mercurial/strutil.py

convert: fix relative import of stdlib module in subversion

Before this patch, import-checker reports "relative import of stdlib
module" error for importing Pool and SubversionException from svn.core
in subversion.py.

To fix this relative import of stdlib module, this patch adds prefix
'svn.core.' to Pool and SubversionException in source.

These 'svn.core.' relative accessing shouldn't cause performance
impact, because there are much more code paths accessing to
'svn.core.' relative properties.

BTW, in transport.py, this error is avoided by assignment below.

    SubversionException = svn.core.SubversionException

But this can't be used in subversion.py case, because:

  - such assignment in indented code block causes "don't use camelcase
    in identifiers" error of check-code.py

  - but it should be placed in indented block, because svn is None at
    failure of importing subversion python binding libraries (=
    examination of 'svn' is needed)

# 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.

from __future__ import absolute_import

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