view mercurial/strutil.py @ 15505:ae04af1ce78d stable

makedate: wrong timezone offset if DST rules changed this year (issue2511)

Python's time module sets timezone and altzone based on UTC offsets of
two dates: first and middle day of the current year. This approach
doesn't work on a year when DST rules change.

For example Russia abandoned winter time this year, so the correct UTC
offset should be +4 now, but time.timezone returns 3 hours difference
because that's what it was on 01.01.2011.

Related python issue: http://bugs.python.org/issue1647654

# strutil.py - string utilities for Mercurial
#
# Copyright 2006 Vadim Gelfer <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

def findall(haystack, needle, start=0, end=None):
    if end is None:
        end = len(haystack)
    if end < 0:
        end += len(haystack)
    if start < 0:
        start += len(haystack)
    while start < end:
        c = haystack.find(needle, start, end)
        if c == -1:
            break
        yield c
        start = c + 1

def rfindall(haystack, needle, start=0, end=None):
    if end is None:
        end = len(haystack)
    if end < 0:
        end += len(haystack)
    if start < 0:
        start += len(haystack)
    while end >= 0:
        c = haystack.rfind(needle, start, end)
        if c == -1:
            break
        yield c
        end = c - 1