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package org.eclipse.jst.jsf.designtime.internal.resources;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.core.resources.IProject;
import org.eclipse.jst.jsf.common.internal.finder.VisitorMatcher;
import org.eclipse.jst.jsf.common.internal.finder.acceptor.JarEntryMatchingAcceptor;
import org.eclipse.jst.jsf.common.internal.finder.matcher.TaglibJarEntryFinder;
import org.eclipse.jst.jsf.common.internal.locator.ILocatorChangeListener;
import org.eclipse.jst.jsf.common.internal.resource.ClasspathJarFile;
import org.eclipse.jst.jsf.common.internal.resource.ContentTypeResolver;
import org.eclipse.jst.jsf.common.internal.resource.IJarLocator;
import org.eclipse.jst.jsf.common.internal.util.JarUtilities;
import org.eclipse.jst.jsf.core.internal.JSFCorePlugin;
import org.eclipse.jst.jsf.designtime.internal.resources.ResourceIdentifierFactory.InvalidIdentifierException;
/**
* A JSF resource locator that finds resources in jars.
*
* @author cbateman
*
*/
public class JarBasedJSFResourceLocator extends AbstractJSFResourceLocator
{
private final IJarLocator _provider;
private final ContentTypeResolver _contentTypeResolver;
private static final Pattern _resourcePathPattern = Pattern
.compile("META-INF/resources/(.*)"); //$NON-NLS-1$
private static final TaglibJarEntryFinder _resourceFinder = new TaglibJarEntryFinder(
_resourcePathPattern);
/**
* @param id
* @param displayName
* @param noResultValue
* @param mutableListenerList
* @param provider
* @param contentTypeResolver
*/
public JarBasedJSFResourceLocator(
final String id,
final String displayName,
final List<IJSFResourceFragment> noResultValue,
final CopyOnWriteArrayList<ILocatorChangeListener> mutableListenerList,
final IJarLocator provider,
final ContentTypeResolver contentTypeResolver)
{
super(id, displayName, noResultValue, mutableListenerList);
_provider = provider;
_contentTypeResolver = contentTypeResolver;
}
/**
* @param noResultValue
* @param mutableListenerList
* @param provider
* @param contentTypeResolver
*/
public JarBasedJSFResourceLocator(
final List<IJSFResourceFragment> noResultValue,
final CopyOnWriteArrayList<ILocatorChangeListener> mutableListenerList,
final IJarLocator provider,
final ContentTypeResolver contentTypeResolver)
{
this(
"", "", noResultValue, mutableListenerList, provider, contentTypeResolver); //$NON-NLS-1$//$NON-NLS-2$
}
@Override
public void start(final IProject initialContext)
{
_provider.start(initialContext);
super.start(initialContext);
}
@Override
public void stop()
{
_provider.stop();
super.stop();
}
@Override
protected List<IJSFResourceFragment> doLocate(final IProject project)
{
final List<IJSFResourceFragment> resourcesFound = new ArrayList<IJSFResourceFragment>();
final Collection<? extends ClasspathJarFile> jars = _provider
.getJars(project);
for (final ClasspathJarFile classpathJarFile : jars)
{
final JarFile jarFile = classpathJarFile.getJarFile();
if (jarFile != null)
{
resourcesFound.addAll(processJar(jarFile));
}
}
return resourcesFound;
}
/**
* @param entry
* @param defaultDtdStream
* @throws Exception
*/
private List<JSFResource> processJar(final JarFile jarFile)
{
final List<JSFResource> tagLibsFound = new ArrayList<JSFResource>();
try
{
if (jarFile != null)
{
final JarEntryMatchingAcceptor acceptor = new JarEntryMatchingAcceptor();
final VisitorMatcher<JarFile, JarEntry, String> matcher = new VisitorMatcher<JarFile, JarEntry, String>(
"", "", acceptor, Collections.singletonList(_resourceFinder)); //$NON-NLS-1$//$NON-NLS-2$
final Collection<? extends JarEntry> matchingEntries = matcher
.find(jarFile);
for (final JarEntry jarEntry : matchingEntries)
{
try
{
final Matcher patternMatcher = _resourcePathPattern
.matcher(jarEntry.getName());
if (patternMatcher.matches())
{
final String group = patternMatcher.group(1);
if (group != null && group.trim().length() > 0)
{
final ResourceIdentifier libRes = new ResourceIdentifierFactory()
.createLibraryResource(group);
final URL jarUrl = JarUtilities.INSTANCE
.createJarUrl(jarFile);
tagLibsFound.add(new JarBasedJSFResource(
libRes, jarUrl, _contentTypeResolver));
}
}
} catch (final InvalidIdentifierException e)
{
// Bug 377405: ignore due to perf problems.
//JSFCorePlugin.log(IStatus.INFO, "Ignoring invalid id: "+e.getId()); //$NON-NLS-1$
}
catch (final Exception e)
{
JSFCorePlugin.log(
"Error initializing facelet registry entry", //$NON-NLS-1$
e);
}
}
}
} catch (final Exception e)
{
JSFCorePlugin.log(e,
"While locating jar based facelet tag libraries"); //$NON-NLS-1$
} finally
{
if (jarFile != null)
{
try
{
jarFile.close();
} catch (final IOException ioe)
{
JSFCorePlugin.log("Error closing jar file", ioe); //$NON-NLS-1$
}
}
}
return tagLibsFound;
}
}
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