Mercurial > hg
annotate mercurial/strutil.py @ 23324:69f86b937035
cmdserver: protect pipe server streams against corruption caused by direct io
Because pipe-mode server uses stdio as IPC channel, other modules should not
touch stdio directly and use ui instead. However, this strategy is brittle
because several Python functions read and write stdio implicitly.
print 'hello' # should use ui.write()
# => ch = 'h', size = 1701604463 'ello', data = '\n'
This patch adds protection for such mistakes. Both stdio files and low-level
file descriptors are redirected to /dev/null while command server uses them.
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Sat, 15 Nov 2014 13:50:43 +0900 |
parents | 25e572394f5c |
children | b723f05ec49b |
rev | line source |
---|---|
2953 | 1 # strutil.py - string utilities for Mercurial |
2 # | |
3 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> | |
4 # | |
8225
46293a0c7e9f
updated license to be explicit about GPL version 2
Martin Geisler <mg@lazybytes.net>
parents:
8155
diff
changeset
|
5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
2953 | 7 |
8 def findall(haystack, needle, start=0, end=None): | |
9 if end is None: | |
10 end = len(haystack) | |
11 if end < 0: | |
12 end += len(haystack) | |
13 if start < 0: | |
14 start += len(haystack) | |
15 while start < end: | |
16 c = haystack.find(needle, start, end) | |
17 if c == -1: | |
18 break | |
19 yield c | |
20 start = c + 1 | |
21 | |
22 def rfindall(haystack, needle, start=0, end=None): | |
23 if end is None: | |
24 end = len(haystack) | |
25 if end < 0: | |
26 end += len(haystack) | |
27 if start < 0: | |
28 start += len(haystack) | |
29 while end >= 0: | |
30 c = haystack.rfind(needle, start, end) | |
31 if c == -1: | |
32 break | |
33 yield c | |
34 end = c - 1 |