| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. 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. For additional information regarding |
| * copyright in this work, please see the NOTICE file in the top level |
| * directory of this distribution. |
| */ |
| package org.apache.abdera2.common.xml; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import javax.xml.stream.XMLInputFactory; |
| import javax.xml.stream.XMLStreamReader; |
| |
| import org.apache.abdera2.common.io.CharsetSniffingInputStream; |
| import org.apache.abdera2.common.io.PeekAheadInputStream; |
| |
| |
| /** |
| * Will attempt to autodetect the character encoding from the XML Stream This will preserve the BOM if it exists. |
| */ |
| public class XMLStreamSniffingInputStream extends CharsetSniffingInputStream { |
| |
| public XMLStreamSniffingInputStream(InputStream in) { |
| super(in); |
| } |
| |
| @Override |
| protected String detectEncoding() throws IOException { |
| String charset = super.detectEncoding(); |
| PeekAheadInputStream pin = getInternal(); |
| try { |
| byte[] p = new byte[200]; |
| pin.peek(p); |
| XMLStreamReader xmlreader = |
| XMLInputFactory.newInstance().createXMLStreamReader(new java.io.ByteArrayInputStream(p)); |
| String cs = xmlreader.getCharacterEncodingScheme(); |
| if (cs != null) |
| charset = cs; |
| } catch (Exception e) { |
| } |
| return charset; |
| } |
| |
| } |