gcc/libjava/java/io/RandomAccessFile.java

// RandomAccessFile.java

/* Copyright (C) 1998, 1999  Cygnus Solutions

   This file is part of libgcj.

This software is copyrighted work licensed under the terms of the
Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
details.  */

package java.io;

/**
 * @author Tom Tromey <tromey@cygnus.com>
 * @date September 25, 1998 
 */

/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
 * "The Java Language Specification", ISBN 0-201-63451-1
 * Status:  not finished
 */

public class RandomAccessFile implements DataOutput, DataInput
{
  public void close () throws IOException
  {
    fd.close();
  }

  public final FileDescriptor getFD () throws IOException
  {
    if (! fd.valid())
      throw new IOException ();
    return fd;
  }

  public long getFilePointer () throws IOException
  {
    return fd.getFilePointer();
  }

  public long length () throws IOException
  {
    return fd.length();
  }

  public RandomAccessFile (String fileName, String mode) throws IOException
  {
    int fdmode;
    if (mode.compareTo ("r") == 0)
      fdmode = FileDescriptor.READ;
    else if (mode.compareTo ("rw") == 0)
      fdmode = FileDescriptor.READ | FileDescriptor.WRITE;
    else
      throw new IllegalArgumentException ("invalid mode: " + mode);

    SecurityManager s = System.getSecurityManager();
    if (s != null)
      {
	s.checkRead(fileName);
	if ((fdmode & FileDescriptor.WRITE) != 0)
	  s.checkWrite(fileName);
      }

    fd = new FileDescriptor (fileName, fdmode);
    // FIXME: read-only mode.
    out = new DataOutputStream (new FileOutputStream (fd));
    in = new DataInputStream (new FileInputStream (fd));
  }

  public RandomAccessFile (File file, String mode) throws IOException
  {
    this (file.getPath(), mode);
  }

  public int read () throws IOException
  {
    return in.read();
  }

  public int read (byte[] buffer) throws IOException
  {
    return in.read(buffer);
  }

  public int read (byte[] buffer, int offset, int count) throws IOException
  {
    return in.read(buffer, offset, count);
  }

  public final boolean readBoolean () throws IOException
  {
    return in.readBoolean();
  }

  public final byte readByte () throws IOException
  {
    return in.readByte();
  }

  public final char readChar () throws IOException
  {
    return in.readChar();
  }

  public final double readDouble () throws IOException
  {
    return in.readDouble();
  }

  public final float readFloat () throws IOException
  {
    return in.readFloat();
  }

  public final void readFully (byte[] buffer) throws IOException
  {
    // FIXME.
  }

  public final void readFully (byte[] buffer, int offset, int count)
    throws IOException
  {
    // FIXME.
  }

  public final int readInt () throws IOException
  {
    return in.readInt();
  }

  public final String readLine () throws IOException
  {
    // FIXME?
    return in.readLine();
  }

  public final long readLong () throws IOException
  {
    return in.readLong();
  }

  public final short readShort () throws IOException
  {
    return in.readShort();
  }

  public final int readUnsignedByte () throws IOException
  {
    return in.readUnsignedByte();
  }

  public final int readUnsignedShort () throws IOException
  {
    return in.readUnsignedShort();
  }

  public final String readUTF () throws IOException
  {
    return in.readUTF();
  }

  public void seek (long pos) throws IOException
  {
    fd.seek(pos, FileDescriptor.SET);
  }

  public int skipBytes (int count) throws IOException
  {
    return fd.seek(count, FileDescriptor.CUR);
  }

  public void write (int oneByte) throws IOException
  {
    out.write(oneByte);
  }

  public void write (byte[] buffer) throws IOException
  {
    out.write(buffer);
  }

  public void write (byte[] buffer, int offset, int count) throws IOException
  {
    out.write(buffer, offset, count);
  }

  public final void writeBoolean (boolean val) throws IOException
  {
    out.writeBoolean(val);
  }

  public final void writeByte (int v) throws IOException
  {
    out.writeByte(v);
  }

  public final void writeShort (int v) throws IOException
  {
    out.writeShort(v);
  }

  public final void writeChar (int v) throws IOException
  {
    out.writeChar(v);
  }

  public final void writeInt (int v) throws IOException
  {
    out.writeInt(v);
  }

  public final void writeLong (long v) throws IOException
  {
    out.writeLong(v);
  }

  public final void writeFloat (float v) throws IOException
  {
    out.writeFloat(v);
  }

  public final void writeDouble (double v) throws IOException
  {
    out.writeDouble(v);
  }

  public final void writeBytes (String s) throws IOException
  {
    out.writeBytes(s);
  }

  public final void writeChars (String s) throws IOException
  {
    out.writeChars(s);
  }
  
  public final void writeUTF (String s) throws IOException
  {
    out.writeUTF(s);
  }


  // The underlying file.
  private FileDescriptor fd;
  // The corresponding input and output streams.
  private DataOutputStream out;
  private DataInputStream in;
}