Mercurial > hg
diff mercurial/revlogutils/constants.py @ 46858:85e3a630cad9
revlog: move the details of revlog "v2" index inside revlog.utils.constants
the revlog module is quite large and this kind of format information would handy
for other module. So let us start to gather this information about the format in
a more appropriate place.
We update various reference to this information to use the new "source of truth"
in the process.
Differential Revision: https://phab.mercurial-scm.org/D10305
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Mon, 05 Apr 2021 12:21:12 +0200 |
parents | cc65cea90edb |
children | c6e23fb4bfb4 |
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--- a/mercurial/revlogutils/constants.py Mon Apr 05 12:21:01 2021 +0200 +++ b/mercurial/revlogutils/constants.py Mon Apr 05 12:21:12 2021 +0200 @@ -57,6 +57,21 @@ INDEX_ENTRY_V1 = struct.Struct(b">Qiiiiii20s12x") assert INDEX_ENTRY_V1.size == 32 * 2 +# 6 bytes: offset +# 2 bytes: flags +# 4 bytes: compressed length +# 4 bytes: uncompressed length +# 4 bytes: base rev +# 4 bytes: link rev +# 4 bytes: parent 1 rev +# 4 bytes: parent 2 rev +# 32 bytes: nodeid +# 8 bytes: sidedata offset +# 4 bytes: sidedata compressed length +# 20 bytes: Padding to align to 96 bytes (see RevlogV2Plan wiki page) +INDEX_ENTRY_V2 = struct.Struct(b">Qiiiiii20s12xQi20x") +assert INDEX_ENTRY_V2.size == 32 * 3 + # revlog index flags # For historical reasons, revlog's internal flags were exposed via the