mercurial/strutil.py
author Jim Hague <jim.hague@acm.org>
Fri, 03 Feb 2012 23:27:17 +0000
branchstable
changeset 16071 8134ec8627e7
parent 10263 25e572394f5c
child 25979 b723f05ec49b
permissions -rw-r--r--
bdiff: fix malloc(0) issue in fixws() If fixws() is called on a zero-length string, malloc(0) is called and expected to return a pointer. Which it does on e.g. Linux. AIX returns NULL, which it is also legal, but the malloc() is then assumed to have failed. So ensure a valid pointer is always returned.

# strutil.py - string utilities for Mercurial
#
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
#
# 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