revlog: add a fast path for "ambiguous identifier"
Before fd1bb7c, if the C index.partialmatch raises RevlogError, the Python
code raises "ambiguous identifier" error immediately, which is efficient.
fd1bb7c took hidden revisions into consideration and forced the slow path
enumerating the changelog to double-check hidden revisions. But it's not
necessary if we know the revlog has no hidden revisions.
This patch adds back the fast path for unfiltered revlogs.
#!/usr/bin/env python
# Dump revlogs as raw data stream
# $ find .hg/store/ -name "*.i" | xargs dumprevlog > repo.dump
from __future__ import absolute_import, print_function
import sys
from mercurial import (
node,
revlog,
util,
)
for fp in (sys.stdin, sys.stdout, sys.stderr):
util.setbinary(fp)
for f in sys.argv[1:]:
binopen = lambda fn: open(fn, 'rb')
r = revlog.revlog(binopen, f)
print("file:", f)
for i in r:
n = r.node(i)
p = r.parents(n)
d = r.revision(n)
print("node:", node.hex(n))
print("linkrev:", r.linkrev(i))
print("parents:", node.hex(p[0]), node.hex(p[1]))
print("length:", len(d))
print("-start-")
print(d)
print("-end-")