/**
* @param file The file to open
* @param mode Either "rw" or "r", depending on whether this file is read only
* @param bufferSize The size of the buffer used to manually buffer I/O If -1 the default buffer
* size is used, which depends on how {@link DirectIoLib} is implemented.
* @throws IOException
*/
public DirectRandomAccessFile(File file, String mode, int bufferSize) throws IOException {
boolean readOnly = false;
if (mode.equals("r")) {
readOnly = true;
} else if (!mode.equals("rw")) {
throw new IllegalArgumentException("only r and rw modes supported");
}
if (readOnly && !file.isFile()) {
throw new FileNotFoundException("couldn't find file " + file);
}
this.channel =
bufferSize != -1
? DirectIoByteChannelAligner.open(file, bufferSize, readOnly)
: DirectIoByteChannelAligner.open(file, readOnly);
}
