| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.axiom.truth.xml; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.xml.namespace.QName; |
| import javax.xml.stream.XMLStreamException; |
| import javax.xml.stream.XMLStreamReader; |
| |
| import org.apache.axiom.truth.xml.spi.Event; |
| import org.apache.axiom.truth.xml.spi.Traverser; |
| import org.apache.axiom.truth.xml.spi.TraverserException; |
| import org.codehaus.stax2.DTDInfo; |
| |
| import com.google.common.base.Strings; |
| |
| final class StAXTraverser implements Traverser { |
| private final XMLStreamReader reader; |
| private int depth; |
| private boolean atStart; |
| |
| StAXTraverser(XMLStreamReader reader) { |
| this.reader = reader; |
| switch (reader.getEventType()) { |
| case XMLStreamReader.START_DOCUMENT: |
| depth = -1; |
| break; |
| case XMLStreamReader.START_ELEMENT: |
| depth = 0; |
| atStart = true; |
| break; |
| default: |
| throw new IllegalStateException("The reader must be positioned at a START_DOCUMENT or START_ELEMENT event"); |
| } |
| } |
| |
| @Override |
| public Event next() throws TraverserException { |
| try { |
| int event; |
| if (depth == 0) { |
| if (atStart) { |
| atStart = false; |
| event = XMLStreamReader.START_ELEMENT; |
| } else { |
| event = XMLStreamReader.END_DOCUMENT; |
| } |
| } else { |
| event = reader.hasNext() ? reader.next() : XMLStreamReader.END_DOCUMENT; |
| } |
| switch (event) { |
| case XMLStreamReader.DTD: |
| return Event.DOCUMENT_TYPE; |
| case XMLStreamReader.START_ELEMENT: |
| if (depth != -1) { |
| depth++; |
| } |
| return Event.START_ELEMENT; |
| case XMLStreamReader.END_ELEMENT: |
| if (depth != -1) { |
| depth--; |
| } |
| return Event.END_ELEMENT; |
| case XMLStreamReader.CHARACTERS: |
| return Event.TEXT; |
| case XMLStreamReader.SPACE: |
| return Event.WHITESPACE; |
| case XMLStreamReader.ENTITY_REFERENCE: |
| return Event.ENTITY_REFERENCE; |
| case XMLStreamReader.COMMENT: |
| return Event.COMMENT; |
| case XMLStreamReader.CDATA: |
| return Event.CDATA_SECTION; |
| case XMLStreamReader.PROCESSING_INSTRUCTION: |
| return Event.PROCESSING_INSTRUCTION; |
| case XMLStreamReader.END_DOCUMENT: |
| return null; |
| default: |
| throw new IllegalStateException(); |
| } |
| } catch (XMLStreamException ex) { |
| throw new TraverserException(ex); |
| } |
| } |
| |
| @Override |
| public String getRootName() { |
| return ((DTDInfo)reader).getDTDRootName(); |
| } |
| |
| @Override |
| public String getPublicId() { |
| return ((DTDInfo)reader).getDTDPublicId(); |
| } |
| |
| @Override |
| public String getSystemId() { |
| return ((DTDInfo)reader).getDTDSystemId(); |
| } |
| |
| @Override |
| public QName getQName() { |
| return reader.getName(); |
| } |
| |
| @Override |
| public Map<QName,String> getAttributes() { |
| int attributeCount = reader.getAttributeCount(); |
| if (attributeCount == 0) { |
| return null; |
| } else { |
| Map<QName,String> attributes = new HashMap<>(); |
| for (int i=0; i<attributeCount; i++) { |
| attributes.put(reader.getAttributeName(i), reader.getAttributeValue(i)); |
| } |
| return attributes; |
| } |
| } |
| |
| @Override |
| public Map<String,String> getNamespaces() { |
| int namespaceCount = reader.getNamespaceCount(); |
| if (namespaceCount == 0) { |
| return null; |
| } else { |
| Map<String,String> namespaces = new HashMap<>(); |
| for (int i=0; i<namespaceCount; i++) { |
| namespaces.put(Strings.nullToEmpty(reader.getNamespacePrefix(i)), Strings.nullToEmpty(reader.getNamespaceURI(i))); |
| } |
| return namespaces; |
| } |
| } |
| |
| @Override |
| public String getText() { |
| return reader.getText(); |
| } |
| |
| @Override |
| public String getEntityName() { |
| return reader.getLocalName(); |
| } |
| |
| @Override |
| public String getPITarget() { |
| return reader.getPITarget(); |
| } |
| |
| @Override |
| public String getPIData() { |
| return reader.getPIData(); |
| } |
| } |