new trunk (base for 1.5)

windows build only

XML/src/NamePool.cpp

@@ -0,0 +1,148 @@
+//
+// NamePool.cpp
+//
+// $Id: //poco/1.4/XML/src/NamePool.cpp#1 $
+//
+// Library: XML
+// Package: XML
+// Module:  NamePool
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+// 
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+
+#include "Poco/XML/NamePool.h"
+#include "Poco/Exception.h"
+
+
+namespace Poco {
+namespace XML {
+
+
+class NamePoolItem
+{
+public:
+	NamePoolItem(): _used(false)
+	{
+	}
+	
+	~NamePoolItem()
+	{
+	}
+	
+	bool set(const XMLString& qname, const XMLString& namespaceURI, const XMLString& localName)
+	{
+		if (!_used)
+		{
+			_name.assign(qname, namespaceURI, localName);
+			_used = true;
+			return true;
+		}
+		else return _name.equals(qname, namespaceURI, localName);
+	}
+	
+	const Name& get() const
+	{
+		return _name;
+	}
+	
+	bool used() const
+	{
+		return _used;
+	}
+	
+private:
+	Name _name;
+	bool _used;
+};
+
+
+NamePool::NamePool(unsigned long size): 
+	_size(size),
+	_rc(1)
+{
+	poco_assert (size > 1);
+
+	_pItems = new NamePoolItem[size];
+}
+
+
+NamePool::~NamePool()
+{
+	delete [] _pItems;
+}
+
+
+void NamePool::duplicate()
+{
+	++_rc;
+}
+
+
+void NamePool::release()
+{
+	if (--_rc == 0)
+		delete this;
+}
+
+
+const Name& NamePool::insert(const XMLString& qname, const XMLString& namespaceURI, const XMLString& localName)
+{
+	unsigned long i = 0;
+	unsigned long n = hash(qname, namespaceURI, localName) % _size;
+
+	while (!_pItems[n].set(qname, namespaceURI, localName) && i++ < _size) 
+		n = (n + 1) % _size;
+		
+	if (i > _size) throw Poco::PoolOverflowException("XML name pool");
+
+	return _pItems[n].get();
+}
+
+
+const Name& NamePool::insert(const Name& name)
+{
+	return insert(name.qname(), name.namespaceURI(), name.localName());
+}
+
+
+unsigned long NamePool::hash(const XMLString& qname, const XMLString& namespaceURI, const XMLString& localName)
+{
+	unsigned long h = 0;
+	XMLString::const_iterator it  = qname.begin();
+	XMLString::const_iterator end = qname.end();
+	while (it != end) h = (h << 5) + h + (unsigned long) *it++;
+	it =  namespaceURI.begin();
+	end = namespaceURI.end();
+	while (it != end) h = (h << 5) + h + (unsigned long) *it++;
+	it  = localName.begin();
+	end = localName.end();
+	while (it != end) h = (h << 5) + h + (unsigned long) *it++;
+	return h;
+}
+
+
+} } // namespace Poco::XML