Mercurial > public > mercurial-scm > hg
diff mercurial/pure/parsers.py @ 47256:2b69555e4875
revlog: introduce a compression mode for sidedata in the revlog index
We will use this for compression for the sidedata payload.
Differential Revision: https://phab.mercurial-scm.org/D10653
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Mon, 03 May 2021 21:34:02 +0200 |
| parents | 6bfa6c2c5f15 |
| children | 07641bafa646 |
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--- a/mercurial/pure/parsers.py Mon May 03 21:13:24 2021 +0200 +++ b/mercurial/pure/parsers.py Mon May 03 21:34:02 2021 +0200 @@ -66,6 +66,7 @@ 0, 0, revlog_constants.COMP_MODE_INLINE, + revlog_constants.COMP_MODE_INLINE, ) @util.propertycache @@ -147,7 +148,12 @@ def _unpack_entry(self, data): r = self.index_format.unpack(data) - r = r + (0, 0, revlog_constants.COMP_MODE_INLINE) + r = r + ( + 0, + 0, + revlog_constants.COMP_MODE_INLINE, + revlog_constants.COMP_MODE_INLINE, + ) return r def pack_header(self, header): @@ -315,10 +321,19 @@ self._extra[rev - self._lgt] = new def _unpack_entry(self, data): - return self.index_format.unpack(data) + data = self.index_format.unpack(data) + entry = data[:10] + data_comp = data[10] & 3 + sidedata_comp = (data[10] & (3 << 2)) >> 2 + return entry + (data_comp, sidedata_comp) def _pack_entry(self, entry): - return self.index_format.pack(*entry[:11]) + data = entry[:10] + data_comp = entry[10] & 3 + sidedata_comp = (entry[11] & 3) << 2 + data += (data_comp | sidedata_comp,) + + return self.index_format.pack(*data) def entry_binary(self, rev): """return the raw binary string representing a revision"""