FileWriter.java: Merge with Classpath.
* 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
Mark Wielaard
parent
be55d07d6f
commit
477946a63d
13 changed files with 1630 additions and 383 deletions
|
|
@ -1,44 +1,126 @@
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|||
// FileWriter.java - Character output to a file.
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/* FileWriter.java -- Convenience class for writing to files.
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Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
|
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|
||||
/* 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. */
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package java.io;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date September 25, 1998
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*/
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||||
|
||||
/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
|
||||
* "The Java Language Specification", ISBN 0-201-63451-1
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* Status: Complete to version 1.1.
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*/
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/**
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* This is a convenience class for writing to files. It creates an
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* <code>FileOutputStream</code> and initializes an
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* <code>OutputStreamWriter</code> to write to it.
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*
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* @author Aaron M. Renn (arenn@urbanophile.com)
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* @author Tom Tromey <tromey@cygnus.com>
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*/
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public class FileWriter extends OutputStreamWriter
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{
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public FileWriter (String fileName) throws IOException
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{
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super (new FileOutputStream (fileName));
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}
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public FileWriter (String fileName, boolean append) throws IOException
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{
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super (new FileOutputStream (fileName, append));
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}
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/*************************************************************************/
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public FileWriter (File file) throws IOException
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{
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super (new FileOutputStream (file));
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}
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public FileWriter (FileDescriptor fd)
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{
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super (new FileOutputStream (fd));
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}
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/*
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* Constructors
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*/
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/**
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* This method initializes a new <code>FileWriter</code> object to write
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* to the specified <code>File</code> object.
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*
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* @param file The <code>File</code> object to write to.
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*
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* @param SecurityException If writing to this file is forbidden by the
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* <code>SecurityManager</code>.
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* @param IOException If any other error occurs
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*/
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public
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FileWriter(File file) throws SecurityException, IOException
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{
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super(new FileOutputStream(file));
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}
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/*************************************************************************/
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/**
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* This method initializes a new <code>FileWriter</code> object to write
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* to the specified <code>FileDescriptor</code> object.
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*
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* @param fd The <code>FileDescriptor</code> object to write to
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*
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* @param SecurityException If writing to this file is forbidden by the
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* <code>SecurityManager</code>.
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*/
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public
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FileWriter(FileDescriptor fd) throws SecurityException
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{
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super(new FileOutputStream(fd));
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}
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/*************************************************************************/
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/**
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* This method intializes a new <code>FileWriter</code> object to write to the
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* specified named file.
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*
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* @param name The name of the file to write to
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*
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* @param SecurityException If writing to this file is forbidden by the
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* <code>SecurityManager</code>.
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* @param IOException If any other error occurs
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*/
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public
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FileWriter(String name) throws IOException
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{
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super(new FileOutputStream(name));
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}
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/*************************************************************************/
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/**
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* This method intializes a new <code>FileWriter</code> object to write to the
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* specified named file. This form of the constructor allows the caller
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* to determin whether data should be written starting at the beginning or
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||||
* the end of the file.
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||||
*
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* @param name The name of the file to write to
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* @param append <code>true</code> to start adding data at the end of the
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* file, <code>false</code> otherwise.
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*
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* @param SecurityException If writing to this file is forbidden by the
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* <code>SecurityManager</code>.
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* @param IOException If any other error occurs
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*/
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public
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FileWriter(String name, boolean append) throws IOException
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{
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super(new FileOutputStream(name, append));
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}
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|
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} // class FileWriter
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|
|
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|
|
@ -1,75 +1,237 @@
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/* Copyright (C) 1998, 1999 Free Software Foundation
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/* FilterInputStream.java -- Base class for classes that filter input
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Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
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||||
|
||||
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. */
|
||||
|
||||
|
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package java.io;
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/**
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* @author Warren Levy <warrenl@cygnus.com>
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* @date October 8, 1998.
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||||
*/
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||||
/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
|
||||
* "The Java Language Specification", ISBN 0-201-63451-1
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||||
* plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
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* Status: Believed complete and correct.
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*/
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|
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/**
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* This is the common superclass of all standard classes that filter
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* input. It acts as a layer on top of an underlying <code>InputStream</code>
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* and simply redirects calls made to it to the subordinate InputStream
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* instead. Subclasses of this class perform additional filtering
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||||
* functions in addition to simply redirecting the call.
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* <p>
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* This class is not abstract. However, since it only redirects calls
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* to a subordinate <code>InputStream</code> without adding any functionality
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* on top of it, this class should not be used directly. Instead, various
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* subclasses of this class should be used. This is enforced with a
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* protected constructor. Do not try to hack around it.
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* <p>
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* When creating a subclass of <code>FilterInputStream</code>, override the
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* appropriate methods to implement the desired filtering. However, note
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* that the <code>read(byte[])</code> method does not need to be overridden
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* as this class redirects calls to that method to
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* <code>read(byte[], int, int)</code> instead of to the subordinate
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* <code>InputStream read(byte[])</code> method.
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*
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* @author Aaron M. Renn (arenn@urbanophile.com)
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* @author Warren Levy <warrenl@cygnus.com>
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*/
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public class FilterInputStream extends InputStream
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{
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/* The input stream to be filtered. */
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protected InputStream in;
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protected FilterInputStream(InputStream in)
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{
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this.in = in;
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}
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/*************************************************************************/
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public int available() throws IOException
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{
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return in.available();
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}
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/*
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* Instance Variables
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*/
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public void close() throws IOException
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{
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in.close();
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}
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/**
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* This is the subordinate <code>InputStream</code> to which method calls
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* are redirected
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*/
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protected InputStream in;
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public synchronized void mark(int readlimit)
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||||
{
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||||
in.mark(readlimit);
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||||
}
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||||
/*************************************************************************/
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||||
|
||||
public boolean markSupported()
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{
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return in.markSupported();
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}
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||||
/*
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||||
* Constructors
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||||
*/
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||||
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||||
public int read() throws IOException
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{
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return in.read();
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||||
}
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||||
|
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public int read(byte[] b) throws IOException
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||||
{
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||||
return read(b, 0, b.length);
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||||
}
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||||
|
||||
public int read(byte[] b, int off, int len) throws IOException
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||||
{
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||||
return in.read(b, off, len);
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||||
}
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||||
|
||||
public synchronized void reset() throws IOException
|
||||
{
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||||
in.reset();
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||||
}
|
||||
|
||||
public long skip(long n) throws IOException
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||||
{
|
||||
return in.skip(n);
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||||
}
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||||
/**
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||||
* Create a <code>FilterInputStream</code> with the specified subordinate
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* <code>InputStream</code>.
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*
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* @param in The subordinate <code>InputStream</code>
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||||
*/
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||||
protected
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FilterInputStream(InputStream in)
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||||
{
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||||
this.in = in;
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||||
}
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||||
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||||
/*************************************************************************/
|
||||
|
||||
/*
|
||||
* Instance Methods
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||||
*/
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||||
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||||
/**
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||||
* Calls the <code>in.mark(int)</code> method.
|
||||
*
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||||
* @param readlimit The parameter passed to <code>in.mark(int)</code>
|
||||
*/
|
||||
public void
|
||||
mark(int readlimit)
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||||
{
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||||
in.mark(readlimit);
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||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* 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
|
||||
|
|
|
|||
|
|
@ -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
|
||||
|
|
|
|||
|
|
@ -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
|
||||
|
|
|
|||
|
|
@ -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
|
||||
|
||||
|
|
|
|||
|
|
@ -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
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue