mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-18 04:12:19 +00:00
97 lines
3.7 KiB
C++
97 lines
3.7 KiB
C++
//
|
|
// DeclHandler.h
|
|
//
|
|
// Library: XML
|
|
// Package: SAX
|
|
// Module: SAX
|
|
//
|
|
// SAX2-ext DeclHandler Interface.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#ifndef SAX_DeclHandler_INCLUDED
|
|
#define SAX_DeclHandler_INCLUDED
|
|
|
|
|
|
#include "Poco/XML/XML.h"
|
|
#include "Poco/XML/XMLString.h"
|
|
|
|
|
|
namespace Poco
|
|
{
|
|
namespace XML
|
|
{
|
|
|
|
|
|
class XML_API DeclHandler
|
|
/// This is an optional extension handler for SAX2 to provide information
|
|
/// about DTD declarations in an XML document. XML
|
|
/// readers are not required to support this handler, and this handler is
|
|
/// not included in the core SAX2 distribution.
|
|
///
|
|
/// Note that data-related DTD declarations (unparsed entities and notations)
|
|
/// are already reported through the DTDHandler interface.
|
|
/// If you are using the declaration handler together with a lexical handler,
|
|
/// all of the events will occur between the startDTD and the endDTD events.
|
|
/// To set the DeclHandler for an XML reader, use the setProperty method
|
|
/// with the propertyId "http://xml.org/sax/properties/declaration-handler".
|
|
/// If the reader does not support declaration events, it will throw a
|
|
/// SAXNotRecognizedException or a SAXNotSupportedException when you attempt to
|
|
/// register the handler.
|
|
{
|
|
public:
|
|
virtual void
|
|
attributeDecl(const XMLString & eName, const XMLString & aName, const XMLString * valueDefault, const XMLString * value)
|
|
= 0;
|
|
/// Report an attribute type declaration.
|
|
///
|
|
/// Only the effective (first) declaration for an attribute will be reported.
|
|
/// The type will be one of the strings "CDATA", "ID", "IDREF", "IDREFS",
|
|
/// "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", a parenthesized token group
|
|
/// with the separator "|" and all whitespace removed, or the word "NOTATION"
|
|
/// followed by a space followed by a parenthesized token group with all whitespace
|
|
/// removed.
|
|
///
|
|
/// The value will be the value as reported to applications, appropriately normalized
|
|
/// and with entity and character references expanded.
|
|
|
|
virtual void elementDecl(const XMLString & name, const XMLString & model) = 0;
|
|
/// Report an element type declaration.
|
|
///
|
|
/// The content model will consist of the string "EMPTY", the string "ANY", or a
|
|
/// parenthesised group, optionally followed by an occurrence indicator. The model
|
|
/// will be normalized so that all parameter entities are fully resolved and all
|
|
/// whitespace is removed,and will include the enclosing parentheses. Other
|
|
/// normalization (such as removing redundant parentheses or simplifying occurrence
|
|
/// indicators) is at the discretion of the parser.
|
|
|
|
virtual void externalEntityDecl(const XMLString & name, const XMLString * publicId, const XMLString & systemId) = 0;
|
|
/// Report an external entity declaration.
|
|
///
|
|
/// Only the effective (first) declaration for each entity will be reported.
|
|
///
|
|
/// If the system identifier is a URL, the parser must resolve it fully before
|
|
/// passing it to the application.
|
|
|
|
virtual void internalEntityDecl(const XMLString & name, const XMLString & value) = 0;
|
|
/// Report an internal entity declaration.
|
|
///
|
|
/// Only the effective (first) declaration for each entity will be reported. All
|
|
/// parameter entities in the value will be expanded, but general entities will not.
|
|
|
|
protected:
|
|
virtual ~DeclHandler();
|
|
};
|
|
|
|
|
|
}
|
|
} // namespace Poco::XML
|
|
|
|
|
|
#endif // SAX_DeclHandler_INCLUDED
|