VfsResource.java

package jef.tools.resource;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URL;

import jef.tools.Assert;

public class VfsResource extends AbstractResource {

	private final Object resource;


	public VfsResource(Object resources) {
		Assert.notNull(resources, "VirtualFile must not be null");
		this.resource = resources;
	}


	public InputStream getInputStream() throws IOException {
		return VfsUtils.getInputStream(this.resource);
	}

	@Override
	public boolean exists() {
		return VfsUtils.exists(this.resource);
	}

	@Override
	public boolean isReadable() {
		return VfsUtils.isReadable(this.resource);
	}

	@Override
	public URL getURL(){
		try {
			return VfsUtils.getURL(this.resource);
		}
		catch (Exception ex) {
			throw new RuntimeException("Failed to obtain URL for file " + this.resource, ex);
		}
	}

	@Override
	public URI getURI() throws IOException {
		try {
			return VfsUtils.getURI(this.resource);
		}
		catch (Exception ex) {
			throw new IOException("Failed to obtain URI for " + this.resource, ex);
		}
	}

	@Override
	public File getFile() throws IOException {
		return VfsUtils.getFile(this.resource);
	}

	@Override
	public long contentLength() throws IOException {
		return VfsUtils.getSize(this.resource);
	}

	@Override
	public long lastModified() throws IOException {
		return VfsUtils.getLastModified(this.resource);
	}

	@Override
	public IResource createRelative(String relativePath) throws IOException {
		if (!relativePath.startsWith(".") && relativePath.contains("/")) {
			try {
				return new VfsResource(VfsUtils.getChild(this.resource, relativePath));
			}
			catch (IOException ex) {
				// fall back to getRelative
			}
		}

		return new VfsResource(VfsUtils.getRelative(new URL(getURL(), relativePath)));
	}

	@Override
	public String getFilename() {
		return VfsUtils.getName(this.resource);
	}

	public String getDescription() {
		return this.resource.toString();
	}

	@Override
	public boolean equals(Object obj) {
		return (obj == this || (obj instanceof VfsResource && this.resource.equals(((VfsResource) obj).resource)));
	}

	@Override
	public int hashCode() {
		return this.resource.hashCode();
	}


	@Override
	public boolean isFile() {
		return true;
	}

}