def _find_right(self, opened_file):
left = 0
right = ReadUtils.size_of_opened_file(opened_file)
while left + 1 < right:
curr = (left + right) // 2
line, line_begin, line_end = ReadUtils.get_line_containing_offset(
opened_file, curr, ReadUtils.STANDARD_BUFFER_SIZE
)
groups = self._super_parser.get_ordered_groups(line)
assert len(groups) <= 1
if self._investigation_step.compare_with_bound(InvestigationStep.RIGHT_BOUND, groups)\
in [CompareResult.LT, CompareResult.EQ]:
# go to the end of current line, maybe it will be returned
left = line_end
else:
# going left, current line is not interesting
right = line_begin - 1
if right == 0:
return 0
_, _, end_offset = ReadUtils.get_line_containing_offset(
opened_file, right - 1, ReadUtils.STANDARD_BUFFER_SIZE
)
return end_offset + 1
def _find_left(self, opened_file):
left = 0
right = ReadUtils.size_of_opened_file(opened_file)
while left + 1 < right:
curr = (left + right) // 2
line, line_begin, line_end = ReadUtils.get_line_containing_offset(
opened_file, curr, ReadUtils.STANDARD_BUFFER_SIZE
)
groups = self._super_parser.get_ordered_groups(line)
assert len(groups) <= 1
if self._investigation_step.compare_with_bound(
InvestigationStep.LEFT_BOUND, groups
) == CompareResult.LT:
# omit actual line and go right
left = line_end + 1
else:
# going left, omit actual line, but maybe it will be returned
right = line_begin
return right
def test_getting_line_by_offset_huge(self):
with open(TestPaths.get_file_path(AFewLinesLogParams.FILE_NAME)) as fh:
for j in six.moves.range(1, 120, 7):
for i in six.moves.range(100):
assert ReadUtils.get_line_containing_offset(fh, i, j) == \
AFewLinesLogParams.get_line_with_borders(i)
def test_getting_line_by_offset_huge(self):
with open(TestPaths.get_file_path(AFewLinesLogParams.FILE_NAME)) as fh:
for j in six.moves.range(1, 120, 7):
for i in six.moves.range(100):
assert ReadUtils.get_line_containing_offset(fh, i, j) == \
AFewLinesLogParams.get_line_with_borders(i)
