Mercurial > public > mercurial-scm > hg
comparison mercurial/revlog.py @ 51008:9461a0b74596
revlog: make `reading` not crash on empty repository
If the revlog is empty, the file might not exist and the open will fails. This
is not great, but that details or this is now contained in the revlog itself.
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Mon, 25 Sep 2023 12:07:25 +0200 |
| parents | ccddd2f54013 |
| children | aed91a4421b8 |
comparison
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| 51007:c690d2cc7f36 | 51008:9461a0b74596 |
|---|---|
| 2280 """called when trying to add a node already stored.""" | 2280 """called when trying to add a node already stored.""" |
| 2281 | 2281 |
| 2282 @contextlib.contextmanager | 2282 @contextlib.contextmanager |
| 2283 def reading(self): | 2283 def reading(self): |
| 2284 """Context manager that keeps data and sidedata files open for reading""" | 2284 """Context manager that keeps data and sidedata files open for reading""" |
| 2285 with self._segmentfile.reading(): | 2285 if len(self.index) == 0: |
| 2286 with self._segmentfile_sidedata.reading(): | 2286 yield # nothing to be read |
| 2287 yield | 2287 else: |
| 2288 with self._segmentfile.reading(): | |
| 2289 with self._segmentfile_sidedata.reading(): | |
| 2290 yield | |
| 2288 | 2291 |
| 2289 @contextlib.contextmanager | 2292 @contextlib.contextmanager |
| 2290 def _writing(self, transaction): | 2293 def _writing(self, transaction): |
| 2291 if self._trypending: | 2294 if self._trypending: |
| 2292 msg = b'try to write in a `trypending` revlog: %s' | 2295 msg = b'try to write in a `trypending` revlog: %s' |