		void push(const Type* buff, size_t count) throw(OverrunError)
		{
			if(_size < _count + count)
			{
				if(!_autoResize)
					throw OverrunError("Buffer overrun", P_SOURCEINFO);

				resize(_count + count);
			}

			copy_construct(_buffer + _count, buff, count);
			_count += count;
		}

		inline Buffer& operator=(const Buffer& b)
		{
			Buffer(b).swap(*this);
			return *this;
		}

	private:
		bool     _autoResize;
		Type*    _buffer;
		size_t   _size;
		size_t   _count;
};

template <class Type>
inline void swap(Buffer<Type>& a, Buffer<Type>& b) throw()
{ a.swap(b); }


} // !namespace P

#endif