global: mass rewrite to use modern exception syntax
Python 2.6 introduced the "except type as instance" syntax, replacing
the "except type, instance" syntax that came before. Python 3 dropped
support for the latter syntax. Since we no longer support Python 2.4 or
2.5, we have no need to continue supporting the "except type, instance".
This patch mass rewrites the exception syntax to be Python 2.6+ and
Python 3 compatible.
This patch was produced by running `2to3 -f except -w -n .`.
# verify.py - repository integrity checking for Mercurial
#
# Copyright 2006, 2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from node import nullid, short
from i18n import _
import os
import revlog, util, error
def verify(repo):
lock = repo.lock()
try:
return _verify(repo)
finally:
lock.release()
def _normpath(f):
# under hg < 2.4, convert didn't sanitize paths properly, so a
# converted repo may contain repeated slashes
while '//' in f:
f = f.replace('//', '/')
return f
def _verify(repo):
repo = repo.unfiltered()
mflinkrevs = {}
filelinkrevs = {}
filenodes = {}
revisions = 0
badrevs = set()
errors = [0]
warnings = [0]
ui = repo.ui
cl = repo.changelog
mf = repo.manifest
lrugetctx = util.lrucachefunc(repo.changectx)
if not repo.url().startswith('file:'):
raise util.Abort(_("cannot verify bundle or remote repos"))
def err(linkrev, msg, filename=None):
if linkrev is not None:
badrevs.add(linkrev)
else:
linkrev = '?'
msg = "%s: %s" % (linkrev, msg)
if filename:
msg = "%s@%s" % (filename, msg)
ui.warn(" " + msg + "\n")
errors[0] += 1
def exc(linkrev, msg, inst, filename=None):
if isinstance(inst, KeyboardInterrupt):
ui.warn(_("interrupted"))
raise
if not str(inst):
inst = repr(inst)
err(linkrev, "%s: %s" % (msg, inst), filename)
def warn(msg):
ui.warn(msg + "\n")
warnings[0] += 1
def checklog(obj, name, linkrev):
if not len(obj) and (havecl or havemf):
err(linkrev, _("empty or missing %s") % name)
return
d = obj.checksize()
if d[0]:
err(None, _("data length off by %d bytes") % d[0], name)
if d[1]:
err(None, _("index contains %d extra bytes") % d[1], name)
if obj.version != revlog.REVLOGV0:
if not revlogv1:
warn(_("warning: `%s' uses revlog format 1") % name)
elif revlogv1:
warn(_("warning: `%s' uses revlog format 0") % name)
def checkentry(obj, i, node, seen, linkrevs, f):
lr = obj.linkrev(obj.rev(node))
if lr < 0 or (havecl and lr not in linkrevs):
if lr < 0 or lr >= len(cl):
msg = _("rev %d points to nonexistent changeset %d")
else:
msg = _("rev %d points to unexpected changeset %d")
err(None, msg % (i, lr), f)
if linkrevs:
if f and len(linkrevs) > 1:
try:
# attempt to filter down to real linkrevs
linkrevs = [l for l in linkrevs
if lrugetctx(l)[f].filenode() == node]
except Exception:
pass
warn(_(" (expected %s)") % " ".join(map(str, linkrevs)))
lr = None # can't be trusted
try:
p1, p2 = obj.parents(node)
if p1 not in seen and p1 != nullid:
err(lr, _("unknown parent 1 %s of %s") %
(short(p1), short(node)), f)
if p2 not in seen and p2 != nullid:
err(lr, _("unknown parent 2 %s of %s") %
(short(p2), short(node)), f)
except Exception as inst:
exc(lr, _("checking parents of %s") % short(node), inst, f)
if node in seen:
err(lr, _("duplicate revision %d (%d)") % (i, seen[node]), f)
seen[node] = i
return lr
if os.path.exists(repo.sjoin("journal")):
ui.warn(_("abandoned transaction found - run hg recover\n"))
revlogv1 = cl.version != revlog.REVLOGV0
if ui.verbose or not revlogv1:
ui.status(_("repository uses revlog format %d\n") %
(revlogv1 and 1 or 0))
havecl = len(cl) > 0
havemf = len(mf) > 0
ui.status(_("checking changesets\n"))
refersmf = False
seen = {}
checklog(cl, "changelog", 0)
total = len(repo)
for i in repo:
ui.progress(_('checking'), i, total=total, unit=_('changesets'))
n = cl.node(i)
checkentry(cl, i, n, seen, [i], "changelog")
try:
changes = cl.read(n)
if changes[0] != nullid:
mflinkrevs.setdefault(changes[0], []).append(i)
refersmf = True
for f in changes[3]:
filelinkrevs.setdefault(_normpath(f), []).append(i)
except Exception as inst:
refersmf = True
exc(i, _("unpacking changeset %s") % short(n), inst)
ui.progress(_('checking'), None)
ui.status(_("checking manifests\n"))
seen = {}
if refersmf:
# Do not check manifest if there are only changelog entries with
# null manifests.
checklog(mf, "manifest", 0)
total = len(mf)
for i in mf:
ui.progress(_('checking'), i, total=total, unit=_('manifests'))
n = mf.node(i)
lr = checkentry(mf, i, n, seen, mflinkrevs.get(n, []), "manifest")
if n in mflinkrevs:
del mflinkrevs[n]
else:
err(lr, _("%s not in changesets") % short(n), "manifest")
try:
for f, fn in mf.readdelta(n).iteritems():
if not f:
err(lr, _("file without name in manifest"))
elif f != "/dev/null": # ignore this in very old repos
filenodes.setdefault(_normpath(f), {}).setdefault(fn, lr)
except Exception as inst:
exc(lr, _("reading manifest delta %s") % short(n), inst)
ui.progress(_('checking'), None)
ui.status(_("crosschecking files in changesets and manifests\n"))
total = len(mflinkrevs) + len(filelinkrevs) + len(filenodes)
count = 0
if havemf:
for c, m in sorted([(c, m) for m in mflinkrevs
for c in mflinkrevs[m]]):
count += 1
if m == nullid:
continue
ui.progress(_('crosschecking'), count, total=total)
err(c, _("changeset refers to unknown manifest %s") % short(m))
mflinkrevs = None # del is bad here due to scope issues
for f in sorted(filelinkrevs):
count += 1
ui.progress(_('crosschecking'), count, total=total)
if f not in filenodes:
lr = filelinkrevs[f][0]
err(lr, _("in changeset but not in manifest"), f)
if havecl:
for f in sorted(filenodes):
count += 1
ui.progress(_('crosschecking'), count, total=total)
if f not in filelinkrevs:
try:
fl = repo.file(f)
lr = min([fl.linkrev(fl.rev(n)) for n in filenodes[f]])
except Exception:
lr = None
err(lr, _("in manifest but not in changeset"), f)
ui.progress(_('crosschecking'), None)
ui.status(_("checking files\n"))
storefiles = set()
for f, f2, size in repo.store.datafiles():
if not f:
err(None, _("cannot decode filename '%s'") % f2)
elif size > 0 or not revlogv1:
storefiles.add(_normpath(f))
fncachewarned = False
files = sorted(set(filenodes) | set(filelinkrevs))
total = len(files)
for i, f in enumerate(files):
ui.progress(_('checking'), i, item=f, total=total)
try:
linkrevs = filelinkrevs[f]
except KeyError:
# in manifest but not in changelog
linkrevs = []
if linkrevs:
lr = linkrevs[0]
else:
lr = None
try:
fl = repo.file(f)
except error.RevlogError as e:
err(lr, _("broken revlog! (%s)") % e, f)
continue
for ff in fl.files():
try:
storefiles.remove(ff)
except KeyError:
warn(_(" warning: revlog '%s' not in fncache!") % ff)
fncachewarned = True
checklog(fl, f, lr)
seen = {}
rp = None
for i in fl:
revisions += 1
n = fl.node(i)
lr = checkentry(fl, i, n, seen, linkrevs, f)
if f in filenodes:
if havemf and n not in filenodes[f]:
err(lr, _("%s not in manifests") % (short(n)), f)
else:
del filenodes[f][n]
# verify contents
try:
l = len(fl.read(n))
rp = fl.renamed(n)
if l != fl.size(i):
if len(fl.revision(n)) != fl.size(i):
err(lr, _("unpacked size is %s, %s expected") %
(l, fl.size(i)), f)
except error.CensoredNodeError:
if ui.config("censor", "policy", "abort") == "abort":
err(lr, _("censored file data"), f)
except Exception as inst:
exc(lr, _("unpacking %s") % short(n), inst, f)
# check renames
try:
if rp:
if lr is not None and ui.verbose:
ctx = lrugetctx(lr)
found = False
for pctx in ctx.parents():
if rp[0] in pctx:
found = True
break
if not found:
warn(_("warning: copy source of '%s' not"
" in parents of %s") % (f, ctx))
fl2 = repo.file(rp[0])
if not len(fl2):
err(lr, _("empty or missing copy source revlog %s:%s")
% (rp[0], short(rp[1])), f)
elif rp[1] == nullid:
ui.note(_("warning: %s@%s: copy source"
" revision is nullid %s:%s\n")
% (f, lr, rp[0], short(rp[1])))
else:
fl2.rev(rp[1])
except Exception as inst:
exc(lr, _("checking rename of %s") % short(n), inst, f)
# cross-check
if f in filenodes:
fns = [(lr, n) for n, lr in filenodes[f].iteritems()]
for lr, node in sorted(fns):
err(lr, _("%s in manifests not found") % short(node), f)
ui.progress(_('checking'), None)
for f in storefiles:
warn(_("warning: orphan revlog '%s'") % f)
ui.status(_("%d files, %d changesets, %d total revisions\n") %
(len(files), len(cl), revisions))
if warnings[0]:
ui.warn(_("%d warnings encountered!\n") % warnings[0])
if fncachewarned:
ui.warn(_('hint: run "hg debugrebuildfncache" to recover from '
'corrupt fncache\n'))
if errors[0]:
ui.warn(_("%d integrity errors encountered!\n") % errors[0])
if badrevs:
ui.warn(_("(first damaged changeset appears to be %d)\n")
% min(badrevs))
return 1