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123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
//
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// Attributes.h
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//
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// $Id: //poco/1.4/XML/include/Poco/SAX/Attributes.h#1 $
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//
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// Library: XML
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// Package: SAX
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// Module: SAX
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//
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// SAX2 Attributes Interface.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef SAX_Attributes_INCLUDED
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#define SAX_Attributes_INCLUDED
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#include "Poco/XML/XML.h"
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#include "Poco/XML/XMLString.h"
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namespace Poco {
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namespace XML {
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class XML_API Attributes
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/// Interface for a list of XML attributes.
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/// This interface allows access to a list of attributes in three different ways:
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/// 1.by attribute index;
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/// 2.by Namespace-qualified name; or
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/// 3.by qualified (prefixed) name.
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///
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/// The list will not contain attributes that were declared #IMPLIED but not
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/// specified in the start tag. It will also not contain
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/// attributes used as Namespace declarations (xmlns*) unless the
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/// http://xml.org/sax/features/namespace-prefixes
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/// feature is set to true (it is false by default).
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///
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/// If the namespace-prefixes feature (see above) is false, access by
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/// qualified name may not be available; if the
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/// http://xml.org/sax/features/namespaces feature is false, access by
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/// Namespace-qualified names may not be available.
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/// This interface replaces the now-deprecated SAX1 AttributeList interface,
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/// which does not contain Namespace support. In
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/// addition to Namespace support, it adds the getIndex methods (below).
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/// The order of attributes in the list is unspecified, and will vary from
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/// implementation to implementation.
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{
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public:
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virtual int getIndex(const XMLString& name) const = 0;
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/// Look up the index of an attribute by a qualified name.
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virtual int getIndex(const XMLString& namespaceURI, const XMLString& localName) const = 0;
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/// Look up the index of an attribute by a namspace name.
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virtual int getLength() const = 0;
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/// Return the number of attributes in the list.
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///
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/// Once you know the number of attributes, you can iterate through the list.
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virtual const XMLString& getLocalName(int i) const = 0;
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/// Look up a local attribute name by index.
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virtual const XMLString& getQName(int i) const = 0;
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/// Look up a qualified attribute name by index.
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virtual const XMLString& getType(int i) const = 0;
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/// Look up an attribute type by index.
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///
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/// The attribute type is one of the strings "CDATA", "ID", "IDREF", "IDREFS", "NMTOKEN",
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/// "NMTOKENS", "ENTITY", "ENTITIES", or "NOTATION" (always in upper case).
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///
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/// If the parser has not read a declaration for the attribute, or if the parser does not
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/// report attribute types, then it must return the value "CDATA" as stated in the XML 1.0
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/// Recommendation (clause 3.3.3, "Attribute-Value Normalization").
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///
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/// For an enumerated attribute that is not a notation, the parser will report the type
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/// as "NMTOKEN".
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virtual const XMLString& getType(const XMLString& qname) const = 0;
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/// Look up an attribute type by a qualified name.
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///
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/// See getType(int) for a description of the possible types.
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virtual const XMLString& getType(const XMLString& namespaceURI, const XMLString& localName) const = 0;
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/// Look up an attribute type by a namespace name.
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///
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/// See getType(int) for a description of the possible types.
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virtual const XMLString& getValue(int i) const = 0;
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/// Look up an attribute value by index.
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///
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/// If the attribute value is a list of tokens (IDREFS, ENTITIES, or NMTOKENS), the tokens
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/// will be concatenated into a single string with each token separated by a single space.
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virtual const XMLString& getValue(const XMLString& qname) const = 0;
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/// Look up an attribute value by a qualified name.
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///
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/// See getValue(int) for a description of the possible values.
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virtual const XMLString& getValue(const XMLString& uri, const XMLString& localName) const = 0;
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/// Look up an attribute value by a namespace name.
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///
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/// See getValue(int) for a description of the possible values.
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virtual const XMLString& getURI(int i) const = 0;
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/// Look up a namespace URI by index.
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protected:
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virtual ~Attributes();
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};
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} } // namespace Poco::XML
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#endif // SAX_Attributes_INCLUDED
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