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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
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19
libjava/ChangeLog
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@ -1,3 +1,22 @@
2001-10-01 Mark Wielaard <mark@klomp.org>
* 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.
2001-09-30 Mark Wielaard <mark@klomp.org>
* java/io/DataInput.java: Merge with Classpath.

138
libjava/java/io/FileWriter.java
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@ -1,44 +1,126 @@
// FileWriter.java - Character output to a file.
/* FileWriter.java -- Convenience class for writing to files.
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1998, 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.
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. */
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: Complete to version 1.1.
*/
/**
* This is a convenience class for writing to files. It creates an
* <code>FileOutputStream</code> and initializes an
* <code>OutputStreamWriter</code> to write to it.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Tom Tromey <tromey@cygnus.com>
*/
public class FileWriter extends OutputStreamWriter
{
public FileWriter (String fileName) throws IOException
{
super (new FileOutputStream (fileName));
}
public FileWriter (String fileName, boolean append) throws IOException
{
super (new FileOutputStream (fileName, append));
}
/*************************************************************************/
public FileWriter (File file) throws IOException
{
super (new FileOutputStream (file));
}
public FileWriter (FileDescriptor fd)
{
super (new FileOutputStream (fd));
}
/*
* Constructors
*/
/**
* This method initializes a new <code>FileWriter</code> object to write
* to the specified <code>File</code> object.
*
* @param file The <code>File</code> object to write to.
*
* @param SecurityException If writing to this file is forbidden by the
* <code>SecurityManager</code>.
* @param IOException If any other error occurs
*/
public
FileWriter(File file) throws SecurityException, IOException
{
super(new FileOutputStream(file));
}
/*************************************************************************/
/**
* This method initializes a new <code>FileWriter</code> object to write
* to the specified <code>FileDescriptor</code> object.
*
* @param fd The <code>FileDescriptor</code> object to write to
*
* @param SecurityException If writing to this file is forbidden by the
* <code>SecurityManager</code>.
*/
public
FileWriter(FileDescriptor fd) throws SecurityException
{
super(new FileOutputStream(fd));
}
/*************************************************************************/
/**
* This method intializes a new <code>FileWriter</code> object to write to the
* specified named file.
*
* @param name The name of the file to write to
*
* @param SecurityException If writing to this file is forbidden by the
* <code>SecurityManager</code>.
* @param IOException If any other error occurs
*/
public
FileWriter(String name) throws IOException
{
super(new FileOutputStream(name));
}
/*************************************************************************/
/**
* This method intializes a new <code>FileWriter</code> object to write to the
* specified named file. This form of the constructor allows the caller
* to determin whether data should be written starting at the beginning or
* the end of the file.
*
* @param name The name of the file to write to
* @param append <code>true</code> to start adding data at the end of the
* file, <code>false</code> otherwise.
*
* @param SecurityException If writing to this file is forbidden by the
* <code>SecurityManager</code>.
* @param IOException If any other error occurs
*/
public
FileWriter(String name, boolean append) throws IOException
{
super(new FileOutputStream(name, append));
}
} // class FileWriter

274
libjava/java/io/FilterInputStream.java
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@ -1,75 +1,237 @@
/* Copyright (C) 1998, 1999 Free Software Foundation
/* FilterInputStream.java -- Base class for classes that filter input
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
This file is part of libgcj.
This file is part of GNU Classpath.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
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.
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.io;
/**
* @author Warren Levy <warrenl@cygnus.com>
* @date October 8, 1998.
*/
/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
* "The Java Language Specification", ISBN 0-201-63451-1
* plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
* Status: Believed complete and correct.
*/
/**
* This is the common superclass of all standard classes that filter
* input. It acts as a layer on top of an underlying <code>InputStream</code>
* and simply redirects calls made to it to the subordinate InputStream
* instead. Subclasses of this class perform additional filtering
* functions in addition to simply redirecting the call.
* <p>
* This class is not abstract. However, since it only redirects calls
* to a subordinate <code>InputStream</code> without adding any functionality
* on top of it, this class should not be used directly. Instead, various
* subclasses of this class should be used. This is enforced with a
* protected constructor. Do not try to hack around it.
* <p>
* When creating a subclass of <code>FilterInputStream</code>, override the
* appropriate methods to implement the desired filtering. However, note
* that the <code>read(byte[])</code> method does not need to be overridden
* as this class redirects calls to that method to
* <code>read(byte[], int, int)</code> instead of to the subordinate
* <code>InputStream read(byte[])</code> method.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Warren Levy <warrenl@cygnus.com>
*/
public class FilterInputStream extends InputStream
{
/* The input stream to be filtered. */
protected InputStream in;
protected FilterInputStream(InputStream in)
{
this.in = in;
}
/*************************************************************************/
public int available() throws IOException
{
return in.available();
}
/*
* Instance Variables
*/
public void close() throws IOException
{
in.close();
}
/**
* This is the subordinate <code>InputStream</code> to which method calls
* are redirected
*/
protected InputStream in;
public synchronized void mark(int readlimit)
{
in.mark(readlimit);
}
/*************************************************************************/
public boolean markSupported()
{
return in.markSupported();
}
/*
* Constructors
*/
public int read() throws IOException
{
return in.read();
}
public int read(byte[] b) throws IOException
{
return read(b, 0, b.length);
}
public int read(byte[] b, int off, int len) throws IOException
{
return in.read(b, off, len);
}
public synchronized void reset() throws IOException
{
in.reset();
}
public long skip(long n) throws IOException
{
return in.skip(n);
}
/**
* Create a <code>FilterInputStream</code> with the specified subordinate
* <code>InputStream</code>.
*
* @param in The subordinate <code>InputStream</code>
*/
protected
FilterInputStream(InputStream in)
{
this.in = in;
}
/*************************************************************************/
/*
* Instance Methods
*/
/**
* Calls the <code>in.mark(int)</code> method.
*
* @param readlimit The parameter passed to <code>in.mark(int)</code>
*/
public void
mark(int readlimit)
{
in.mark(readlimit);
}
/*************************************************************************/
/**
* Calls the <code>in.markSupported()</code> method.
*
* @return <code>true</code> if mark/reset is supported, <code>false</code>
* otherwise
*/
public boolean
markSupported()
{
return(in.markSupported());
}
/*************************************************************************/
/**
* Calls the <code>in.reset()</code> method.
*
* @exception IOException If an error occurs
*/
public void
reset() throws IOException
{
in.reset();
}
/*************************************************************************/
/**
* Calls the <code>in.available()</code> method.
*
* @return The value returned from <code>in.available()</code>
*
* @exception IOException If an error occurs
*/
public int
available() throws IOException
{
return(in.available());
}
/*************************************************************************/
/**
* Calls the <code>in.skip(long)</code> method
*
* @param The requested number of bytes to skip.
*
* @return The value returned from <code>in.skip(long)</code>
*
* @exception IOException If an error occurs
*/
public long
skip(long num_bytes) throws IOException
{
return(in.skip(num_bytes));
}
/*************************************************************************/
/**
* Calls the <code>in.read()</code> method
*
* @return The value returned from <code>in.read()</code>
*
* @exception IOException If an error occurs
*/
public int
read() throws IOException
{
return(in.read());
}
/*************************************************************************/
/**
* Calls the <code>read(byte[], int, int)</code> overloaded method. Note that
* this method does not redirect its call directly to a corresponding
* method in <code>in</code>. This allows subclasses to override only the
* three argument version of <code>read</code>.
*
* @param buf The buffer to read bytes into
*
* @return The value retured from <code>in.read(byte[], int, int)</code>
*
* @exception IOException If an error occurs
*/
public int
read(byte[] buf) throws IOException
{
return(read(buf, 0, buf.length));
}
/*************************************************************************/
/**
* Calls the <code>in.read(byte[], int, int)</code> method.
*
* @param buf The buffer to read bytes into
* @param offset The index into the buffer to start storing bytes
* @param len The maximum number of bytes to read.
*
* @return The value retured from <code>in.read(byte[], int, int)</code>
*
* @exception IOException If an error occurs
*/
public int
read(byte[] buf, int offset, int len) throws IOException
{
return(in.read(buf, offset, len));
}
/*************************************************************************/
/**
* This method closes the input stream by closing the input stream that
* this object is filtering. Future attempts to access this stream may
* throw an exception.
*
* @exception IOException If an error occurs
*/
public void
close() throws IOException
{
in.close();
}
} // class FilterInputStream

193
libjava/java/io/FilterOutputStream.java
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@ -1,62 +1,171 @@
// FilterOutputStream.java - A filtered stream
/* FilterOutputStream.java -- Parent class for output streams that filter
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1998, 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.
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. */
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 24, 1998
*/
/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
* "The Java Language Specification", ISBN 0-201-63451-1
* Status: Complete to version 1.1.
*/
/**
* This class is the common superclass of output stream classes that
* filter the output they write. These classes typically transform the
* data in some way prior to writing it out to another underlying
* <code>OutputStream</code>. This class simply overrides all the
* methods in <code>OutputStream</code> to redirect them to the
* underlying stream. Subclasses provide actual filtering.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Tom Tromey <tromey@cygnus.com>
*/
public class FilterOutputStream extends OutputStream
{
public void close () throws IOException
{
flush ();
out.close();
}
public FilterOutputStream (OutputStream ox)
{
out = ox;
}
/*************************************************************************/
public void flush () throws IOException
{
out.flush();
}
/*
* Instance Variables
*/
public void write (int b) throws IOException
{
out.write(b);
}
/**
* This is the subordinate <code>OutputStream</code> that this class
* redirects its method calls to.
*/
protected OutputStream out;
public void write (byte[] b) throws IOException, NullPointerException
{
// Don't do checking here, per Java Lang Spec.
write (b, 0, b.length);
}
/*************************************************************************/
public void write (byte[] b, int off, int len)
throws IOException, NullPointerException, IndexOutOfBoundsException
{
// Don't do checking here, per Java Lang Spec.
for (int i=0; i < len; i++)
write (b[off + i]);
}
/*
* Constructors
*/
// The output stream.
protected OutputStream out;
/**
* This method initializes an instance of <code>FilterOutputStream</code>
* to write to the specified subordinate <code>OutputStream</code>.
*
* @param out The <code>OutputStream</code> to write to
*/
public
FilterOutputStream(OutputStream out)
{
this.out = out;
}
/*************************************************************************/
/*
* Instance Methods
*/
/**
* This method closes the underlying <code>OutputStream</code>. Any
* further attempts to write to this stream may throw an exception.
*
* @exception IOException If an error occurs
*/
public void
close() throws IOException
{
flush();
out.close();
}
/*************************************************************************/
/**
* This method attempt to flush all buffered output to be written to the
* underlying output sink.
*
* @exception IOException If an error occurs
*/
public void
flush() throws IOException
{
out.flush();
}
/*************************************************************************/
/**
* This method writes a single byte of output to the underlying
* <code>OutputStream</code>.
*
* @param b The byte to write, passed as an int.
*
* @exception IOException If an error occurs
*/
public void
write(int b) throws IOException
{
out.write(b);
}
/*************************************************************************/
/**
* This method writes all the bytes in the specified array to the underlying
* <code>OutputStream</code>. It does this by calling the three parameter
* version of this method - <code>write(byte[], int, int)</code> in this
* class instead of writing to the underlying <code>OutputStream</code>
* directly. This allows most subclasses to avoid overriding this method.
*
* @param buf The byte array to write bytes from
*
* @exception IOException If an error occurs
*/
public void
write(byte[] buf) throws IOException
{
// Don't do checking here, per Java Lang Spec.
write(buf, 0, buf.length);
}
/*************************************************************************/
/**
* This method calls the <code>write(int)</code> method <code>len</code>
* times for all bytes from the array <code>buf</code> starting at index
* <code>offset</code>. Subclasses should overwrite this method to get a
* more efficient implementation.
*
* @param buf The byte array to write bytes from
* @param offset The index into the array to start writing bytes from
* @param len The number of bytes to write
*
* @exception IOException If an error occurs
*/
public void
write(byte[] buf, int offset, int len) throws IOException
{
// Don't do checking here, per Java Lang Spec.
for (int i=0; i < len; i++)
write(buf[offset + i]);
}
} // class FilterOutputStream

251
libjava/java/io/FilterReader.java
View File

@ -1,75 +1,214 @@
/* Copyright (C) 1998, 1999, 2001 Free Software Foundation
/* FilterReader.java -- Base class for char stream classes that filter input
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
This file is part of libgcj.
This file is part of GNU Classpath.
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.
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. */
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 Warren Levy <warrenl@cygnus.com>
* @date October 15, 1998.
*/
/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
* "The Java Language Specification", ISBN 0-201-63451-1
* plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
* Status: Believed complete and correct.
*/
/**
* This is the common superclass of all standard classes that filter
* input. It acts as a layer on top of an underlying <code>Reader</code>
* and simply redirects calls made to it to the subordinate Reader
* instead. Subclasses of this class perform additional filtering
* functions in addition to simply redirecting the call.
* <p>
* When creating a subclass of <code>FilterReader</code>, override the
* appropriate methods to implement the desired filtering. However, note
* that the <code>read(char[])</code> method does not need to be overridden
* as this class redirects calls to that method to
* <code>read(yte[], int, int)</code> instead of to the subordinate
* <code>Reader} read(yte[])</code> method.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Warren Levy <warrenl@cygnus.com>
*/
public abstract class FilterReader extends Reader
{
/* The input stream to be filtered. */
protected Reader in;
protected FilterReader(Reader in)
{
super(in.lock);
this.in = in;
}
/*************************************************************************/
public void close() throws IOException
{
// We used to set `in = null' here. We don't, though, because
// that is the simplest way to ensure that read-after-close will
// throw the appropriate exception -- we rely on the filtered
// stream to do it.
in.close();
}
/*
* Instance Variables
*/
public synchronized void mark(int readlimit) throws IOException
{
in.mark(readlimit);
}
/**
* This is the subordinate <code>Reader</code> to which method calls
* are redirected
*/
protected Reader in;
public boolean markSupported()
{
return in.markSupported();
}
/*************************************************************************/
public int read() throws IOException
{
return in.read();
}
/*
* Constructors
*/
public int read(char[] b, int off, int len) throws IOException
{
return in.read(b, off, len);
}
public boolean ready() throws IOException
{
return in.ready();
}
public synchronized void reset() throws IOException
{
in.reset();
}
public long skip(long n) throws IOException
{
return in.skip(n);
}
/**
* Create a <code>FilterReader</code> with the specified subordinate
* <code>Reader</code>.
* The <code>lock</code> of the new <code>FilterReader</code> will be set
* to <code>in.lock</code>.
*
* @param in The subordinate <code>Reader</code>
*/
protected
FilterReader(Reader in)
{
super(in.lock);
this.in = in;
}
/*************************************************************************/
/*
* Instance Methods
*/
/**
* Calls the <code>in.mark(int)</code> method.
*
* @param readlimit The parameter passed to <code>in.mark(int)</code>
*
* @exception IOException If an error occurs
*/
public void
mark(int readlimit) throws IOException
{
in.mark(readlimit);
}
/*************************************************************************/
/**
* Calls the <code>in.markSupported()</code> method.
*
* @return <code>true</code> if mark/reset is supported, <code>false</code> otherwise
*/
public boolean
markSupported()
{
return(in.markSupported());
}
/*************************************************************************/
/**
* Calls the <code>in.reset()</code> method.
*
* @exception IOException If an error occurs
*/
public void
reset() throws IOException
{
in.reset();
}
/*************************************************************************/
/**
* Calls the <code>in.read()</code> method.
*
* @return The value returned from <code>in.available()</code>
*
* @exception IOException If an error occurs
*/
public boolean
ready() throws IOException
{
return(in.ready());
}
/*************************************************************************/
/**
* Calls the <code>in.skip(long)</code> method
*
* @param The requested number of chars to skip.
*
* @return The value returned from <code>in.skip(long)</code>
*
* @exception IOException If an error occurs
*/
public long
skip(long num_chars) throws IOException
{
return(in.skip(num_chars));
}
/*************************************************************************/
/**
* Calls the <code>in.read()</code> method
*
* @return The value returned from <code>in.read()</code>
*
* @exception IOException If an error occurs
*/
public int
read() throws IOException
{
return(in.read());
}
/*************************************************************************/
/**
* Calls the <code>in.read(char[], int, int)</code> method.
*
* @param buf The buffer to read chars into
* @param offset The index into the buffer to start storing chars
* @param len The maximum number of chars to read.
*
* @return The value retured from <code>in.read(char[], int, int)</code>
*
* @exception IOException If an error occurs
*/
public int
read(char[] buf, int offset, int len) throws IOException
{
return(in.read(buf, offset, len));
}
/*************************************************************************/
/**
* This method closes the stream by calling the <code>close()</code> method
* of the underlying stream.
*
* @exception IOException If an error occurs
*/
public void
close() throws IOException
{
in.close();
}
} // class FilterReader

186
libjava/java/io/FilterWriter.java
View File

@ -1,58 +1,168 @@
// FilterWriter.java - Filtered character output stream.
/* FilterWriter.java -- Parent class for output streams that filter
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1998, 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.
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. */
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: Complete to version 1.1.
*/
/**
* This class is the common superclass of output character stream classes
* that filter the output they write. These classes typically transform the
* data in some way prior to writing it out to another underlying
* <code>Writer</code>. This class simply overrides all the
* methods in <code>Writer</code> to redirect them to the
* underlying stream. Subclasses provide actual filtering.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Tom Tromey <tromey@cygnus.com>
*/
public abstract class FilterWriter extends Writer
{
public void close () throws IOException
{
out.close();
}
protected FilterWriter (Writer ox)
{
super (ox);
out = ox;
}
/*************************************************************************/
public void flush () throws IOException
{
out.flush();
}
/*
* Instance Variables
*/
public void write (int oneChar) throws IOException
{
out.write(oneChar);
}
/**
* This is the subordinate <code>Writer</code> that this class
* redirects its method calls to.
*/
protected Writer out;
public void write (char[] buffer, int offset, int count) throws IOException
{
out.write(buffer, offset, count);
}
/*************************************************************************/
public void write (String str, int offset, int count) throws IOException
{
out.write(str, offset, count);
}
/*
* Constructors
*/
// Where our writes should go.
protected Writer out;
/**
* This method initializes an instance of <code>FilterWriter</code>
* to write to the specified subordinate <code>Writer</code>.
* The given <code>Writer</code> will be used as <code>lock</code> for
* the newly created <code>FilterWriter</code>.
*
* @param out The <code>Writer</code> to write to
*/
protected
FilterWriter(Writer out)
{
super(out);
this.out = out;
}
/*************************************************************************/
/*
* Instance Methods
*/
/**
* This method closes the underlying <code>Writer</code>. Any
* further attempts to write to this stream may throw an exception.
*
* @exception IOException If an error occurs
*/
public void
close() throws IOException
{
out.close();
}
/*************************************************************************/
/**
* This method attempt to flush all buffered output to be written to the
* underlying output sink.
*
* @exception IOException If an error occurs
*/
public void
flush() throws IOException
{
out.flush();
}
/*************************************************************************/
/**
* This method writes a single char of output to the underlying
* <code>Writer</code>.
*
* @param b The char to write, passed as an int.
*
* @exception IOException If an error occurs
*/
public void
write(int b) throws IOException
{
out.write(b);
}
/*************************************************************************/
/**
* This method writes <code>len</code> chars from the array <code>buf</code>
* starting at index <code>offset</code> to the underlying
* <code>Writer</code>.
*
* @param buf The char array to write chars from
* @param offset The index into the array to start writing chars from
* @param len The number of chars to write
*
* @exception IOException If an error occurs
*/
public void
write(char[] buf, int offset, int len) throws IOException
{
out.write(buf, offset, len);
}
/*************************************************************************/
/**
* This method writes <code>len</code> chars from the <code>String</code>
* starting at position <code>offset</code>.
*
* @param str The <code>String</code> that is to be written
* @param offset The character offset into the <code>String</code> to start writing from
* @param len The number of chars to write
*
* @exception IOException If an error occurs
*/
public void
write(String str, int offset, int len) throws IOException
{
out.write(str, offset, len);
}
} // class FilterWriter

242
libjava/java/io/Writer.java
View File

@ -1,67 +1,211 @@
/* Copyright (C) 1998, 1999 Free Software Foundation
/* Writer.java -- Base class for character output streams
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
This file is part of libgcj.
This file is part of GNU Classpath.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
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.
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.io;
/**
* @author Per Bothner <bothner@cygnus.com>
* @date April 17, 1998.
*/
/* Written using "Java Class Libraries", 2nd edition, plus online
* API docs for JDK 1.2 beta from http://www.javasoft.com.
* Status: Believed complete and correct.
* However, write(String, int, int) should be made a native method.
*/
/**
* This abstract class forms the base of the hierarchy of classes that
* write output as a stream of chars. It provides a common set of methods
* for writing chars to stream. Subclasses implement and/or extend these
* methods to write chars in a particular manner or to a particular
* destination such as a file on disk or network connection.
*
* @author Aaron M. Renn (arenn@urbanophile.com)
* @author Per Bothner <bothner@cygnus.com>
*/
public abstract class Writer
{
protected Object lock;
protected Writer ()
{
lock = this;
}
/*************************************************************************/
protected Writer (Object lock)
{
this.lock = lock;
}
/**
* This is the object used to synchronize criticial code sections for
* thread safety. Subclasses should use this field instead of using
* synchronized methods or explicity synchronizations on <code>this</code>
*/
protected Object lock;
abstract public void close() throws IOException;
/*************************************************************************/
abstract public void flush() throws IOException;
abstract public void write(char[] buf, int offset, int count)
throws IOException;
public void write(char[] buf) throws IOException
{
write(buf, 0, buf.length);
}
public void write(int ch) throws IOException
{
char[] buf = new char[1];
buf[0] = (char) ch;
write(buf, 0, 1);
}
// FIXME - re-write using native code to not require copied buffer.
public void write (String str, int offset, int count) throws IOException
{
char[] buf = new char[count];
str.getChars(offset, offset + count, buf, 0);
write(buf, 0, count);
}
public void write (String str) throws IOException
{
write(str, 0, str.length());
}
/*
* Constructors
*/
/**
* This is the default no-argument constructor for this class. This method
* will set up the class to synchronize criticial sections on itself.
*/
protected
Writer()
{
lock = this;
}
/*************************************************************************/
/**
* This method initializes a <code>Writer</code> that will synchronize
* on the specified <code>Object</code>.
*
* @param obj The <code>Object</code> to use for synchronizing critical
* sections
*/
protected
Writer(Object lock)
{
this.lock = lock;
}
/*************************************************************************/
/*
* Instance Methods
*/
/**
* This method forces any data that may have been buffered to be written
* to the underlying output device. Please note that the host environment
* might perform its own buffering unbeknowst to Java. In that case, a
* write made (for example, to a disk drive) might be cached in OS
* buffers instead of actually being written to disk.
*
* @exception IOException If an error occurs
*/
public abstract void
flush() throws IOException;
/*************************************************************************/
/**
* This method closes the stream. Any internal or native resources associated
* with this stream are freed. Any subsequent attempt to access the stream
* might throw an exception.
* <p>
* This method in this class does nothing.
*
* @exception IOException If an error occurs
*/
public abstract void
close() throws IOException;
/*************************************************************************/
/**
* This method writes a single char to the output stream.
*
* @param b The char to be written to the output stream, passed as an int
*
* @exception IOException If an error occurs
*/
public void
write(int b) throws IOException
{
char[] buf = new char[1];
buf[0] = (char)b;
write(buf, 0, buf.length);
}
/*************************************************************************/
/**
* This method all the writes char from the passed array to the output stream.
* This method is equivalent to <code>write(buf, 0, buf.length)</code> which
* is exactly how it is implemented in this class.
*
* @param buf The array of char to write
*
* @exception IOException If an error occurs
*/
public void
write(char[] buf) throws IOException
{
write(buf, 0, buf.length);
}
/*************************************************************************/
/**
* This method writes <code>len</code> char from the specified array
* <code>buf</code> starting at index <code>offset</code> into the array.
* <p>
* Subclasses must provide an implementation of this abstract method.
*
* @param buf The array of char to write from
* @param offset The index into the array to start writing from
* @param len The number of char to write
*
* @exception IOException If an error occurs
*/
public abstract void
write(char[] buf, int offset, int len) throws IOException;
/*************************************************************************/
/**
* This method writes all the characters in a <code>String</code> to the
* output.
*
* @param str The <code>String</code> whose chars are to be written.
*
* @param IOException If an error occurs
*/
public void
write(String str) throws IOException
{
write(str, 0, str.length());
}
/*************************************************************************/
/**
* This method writes <code>len</code> chars from the <code>String</code>
* starting at position <code>offset</code>.
*
* @param str The <code>String</code> that is to be written
* @param offset The character offset into the <code>String</code> to start
* writing from
* @param len The number of chars to write
*
* @exception IOException If an error occurs
*/
public void
write(String str, int offset, int len) throws IOException
{
// FIXME - for libgcj re-write using native code to not require copied buffer.
char[] buf = new char[len];
str.getChars(offset, offset + len, buf, 0);
write(buf, 0, len);
}
} // class Writer

126
libjava/java/lang/Compiler.java
View File

@ -1,53 +1,111 @@
// Compiler.java - Control byte->machine code compiler.
/* Compiler.java -- Interface for implementing a method to override
Object.clone()comparaing objects to obtain an ordering
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1998, 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.
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. */
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
package java.lang;
/**
* @author Tom Tromey <tromey@cygnus.com>
* @date October 23, 1998.
*/
/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
*/
public final class Compiler
/**
* The <code>Compiler</code> class is a place holder for a JIT
* compiler implementation does nothing unless there is such a
* compiler by default.
* <p>
* The system property <code>java.compiler</code> may contain the name
* of a library to load with <code>System.loadLibrary</code> when the
* virtual machine first starts. If so and loading the library succeeds,
* then a function by the name of <code>java_lang_Compiler_start()</code>
* in that library is called.
*
* Note that a VM might not have implemented any of this.
*
* @author Tom Tromey <tromey@cygnus.com>
*
* @since JDK 1.0
* @see System#getProperty(java.lang.String)
* @see System#getProperty(java.lang.String,java.lang.String)
* @see System#loadLibrary(java.lang.String)
*/
public final class Compiler
{
public static Object command (Object arg)
{
// Our implementation defines this to a no-op.
return null;
}
public static boolean compileClass (Class oneClass)
{
// Never succeed.
return false;
}
public static boolean compileClasses (String classNames)
{
// Note the incredibly lame interface. Always fail.
return false;
}
public static void disable ()
/**
* Don't allow new `Compiler's to be made.
*/
private Compiler ()
{
}
public static void enable ()
/**
* Compile the class named by <code>oneClass</code>.
*
* @param oneClass the class to compile
* @return <code>false</code> if no compiler is available or
* compilation failed and <code>true</code> if compilation succeeded.
*/
public static boolean compileClass (Class oneClass)
{
// Never succeed.
return false;
}
/**
* Compile the classes whose name matches <code>classNames/code>.
*
* @param classNames the name of classes to compile
* @return <code>false</code> if no compiler is available or
* compilation failed and <code>true</code> if compilation succeeded.
*/
public static boolean compileClasses (String classNames)
{
// Note the incredibly lame interface. Always fail.
return false;
}
// Don't allow new `Compiler's to be made.
private Compiler ()
/**
* This method examines the argument and performs an operation
* according to the compilers documentation. No specific operation
* is required.
*/
public static Object command (Object arg)
{
// Our implementation defines this to a no-op.
return null;
}
/**
* Calling <code>Compiler.enable()</code> will cause the compiler
* to resume operation if it was previously disabled.
*/
public static void enable () { }
/**
* Calling <code>Compiler.disable()</code> will cause the compiler
* to be suspended.
*/
public static void disable () { }
}

110
libjava/java/lang/Process.java
View File

@ -1,30 +1,106 @@
// Process.java - Represent spawned system process.
/* Process.java - Represent spawned system process.
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1998, 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.
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. */
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
package java.lang;
import java.io.*;
/**
* @author Tom Tromey <tromey@cygnus.com>
* @date October 23, 1998.
*/
import java.io.OutputStream;
import java.io.InputStream;
/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
*/
/**
* An instance of a subclass of <code>Process</code> is created by the
* <code>Runtime.exec</code> methods. Methods in <code>Process</code>
* provide a means to send input to a process, obtain the output from a
* subprocess, destroy a subprocess, obtain the exit value from a
* subprocess, and wait for a subprocess to complete.
*
* @since JDK 1.0
*
* @author Brian Jones
* @author Tom Tromey <tromey@cygnus.com>
*/
public abstract class Process
{
abstract public void destroy ();
abstract public int exitValue ();
abstract public InputStream getErrorStream ();
abstract public InputStream getInputStream ();
abstract public OutputStream getOutputStream ();
abstract public int waitFor () throws InterruptedException;
/**
* Empty constructor does nothing.
*/
public Process() { }
/**
* Obtain the output stream of the subprocess. It may help to
* associate this stream as the redirected STDIN file descriptor of
* the subprocess.
*/
public abstract OutputStream getOutputStream();
/**
* Obtain the input stream of the subprocess. It may help to
* associate this stream as the redirected STDOUT file descriptor of
* the subprocess.
*/
public abstract InputStream getInputStream();
/**
* Obtain the error input stream of the subprocess. It may help to
* associate this stream as the redirected STDERR file descriptor of
* the subprocess.
*/
public abstract InputStream getErrorStream();
/**
* The thread calling <code>waitFor</code> will block until the subprocess
* has terminated. If the process has already terminated then the method
* immediately returns with the exit value of the subprocess.
*
* @returns the exit value of the subprocess. A return of <code>0</code>
* denotes normal process termination by convention.
*
* @throws InterruptedException is thrown if another thread interrupts
* the waiting thread. The waiting thread stops waiting.
*/
public abstract int waitFor()
throws InterruptedException;
/**
* When a process terminates there is associated with that termination
* an exit value for the process to indicate why it terminated. A return
* of <code>0</code> denotes normal process termination by convention.
*
* @returns the exit value of the subprocess.
* @throws IllegalThreadStateException is thrown if the subprocess
* represented by the subclass of this class has not yet terminated.
*/
public abstract int exitValue();
/**
* Kills the subprocess and all of its children forcibly.
*/
public abstract void destroy();
}

58
libjava/java/lang/Void.java
View File

@ -1,30 +1,56 @@
/* Copyright (C) 1998, 1999 Free Software Foundation
/* java.lang.Void
Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
This file is part of libgcj.
This file is part of GNU Classpath.
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.
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. */
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
package java.lang;
/**
* @author Per Bothner <bothner@cygnus.com>
* @date April 18, 1998.
*/
/* Written using "Java Class Libraries", 2nd edition, plus online
* API docs for JDK 1.2 beta from http://www.javasoft.com.
* Status: Complete.
*/
/**
* Void is a placeholder class so that the variable Void.TYPE can be
* supported for reflection return types.
*
* @author Paul Fisher
* @author John Keiser
* @author Per Bothner <bothner@cygnus.com>
* @since JDK1.1
*/
public final class Void
{
// This initialization is seemingly circular, but it is accepted
// by javac, and is handled specially by gcc.
public final static Class TYPE = void.class;
/**
* The return type <code>void</code> is represented by this
* <code>Class</code> object.
*/
public static final Class TYPE = VMClassLoader.getPrimitiveClass("void");
// Don't allow Void objects to be made.
private Void ()
{
}
/**
* Don't allow Void objects to be made.
*/
private Void() { }
}

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