htsjdk.samtools.apps.TimeRandomAccessFile Maven / Gradle / Ivy
/*
* The MIT License
*
* Copyright (c) 2010 The Broad Institute
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
*/
package htsjdk.samtools.apps;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
/**
* @author [email protected]
*/
public class TimeRandomAccessFile {
public static void main(String[] args) throws Exception {
RandomAccessFile raf = new RandomAccessFile(new File(args[0]), "r");
byte[] buf = new byte[64 * 1024];
long totalBytesRead = 0;
int bytesRead;
while ((bytesRead = readBytes(raf, buf, 0, buf.length)) > 0) {
totalBytesRead += bytesRead;
}
System.out.println("Total bytes: " + totalBytesRead);
}
private static int readBytes(final RandomAccessFile file, final byte[] buffer, final int offset, final int length)
throws IOException {
int bytesRead = 0;
while (bytesRead < length) {
final int count = file.read(buffer, offset + bytesRead, length - bytesRead);
if (count <= 0) {
break;
}
bytesRead += count;
}
return bytesRead;
}
}