/*

 * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.org.apache.xalan.internal.xsltc.trax;

import java.util.Vector;

import javax.xml.stream.Location;

import javax.xml.stream.XMLReporter;

import javax.xml.stream.XMLStreamException;

import org.xml.sax.Attributes;

import org.xml.sax.Locator;

import org.xml.sax.SAXException;

import org.xml.sax.SAXParseException;

import org.xml.sax.ext.LexicalHandler;

import org.xml.sax.helpers.DefaultHandler;

public abstract class SAX2StAXBaseWriter extends DefaultHandler

                implements

                        LexicalHandler {

        protected boolean isCDATA;

        protected StringBuffer CDATABuffer;

        protected Vector namespaces;

        protected Locator docLocator;

        protected XMLReporter reporter;

        public SAX2StAXBaseWriter() {

        }

        public SAX2StAXBaseWriter(XMLReporter reporter) {

                this.reporter = reporter;

        }

        public void setXMLReporter(XMLReporter reporter) {

                this.reporter = reporter;

        }

        public void setDocumentLocator(Locator locator) {

                this.docLocator = locator;

        }

        public Location getCurrentLocation() {

                if (docLocator != null) {

                        return new SAXLocation(docLocator);

                } else {

                        return null;

                }

        }

        public void error(SAXParseException e) throws SAXException {

                reportException("ERROR", e);

        }

        public void fatalError(SAXParseException e) throws SAXException {

                reportException("FATAL", e);

        }

        public void warning(SAXParseException e) throws SAXException {

                reportException("WARNING", e);

        }

        public void startDocument() throws SAXException {

                    namespaces = new Vector(2);

        }

        public void endDocument() throws SAXException {

                namespaces = null;

        }

        public void startElement(String uri, String localName, String qName,

                        Attributes attributes) throws SAXException {

                        namespaces = null;

        }

        public void endElement(String uri, String localName, String qName)

                        throws SAXException {

                namespaces = null;

        }

        public void startPrefixMapping(String prefix, String uri)

                        throws SAXException {

                if (prefix == null) {

                        prefix = "";

                } else if (prefix.equals("xml")) {

                        return;

                }

                if (namespaces == null) {

                    namespaces = new Vector(2);

                }

                namespaces.addElement(prefix);

                namespaces.addElement(uri);

        }

        public void endPrefixMapping(String prefix) throws SAXException {

        }

        public void startCDATA() throws SAXException {

                isCDATA = true;

                if (CDATABuffer == null) {

                        CDATABuffer = new StringBuffer();

                } else {

                        CDATABuffer.setLength(0);

                }

        }

        public void characters(char[] ch, int start, int length)

                        throws SAXException {

                if (isCDATA) {

                        CDATABuffer.append(ch, start, length);

                }

        }

        public void endCDATA() throws SAXException {

                isCDATA = false;

                CDATABuffer.setLength(0);

        }

        public void comment(char[] ch, int start, int length) throws SAXException {

        }

        public void endDTD() throws SAXException {

        }

        public void endEntity(String name) throws SAXException {

        }

        public void startDTD(String name, String publicId, String systemId)

                        throws SAXException {

        }

        public void startEntity(String name) throws SAXException {

        }

        /**

         * Used to report a {@link SAXException}to the {@link XMLReporter}

         * registered with this handler.

         */

        protected void reportException(String type, SAXException e)

                        throws SAXException {

                if (reporter != null) {

                        try {

                                reporter.report(e.getMessage(), type, e, getCurrentLocation());

                        } catch (XMLStreamException e1) {

                                throw new SAXException(e1);

                        }

                }

        }

        /**

         * Parses an XML qualified name, and places the resulting prefix and local

         * name in the provided String array.

         *

         * @param qName The qualified name to parse.

         * @param results An array where parse results will be placed. The prefix

         *            will be placed at <code>results[0]</code>, and the local

         *            part at <code>results[1]</code>

         */

        public static final void parseQName(String qName, String[] results) {

                String prefix, local;

                int idx = qName.indexOf(':');

                if (idx >= 0) {

                        prefix = qName.substring(0, idx);

                        local = qName.substring(idx + 1);

                } else {

                        prefix = "";

                        local = qName;

                }

                results[0] = prefix;

                results[1] = local;

        }

        /**

         * {@Link Location}implementation used to expose details from a SAX

         * {@link Locator}.

         *

         * @author christian

         */

        private static final class SAXLocation implements Location {

                private int lineNumber;

                private int columnNumber;

                private String publicId;

                private String systemId;

                private SAXLocation(Locator locator) {

                        lineNumber = locator.getLineNumber();

                        columnNumber = locator.getColumnNumber();

                        publicId = locator.getPublicId();

                        systemId = locator.getSystemId();

                }

                public int getLineNumber() {

                        return lineNumber;

                }

                public int getColumnNumber() {

                        return columnNumber;

                }

                public int getCharacterOffset() {

                        return -1;

                }

                public String getPublicId() {

                        return publicId;

                }

                public String getSystemId() {

                        return systemId;

                }

        }

}