+// Copyright 2000-2005 the Contributors, as shown in the revision logs.
+// Licensed under the Apache Public Source License 2.0 ("the License").
+// You may not use this file except in compliance with the License.
+
package org.ibex.nestedvm.util;
import java.io.*;
public abstract void seek(int pos) throws IOException;
public abstract void close() throws IOException;
public abstract int pos() throws IOException;
+
+ public void resize(long length) throws IOException {
+ throw new IOException("resize not implemented for " + getClass());
+ }
+ /** If pos == 0 and size == 0 lock covers whole file. */
+ public Lock lock(long pos, long size, boolean shared) throws IOException {
+ throw new IOException("lock not implemented for " + getClass());
+ }
public int read() throws IOException {
byte[] buf = new byte[1];
}
public static class File extends Seekable {
+ private final java.io.File file;
private final RandomAccessFile raf;
public File(String fileName) throws IOException { this(fileName,false); }
public File(String fileName, boolean writable) throws IOException { this(new java.io.File(fileName),writable,false); }
public File(java.io.File file, boolean writable, boolean truncate) throws IOException {
+ this.file = file;
String mode = writable ? "rw" : "r";
raf = truncate ? Platform.truncatedRandomAccessFile(file,mode) : new RandomAccessFile(file,mode);
}
public int pos() throws IOException { return (int) raf.getFilePointer(); }
public int length() throws IOException { return (int)raf.length(); }
public void close() throws IOException { raf.close(); }
+ public void resize(long length) throws IOException { raf.setLength(length); }
+ public boolean equals(Object o) {
+ return o != null && o instanceof File
+ && file.equals(((File)o).file);
+ }
+ public Lock lock(long pos, long size, boolean shared)
+ throws IOException {
+ return Platform.lockFile(this, raf, pos, size, shared);
+ }
}
public static class InputStream extends Seekable {
public void close() throws IOException { is.close(); }
}
+ public interface Lock {
+ public Seekable seekable();
+ public boolean isShared();
+ public boolean isValid();
+ public void release() throws IOException;
+ public long position();
+ public long size();
+ }
}