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258 lines
11 KiB
Plaintext
258 lines
11 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Robert Sayre.
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*
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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interface nsISAXAttributes;
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/**
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* Receive notification of the logical content of a document.
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*
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* This is the main interface that most SAX applications implement: if
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* the application needs to be informed of basic parsing events, it
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* implements this interface and registers an instance with the SAX
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* parser. The parser uses the instance to report basic
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* document-related events like the start and end of elements and
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* character data.
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*
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* The order of events in this interface is very important, and
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* mirrors the order of information in the document itself. For
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* example, all of an element's content (character data, processing
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* instructions, and/or subelements) will appear, in order, between
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* the startElement event and the corresponding endElement event.
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*/
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[scriptable, uuid(2a99c757-dfee-4806-bff3-f721440412e0)]
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interface nsISAXContentHandler : nsISupports
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{
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/**
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* Receive notification of the beginning of a document.
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*
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* The SAX parser will invoke this method only once, before any
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* other event callbacks.
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*/
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void startDocument();
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/**
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* Receive notification of the end of a document.
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*
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* There is an apparent contradiction between the documentation for
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* this method and the documentation for ErrorHandler.fatalError().
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* Until this ambiguity is resolved in a future major release,
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* clients should make no assumptions about whether endDocument()
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* will or will not be invoked when the parser has reported a
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* fatalError() or thrown an exception.
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*
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* The SAX parser will invoke this method only once, and it will be
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* the last method invoked during the parse. The parser shall not
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* invoke this method until it has either abandoned parsing (because
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* of an unrecoverable error) or reached the end of input.
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*/
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void endDocument();
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/**
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* Receive notification of the beginning of an element.
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*
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* The Parser will invoke this method at the beginning of every
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* element in the XML document; there will be a corresponding
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* endElement event for every startElement event (even when the
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* element is empty). All of the element's content will be reported,
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* in order, before the corresponding endElement event.
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*
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* This event allows up to three name components for each element:
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*
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* 1.) the Namespace URI;
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* 2.) the local name; and
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* 3.) the qualified (prefixed) name.
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*
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* Any or all of these may be provided, depending on the values of
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* the http://xml.org/sax/features/namespaces and the
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* http://xml.org/sax/features/namespace-prefixes properties:
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*
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* The Namespace URI and local name are required when the namespaces
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* property is true (the default), and are optional when the
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* namespaces property is false (if one is specified, both must be);
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*
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* The qualified name is required when the namespace-prefixes
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* property is true, and is optional when the namespace-prefixes
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* property is false (the default).
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*
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* Note that the attribute list provided will contain only
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* attributes with explicit values (specified or defaulted):
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* #IMPLIED attributes will be omitted. The attribute list will
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* contain attributes used for Namespace declarations (xmlns*
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* attributes) only if the
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* http://xml.org/sax/features/namespace-prefixes property is true
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* (it is false by default, and support for a true value is
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* optional).
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*
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* @param uri the Namespace URI, or the empty string if the
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* element has no Namespace URI or if Namespace
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* processing is not being performed
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* @param localName the local name (without prefix), or the
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* empty string if Namespace processing is not being
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* performed
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* @param qName the qualified name (with prefix), or the
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* empty string if qualified names are not available
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* @param atts the attributes attached to the element. If
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* there are no attributes, it shall be an empty
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* SAXAttributes object. The value of this object after
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* startElement returns is undefined
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*/
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void startElement(in AString uri, in AString localName,
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in AString qName, in nsISAXAttributes attributes);
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/**
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* Receive notification of the end of an element.
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*
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* The SAX parser will invoke this method at the end of every
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* element in the XML document; there will be a corresponding
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* startElement event for every endElement event (even when the
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* element is empty).
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*
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* For information on the names, see startElement.
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*
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* @param uri the Namespace URI, or the empty string if the
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* element has no Namespace URI or if Namespace
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* processing is not being performed
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* @param localName the local name (without prefix), or the
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* empty string if Namespace processing is not being
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* performed
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* @param qName the qualified XML name (with prefix), or the
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* empty string if qualified names are not available
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*/
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void endElement(in AString uri, in AString localName, in AString qName);
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/**
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* Receive notification of character data.
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*
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* The Parser will call this method to report each chunk of
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* character data. SAX parsers may return all contiguous character
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* data in a single chunk, or they may split it into several chunks;
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* however, all of the characters in any single event must come from
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* the same external entity so that the Locator provides useful
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* information.
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*
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* Note that some parsers will report whitespace in element
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* content using the ignorableWhitespace method rather than this one
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* (validating parsers must do so).
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*
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* @param value the characters from the XML document
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*/
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void characters(in AString value);
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/**
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* Receive notification of a processing instruction.
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*
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* The Parser will invoke this method once for each processing
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* instruction found: note that processing instructions may occur
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* before or after the main document element.
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*
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* A SAX parser must never report an XML declaration (XML 1.0,
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* section 2.8) or a text declaration (XML 1.0, section 4.3.1) using
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* this method.
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*
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* @param target the processing instruction target
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* @param data the processing instruction data, or null if
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* none was supplied. The data does not include any
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* whitespace separating it from the target
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*/
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void processingInstruction(in AString target, in AString data);
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/**
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* Receive notification of ignorable whitespace in element content.
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*
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* Validating Parsers must use this method to report each chunk of
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* whitespace in element content (see the W3C XML 1.0
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* recommendation, section 2.10): non-validating parsers may also
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* use this method if they are capable of parsing and using content
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* models.
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*
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* SAX parsers may return all contiguous whitespace in a single
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* chunk, or they may split it into several chunks; however, all of
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* the characters in any single event must come from the same
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* external entity, so that the Locator provides useful information.
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*
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* @param whitespace the characters from the XML document
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*/
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void ignorableWhitespace(in AString whitespace);
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/**
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* Begin the scope of a prefix-URI Namespace mapping.
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*
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* The information from this event is not necessary for normal
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* Namespace processing: the SAX XML reader will automatically
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* replace prefixes for element and attribute names when the
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* http://xml.org/sax/features/namespaces feature is
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* true (the default).
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*
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* There are cases, however, when applications need to use prefixes
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* in character data or in attribute values, where they cannot
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* safely be expanded automatically; the start/endPrefixMapping
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* event supplies the information to the application to expand
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* prefixes in those contexts itself, if necessary.
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*
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* Note that start/endPrefixMapping events are not guaranteed to be
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* properly nested relative to each other: all startPrefixMapping
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* events will occur immediately before the corresponding
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* startElement event, and all endPrefixMapping events will occur
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* immediately after the corresponding endElement event, but their
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* order is not otherwise guaranteed.
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*
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* There should never be start/endPrefixMapping events for the
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* "xml" prefix, since it is predeclared and immutable.
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*
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* @param prefix The Namespace prefix being declared. An empty
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* string is used for the default element namespace,
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* which has no prefix.
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* @param uri The Namespace URI the prefix is mapped to.
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*/
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void startPrefixMapping(in AString prefix, in AString uri);
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/**
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* End the scope of a prefix-URI mapping.
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*
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* See startPrefixMapping for details. These events will always
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* occur immediately after the corresponding endElement event, but
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* the order of endPrefixMapping events is not otherwise guaranteed.
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*
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* @param prefix The prefix that was being mapped. This is the empty
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* string when a default mapping scope ends.
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*/
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void endPrefixMapping(in AString prefix);
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//XXX documentLocator
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};
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