/**
* This file Copyright (c) 2005-2008 Aptana, Inc. This program is
* dual-licensed under both the Aptana Public License and the GNU General
* Public license. You may elect to use one or the other of these licenses.
*
* This program is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. Redistribution, except as permitted by whichever of
* the GPL or APL you select, is prohibited.
*
* 1. For the GPL license (GPL), you can redistribute and/or modify this
* program under the terms of the GNU General Public License,
* Version 3, as published by the Free Software Foundation. You should
* have received a copy of the GNU General Public License, Version 3 along
* with this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Aptana provides a special exception to allow redistribution of this file
* with certain other free and open source software ("FOSS") code and certain additional terms
* pursuant to Section 7 of the GPL. You may view the exception and these
* terms on the web at http://www.aptana.com/legal/gpl/.
*
* 2. For the Aptana Public License (APL), this program and the
* accompanying materials are made available under the terms of the APL
* v1.0 which accompanies this distribution, and is available at
* http://www.aptana.com/legal/apl/.
*
* You may view the GPL, Aptana's exception and additional terms, and the
* APL in the file titled license.html at the root of the corresponding
* plugin containing this source file.
*
* Any modifications to this file must keep this entire header intact.
*/
package com.aptana.ide.views.outline;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.URI;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IPathEditorInput;
import org.eclipse.ui.IURIEditorInput;
import org.eclipse.ui.part.FileEditorInput;
import com.aptana.ide.core.StreamUtils;
import com.aptana.ide.core.ui.CoreUIUtils;
/**
* @author Pavel Petrochenko
*/
public final class PathResolverProvider
{
/**
*
* @author Pavel Petrochenko
* resolver which is not able to resolve anything
*/
private static final class NullResolver implements IPathResolver
{
/**
* @see com.aptana.ide.views.outline.IPathResolver#addChangeListener(java.lang.String, org.eclipse.jface.util.IPropertyChangeListener)
*/
public void addChangeListener(String path, IPropertyChangeListener listener)
{
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#removeChangeListener(java.lang.String, org.eclipse.jface.util.IPropertyChangeListener)
*/
public void removeChangeListener(String path, IPropertyChangeListener listener)
{
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#resolveEditorInput(java.lang.String)
*/
public IEditorInput resolveEditorInput(String attribute)
{
return null;
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#resolveSource(java.lang.String)
*/
public String resolveSource(String path) throws Exception
{
return null;
}
}
/**
* resolver doing resolving basing on current directory in the file system
* @author Pavel Petrochenko
*/
private static final class FilePathResolver implements IPathResolver
{
private File file;
/**
* @param path
*/
public FilePathResolver(IPath path)
{
this.file = path.toFile();
// TODO Auto-generated constructor stub
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#addChangeListener(java.lang.String,
* org.eclipse.jface.util.IPropertyChangeListener)
*/
public void addChangeListener(String path, IPropertyChangeListener listener)
{
// do nothing here
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#removeChangeListener(java.lang.String,
* org.eclipse.jface.util.IPropertyChangeListener)
*/
public void removeChangeListener(String path, IPropertyChangeListener listener)
{
// do nothing here
}
private File resolveToFile(String path)
{
if (path.charAt(0) == '/')
{
// absolute path (project relative);
return null;
}
Path p = new Path(path);
File append = file.getParentFile();
for (int a = 0; a < p.segmentCount(); a++)
{
String segment = p.segment(a).trim();
if (segment.equals(".")) { //$NON-NLS-1$
continue;
}
else if (segment.equals("..")) { //$NON-NLS-1$
append = file.getParentFile();
}
else
{
append = new File(append, segment);
}
}
return append;
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#resolveSource(java.lang.String)
*/
public String resolveSource(String path) throws Exception
{
File file = resolveToFile(path);
if (!file.exists())
{
return null;
}
FileInputStream fs = new FileInputStream(file);
return StreamUtils.readContent(fs, Charset.defaultCharset().name());
}
/**
* @param path
* @return path
* @throws Exception
* @see com.aptana.ide.views.outline.IPathResolver#resolvePath(java.lang.String)
*/
public IPath resolvePath(String path) throws Exception
{
return new Path(resolveToFile(path).getAbsolutePath());
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#resolveEditorInput(java.lang.String)
*/
public IEditorInput resolveEditorInput(String attribute)
{
File resolveToFile = resolveToFile(attribute);
if (resolveToFile != null)
{
return CoreUIUtils.createJavaFileEditorInput(resolveToFile);
}
return null;
}
}
/**
* resolver for resources in the workspace
* @author Pavel Petrochenko
*/
private static final class IFilePathResolver implements IPathResolver
{
private IProject project;
private IPath path;
static HashMap listeners = new HashMap();
//listening to the workspace delta here
static
{
ResourcesPlugin.getWorkspace().addResourceChangeListener(new IResourceChangeListener()
{
public void resourceChanged(IResourceChangeEvent event)
{
IResourceDelta delta = event.getDelta();
if (delta != null)
{
processDelta(delta);
}
}
private void processDelta(IResourceDelta delta)
{
IResourceDelta[] affectedChildren = delta.getAffectedChildren();
for (int a = 0; a < affectedChildren.length; a++)
{
IResource resource = affectedChildren[a].getResource();
if (resource instanceof IFile)
{
IPath fullPath = resource.getFullPath();
fireChange(fullPath);
}
processDelta(affectedChildren[a]);
}
}
});
}
/**
* fires change in the resource on a given path
* @param fullPath
*/
private static synchronized void fireChange(IPath fullPath)
{
List object = (List) listeners.get(fullPath);
if (object == null)
{
return;
}
for (int i = 0; i < object.size(); i++)
{
IPropertyChangeListener listener = (IPropertyChangeListener) object.get(i);
listener.propertyChange(new PropertyChangeEvent(IFilePathResolver.class, "content", null, fullPath //$NON-NLS-1$
.toOSString()));
}
}
/**
* @param project
* @param path
*/
public IFilePathResolver(IProject project, IPath path)
{
this.project = project;
this.path = path;
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#addChangeListener(java.lang.String,
* org.eclipse.jface.util.IPropertyChangeListener)
*/
public synchronized void addChangeListener(String path, IPropertyChangeListener listener)
{
IFile resolveToIFile = resolveToIFile(path);
if (resolveToIFile == null)
{
return;
}
IPath fullPath = resolveToIFile.getFullPath();
List object = (List) listeners.get(fullPath);
if (object == null)
{
object = new ArrayList();
listeners.put(fullPath, object);
}
object.add(listener);
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#removeChangeListener(java.lang.String,
* org.eclipse.jface.util.IPropertyChangeListener)
*/
public synchronized void removeChangeListener(String path, IPropertyChangeListener listener)
{
IFile resolveToIFile = resolveToIFile(path);
if (resolveToIFile == null)
{
return;
}
IPath fullPath = resolveToIFile.getFullPath();
List object = (List) listeners.get(fullPath);
if (object == null)
{
return;
}
object.remove(listener);
if (object.isEmpty())
{
listeners.remove(fullPath);
}
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#resolveSource(java.lang.String)
*/
public String resolveSource(String path) throws Exception
{
IFile file = resolveToIFile(path);
if (file == null)
{
return null;
}
if (!file.exists())
{
return null;
}
InputStream contents = file.getContents(true);
try
{
String charset = file.getCharset(true);
return StreamUtils.readContent(contents, charset);
}
finally
{
contents.close();
}
}
private IFile resolveToIFile(String path)
{
if (path.charAt(0) == '/')
{
// absolute path (project relative);
return project.getFile(path);
}
Path p = new Path(path);
IPath append = this.path.removeLastSegments(1);
for (int a = 0; a < p.segmentCount(); a++)
{
String segment = p.segment(a).trim();
if (segment.equals(".")) { //$NON-NLS-1$
continue;
}
else if (segment.equals("..")) { //$NON-NLS-1$
if (append.segmentCount() == 0)
{
return null;
}
append = append.removeLastSegments(1);
}
else
{
append = append.append(segment);
}
}
return project.getFile(append);
}
/**
* @see java.lang.Object#hashCode()
*/
public int hashCode()
{
final int prime = 31;
int result = 1;
result = prime * result + ((path == null) ? 0 : path.hashCode());
result = prime * result + ((project == null) ? 0 : project.hashCode());
return result;
}
/**
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object obj)
{
if (this == obj)
{
return true;
}
if (obj == null)
{
return false;
}
if (getClass() != obj.getClass())
{
return false;
}
final IFilePathResolver other = (IFilePathResolver) obj;
if (path == null)
{
if (other.path != null)
{
return false;
}
}
else if (!path.equals(other.path))
{
return false;
}
if (project == null)
{
if (other.project != null)
{
return false;
}
}
else if (!project.equals(other.project))
{
return false;
}
return true;
}
/**
* @param path
* @return
* @throws Exception
* @see com.aptana.ide.views.outline.IPathResolver#resolvePath(java.lang.String)
*/
public IPath resolvePath(String path) throws Exception
{
IFile resolveToIFile = resolveToIFile(path);
if (resolveToIFile != null)
{
return resolveToIFile.getFullPath();
}
return null;
}
/**
* @see com.aptana.ide.views.outline.IPathResolver#resolveEditorInput(java.lang.String)
*/
public IEditorInput resolveEditorInput(String attribute)
{
IFile resolveToIFile = resolveToIFile(attribute);
if (resolveToIFile != null)
{
return new FileEditorInput(resolveToIFile);
}
return null;
}
}
private PathResolverProvider()
{
}
/**
* returns path resolver for a given editor input
* @param input
* @return path resolver for a given editor input
*/
public static IPathResolver getResolver(IEditorInput input)
{
if (input instanceof FileEditorInput)
{
FileEditorInput fi = (FileEditorInput) input;
return new IFilePathResolver(fi.getFile().getProject(), fi.getFile().getProjectRelativePath());
}
if (input instanceof IPathEditorInput)
{
IPathEditorInput fInput = (IPathEditorInput) (input);
return new FilePathResolver(fInput.getPath());
}
if (input instanceof IURIEditorInput) {
URI uri = ((IURIEditorInput) input).getURI();
if ("file".equals(uri.getScheme())) {
return new FilePathResolver(Path.fromOSString(new File(uri).getAbsolutePath()));
}
}
IPathEditorInput adapter = (IPathEditorInput) input.getAdapter(IPathEditorInput.class);
if (adapter != null)
{
return new FilePathResolver(adapter.getPath());
}
return new NullResolver();
}
}