import java.net.URL;
import java.net.URLConnection;
import java.io.PipedReader;
import java.io.PipedWriter;
import java.io.PrintWriter;
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class pipes_c
{

  public static void main( String args[] )
    throws Exception
  {
    if ( args.length != 2 )
    {
      System.out.println( 
        "Kör: java pipes_c urlnamn filnamn" );
      return;
    //////////
    } // if

    // Ordna koppling till nätverksfilen
    URL url = new URL( args[0] );
    URLConnection url_conn = 
      url.openConnection();
    BufferedReader reader = new BufferedReader(
      new InputStreamReader(
        url_conn.getInputStream() ) );

    // Ordna en pipe
    PipedReader in_pipe = new PipedReader();
    PipedWriter out_pipe = new PipedWriter( 
      in_pipe );

    PrintWriter writer = new PrintWriter(
      out_pipe );

    // Skapa tråd för skrivning till disk
    fil_thread_c fil_thread = new fil_thread_c(
      args[1], in_pipe );
    fil_thread.start();

    // Läs URL-filen, skriv till pipe
    System.out.println( "Startar URL-läsning." );
    while ( true )
    {
      String buf = reader.readLine();
      if ( buf == null )
      {
        break;
      /////////
      }

      writer.println( buf );
    } // while
    writer.close();

    System.out.println( 
      "Då var läsningen klar då." );
  } // main
} // pipes_c