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FileWriter.java: Merge with Classpath.

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* java/io/FileWriter.java: Merge with Classpath.
	* java/io/FilterInputStream.java: Ditto.
	(mark): no longer synchronized
	(reset): Likewise
	* java/io/FilterOutputStream.java: Merge with Classpath.
	* java/io/FilterReader.java: Ditto.
	(mark): no longer synchronized
	(reset): Likewise
	* java/io/FilterWriter.java: Merge with Classpath.
	* java/io/Writer.java: Ditto.
	* java/lang/Compiler.java: Ditto.
	* java/lang/Process.java: Ditto.
	* java/lang/Void.java: Ditto.
	* java/net/ContentHandler.java: Ditto.
	* java/net/DatagramPacket.java: Ditto.
	* java/net/MulticastSocket.java: Merge comments with Classpath.

From-SVN: r45930
This commit is contained in:
Mark Wielaard 2001-10-01 18:24:54 +00:00 • committed by Mark Wielaard
parent be55d07d6f
commit 477946a63d
13 changed files with 1630 additions and 383 deletions
Download patch file Download diff file Expand all files Collapse all files

77
libjava/java/net/ContentHandler.java
View file

@ -1,29 +1,80 @@
// ContentHandler.java - Superclass of classes that read from a URLConnection.
/* ContentHandler.java -- Abstract class for handling content from URL's
Copyright (C) 1998, 1999 2000, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1999 Free Software Foundation
This file is part of GNU Classpath.
This file is part of libgcj.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
As a special exception, if you link this library with other files to
produce an executable, this library does not by itself cause the
resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
package java.net;
import java.io.IOException;
/**
* @author Warren Levy <warrenl@cygnus.com>
* @date March 5, 1999.
*/
/**
* Written using on-line Java Platform 1.2 API Specification, as well
* as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
* Status: Believed complete and correct.
*/
/**
* This is an abstract class that is the superclass for classes that read
* objects from URL's. Calling the <code>getContent()</code> method in the
* <code>URL</code> class or the <code>URLConnection</code> class will cause
* an instance of a subclass of <code>ContentHandler</code> to be created for
* the MIME type of the object being downloaded from the URL. Thus, this
* class is seldom needed by applications/applets directly, but only
* indirectly through methods in other classes.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Warren Levy <warrenl@cygnus.com>
*/
public abstract class ContentHandler
{
public abstract Object getContent(URLConnection urlc) throws IOException;
}
/*************************************************************************/
/*
* Constructors
*/
/**
* Default, no-argument constructor.
*/
public ContentHandler() { }
/*************************************************************************/
/**
* This method reads from the <code>InputStream</code> of the passed in URL
* connection and uses the data downloaded to create an <code>Object</code>
* represening the content. For example, if the URL is pointing to a GIF
* file, this method might return an <code>Image</code> object. This method
* must be implemented by subclasses.
*
* @param urlc A <code>URLConnection</code> object to read data from.
*
* @return An object representing the data read
*
* @exception IOException If an error occurs
*/
public abstract Object getContent(URLConnection urlc) throws IOException;
} // class ContentHandler

189
libjava/java/net/DatagramPacket.java
View file

@ -1,35 +1,99 @@
// DatagramPacket.java - Represents packets in a connectionless protocol.
/* DatagramPacket.java -- Class to model a packet to be sent via UDP
Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1999, 2000 Free Software Foundation
This file is part of GNU Classpath.
This file is part of libgcj.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
As a special exception, if you link this library with other files to
produce an executable, this library does not by itself cause the
resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
package java.net;
/**
* @author Warren Levy <warrenl@cygnus.com>
* @date April 28, 1999.
*/
/**
/*
* Written using on-line Java Platform 1.2 API Specification, as well
* as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
* Status: Believed complete and correct.
*/
/**
* This class models a packet of data that is to be sent across the network
* using a connectionless protocol such as UDP. It contains the data
* to be send, as well as the destination address and port. Note that
* datagram packets can arrive in any order and are not guaranteed to be
* delivered at all.
* <p>
* This class can also be used for receiving data from the network.
* <p>
* Note that for all method below where the buffer length passed by the
* caller cannot exceed the actually length of the byte array passed as
* the buffer, if this condition is not true, then the method silently
* reduces the length value to maximum allowable value.
*
* Written using on-line Java Platform 1.2 API Specification, as well
* as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
* Status: Believed complete and correct.
*
* @author Warren Levy <warrenl@cygnus.com>
* @author Aarom M. Renn (arenn@urbanophile.com) (Documentation comments)
* @date April 28, 1999.
*/
public final class DatagramPacket
{
/**
* The data buffer to send
*/
private byte[] buffer;
/**
* This is the offset into the buffer to start sending from or receiving to.
*/
private int offset;
/**
* The length of the data buffer to send
*/
private int length;
/**
* The address to which the packet should be sent or from which it
* was received
*/
private InetAddress address;
/**
* The port to which the packet should be sent or from which it was
* was received.
*/
private int port;
// JDK1.2
/**
* This method initializes a new instance of <code>DatagramPacket</code>
* which has the specified buffer, offset, and length.
*
* @param buf The buffer for holding the incoming datagram.
* @param offset The offset into the buffer to start writing.
* @param length The maximum number of bytes to read.
*
* @since Java 1.2
*/
public DatagramPacket(byte[] buf, int offset, int length)
{
if (buf == null)
@ -49,12 +113,30 @@ public final class DatagramPacket
this.port = -1;
}
/**
* Initializes a new instance of <code>DatagramPacket</code> for
* receiving packets from the network.
*
* @param buf A buffer for storing the returned packet data
* @param length The length of the buffer (must be <= buf.length)
*/
public DatagramPacket(byte[] buf, int length)
{
this(buf, 0, length);
}
// JDK1.2
/**
* Initializes a new instance of <code>DatagramPacket</code> for
* transmitting packets across the network.
*
* @param buf A buffer containing the data to send
* @param offset The offset into the buffer to start writing from.
* @param len The length of the buffer (must be <= buf.length)
* @param addr The address to send to
* @param port The port to send to
*
* @since Java 1.2
*/
public DatagramPacket(byte[] buf, int offset, int length,
InetAddress address, int port)
{
@ -79,37 +161,86 @@ public final class DatagramPacket
this.port = port;
}
/**
* Initializes a new instance of <code>DatagramPacket</code> for
* transmitting packets across the network.
*
* @param buf A buffer containing the data to send
* @param length The length of the buffer (must be <= buf.length)
* @param address The address to send to
* @param port The port to send to
*/
public DatagramPacket(byte[] buf, int length, InetAddress address, int port)
{
this(buf, 0, length, address, port);
}
/**
* Returns the address that this packet is being sent to or, if it was used
* to receive a packet, the address that is was received from. If the
* constructor that doesn not take an address was used to create this object
* and no packet was actually read into this object, then this method
* returns <code>null</code>.
*
* @return The address for this packet.
*/
public synchronized InetAddress getAddress()
{
return address;
}
/**
* Returns the port number this packet is being sent to or, if it was used
* to receive a packet, the port that it was received from. If the
* constructor that doesn not take an address was used to create this object
* and no packet was actually read into this object, then this method
* will return 0.
*
* @return The port number for this packet
*/
public synchronized int getPort()
{
return port;
}
/**
* Returns the data buffer for this packet
*
* @return This packet's data buffer
*/
public synchronized byte[] getData()
{
return buffer;
}
// JDK1.2
/**
* This method returns the current offset value into the data buffer
* where data will be sent from.
*
* @return The buffer offset.
*
* @since Java 1.2
*/
public synchronized int getOffset()
{
return offset;
}
/**
* Returns the length of the data in the buffer
*
* @return The length of the data
*/
public synchronized int getLength()
{
return length;
}
/**
* This sets the address to which the data packet will be transmitted.
*
* @param addr The destination address
*/
public synchronized void setAddress(InetAddress iaddr)
{
if (iaddr == null)
@ -118,6 +249,11 @@ public final class DatagramPacket
address = iaddr;
}
/**
* This sets the port to which the data packet will be transmitted.
*
* @param port The destination port
*/
public synchronized void setPort(int iport)
{
if (iport < 0 || iport > 65535)
@ -126,6 +262,11 @@ public final class DatagramPacket
port = iport;
}
/**
* Sets the data buffer for this packet.
*
* @param buf The new buffer for this packet
*/
public synchronized void setData(byte[] buf)
{
// This form of setData requires setLength to be called separately
@ -136,7 +277,15 @@ public final class DatagramPacket
buffer = buf;
}
// JDK1.2
/**
* This method sets the data buffer for the packet.
*
* @param buf The byte array containing the data for this packet.
* @param offset The offset into the buffer to start reading data from.
* @param length The number of bytes of data in the buffer.
*
* @since Java 1.2
*/
public synchronized void setData(byte[] buf, int offset, int length)
{
// This form of setData must be used if offset is to be changed.
@ -156,6 +305,11 @@ public final class DatagramPacket
this.length = length;
}
/**
* Sets the length of the data in the buffer.
*
* @param length The new length. (Where len <= buf.length)
*/
public synchronized void setLength(int length)
{
if (length < 0)
@ -166,4 +320,5 @@ public final class DatagramPacket
this.length = length;
}
}
} // class DatagramPacket

150
libjava/java/net/MulticastSocket.java
View file

@ -1,50 +1,108 @@
// MulticastSocket.java
/* MulticastSocket.java -- Class for using multicast sockets
Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1999, 2000 Free Software Foundation
This file is part of GNU Classpath.
This file is part of libgcj.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
As a special exception, if you link this library with other files to
produce an executable, this library does not by itself cause the
resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */
package java.net;
import java.io.IOException;
/**
* @author Warren Levy <warrenl@cygnus.com>
* @date May 18, 1999.
*/
/**
/*
* Written using on-line Java Platform 1.2 API Specification, as well
* as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
* Status: Believed complete and correct.
*/
/**
* This class models a multicast UDP socket. A multicast address is a
* class D internet address (one whose most significant bits are 1110).
* A multicast group consists of a multicast address and a well known
* port number. All members of the group listening on that address and
* port will receive all the broadcasts to the group.
* <p>
* Please note that applets are not allowed to use multicast sockets
*
* Written using on-line Java Platform 1.2 API Specification, as well
* as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
* Status: Believed complete and correct.
*
* @author Warren Levy <warrenl@cygnus.com>
* @author Aaron M. Renn (arenn@urbanophile.com) (Documentation comments)
* @date May 18, 1999.
*/
public class MulticastSocket extends DatagramSocket
{
// FIXME: the local addr bound to the multicast socket can be reused;
// unlike unicast sockets. It binds to any available network interface.
// See p.1159 JCL book.
/**
* Create a MulticastSocket that this not bound to any address
*
* @exception IOException If an error occurs
*/
public MulticastSocket() throws IOException
{
super(0, ServerSocket.ANY_IF);
}
/**
* Create a multicast socket bound to the specified port
*
* @param The port to bind to
*
* @exception IOException If an error occurs
*/
public MulticastSocket(int port) throws IOException
{
super(port, ServerSocket.ANY_IF);
}
/**
* Returns the interface being used for multicast packets
*
* @return The multicast interface
*
* @exception SocketException If an error occurs
*/
public InetAddress getInterface() throws SocketException
{
// FIXME: Is it possible that an InetAddress wasn't returned from getOption?
return (InetAddress) impl.getOption(SocketOptions.IP_MULTICAST_IF);
}
// Deprecated in JDK1.2
/**
* Returns the current value of the "Time to Live" option. This is the
* number of hops a packet can make before it "expires". This method id
* deprecated. Use <code>getTimeToLive</code> instead.
*
* @return The TTL value
*
* @exception IOException If an error occurs
*
* @deprecated Replaced by getTimeToLive() in Java 1.2
*/
public byte getTTL() throws IOException
{
// Use getTTL here rather than getTimeToLive in case we're using an impl
@ -53,18 +111,43 @@ public class MulticastSocket extends DatagramSocket
return impl.getTTL();
}
// JDK1.2
/**
* Returns the current value of the "Time to Live" option. This is the
* number of hops a packet can make before it "expires".
*
* @return The TTL value
*
* @exception IOException If an error occurs
*
* @since Java 1.2
*/
public int getTimeToLive() throws IOException
{
return impl.getTimeToLive();
}
/**
* Sets the interface to use for multicast packets.
*
* @param addr The new interface to use
*
* @exception SocketException If an error occurs
*/
public void setInterface(InetAddress inf) throws SocketException
{
impl.setOption(SocketOptions.IP_MULTICAST_IF, inf);
}
// Deprecated in JDK1.2
/**
* Sets the "Time to Live" value for a socket. The value must be between
* 1 and 255.
*
* @param ttl The new TTL value
*
* @exception IOException If an error occurs
*
* @deprecated Replaced by <code>setTimeToLive</code> in Java 1.2
*/
public void setTTL(byte ttl) throws IOException
{
// Use setTTL here rather than setTimeToLive in case we're using an impl
@ -73,7 +156,16 @@ public class MulticastSocket extends DatagramSocket
impl.setTTL(ttl);
}
// JDK1.2
/**
* Sets the "Time to Live" value for a socket. The value must be between
* 1 and 255.
*
* @param ttl The new TTL value
*
* @exception IOException If an error occurs
*
* @since Java 1.2
*/
public void setTimeToLive(int ttl) throws IOException
{
if (ttl <= 0 || ttl > 255)
@ -82,6 +174,13 @@ public class MulticastSocket extends DatagramSocket
impl.setTimeToLive(ttl);
}
/**
* Joins the specified mulitcast group.
*
* @param addr The address of the group to join
*
* @exception IOException If an error occurs
*/
public void joinGroup(InetAddress mcastaddr) throws IOException
{
if (! mcastaddr.isMulticastAddress())
@ -94,6 +193,13 @@ public class MulticastSocket extends DatagramSocket
impl.join(mcastaddr);
}
/**
* Leaves the specified multicast group
*
* @param addr The address of the group to leave
*
* @exception IOException If an error occurs
*/
public void leaveGroup(InetAddress mcastaddr) throws IOException
{
if (! mcastaddr.isMulticastAddress())
@ -106,6 +212,16 @@ public class MulticastSocket extends DatagramSocket
impl.leave(mcastaddr);
}
/**
* Sends a packet of data to a multicast address with a TTL that is
* different from the default TTL on this socket. The default TTL for
* the socket is not changed.
*
* @param packet The packet of data to send
* @param ttl The TTL for this packet
*
* @exception IOException If an error occurs
*/
public synchronized void send(DatagramPacket p, byte ttl) throws IOException
{
SecurityManager s = System.getSecurityManager();
@ -123,4 +239,4 @@ public class MulticastSocket extends DatagramSocket
impl.send(p);
impl.setTimeToLive(oldttl);
}
}
} // class MulticastSocket