add dirstate debugging commands
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add dirstate debugging commands
As I've played with various different merges and more recently
rawcommit, I've found the following patch to be very very helpful in
figuring out whether the dirstate is being left in a consistent or
inconsistent state with respect to the current manifest.
I attempted to deduce the invariants that were assumed by the current
code, and then check it in this code.
I may or may not have captured the design intent in this check; if not,
I'd be very happy to hear more clearly what was intended, so that I can
write tests to that expectation.
Anyway, here's the patch. Not sure if it's a good idea to commit it to
the mainline, or just leave it as a debugging aid. I attempted to
package it so that it doesn't interfere with normal usage.
Michael Fetterman
(tweaked by mpm: remove -d magic)
manifest hash: 869f5b5f954dc0f46ba27322359e811d5e21d71c
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#!/usr/bin/env python
#
# Minimal support for git commands on an hg repository
#
# Copyright 2005 Chris Mason <mason@suse.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import time, sys, signal
from mercurial import hg, mdiff, fancyopts, commands, ui
def difftree(args, ui, repo):
def __difftree(repo, files = None, node1 = None, node2 = None):
def date(c):
return time.asctime(time.gmtime(float(c[2].split(' ')[0])))
if node2:
change = repo.changelog.read(node2)
mmap2 = repo.manifest.read(change[0])
(c, a, d) = repo.diffrevs(node1, node2)
def read(f): return repo.file(f).read(mmap2[f])
date2 = date(change)
else:
date2 = time.asctime()
(c, a, d, u) = repo.diffdir(repo.root, node1)
if not node1:
node1 = repo.dirstate.parents()[0]
def read(f): return file(os.path.join(repo.root, f)).read()
change = repo.changelog.read(node1)
mmap = repo.manifest.read(change[0])
date1 = date(change)
empty = "0" * 40;
if files:
c, a, d = map(lambda x: filterfiles(files, x), (c, a, d))
for f in c:
# TODO get file permissions
print ":100664 100664 %s %s M\t%s\t%s" % (hg.hex(mmap[f]),
hg.hex(mmap2[f]), f, f)
for f in a:
print ":000000 100664 %s %s N\t%s\t%s" % (empty, hg.hex(mmap2[f]), f, f)
for f in d:
print ":100664 000000 %s %s D\t%s\t%s" % (hg.hex(mmap[f]), empty, f, f)
##
revs = []
if args:
doptions = {}
opts = [('p', 'patch', None, 'patch'),
('r', 'recursive', None, 'recursive')]
args = fancyopts.fancyopts(args, opts, doptions,
'hg diff-tree [options] sha1 sha1')
if len(args) < 2:
help()
sys.exit(1)
revs.append(repo.lookup(args[0]))
revs.append(repo.lookup(args[1]))
args = args[2:]
if doptions['patch']:
commands.dodiff(ui, repo, "", args, *revs)
else:
__difftree(repo, args, *revs)
def catcommit(repo, n, prefix):
nlprefix = '\n' + prefix;
changes = repo.changelog.read(n)
(p1, p2) = repo.changelog.parents(n)
(h, h1, h2) = map(hg.hex, (n, p1, p2))
(i1, i2) = map(repo.changelog.rev, (p1, p2))
print "tree %s" % (h)
if i1 != -1: print "%sparent %s" % (prefix, h1)
if i2 != -1: print "%sparent %s" % (prefix, h2)
date_ar = changes[2].split(' ')
date = int(float(date_ar[0]))
print "%sauthor <%s> %s %s" % (prefix, changes[1], date, date_ar[1])
print "%scommitter <%s> %s %s" % (prefix, changes[1], date, date_ar[1])
print prefix
if prefix != "":
print "%s%s" % (prefix, changes[4].replace('\n', nlprefix).strip())
else:
print changes[4]
def catfile(args, ui, repo):
doptions = {}
opts = [('s', 'stdin', None, 'stdin')]
args = fancyopts.fancyopts(args, opts, doptions,
'hg cat-file type sha1')
# in stdin mode, every line except the commit is prefixed with two
# spaces. This way the our caller can find the commit without magic
# strings
#
prefix = ""
if doptions['stdin']:
try:
(type, r) = raw_input().split(' ');
prefix = " "
except EOFError:
return
else:
if len(args) < 2:
help()
sys.exit(1)
type = args[0]
r = args[1]
while r:
if type != "commit":
sys.stderr.write("aborting hg cat-file only understands commits\n")
sys.exit(1);
n = repo.changelog.lookup(r)
catcommit(repo, n, prefix)
if doptions['stdin']:
try:
(type, r) = raw_input().split(' ');
except EOFError:
break
else:
break
# git rev-tree is a confusing thing. You can supply a number of
# commit sha1s on the command line, and it walks the commit history
# telling you which commits are reachable from the supplied ones via
# a bitmask based on arg position.
# you can specify a commit to stop at by starting the sha1 with ^
def revtree(args, repo, full="tree", maxnr=0):
# calculate and return the reachability bitmask for sha
def is_reachable(ar, reachable, sha):
if len(ar) == 0:
return 1
mask = 0
for i in range(len(ar)):
if sha in reachable[i]:
mask |= 1 << i
return mask
reachable = []
stop_sha1 = []
want_sha1 = []
count = 0
# figure out which commits they are asking for and which ones they
# want us to stop on
for i in range(len(args)):
if args[i].count('^'):
s = args[i].split('^')[1]
stop_sha1.append(repo.changelog.lookup(s))
want_sha1.append(s)
elif args[i] != 'HEAD':
want_sha1.append(args[i])
# calculate the graph for the supplied commits
for i in range(len(want_sha1)):
reachable.append({});
n = repo.changelog.lookup(want_sha1[i]);
visit = [n];
reachable[i][n] = 1
while visit:
n = visit.pop(0)
if n in stop_sha1:
break
for p in repo.changelog.parents(n):
if p not in reachable[i]:
reachable[i][p] = 1
visit.append(p)
if p in stop_sha1:
break
# walk the repository looking for commits that are in our
# reachability graph
for i in range(repo.changelog.count()-1, -1, -1):
n = repo.changelog.node(i)
mask = is_reachable(want_sha1, reachable, n)
if mask:
if not full:
print hg.hex(n)
elif full is "commit":
print hg.hex(n)
catcommit(repo, n, ' ')
else:
changes = repo.changelog.read(n)
(p1, p2) = repo.changelog.parents(n)
(h, h1, h2) = map(hg.hex, (n, p1, p2))
(i1, i2) = map(repo.changelog.rev, (p1, p2))
date = changes[2].split(' ')[0]
print "%s %s:%s" % (date, h, mask),
mask = is_reachable(want_sha1, reachable, p1)
if i1 != -1 and mask > 0:
print "%s:%s " % (h1, mask),
mask = is_reachable(want_sha1, reachable, p2)
if i2 != -1 and mask > 0:
print "%s:%s " % (h2, mask),
print ""
if maxnr and count >= maxnr:
break
count += 1
# git rev-list tries to order things by date, and has the ability to stop
# at a given commit without walking the whole repo. TODO add the stop
# parameter
def revlist(args, repo):
doptions = {}
opts = [('c', 'commit', None, 'commit'),
('n', 'max-nr', 0, 'max-nr')]
args = fancyopts.fancyopts(args, opts, doptions,
'hg rev-list')
if doptions['commit']:
full = "commit"
else:
full = None
for i in range(1, len(args)):
args[i] = '^' + args[i]
revtree(args, repo, full, doptions['max-nr'])
def catchterm(*args):
raise SignalInterrupt
def help():
sys.stderr.write("commands:\n")
sys.stderr.write(" hgit cat-file [type] sha1\n")
sys.stderr.write(" hgit diff-tree [-p] [-r] sha1 sha1\n")
sys.stderr.write(" hgit rev-tree [sha1 ... [^stop sha1]]\n")
sys.stderr.write(" hgit rev-list [-c]\n")
cmd = sys.argv[1]
args = sys.argv[2:]
u = ui.ui()
signal.signal(signal.SIGTERM, catchterm)
repo = hg.repository(ui = u)
if cmd == "diff-tree":
difftree(args, u, repo)
elif cmd == "cat-file":
catfile(args, u, repo)
elif cmd == "rev-tree":
revtree(args, repo)
elif cmd == "rev-list":
revlist(args, repo)
elif cmd == "help":
help()
else:
if cmd: sys.stderr.write("unknown command\n\n")
help()
sys.exit(1)
sys.exit(0)