org.openqa.selenium.server.SessionExtensionJsResource Maven / Gradle / Ivy

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package org.openqa.selenium.server;

import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.tools.ant.filters.StringInputStream;

import org.mortbay.http.ResourceCache;
import org.mortbay.util.IO;
import org.mortbay.util.URLResource;

/**
 * Represents a sessioned extension Javascript resource. This class provides
 * just enough canned return values for the purpose of being passed into
 * ResourceHandler.sendData(), and is not guaranteed to hold water for anything
 * else!
 */
class SessionExtensionJsResource extends URLResource {
    private String extensionJs;
    
    public SessionExtensionJsResource(String extensionJs)
        throws MalformedURLException
    {
        super(new URL("http://selenium.openqa.org"), null);
        this.extensionJs = extensionJs;
    }
    
    @Override
    public boolean exists() {
        return true;
    }
    
    @Override
    public boolean isDirectory() {
        return false;
    }
    
    /**
     * Returns the lastModified time, which is always in the distant future to
     * prevent caching. This comes from FutureFileResource
     * originally.
     */
    @Override
    public long lastModified() {
        return System.currentTimeMillis() + (1000l * 3600l * 24l * 365l * 12l);
    }
    
    @Override
    public long length() {
        return extensionJs.length();
    }
    
    /**
     * This is basically a copy of Resource.writeTo() .
     */
    @Override
    public void writeTo(OutputStream out, long start, long count)
        throws IOException
    {
        InputStream in = new StringInputStream(extensionJs);
        try {
            in.skip(start);
            if (count<0)
                IO.copy(in, out);
            else
                IO.copy(in, out, (int)count);
        }
        finally {
            in.close();
        }
    }
}