def _stream(self):
"""
Returns a generator of lines instead of a list of lines.
"""
if self._exception:
raise self._exception
try:
if self._content:
yield self._content
raise StopIteration
filters = get_filters(self.ds) if self.ds else None
if filters:
cmd = ["grep", "-F", "\n".join(filters), self.path]
with streams.stream(cmd, env=SAFE_ENV) as s:
yield s
else:
with open(self.path, "rU") as f: # universal newlines
yield f
except StopIteration:
raise
except Exception as ex:
self._exception = ex
raise ContentException(str(ex))
def stream(self, *args, **kwargs):
with streams.stream(*args, **kwargs) as s:
yield s