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+/* ====================================================================
+ 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.poi.util;
+
+import javax.xml.stream.XMLInputFactory;
+
+
+/**
+ * Provides handy methods for working with StAX parsers and readers
+ */
+public final class StaxHelper {
+ private static final POILogger logger = POILogFactory.getLogger(StaxHelper.class);
+
+ private StaxHelper() {}
+
+ /**
+ * Creates a new StAX XMLInputFactory, with sensible defaults
+ */
+ public static XMLInputFactory newXMLInputFactory() {
+ XMLInputFactory factory = XMLInputFactory.newFactory();
+ trySetProperty(factory, XMLInputFactory.IS_NAMESPACE_AWARE, true);
+ trySetProperty(factory, XMLInputFactory.IS_VALIDATING, false);
+ trySetProperty(factory, XMLInputFactory.SUPPORT_DTD, false);
+ trySetProperty(factory, XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES, false);
+ return factory;
+ }
+
+ private static void trySetProperty(XMLInputFactory factory, String feature, boolean flag) {
+ try {
+ factory.setProperty(feature, flag);
+ } catch (Exception e) {
+ logger.log(POILogger.WARN, "StAX Property unsupported", feature, e);
+ } catch (AbstractMethodError ame) {
+ logger.log(POILogger.WARN, "Cannot set StAX property because outdated StAX parser in classpath", feature, ame);
+ }
+ }
+}