/*
* 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 com.hp.hpl.jena.shared.wg;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.zip.ZipFile;
import com.hp.hpl.jena.iri.*;
import com.hp.hpl.jena.shared.JenaException;
/**
* This class provides input streams that:
* 1: can be from a URL or from a zip
* 2: do not actually open until the first read
* @author Jeremy Carroll
*
*
*/
public class TestInputStreamFactory {
final IRIFactory iriFactory = IRIFactory.jenaImplementation();
final private IRI base;
final private IRI mapBase;
final private ZipFile zip;
final private String property;
private String createMe = "error";
/** @param baseDir A prefix of all URLs accessed through this factory.
* @param getBaseDir Replace the baseDir into getBaseDir before opening any URL.
*/
public TestInputStreamFactory(IRI baseDir, IRI getBaseDir) {
base = baseDir;
mapBase = getBaseDir;
zip = null;
property = null;
}
/** @param baseDir A prefix of all URLs accessed through this factory.
* @param zip To open a URL remove the baseDir from the URL and get the named file from the zip.
*/
public TestInputStreamFactory(IRI baseDir, ZipFile zip) {
base = baseDir;
mapBase = null;
this.zip = zip;
property = null;
}
/** @param baseDir A prefix of all URLs accessed through this factory.
* @param zip To open a URL remove the baseDir from the URL and get the named file from the zip.
*/
public TestInputStreamFactory(IRI baseDir, String propDir) {
createMe = "new TestInputStreamFactory(URI.create(\""
+baseDir.toString()
+"\"),\""+propDir+"\")";
base = baseDir;
mapBase = null;
this.zip = null;
property = propDir.endsWith("/") ? propDir : propDir + "/";
}
public IRI getBase() {
return base;
}
/**
* A lazy open. The I/O only starts, and resources
* are only allocated on first read.
* @param str The URI to open
*/
public InputStream open(String str) {
return open(iriFactory.create(str));
}
/**
* opens the file, and really does it - not a delayed
* lazy opening.
* @param str the URI to open
* @return null on some failures
* @throws IOException
*/
public InputStream fullyOpen(String str) throws IOException {
InputStream in = open(iriFactory.create(str));
if (in instanceof LazyInputStream
&& !((LazyInputStream) in).connect())
return null;
return in;
}
/**
* A lazy open. The I/O only starts, and resources
* are only allocated on first read.
* @param uri to be opened.
* @return the opened stream
*/
public InputStream open(IRI uri) {
return (InputStream) open(uri, true);
}
public boolean savable() {
return mapBase != null && mapBase.getScheme().equalsIgnoreCase("file");
}
public OutputStream openOutput(String str) {
OutputStream foo = (OutputStream) open(iriFactory.create(str), false);
// System.out.println(foo.toString());
return foo;
}
public String getCreationJava() {
return createMe;
}
private Object open(IRI uri, boolean in) {
IRI relative = uri.isAbsolute() ? base.relativize(uri,
IRIRelativize.CHILD) : uri;
if (relative.isAbsolute())
throw new IllegalArgumentException(
"This TestInputStreamFactory only knows about '" + base + "'.");
String relPath = relative.toString();
if ( relPath.length() - relPath.lastIndexOf('.') > 5 ) {
relPath = relPath + ".rdf";
relative = iriFactory.create(relPath);
}
if (mapBase != null) {
//System.out.println("LazyURL: " + relative + " " + mapBase);
try {
URL url = mapBase.create(relative).toURL();
if (!in) {
if (url.getProtocol().equalsIgnoreCase("file"))
return new FileOutputStream(url.getFile());
throw new IllegalArgumentException("Can only save to file: scheme");
}
return new LazyURLInputStream(url);
} catch (MalformedURLException e) {
throw new JenaException( e );
} catch (IOException e) {
e.printStackTrace();
throw new JenaException( e );
}
}
if (!in)
throw new IllegalArgumentException("Can only save to URLs");
if (zip != null)
return new LazyZipEntryInputStream(zip,relPath );
else
return TestInputStreamFactory.getInputStream(property + relPath );
}
private static InputStream getInputStream(String prop) {
// System.err.println(prop);
ClassLoader loader = TestInputStreamFactory.class.getClassLoader();
if (loader == null)
throw new SecurityException("Cannot access class loader");
InputStream in =
// loader.getResourceAsStream("com/hp/hpl/jena/rdf/arp/test/data/" + prop);
loader.getResourceAsStream("testing/" + prop);
// System.out.println(prop);
if (in == null) {
try {
in = new FileInputStream("testing/" + prop);
} catch (IOException e) {
}
if (in == null)
throw new IllegalArgumentException(
"Resource: " + prop + " not found on class path.");
}
return in;
}
public IRI getMapBase() {
return mapBase;
}
}