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authorTom Tromey <tromey@redhat.com>2006-05-13 02:16:22 +0000
committerTom Tromey <tromey@gcc.gnu.org>2006-05-13 02:16:22 +0000
commit143145daa42382453636fb24b705c673ee812e37 (patch)
tree86bc2116f67a8c7a59e8cb0a7732f0fb34197168 /libjava/java/io/FileInputStream.java
parenta2038cd64d107fbd9d52d1b3cd57a3933f9b9762 (diff)
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sources.am, [...]: Rebuilt.
* sources.am, Makefile.in: Rebuilt. * java/util/logging/LogManager.java: Removed. * java/util/logging/Logger.java (resetLogger): New method, from Classpath. * java/io/RandomAccessFile.java: Removed. * gnu/java/nio/channels/FileChannelImpl.java (create): New method. (FileChannelImpl): Now private. * java/io/FileInputStream.java: Removed. * java/io/FileOutputStream.java: Removed. * java/security/AccessControlContext.java: Removed. * java/lang/ThreadLocal.java: Removed. * java/lang/InheritableThreadLocal.java: Removed. * java/lang/Thread.java (locals): New field. (getThreadLocals): New method. * java/lang/natThread.cc (finish_): Clear 'locals'. From-SVN: r113735
Diffstat (limited to 'libjava/java/io/FileInputStream.java')
-rw-r--r--libjava/java/io/FileInputStream.java309
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diff --git a/libjava/java/io/FileInputStream.java b/libjava/java/io/FileInputStream.java
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--- a/libjava/java/io/FileInputStream.java
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@@ -1,309 +0,0 @@
-/* FileInputStream.java -- An input stream that reads from disk files.
- Copyright (C) 1998, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
-
-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., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package java.io;
-
-import gnu.java.nio.channels.FileChannelImpl;
-
-import java.nio.channels.FileChannel;
-
-/* 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 class is a stream that reads its bytes from a file.
- *
- * @author Aaron M. Renn (arenn@urbanophile.com)
- * @author Warren Levy (warrenl@cygnus.com)
- */
-public class FileInputStream extends InputStream
-{
- /**
- * This is the native file handle for the file this stream is reading from
- */
- private FileDescriptor fd;
-
- private FileChannelImpl ch;
-
- /**
- * This method initializes a <code>FileInputStream</code> to read from the
- * specified named file. A security check is first made to determine
- * whether or not access to this file is allowed. This is done by
- * calling the <code>checkRead()</code> method of the
- * <code>SecurityManager</code>
- * (if one exists) with the name of this file. An exception is thrown
- * if reading is not allowed. If the file does not exist, an exception
- * is also thrown.
- *
- * @param name The name of the file this stream should read from
- *
- * @exception SecurityException If read access to the file is not allowed
- * @exception FileNotFoundException If the file does not exist
- * or if it is a directory
- */
- public FileInputStream(String name) throws FileNotFoundException
- {
- this(new File(name));
- }
-
- /**
- * This method initializes a <code>FileInputStream</code> to read from the
- * specified <code>File</code> object. A security check is first
- * made to determine
- * whether or not access to this file is allowed. This is done by
- * calling the <code>checkRead()</code> method of the
- * <code>SecurityManager</code>
- * (if one exists) with the name of this file. An exception is thrown
- * if reading is not allowed. If the file does not exist, an exception
- * is also thrown.
- *
- * @param file The <code>File</code> object this stream should read from
- *
- * @exception SecurityException If read access to the file is not allowed
- * @exception FileNotFoundException If the file does not exist
- * or if it is a directory.
- */
- public FileInputStream(File file) throws FileNotFoundException
- {
- SecurityManager s = System.getSecurityManager();
- if (s != null)
- s.checkRead(file.getPath());
-
- ch = new FileChannelImpl (file, FileChannelImpl.READ);
- }
-
- /**
- * This method initializes a <code>FileInputStream</code> to read from the
- * specified <code>FileDescriptor</code> object. A security
- * check is first made to
- * determine whether or not access to this file is allowed. This is done by
- * calling the <code>checkRead()</code> method of the
- * <code>SecurityManager</code>
- * (if one exists) with the specified <code>FileDescriptor</code>
- * An exception is
- * thrown if reading is not allowed.
- *
- * @param fdObj The <code>FileDescriptor</code> object this stream
- * should read from
- *
- * @exception SecurityException If read access to the file is not allowed
- */
- public FileInputStream(FileDescriptor fdObj)
- {
- SecurityManager s = System.getSecurityManager();
- if (s != null)
- s.checkRead(fdObj);
-
- fd = fdObj;
- ch = (FileChannelImpl) fdObj.channel;
- }
-
- FileInputStream(FileChannelImpl ch)
- {
- this.ch = ch;
- }
-
- /**
- * This method returns the number of bytes that can be read from this
- * stream before a read can block. A return of 0 indicates that blocking
- * might (or might not) occur on the very next read attempt.
- * <p>
- * This method returns the number of unread bytes remaining in the file if
- * the descriptor being read from is an actual file. If this method is
- * reading from a ''special'' file such a the standard input, this method
- * will return the appropriate value for the stream being read.
- * <p>
- * Be aware that reads on plain files that do not reside locally might
- * possibly block even if this method says they should not. For example,
- * a remote server might crash, preventing an NFS mounted file from being
- * read.
- *
- * @return The number of bytes that can be read before blocking could occur
- *
- * @exception IOException If an error occurs
- */
- public int available() throws IOException
- {
- return ch.available();
- }
-
- /**
- * This method closes the stream. Any futher attempts to read from the
- * stream will likely generate an IOException since the underlying file
- * will be closed.
- *
- * @exception IOException If an error occurs.
- */
- public void close() throws IOException
- {
- ch.close();
- }
-
- protected void finalize() throws IOException
- {
- // We don't actually need this, but we include it because it is
- // mentioned in the JCL.
- }
-
- /**
- * This method returns a <code>FileDescriptor</code> object representing the
- * underlying native file handle of the file this stream is reading
- * from
- *
- * @return A <code>FileDescriptor</code> for this stream
- *
- * @exception IOException If an error occurs
- */
- public final FileDescriptor getFD() throws IOException
- {
- synchronized (this)
- {
- if (fd == null)
- fd = new FileDescriptor (ch);
- return fd;
- }
- }
-
- /**
- * This method reads an unsigned byte from the input stream and returns it
- * as an int in the range of 0-255. This method also will return -1 if
- * the end of the stream has been reached.
- * <p>
- * This method will block until the byte can be read.
- *
- * @return The byte read or -1 if end of stream
- *
- * @exception IOException If an error occurs
- */
- public int read() throws IOException
- {
- return ch.read();
- }
-
- /**
- * This method reads bytes from a stream and stores them into a caller
- * supplied buffer. This method attempts to completely fill the buffer,
- * but can return before doing so. The actual number of bytes read is
- * returned as an int. A -1 is returned to indicate the end of the stream.
- * <p>
- * This method will block until some data can be read.
- * <p>
- * This method operates by calling an overloaded read method like so:
- * <code>read(buf, 0, buf.length)</code>
- *
- * @param buf The buffer into which the bytes read will be stored.
- *
- * @return The number of bytes read or -1 if end of stream.
- *
- * @exception IOException If an error occurs.
- */
- public int read(byte[] buf) throws IOException
- {
- return read(buf, 0, buf.length);
- }
-
- /**
- * This method read bytes from a stream and stores them into a caller
- * supplied buffer. It starts storing the data at index
- * <code>offset</code> into
- * the buffer and attempts to read <code>len</code> bytes. This method can
- * return before reading the number of bytes requested. The actual number
- * of bytes read is returned as an int. A -1 is returned to indicate the
- * end of the stream.
- * <p>
- * This method will block until some data can be read.
- *
- * @param buf The array into which the bytes read should be stored
- * @param offset The offset into the array to start storing bytes
- * @param len The requested number of bytes to read
- *
- * @return The actual number of bytes read, or -1 if end of stream.
- *
- * @exception IOException If an error occurs.
- */
- public int read(byte[] buf, int offset, int len) throws IOException
- {
- if (offset < 0
- || len < 0
- || offset + len > buf.length)
- throw new ArrayIndexOutOfBoundsException();
-
- return ch.read(buf, offset, len);
- }
-
- /**
- * This method skips the specified number of bytes in the stream. It
- * returns the actual number of bytes skipped, which may be less than the
- * requested amount.
- * <p>
- * @param numBytes The requested number of bytes to skip
- *
- * @return The actual number of bytes skipped.
- *
- * @exception IOException If an error occurs
- */
- public synchronized long skip (long numBytes) throws IOException
- {
- if (numBytes < 0)
- throw new IllegalArgumentException ("Can't skip negative bytes: " +
- numBytes);
-
- if (numBytes == 0)
- return 0;
-
- long oldPos = ch.position ();
- ch.position(oldPos + numBytes);
- return ch.position() - oldPos;
- }
-
- /**
- * This method creates a java.nio.channels.FileChannel.
- * Nio does not allow one to create a file channel directly.
- * A file channel must be created by first creating an instance of
- * Input/Output/RandomAccessFile and invoking the getChannel() method on it.
- */
- public synchronized FileChannel getChannel ()
- {
- return ch;
- }
-
-} // class FileInputStream
-