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largefiles: access to specific fields only if largefiles enabled (issue4547)...
largefiles: access to specific fields only if largefiles enabled (issue4547) Even if largefiles extension is enabled in a repository, "repo" object, which isn't "largefiles.reposetup()"-ed, is passed to overridden functions in the cases below unexpectedly, because extensions are enabled for each repositories strictly. (1) clone without -U: (2) pull with -U: (3) pull with --rebase: combination of "enabled@src", "disabled@dst" and "not-required@src" cause this situation. largefiles requirement @src @dst @src result -------- -------- --------------- -------------------- enabled disabled not-required aborted unexpectedly required requirement error (intentional) -------- -------- --------------- -------------------- enabled enabled * success -------- -------- --------------- -------------------- disabled enabled * success (only for "pull") -------- -------- --------------- -------------------- disabled disabled not-required success required requirement error (intentional) -------- -------- --------------- -------------------- (4) update/revert with a subrepo disabling largefiles In these cases, overridden functions cause accessing to largefiles specific fields of not "largefiles.reposetup()"-ed "repo" object, and execution is aborted. - (1), (2), (4) cause accessing to "_lfstatuswriters" in "getstatuswriter()" invoked via "updatelfiles()" - (3) causes accessing to "_lfcommithooks" in "overriderebase()" For safe accessing to these fields, this patch examines whether passed "repo" object is "largefiles.reposetup()"-ed or not before accessing to them. This patch chooses examining existence of newly introduced "_largefilesenabled" instead of "_lfcommithooks" and "_lfstatuswriters" directly, because the former is better name for the generic "largefiles is enabled in this repo" mark than the latter. In the future, all other overridden functions should avoid largefiles specific processing for efficiency, and "_largefilesenabled" is better also for such purpose. BTW, "lfstatus" can't be used for such purpose, because some code paths set it forcibly regardless of existence of it in specified "repo" object.
Eric Sumner - - Load All Authors

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#!/usr/bin/env python
#
# Copyright 2014 Matt Mackall <mpm@selenic.com>
#
# A tool/hook to run basic sanity checks on commits/patches for
# submission to Mercurial. Install by adding the following to your
# .hg/hgrc:
#
# [hooks]
# pretxncommit = contrib/check-commit
#
# The hook can be temporarily bypassed with:
#
# $ BYPASS= hg commit
#
# See also: http://mercurial.selenic.com/wiki/ContributingChanges
import re, sys, os
errors = [
(r"[(]bc[)]", "(BC) needs to be uppercase"),
(r"[(]issue \d\d\d", "no space allowed between issue and number"),
(r"[(]bug", "use (issueDDDD) instead of bug"),
(r"^# User [^@\n]+$", "username is not an email address"),
(r"^# .*\n(?!merge with )[^#]\S+[^:] ",
"summary line doesn't start with 'topic: '"),
(r"^# .*\n[A-Z][a-z]\S+", "don't capitalize summary lines"),
(r"^# .*\n.*\.\s+$", "don't add trailing period on summary line"),
(r"^# .*\n.{78,}", "summary line too long"),
(r"^\+\n \n", "adds double empty line"),
(r"\+\s+def [a-z]+_[a-z]", "adds a function with foo_bar naming"),
]
node = os.environ.get("HG_NODE")
if node:
commit = os.popen("hg export %s" % node).read()
else:
commit = sys.stdin.read()
exitcode = 0
for exp, msg in errors:
m = re.search(exp, commit, re.MULTILINE)
if m:
pos = 0
for n, l in enumerate(commit.splitlines(True)):
pos += len(l)
if pos >= m.end():
print "%d: %s" % (n, msg)
print " %s" % l[:-1]
if "BYPASS" not in os.environ:
exitcode = 1
break
sys.exit(exitcode)