/**
* Writes the tail portion of the file to the {@link OutputStream}.
*
* @param start The byte offset in the input file where the write operation starts.
* @return if the file is still being written, this method writes the file until the last newline
* character and returns the offset to start the next write operation.
*/
public long writeLogTo(long start, OutputStream out) throws IOException {
CountingOutputStream os = new CountingOutputStream(out);
Session f = source.open();
f.skip(start);
if (completed) {
// write everything till EOF
byte[] buf = new byte[1024];
int sz;
while ((sz = f.read(buf)) >= 0) os.write(buf, 0, sz);
} else {
ByteBuf buf = new ByteBuf(null, f);
HeadMark head = new HeadMark(buf);
TailMark tail = new TailMark(buf);
buf = null;
int readLines = 0;
while (tail.moveToNextLine(f) && readLines++ < MAX_LINES_READ) {
head.moveTo(tail, os);
}
head.finish(os);
}
f.close();
os.flush();
return os.getCount() + start;
}
/**
* Writes the section of the file {@link OutputStream}.
*
* @param start The byte offset in the input file where the write operation starts.
* @return if the file is still being written, this method writes the file until the last newline
* character and returns the offset to start the next write operation.
*/
public long writeLogTo(long start, int size, OutputStream out) throws IOException {
if (size <= 0) {
return 0;
}
CountingOutputStream os = new CountingOutputStream(out);
Session f = source.open();
f.skip(start);
long end = start + size;
byte[] buf = new byte[size];
int sz;
if ((sz = f.read(buf)) >= 0) {
os.write(buf, 0, sz);
}
/*
if(completed) {
} else {
ByteBuf buf = new ByteBuf(null,f, size);
HeadMark head = new HeadMark(buf);
TailMark tail = new TailMark(buf);
int readLines = 0;
while(tail.moveToNextLine(f) && readLines++ < MAX_LINES_READ) {
head.moveTo(tail, os);
if (buf.isFull() || os.getCount() >= end) {
break;
}
}
head.finish(os);
}
*/
f.close();
os.flush();
return os.getCount() + start;
}