mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-15 20:24:07 +00:00
92 lines
3.6 KiB
C++
92 lines
3.6 KiB
C++
//
|
|
// DTDHandler.h
|
|
//
|
|
// Library: XML
|
|
// Package: SAX
|
|
// Module: SAX
|
|
//
|
|
// SAX DTDHandler Interface.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#ifndef SAX_DTDHandler_INCLUDED
|
|
#define SAX_DTDHandler_INCLUDED
|
|
|
|
|
|
#include "Poco/XML/XML.h"
|
|
#include "Poco/XML/XMLString.h"
|
|
|
|
|
|
namespace Poco
|
|
{
|
|
namespace XML
|
|
{
|
|
|
|
|
|
class XML_API DTDHandler
|
|
/// If a SAX application needs information about notations and unparsed entities,
|
|
/// then the application implements this interface and registers an instance with the
|
|
/// SAX parser using the parser's setDTDHandler method. The parser uses the instance
|
|
/// to report notation and unparsed entity declarations to the application.
|
|
///
|
|
/// Note that this interface includes only those DTD events that the XML recommendation
|
|
/// requires processors to report: notation and unparsed entity declarations.
|
|
///
|
|
/// The SAX parser may report these events in any order, regardless of the order in
|
|
/// which the notations and unparsed entities were declared; however, all DTD events
|
|
/// must be reported after the document handler's startDocument event, and before the first
|
|
/// startElement event. (If the LexicalHandler is used, these events must also be reported before the endDTD event.)
|
|
///
|
|
/// It is up to the application to store the information for future use (perhaps in a hash table or
|
|
/// object tree). If the application encounters attributes of type "NOTATION", "ENTITY", or "ENTITIES",
|
|
/// it can use the information that it obtained through this interface to find the entity and/or notation
|
|
/// corresponding with the attribute value.
|
|
{
|
|
public:
|
|
virtual void notationDecl(const XMLString & name, const XMLString * publicId, const XMLString * systemId) = 0;
|
|
/// Receive notification of a notation declaration event.
|
|
///
|
|
/// It is up to the application to record the notation for later reference,
|
|
/// if necessary; notations may appear as attribute values and in unparsed
|
|
/// entity declarations, and are sometime used with processing instruction
|
|
/// target names.
|
|
///
|
|
/// At least one of publicId and systemId must be non-null. If a system identifier
|
|
/// is present, and it is a URL, the SAX parser must resolve it fully before passing
|
|
/// it to the application through this event.
|
|
///
|
|
/// There is no guarantee that the notation declaration will be reported before any
|
|
/// unparsed entities that use it.
|
|
///
|
|
/// Note that publicId and systemId maybe null, therefore we pass a pointer rather than a reference.
|
|
|
|
virtual void
|
|
unparsedEntityDecl(const XMLString & name, const XMLString * publicId, const XMLString & systemId, const XMLString & notationName)
|
|
= 0;
|
|
/// Receive notification of an unparsed entity declaration event.
|
|
///
|
|
/// Note that the notation name corresponds to a notation reported by the
|
|
/// notationDecl event. It is up to the application to record the entity for
|
|
/// later reference, if necessary; unparsed entities may appear as attribute values.
|
|
///
|
|
/// If the system identifier is a URL, the parser must resolve it fully before
|
|
/// passing it to the application.
|
|
///
|
|
/// Note that publicId maybe null, therefore we pass a pointer rather than a reference.
|
|
|
|
protected:
|
|
virtual ~DTDHandler();
|
|
};
|
|
|
|
|
|
}
|
|
} // namespace Poco::XML
|
|
|
|
|
|
#endif // SAX_DTDHandler_INCLUDED
|