| /** |
| * |
| */ |
| package org.apache.taverna.scufl2.translator.scufl; |
| /* |
| * |
| * 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. |
| * |
| */ |
| |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.charset.Charset; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import javax.xml.bind.JAXBException; |
| |
| import org.apache.taverna.scufl2.api.common.Scufl2Tools; |
| import org.apache.taverna.scufl2.api.container.WorkflowBundle; |
| import org.apache.taverna.scufl2.api.io.ReaderException; |
| import org.apache.taverna.scufl2.api.io.WorkflowBundleReader; |
| |
| |
| /** |
| * @author alanrw |
| */ |
| public class ScuflReader implements WorkflowBundleReader { |
| public static final String APPLICATION_VND_TAVERNA_SCUFL_XML = "application/vnd.taverna.scufl+xml"; |
| private static final Set<String> SCUFL_TYPES = new HashSet<String>( |
| Arrays.asList(new String[] { APPLICATION_VND_TAVERNA_SCUFL_XML })); |
| |
| private Scufl2Tools scufl2Tools = new Scufl2Tools(); |
| private ScuflParser parser; |
| |
| @Override |
| public Set<String> getMediaTypes() { |
| return SCUFL_TYPES; |
| } |
| |
| @Override |
| public WorkflowBundle readBundle(File bundleFile, String mediaType) |
| throws ReaderException, IOException { |
| try { |
| WorkflowBundle bundle = getParser().parseScufl(bundleFile); |
| scufl2Tools.setParents(bundle); |
| return bundle; |
| } catch (JAXBException e) { |
| if (e.getCause() instanceof IOException) { |
| IOException ioException = (IOException) e.getCause(); |
| throw ioException; |
| } |
| throw new ReaderException("Can't parse SCUFL " + bundleFile, e); |
| } |
| } |
| |
| @Override |
| public WorkflowBundle readBundle(InputStream inputStream, String mediaType) |
| throws ReaderException, IOException { |
| try { |
| WorkflowBundle bundle = getParser().parseScufl(inputStream); |
| scufl2Tools.setParents(bundle); |
| return bundle; |
| } catch (JAXBException e) { |
| if (e.getCause() instanceof IOException) { |
| IOException ioException = (IOException) e.getCause(); |
| throw ioException; |
| } |
| throw new ReaderException("Can't parse SCUFL", e); |
| } |
| } |
| |
| public void setParser(ScuflParser parser) { |
| this.parser = parser; |
| } |
| |
| public ScuflParser getParser() throws JAXBException { |
| if (parser == null) |
| parser = new ScuflParser(); |
| return parser; |
| } |
| |
| @Override |
| public String guessMediaTypeForSignature(byte[] firstBytes) { |
| if (firstBytes.length < 100) |
| return null; |
| // FIXME: Does not deal with potential UTF-16 encoding |
| |
| // Latin 1 can deal with nasty bytes in binaries |
| Charset latin1 = Charset.forName("ISO-8859-1"); |
| String asLatin1 = new String(firstBytes, latin1); |
| if (!asLatin1.contains("http://org.embl.ebi.escience/xscufl/0.1alpha")) |
| return null; |
| // Good enough - XML is hard to check on so few bytes |
| return APPLICATION_VND_TAVERNA_SCUFL_XML; |
| } |
| } |