annotate mercurial/txnutil.py @ 36309:94a1ff16f362

debuginstall: do not parse editor command in posix way on Windows An editor command is executed by a system shell, which is cmd.exe on Windows.
author Yuya Nishihara <yuya@tcha.org>
date Sat, 17 Feb 2018 13:13:04 +0900
parents 206532700213
children 2372284d9457
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
31050
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
1 # txnutil.py - transaction related utilities
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
2 #
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
3 # Copyright FUJIWARA Katsunori <foozy@lares.dti.ne.jp> and others
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
4 #
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
5 # This software may be used and distributed according to the terms of the
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
6 # GNU General Public License version 2 or any later version.
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
7
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
8 from __future__ import absolute_import
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
9
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
10 import errno
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
11
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
12 from . import (
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
13 encoding,
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
14 )
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
15
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
16 def mayhavepending(root):
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
17 '''return whether 'root' may have pending changes, which are
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
18 visible to this process.
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
19 '''
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
20 return root == encoding.environ.get('HG_PENDING')
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
21
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
22 def trypending(root, vfs, filename, **kwargs):
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
23 '''Open file to be read according to HG_PENDING environment variable
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
24
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
25 This opens '.pending' of specified 'filename' only when HG_PENDING
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
26 is equal to 'root'.
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
27
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
28 This returns '(fp, is_pending_opened)' tuple.
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
29 '''
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
30 if mayhavepending(root):
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
31 try:
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
32 return (vfs('%s.pending' % filename, **kwargs), True)
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
33 except IOError as inst:
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
34 if inst.errno != errno.ENOENT:
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
35 raise
206532700213 txnutil: factor out the logic to read file in according to HG_PENDING
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
diff changeset
36 return (vfs(filename, **kwargs), False)