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* http://glassfish.java.net/public/CDDL+GPL_1_1.html
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package org.glassfish.jersey.server.internal.scanning;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.glassfish.jersey.server.ResourceFinder;
import org.glassfish.jersey.uri.UriComponent;
/**
* A "jar" and "zip" scheme URI scanner that recursively jar files.
* Jar entries are reported to a {@link ResourceProcessor}.
*
* @author Paul Sandoz
* @author Gerard Davison ([email protected])
*/
class JarZipSchemeResourceFinderFactory implements UriSchemeResourceFinderFactory {
@Override
public Set getSchemes() {
return new HashSet(Arrays.asList("jar", "zip"));
}
/**
* Create new "jar" and "zip" scheme URI scanner factory.
*/
JarZipSchemeResourceFinderFactory() {
}
@Override
public JarZipSchemeScanner create(final URI uri, boolean recursive) {
final String ssp = uri.getRawSchemeSpecificPart();
final String jarUrlString = ssp.substring(0, ssp.lastIndexOf('!'));
final String parent = ssp.substring(ssp.lastIndexOf('!') + 2);
try {
return new JarZipSchemeScanner(getInputStream(jarUrlString), parent, recursive);
} catch (IOException e) {
throw new ResourceFinderException(e);
}
}
private class JarZipSchemeScanner implements ResourceFinder {
private InputStream inputStream;
private JarFileScanner jarFileScanner;
private JarZipSchemeScanner(InputStream inputStream, String parent, boolean recursive) throws IOException {
this.inputStream = inputStream;
this.jarFileScanner = new JarFileScanner(inputStream, parent, recursive);
}
@Override
public boolean hasNext() {
final boolean hasNext = jarFileScanner.hasNext();
if(!hasNext) {
try {
inputStream.close();
} catch (IOException e) {
Logger.getLogger(JarZipSchemeScanner.class.getName()).log(Level.FINE, "Unable to close jar file.", e);
}
return false;
}
return true;
}
@Override
public String next() {
return jarFileScanner.next();
}
@Override
public void remove() {
jarFileScanner.remove();
}
@Override
public InputStream open() {
return jarFileScanner.open();
}
@Override
public void reset() {
jarFileScanner.reset();
}
}
/**
* Obtain a {@link InputStream} of the jar file.
*
* For most platforms the format for the zip or jar follows the form of
* the
*
* jar:file:///tmp/fishfingers.zip!/example.txtzip:http://www.example.com/fishfingers.zip!/example.txt
*
* On versions of the WebLogic application server a proprietary format is
* supported of the following form, which assumes a zip file located on
* the local file system:
*
*
* zip:/tmp/fishfingers.zip!/example.txtzip:d:/tempfishfingers.zip!/example.txt
*
* This method will first attempt to create a {@link InputStream} as follows:
*
* new URL(jarUrlString).openStream();
*
* if that fails with a {@link java.net.MalformedURLException} then the method will
* attempt to create a {@link InputStream} instance as follows:
*
* return new new FileInputStream(
* UriComponent.decode(jarUrlString, UriComponent.Type.PATH)));
*
*
* @param jarUrlString the raw scheme specific part of a URI minus the jar
* entry
* @return a {@link InputStream}.
* @throws IOException if there is an error opening the stream.
*/
private InputStream getInputStream(String jarUrlString) throws IOException {
try {
return new URL(jarUrlString).openStream();
} catch (MalformedURLException e) {
return new FileInputStream(
UriComponent.decode(jarUrlString, UriComponent.Type.PATH));
}
}
}