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/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache\@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation, and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.ibm.com . For more information
* on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
/**
* $Log$
* Revision 1.1 1999/11/09 01:07:43 twl
* Initial revision
*
* Revision 1.2 1999/11/08 20:44:54 rahul
* Swat for adding in Product name and CVS comment log variable.
*
*/
#ifndef ATTRIBUTELIST_HPP
#define ATTRIBUTELIST_HPP
#include <util/XML4CDefs.hpp>
/**
* Interface for an element's attribute specifications.
*
* The SAX parser implements this interface and passes an instance
* to the SAX application as the second argument of each startElement
* event.
*
* The instance provided will return valid results only during the
* scope of the startElement invocation (to save it for future
* use, the application must make a copy: the AttributeListImpl
* helper class provides a convenient constructor for doing so).
*
* An AttributeList includes only attributes that have been
* specified or defaulted: #IMPLIED attributes will not be included.
*
* There are two ways for the SAX application to obtain information
* from the AttributeList. First, it can iterate through the entire
* list:
*
* <pre>
* public void startElement (String name, AttributeList atts) {
* for (int i = 0; i < atts.getLength(); i++) {
* String name = atts.getName(i);
* String type = atts.getType(i);
* String value = atts.getValue(i);
* [...]
* }
* }
* </pre>
*
* (Note that the result of getLength() will be zero if there
* are no attributes.)
*
* As an alternative, the application can request the value or
* type of specific attributes:
*
* <pre>
* public void startElement (String name, AttributeList atts) {
* String identifier = atts.getValue("id");
* String label = atts.getValue("label");
* [...]
* }
* </pre>
*
* The AttributeListImpl helper class provides a convenience
* implementation for use by parser or application writers.
*
* $Log$
* Revision 1.1 1999/11/09 01:07:43 twl
* Initial revision
*
* Revision 1.2 1999/11/08 20:44:54 rahul
* Swat for adding in Product name and CVS comment log variable.
*
* @see DocumentHandler#startElement
* @see AttributeListImpl#AttributeListImpl
*/
class SAX_EXPORT AttributeList
{
public:
// -----------------------------------------------------------------------
// Constructors and Destructor
// -----------------------------------------------------------------------
/** @name Constructors and Destructor */
//@{
/** Default constructor */
AttributeList()
{
}
/** Destructor */
virtual ~AttributeList()
{
}
//@}
/** @name The virtual attribute list interface */
//@{
/**
* Return the number of attributes in this list.
*
* The SAX parser may provide attributes in any
* arbitrary order, regardless of the order in which they were
* declared or specified. The number of attributes may be
* zero.
*
* @return The number of attributes in the list.
*/
virtual unsigned int getLength() const = 0;
/**
* Return the name of an attribute in this list (by position).
*
* The names must be unique: the SAX parser shall not include the
* same attribute twice. Attributes without values (those declared
* #IMPLIED without a value specified in the start tag) will be
* omitted from the list.
*
* If the attribute name has a namespace prefix, the prefix
* will still be attached.
*
* @param index The index of the attribute in the list (starting at 0).
* @return The name of the indexed attribute, or null
* if the index is out of range.
* @see #getLength
*/
virtual const XMLCh* getName(const unsigned int index) const = 0;
/**
* Return the type of an attribute in the list (by position).
*
* The attribute type is one of the strings "CDATA", "ID",
* "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES",
* or "NOTATION" (always in upper case).
*
* If the parser has not read a declaration for the attribute,
* or if the parser does not report attribute types, then it must
* return the value "CDATA" as stated in the XML 1.0 Recommentation
* (clause 3.3.3, "Attribute-Value Normalization").
*
* For an enumerated attribute that is not a notation, the
* parser will report the type as "NMTOKEN".
*
* @param index The index of the attribute in the list (starting at 0).
* @return The attribute type as a string, or
* null if the index is out of range.
* @see #getLength
* @see #getType(String)
*/
virtual const XMLCh* getType(const unsigned int index) const = 0;
/**
* Return the value of an attribute in the list (by position).
*
* If the attribute value is a list of tokens (IDREFS,
* ENTITIES, or NMTOKENS), the tokens will be concatenated
* into a single string separated by whitespace.
*
* @param index The index of the attribute in the list (starting at 0).
* @return The attribute value as a string, or
* null if the index is out of range.
* @see #getLength
* @see #getValue(String)
*/
virtual const XMLCh* getValue(const unsigned int index) const = 0;
/**
* Return the type of an attribute in the list (by name).
*
* The return value is the same as the return value for
* getType(int).
*
* If the attribute name has a namespace prefix in the document,
* the application must include the prefix here.
*
* @param name The name of the attribute.
* @return The attribute type as a string, or null if no
* such attribute exists.
* @see #getType(int)
*/
virtual const XMLCh* getType(const XMLCh* const name) const = 0;
/**
* Return the value of an attribute in the list (by name).
*
* The return value is the same as the return value for
* getValue(int).
*
* If the attribute name has a namespace prefix in the document,
* the application must include the prefix here.
*
* @param name The name of the attribute in the list.
* @return The attribute value as a string, or null if
* no such attribute exists.
* @see #getValue(int)
*/
virtual const XMLCh* getValue(const XMLCh* const name) const = 0;
//@}
private :
/** @name Constructors and operators */
//@{
/** Copy constructor */
AttributeList(const AttributeList&);
/** Assignment operator */
void operator=(const AttributeList&);
//@}
};
#endif