| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache |
| * XMLBeans", nor may "Apache" appear in their name, without prior |
| * written permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 2000-2003 BEA Systems |
| * Inc., <http://www.bea.com/>. For more information on the Apache Software |
| * Foundation, please see <http://www.apache.org/>. |
| */ |
| |
| package org.apache.xmlbeans.impl.common; |
| |
| import java.io.Reader; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.UnsupportedEncodingException; |
| import java.io.IOException; |
| |
| public class XmlEncodingSniffer |
| { |
| private String _xmlencoding; |
| private String _javaencoding; |
| private InputStream _stream; |
| private Reader _reader; |
| |
| /** |
| * Sniffs the given XML stream for encoding information. |
| * |
| * After a sniffer is constructed, it can return either a stream |
| * (which is a buffered stream wrapper of the original) or a reader |
| * (which applies the proper encoding). |
| * |
| * @param stream The stream to sniff |
| * @param encodingOverride The XML (IANA) name for the overriding encoding |
| * @throws IOException |
| * @throws UnsupportedEncodingException |
| */ |
| public XmlEncodingSniffer(InputStream stream, String encodingOverride) |
| throws IOException, UnsupportedEncodingException |
| { |
| _stream = stream; |
| |
| if (encodingOverride != null) |
| _xmlencoding = EncodingMap.getJava2IANAMapping(encodingOverride); |
| |
| if (_xmlencoding == null) |
| _xmlencoding = encodingOverride; |
| |
| if (_xmlencoding == null) |
| { |
| SniffedXmlInputStream sniffed = new SniffedXmlInputStream(_stream); |
| _xmlencoding = sniffed.getXmlEncoding(); |
| assert(_xmlencoding != null); |
| _stream = sniffed; |
| } |
| |
| _javaencoding = EncodingMap.getIANA2JavaMapping(_xmlencoding); |
| |
| // we allow you to use Java's encoding names in XML even though you're |
| // not supposed to. |
| |
| if (_javaencoding == null) |
| _javaencoding = _xmlencoding; |
| } |
| |
| /** |
| * Sniffs the given XML stream for encoding information. |
| * |
| * After a sniffer is constructed, it can return either a reader |
| * (which is a buffered stream wrapper of the original) or a stream |
| * (which applies the proper encoding). |
| * |
| * @param reader The reader to sniff |
| * @param encodingDefault The Java name for the default encoding to apply, UTF-8 if null. |
| * @throws IOException |
| * @throws UnsupportedEncodingException |
| */ |
| public XmlEncodingSniffer(Reader reader, String encodingDefault) |
| throws IOException, UnsupportedEncodingException |
| { |
| if (encodingDefault == null) |
| encodingDefault = "UTF-8"; |
| |
| SniffedXmlReader sniffedReader = new SniffedXmlReader(reader); |
| _reader = sniffedReader; |
| _xmlencoding = sniffedReader.getXmlEncoding(); |
| |
| if (_xmlencoding == null) |
| { |
| _xmlencoding = EncodingMap.getJava2IANAMapping(encodingDefault); |
| if (_xmlencoding != null) |
| _javaencoding = encodingDefault; |
| else |
| _xmlencoding = encodingDefault; |
| } |
| |
| if (_xmlencoding == null) |
| _xmlencoding = "UTF-8"; |
| |
| // we allow you to use Java's encoding names in XML even though you're |
| // not supposed to. |
| |
| _javaencoding = EncodingMap.getIANA2JavaMapping(_xmlencoding); |
| |
| if (_javaencoding == null) |
| _javaencoding = _xmlencoding; |
| } |
| |
| public String getXmlEncoding() |
| { |
| return _xmlencoding; |
| } |
| |
| public String getJavaEncoding() |
| { |
| return _javaencoding; |
| } |
| |
| public InputStream getStream() |
| throws UnsupportedEncodingException |
| { |
| if (_stream != null) |
| { |
| InputStream is = _stream; |
| _stream = null; |
| return is; |
| } |
| |
| if (_reader != null) |
| { |
| InputStream is = new ReaderInputStream( _reader, _javaencoding ); |
| _reader = null; |
| return is; |
| } |
| |
| return null; |
| } |
| |
| |
| public Reader getReader ( ) |
| throws UnsupportedEncodingException |
| { |
| if (_reader != null) |
| { |
| Reader reader = _reader; |
| _reader = null; |
| return reader; |
| } |
| |
| if (_stream != null) |
| { |
| Reader reader = new InputStreamReader( _stream, _javaencoding ); |
| _stream = null; |
| return reader; |
| } |
| |
| return null; |
| } |
| } |