plugins/org.eclipse.wst.common.environment/src/org/eclipse/wst/common/internal/environment/eclipse/EclipseURI.java - webtools-common/webtools.common - Git at Google

 /*******************************************************************************
  * Copyright (c) 2004, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.wst.common.internal.environment.eclipse;

 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.Vector;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.wst.common.environment.IEnvironment;
 import org.eclipse.wst.common.environment.uri.IURI;
 import org.eclipse.wst.common.environment.uri.IURIFilter;
 import org.eclipse.wst.common.environment.uri.IURIScheme;
 import org.eclipse.wst.common.environment.uri.URIException;
 import org.eclipse.wst.common.internal.environment.relative.RelativeURI;


 public class EclipseURI extends RelativeURI
 {
   private IEnvironment   environment_;
   private EclipseScheme  scheme_;
   private File           file_;

   public EclipseURI( String uri, IEnvironment environment )
   {
     super( uri );

     environment_  = environment;
     scheme_       = new EclipseScheme( environment );
     file_         = getFile();
   }

   @Override
 public String toString()
   {
     return uri_;
   }

   /**
    * @see org.eclipse.env.uri.IURI#erase()
    */
   @Override
 public void erase() throws URIException
   {
     try
     {
       IResource file = getResource();

       if( file != null && file.exists() )
       {
         if( file instanceof IFile )
         {
           FileResourceUtils.deleteFile( (IFile)file,
                                         environment_.getStatusHandler() );
         }
         else if( file instanceof IFolder )
         {
           FileResourceUtils.deleteFolder( (IFolder)file,
                                           environment_.getStatusHandler() );
         }
       }

     }
     catch( Exception exc )
     {
       throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
     }
   }

   /**
    * @see org.eclipse.env.uri.IURI#getInputStream()
    */
   @Override
 public InputStream getInputStream() throws URIException
   {
     try
     {
       // If a class cast exception is throw it will be propogated as
       // a URIException.
       IFile file = (IFile)getResource();

       //call getContents on the eclipse File object
       if( file != null )
       {
         return file.getContents();
       }
     }
     catch( Throwable exc )
     {
       throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
     }

     return null;
   }

   /**
    * @see org.eclipse.env.uri.IURI#getOutputStream()
    */
   @Override
 public OutputStream getOutputStream() throws URIException
   {
     // Ensure that the parent folder exists.
     IURI parent = parent();

     if( !parent.isPresent() )
     {
       parent().touchFolder();
     }

     return getOutStream();
   }

   /**
    * @see org.eclipse.env.uri.IURI#getURIScheme()
    */
   @Override
 public IURIScheme getURIScheme()
   {
     return scheme_;
   }

   /**
    * @see org.eclipse.env.uri.IURI#isLeaf()
    */
   @Override
 public boolean isLeaf()
   {
     boolean result = false;

     try
     {
       IResource resource = getResource();

       if( resource != null &&
           resource.exists() &&
           resource.getType() == IResource.FILE )
       {
         result = true;
       }
     }
     catch( URIException exc )
     {
       // This IURI does not exist.
       result = false;
     }

     return result;
   }

   /**
    * @see org.eclipse.env.uri.IURI#isPresent()
    */
   @Override
 public boolean isPresent()
   {
     boolean result = false;

     try
     {
       IResource resource = getResource();

       if( resource != null && resource.exists() )
        {
         result = true;
       }
     }
     catch( URIException exc )
     {
       // This IURI does not exist.
       result = false;
     }

     return result;
   }

   /**
    * @see org.eclipse.env.uri.IURI#isReadable()
    */
   @Override
 public boolean isReadable()
   {
     boolean result = false;

     try
     {
       IResource resource = getResource();

       if( resource != null && resource.isAccessible() )
        {
         result = true;
       }
     }
     catch( URIException exc )
     {
       // This IURI does not exist.
       result = false;
     }

     return result;
    }

   /**
    * @see org.eclipse.env.uri.IURI#isRelative()
    */
   @Override
 public boolean isRelative()
   {
     return false;
   }

   /**
    * @see org.eclipse.env.uri.IURI#isWritable()
    */
   @Override
 public boolean isWritable()
   {
     boolean result = false;

     try
     {
       IResource resource = getResource();

       if( resource != null &&
           resource.isAccessible() &&
           !resource.getResourceAttributes().isReadOnly() )
        {
         result = true;
       }
     }
     catch( URIException exc )
     {
       // This IURI does not exist.
       result = false;
     }

     return result;
   }

   /**
    * @see org.eclipse.env.uri.IURI#list()
    */
   @Override
 public IURI[] list() throws URIException
   {
     IResource resource    = getResource();
     IURI[]     uriChildren = new IURI[0];

     if( resource.getType() == IResource.FOLDER )
     {
       IFolder     folder   = (IFolder)resource;

       try
       {
         IResource[] children    = folder.members();

         uriChildren = new IURI[children.length];

         for( int index = 0; index < children.length; index++ )
         {
           IPath path = children[index].getFullPath();
           uriChildren[index] = new EclipseURI( scheme_.getURLFromPath(path), environment_  );
         }
       }
       catch( CoreException exc )
       {
       }
     }

     return uriChildren;
   }

   /**
    * @see org.eclipse.env.uri.IURI#list(org.eclipse.env.uri.IURIFilter)
    */
   @Override
 public IURI[] list(IURIFilter uriFilter) throws URIException
   {
     IResource resource = getResource();
     IURI[]     result   = new IURI[0];

     if( resource.getType() == IResource.FOLDER )
      {
       IFolder     folder   = (IFolder)resource;

       try
       {
         IResource[] children    = folder.members();
         Vector      uriChildren = new Vector();

         for( int index = 0; index < children.length; index++ )
          {
           IPath path = children[index].getFullPath();
           IURI   uri  = new EclipseURI( scheme_.getURLFromPath(path), environment_ );

           if( uriFilter.accepts( uri ) )
           {
             uriChildren.add( uri );
           }
         }

         result = (IURI[])uriChildren.toArray( new IURI[0] );
       }
       catch( CoreException exc )
       {
       }
     }

     return result;
   }

   /**
    * @see org.eclipse.env.uri.IURI#rename(org.eclipse.env.uri.IURI)
    */
   @Override
 public void rename(IURI newURI ) throws URIException
   {
     if( newURI == null || !(newURI instanceof EclipseURI) ) return;

     try
     {
       EclipseURI newEclipseURI = (EclipseURI)newURI;
       IPath      newPath       = new Path( scheme_.getPathFromPlatformURI( newEclipseURI.uri_ ) ).makeAbsolute();
       IResource  resource      = getResource();

       if( resource != null )
       {
         resource.move( newPath, true, null );
       }
     }
     catch( CoreException exc )
     {
       exc.printStackTrace();
       throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ) ); //$NON-NLS-1$
     }
   }

   /**
    * @see org.eclipse.env.uri.IURI#touchFolder()
    */
   @Override
 public void touchFolder() throws URIException
   {
     IResource resource = getResource();

     if( resource != null )
     {
       if( resource.getType() == IResource.FOLDER )
       {
         IFolder folder = (IFolder)resource;

         try
         {
           if( folder.members().length > 0 )
           {
             throw new URIException(
                 new Status( IStatus.ERROR, "id", 0,  //$NON-NLS-1$
                     NLS.bind( Messages.MSG_ERROR_FOLDER_HAS_CHILDREN, folder.toString() ), null ),
                 this );

           }
         }
         catch( CoreException exc )
         {
           throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
         }
       }
       else
       {
          //??? Not sure what to do if touching a folder and the IURI exists and it is not a folder.
       }
     }
     else
     {
       IPath newPath = new Path( scheme_.getPathFromPlatformURI( uri_ ) ).makeAbsolute();

       try
       {
         FileResourceUtils.makeFolderPath( newPath,
 			  	                                environment_.getStatusHandler() );
       }
       catch( CoreException exc )
       {
         throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
       }
     }
   }

   /**
    * @see org.eclipse.env.uri.IURI#touchLeaf()
    */
   @Override
 public void touchLeaf() throws URIException
   {
     IResource resource = getResource();

     if( resource != null )
     {
       // The resource already exists so do nothing.
     }
     else
     {
       // Get the parent for this leaf and create it if required.
       IURI parent = parent();

       if( !parent.isPresent() )
       {
         parent().touchFolder();
       }

       try
       {
         // Get an output stream to the specified file and immediately close it.
         // This should create a 0 byte file.
         getOutStream().close();
       }
       catch( IOException exc )
       {
         throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
       }
     }

   }

   private IResource getResource() throws URIException
   {
     IPath  path             = new Path( scheme_.getPathFromPlatformURI(uri_) );
     String absolutePathname = path.makeAbsolute().toString();

     return FileResourceUtils.findResource(absolutePathname);
   }

   /**
    * @see org.eclipse.env.uri.IURI#getOutputStream()
    */
   private OutputStream getOutStream() throws URIException
   {
     IPath        file   = new Path( scheme_.getPathFromPlatformURI( uri_ ) ).makeAbsolute();
     OutputStream stream = null;

     stream = FileResourceUtils.newFileOutputStream ( file,
  			                                               environment_.getStatusHandler() );
     return stream;
   }

   /**
    * Returns a File object for the resource under this IURI.
    * There are many URIs and URISchemes for which this method
    * will fail and throw an exception. It should be used only
    * in cases where URIs are known to be backed by physical files.
    */
   @Override
 public File asFile ()
   {
   	return file_;
   }

   /* (non-Javadoc)
    * @see org.eclipse.wst.common.environment.uri.IURI#isAvailableAsFile()
    */
   @Override
 public boolean isAvailableAsFile()
   {
   	return file_ != null;
   }

   /* (non-Javadoc)
    * @see org.eclipse.env.uri.URI#asURL()
    */
   @Override
 public URL asURL() throws URIException
   {
     URL url = null;

     try
     {
       url = new URL( uri_ );
     }
     catch( MalformedURLException exc )
     {
       throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this );  //$NON-NLS-1$
     }

     return url;
   }

   /* (non-Javadoc)
    * @see org.eclipse.env.uri.URI#isAvailableAsURL()
    */
   @Override
 public boolean isAvailableAsURL()
   {
     URL theURL = null;

     try
     {
       theURL = asURL();
     }
     catch( URIException exc )
     {
     }

     return theURL != null ;
   }

   private File getFile()
   {
     String platformRes = "platform:/resource"; //$NON-NLS-1$
     File   result      = null;

     if (uri_.startsWith(platformRes))
     {
       result = new File(ResourcesPlugin.getWorkspace().getRoot().getLocation().removeTrailingSeparator().append(uri_.substring(platformRes.length(), uri_.length())).toString());
     }

     return result;
   }
 }
	/*******************************************************************************
	* Copyright (c) 2004, 2005 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.wst.common.internal.environment.eclipse;

	import java.io.File;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.OutputStream;
	import java.net.MalformedURLException;
	import java.net.URL;
	import java.util.Vector;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IFolder;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.osgi.util.NLS;
	import org.eclipse.wst.common.environment.IEnvironment;
	import org.eclipse.wst.common.environment.uri.IURI;
	import org.eclipse.wst.common.environment.uri.IURIFilter;
	import org.eclipse.wst.common.environment.uri.IURIScheme;
	import org.eclipse.wst.common.environment.uri.URIException;
	import org.eclipse.wst.common.internal.environment.relative.RelativeURI;


	public class EclipseURI extends RelativeURI
	{
	private IEnvironment environment_;
	private EclipseScheme scheme_;
	private File file_;

	public EclipseURI( String uri, IEnvironment environment )
	{
	super( uri );

	environment_ = environment;
	scheme_ = new EclipseScheme( environment );
	file_ = getFile();
	}

	@Override
	public String toString()
	{
	return uri_;
	}

	/**
	* @see org.eclipse.env.uri.IURI#erase()
	*/
	@Override
	public void erase() throws URIException
	{
	try
	{
	IResource file = getResource();

	if( file != null && file.exists() )
	{
	if( file instanceof IFile )
	{
	FileResourceUtils.deleteFile( (IFile)file,
	environment_.getStatusHandler() );
	}
	else if( file instanceof IFolder )
	{
	FileResourceUtils.deleteFolder( (IFolder)file,
	environment_.getStatusHandler() );
	}
	}

	}
	catch( Exception exc )
	{
	throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
	}
	}

	/**
	* @see org.eclipse.env.uri.IURI#getInputStream()
	*/
	@Override
	public InputStream getInputStream() throws URIException
	{
	try
	{
	// If a class cast exception is throw it will be propogated as
	// a URIException.
	IFile file = (IFile)getResource();

	//call getContents on the eclipse File object
	if( file != null )
	{
	return file.getContents();
	}
	}
	catch( Throwable exc )
	{
	throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
	}

	return null;
	}

	/**
	* @see org.eclipse.env.uri.IURI#getOutputStream()
	*/
	@Override
	public OutputStream getOutputStream() throws URIException
	{
	// Ensure that the parent folder exists.
	IURI parent = parent();

	if( !parent.isPresent() )
	{
	parent().touchFolder();
	}

	return getOutStream();
	}

	/**
	* @see org.eclipse.env.uri.IURI#getURIScheme()
	*/
	@Override
	public IURIScheme getURIScheme()
	{
	return scheme_;
	}

	/**
	* @see org.eclipse.env.uri.IURI#isLeaf()
	*/
	@Override
	public boolean isLeaf()
	{
	boolean result = false;

	try
	{
	IResource resource = getResource();

	if( resource != null &&
	resource.exists() &&
	resource.getType() == IResource.FILE )
	{
	result = true;
	}
	}
	catch( URIException exc )
	{
	// This IURI does not exist.
	result = false;
	}

	return result;
	}

	/**
	* @see org.eclipse.env.uri.IURI#isPresent()
	*/
	@Override
	public boolean isPresent()
	{
	boolean result = false;

	try
	{
	IResource resource = getResource();

	if( resource != null && resource.exists() )
	{
	result = true;
	}
	}
	catch( URIException exc )
	{
	// This IURI does not exist.
	result = false;
	}

	return result;
	}

	/**
	* @see org.eclipse.env.uri.IURI#isReadable()
	*/
	@Override
	public boolean isReadable()
	{
	boolean result = false;

	try
	{
	IResource resource = getResource();

	if( resource != null && resource.isAccessible() )
	{
	result = true;
	}
	}
	catch( URIException exc )
	{
	// This IURI does not exist.
	result = false;
	}

	return result;
	}

	/**
	* @see org.eclipse.env.uri.IURI#isRelative()
	*/
	@Override
	public boolean isRelative()
	{
	return false;
	}

	/**
	* @see org.eclipse.env.uri.IURI#isWritable()
	*/
	@Override
	public boolean isWritable()
	{
	boolean result = false;

	try
	{
	IResource resource = getResource();

	if( resource != null &&
	resource.isAccessible() &&
	!resource.getResourceAttributes().isReadOnly() )
	{
	result = true;
	}
	}
	catch( URIException exc )
	{
	// This IURI does not exist.
	result = false;
	}

	return result;
	}

	/**
	* @see org.eclipse.env.uri.IURI#list()
	*/
	@Override
	public IURI[] list() throws URIException
	{
	IResource resource = getResource();
	IURI[] uriChildren = new IURI[0];

	if( resource.getType() == IResource.FOLDER )
	{
	IFolder folder = (IFolder)resource;

	try
	{
	IResource[] children = folder.members();

	uriChildren = new IURI[children.length];

	for( int index = 0; index < children.length; index++ )
	{
	IPath path = children[index].getFullPath();
	uriChildren[index] = new EclipseURI( scheme_.getURLFromPath(path), environment_ );
	}
	}
	catch( CoreException exc )
	{
	}
	}

	return uriChildren;
	}

	/**
	* @see org.eclipse.env.uri.IURI#list(org.eclipse.env.uri.IURIFilter)
	*/
	@Override
	public IURI[] list(IURIFilter uriFilter) throws URIException
	{
	IResource resource = getResource();
	IURI[] result = new IURI[0];

	if( resource.getType() == IResource.FOLDER )
	{
	IFolder folder = (IFolder)resource;

	try
	{
	IResource[] children = folder.members();
	Vector uriChildren = new Vector();

	for( int index = 0; index < children.length; index++ )
	{
	IPath path = children[index].getFullPath();
	IURI uri = new EclipseURI( scheme_.getURLFromPath(path), environment_ );

	if( uriFilter.accepts( uri ) )
	{
	uriChildren.add( uri );
	}
	}

	result = (IURI[])uriChildren.toArray( new IURI[0] );
	}
	catch( CoreException exc )
	{
	}
	}

	return result;
	}

	/**
	* @see org.eclipse.env.uri.IURI#rename(org.eclipse.env.uri.IURI)
	*/
	@Override
	public void rename(IURI newURI ) throws URIException
	{
	if( newURI == null \|\| !(newURI instanceof EclipseURI) ) return;

	try
	{
	EclipseURI newEclipseURI = (EclipseURI)newURI;
	IPath newPath = new Path( scheme_.getPathFromPlatformURI( newEclipseURI.uri_ ) ).makeAbsolute();
	IResource resource = getResource();

	if( resource != null )
	{
	resource.move( newPath, true, null );
	}
	}
	catch( CoreException exc )
	{
	exc.printStackTrace();
	throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ) ); //$NON-NLS-1$
	}
	}

	/**
	* @see org.eclipse.env.uri.IURI#touchFolder()
	*/
	@Override
	public void touchFolder() throws URIException
	{
	IResource resource = getResource();

	if( resource != null )
	{
	if( resource.getType() == IResource.FOLDER )
	{
	IFolder folder = (IFolder)resource;

	try
	{
	if( folder.members().length > 0 )
	{
	throw new URIException(
	new Status( IStatus.ERROR, "id", 0, //$NON-NLS-1$
	NLS.bind( Messages.MSG_ERROR_FOLDER_HAS_CHILDREN, folder.toString() ), null ),
	this );

	}
	}
	catch( CoreException exc )
	{
	throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
	}
	}
	else
	{
	//??? Not sure what to do if touching a folder and the IURI exists and it is not a folder.
	}
	}
	else
	{
	IPath newPath = new Path( scheme_.getPathFromPlatformURI( uri_ ) ).makeAbsolute();

	try
	{
	FileResourceUtils.makeFolderPath( newPath,
	environment_.getStatusHandler() );
	}
	catch( CoreException exc )
	{
	throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
	}
	}
	}

	/**
	* @see org.eclipse.env.uri.IURI#touchLeaf()
	*/
	@Override
	public void touchLeaf() throws URIException
	{
	IResource resource = getResource();

	if( resource != null )
	{
	// The resource already exists so do nothing.
	}
	else
	{
	// Get the parent for this leaf and create it if required.
	IURI parent = parent();

	if( !parent.isPresent() )
	{
	parent().touchFolder();
	}

	try
	{
	// Get an output stream to the specified file and immediately close it.
	// This should create a 0 byte file.
	getOutStream().close();
	}
	catch( IOException exc )
	{
	throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
	}
	}

	}

	private IResource getResource() throws URIException
	{
	IPath path = new Path( scheme_.getPathFromPlatformURI(uri_) );
	String absolutePathname = path.makeAbsolute().toString();

	return FileResourceUtils.findResource(absolutePathname);
	}

	/**
	* @see org.eclipse.env.uri.IURI#getOutputStream()
	*/
	private OutputStream getOutStream() throws URIException
	{
	IPath file = new Path( scheme_.getPathFromPlatformURI( uri_ ) ).makeAbsolute();
	OutputStream stream = null;

	stream = FileResourceUtils.newFileOutputStream ( file,
	environment_.getStatusHandler() );
	return stream;
	}

	/**
	* Returns a File object for the resource under this IURI.
	* There are many URIs and URISchemes for which this method
	* will fail and throw an exception. It should be used only
	* in cases where URIs are known to be backed by physical files.
	*/
	@Override
	public File asFile ()
	{
	return file_;
	}

	/* (non-Javadoc)
	* @see org.eclipse.wst.common.environment.uri.IURI#isAvailableAsFile()
	*/
	@Override
	public boolean isAvailableAsFile()
	{
	return file_ != null;
	}

	/* (non-Javadoc)
	* @see org.eclipse.env.uri.URI#asURL()
	*/
	@Override
	public URL asURL() throws URIException
	{
	URL url = null;

	try
	{
	url = new URL( uri_ );
	}
	catch( MalformedURLException exc )
	{
	throw new URIException( new Status( IStatus.ERROR, "id", 0, exc.getMessage(), exc ), this ); //$NON-NLS-1$
	}

	return url;
	}

	/* (non-Javadoc)
	* @see org.eclipse.env.uri.URI#isAvailableAsURL()
	*/
	@Override
	public boolean isAvailableAsURL()
	{
	URL theURL = null;

	try
	{
	theURL = asURL();
	}
	catch( URIException exc )
	{
	}

	return theURL != null ;
	}

	private File getFile()
	{
	String platformRes = "platform:/resource"; //$NON-NLS-1$
	File result = null;

	if (uri_.startsWith(platformRes))
	{
	result = new File(ResourcesPlugin.getWorkspace().getRoot().getLocation().removeTrailingSeparator().append(uri_.substring(platformRes.length(), uri_.length())).toString());
	}

	return result;
	}
	}