Mercurial > hg-stable
changeset 12000:3361075816f8
revlog: addgroup re-adds punched revisions for missing parents
While reading changegroup if a node with missing parents is encountered,
we add a punched entry in the index with null parents for the missing
parent node.
| author | Vishakh H <vsh426@gmail.com> |
|---|---|
| date | Fri, 13 Aug 2010 19:42:28 +0530 |
| parents | 62e2bbf523f2 |
| children | 4b1197f15313 |
| files | mercurial/revlog.py |
| diffstat | 1 files changed, 20 insertions(+), 3 deletions(-) [+] |
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--- a/mercurial/revlog.py Fri Aug 13 19:41:51 2010 +0530 +++ b/mercurial/revlog.py Fri Aug 13 19:42:28 2010 +0530 @@ -1154,7 +1154,8 @@ def _addrevision(self, text, transaction, link, p1, p2, cachedelta, ifh, dfh): node = hash(text, p1, p2) - if node in self.nodemap: + if (node in self.nodemap and + (not self.flags(self.rev(node)) & REVIDX_PUNCHED_FLAG)): return node curr = len(self) @@ -1305,7 +1306,8 @@ for chunk in revs: node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) link = linkmapper(cs) - if node in self.nodemap: + if (node in self.nodemap and + (not self.flags(self.rev(node)) & REVIDX_PUNCHED_FLAG)): # this can happen if two branches make the same change chain = node continue @@ -1314,7 +1316,21 @@ for p in (p1, p2): if not p in self.nodemap: - raise LookupError(p, self.indexfile, _('unknown parent')) + if self._shallow: + # add null entries for missing parents + if base == nullrev: + base = len(self) + e = (offset_type(end, REVIDX_PUNCHED_FLAG), + 0, 0, base, nullrev, nullrev, nullrev, p) + self.index.insert(-1, e) + self.nodemap[p] = r + entry = self._io.packentry(e, self.node, + self.version, r) + ifh.write(entry) + t, r = r, r + 1 + else: + raise LookupError(p, self.indexfile, + _('unknown parent')) if not chain: # retrieve the parent revision of the delta chain @@ -1341,6 +1357,7 @@ text = self.revision(chain) if len(text) == 0: # skip over trivial delta header + # text == '' in the case of nullrev or punched revision text = buffer(delta, 12) else: text = mdiff.patches(text, [delta])