/**
* @param max max number of entries to read
* @return all reflog entries in reverse order
* @throws IOException
*/
public List<ReflogEntry> getReverseEntries(int max) throws IOException {
final byte[] log;
try {
log = IO.readFully(logName);
} catch (FileNotFoundException e) {
return Collections.emptyList();
}
int rs = RawParseUtils.prevLF(log, log.length);
List<ReflogEntry> ret = new ArrayList<ReflogEntry>();
while (rs >= 0 && max-- > 0) {
rs = RawParseUtils.prevLF(log, rs);
ReflogEntry entry = new ReflogEntry(log, rs < 0 ? 0 : rs + 2);
ret.add(entry);
}
return ret;
}
/**
* Get specific entry in the reflog relative to the last entry which is considered entry zero.
*
* @param number
* @return reflog entry or null if not found
* @throws IOException
*/
public ReflogEntry getReverseEntry(int number) throws IOException {
if (number < 0) throw new IllegalArgumentException();
final byte[] log;
try {
log = IO.readFully(logName);
} catch (FileNotFoundException e) {
return null;
}
int rs = RawParseUtils.prevLF(log, log.length);
int current = 0;
while (rs >= 0) {
rs = RawParseUtils.prevLF(log, rs);
if (number == current) return new ReflogEntry(log, rs < 0 ? 0 : rs + 2);
current++;
}
return null;
}