apps/diskprobe/DataEditor.cpp

54 		virtual bool Merge(DataChange *change);
65 		virtual bool Merge(DataChange *change);
184 DataChange::Merge(DataChange *change)
244 	// don't change anything outside the supplied buffer
273 	// don't change anything outside the supplied buffer
295 	ReplaceChange *change = dynamic_cast<ReplaceChange *>(_change);
296 	if (change == NULL)
299 	if (change->fOffset + change->fSize == fOffset + fSize
300 		&& change->fSize == 1) {
301 		// this is a special case - the new change changed the last byte of
302 		// the old change: we do this since the same byte is changed twice
304 		fNewData[fSize - 1] = change->fNewData[0];
316 	if (change->fOffset + (off_t)change->fSize != fOffset
317 		&& fOffset + (off_t)fSize != change->fOffset)
322 	uint8 *newData = fOffset < change->fOffset ? fNewData : change->fNewData;
323 	size_t size = fSize + change->fSize;
328 	uint8 *oldData = fOffset < change->fOffset ? fOldData : change->fOldData;
335 	if (fOffset < change->fOffset) {
336 		memcpy(newData + fSize, change->fNewData, change->fSize);
337 		memcpy(oldData + fSize, change->fOldData, change->fSize);
339 		memcpy(newData + change->fSize, fNewData, fSize);
340 		memcpy(oldData + change->fSize, fOldData, fSize);
341 		change->fNewData = fNewData;
342 		change->fOldData = fOldData;
343 			// transfer ownership, so that they will be deleted with the change
344 		fOffset = change->fOffset;
546 DataEditor::AddChange(DataChange *change)
548 	if (change == NULL)
555 	change->Apply(fRealViewOffset, fView, fRealViewSize);
557 	SendNotices(change);
561 	if (fLastChange == NULL || !fLastChange->Merge(change)) {
562 		fChanges.AddItem(change);
563 		fLastChange = change;
566 		delete change;
589 	ReplaceChange *change = new ReplaceChange(offset, data, length);
590 	AddChange(change);
605 	// ToDo: this needs some changes to the whole change mechanism
620 	// ToDo: this needs some changes to the whole change mechanism
642 			DataChange *change = fChanges.ItemAt(i);
643 			change->Apply(fRealViewOffset, fView, fRealViewSize);
651 			DataChange *change = fChanges.ItemAt(i);
652 			change->Revert(fRealViewOffset, fView, fRealViewSize);
696 		DataChange *change = fChanges.ItemAt(i);
699 		change->GetRange(FileSize(), offset, size);
727 		// don't try to change the file size
757  *	immediately before a change is applied.
759  *	come after the current change.
768 		DataChange *change = fChanges.RemoveItemAt(i);
769 		delete change;
1209 DataEditor::SendNotices(DataChange *change)
1212 	change->GetRange(FileSize(), offset, size);