comparison mercurial/util.py @ 15390:fffe49886a51 stable

util: allow sha1() with no args

Normally this works because we replace util.sha1 with hashlib.sha1
after first use, but if the first user doesn't provide an arg, it
breaks.

15389:3bece03bf3c6

unlinkpath = platform.unlinkpath
username = platform.username

# Python compatibility

def sha1(s):
    return _fastsha1(s)

_notset = object()
def safehasattr(thing, attr):
    return getattr(thing, attr, _notset) is not _notset

def _fastsha1(s):
    # This function will import sha1 from hashlib or sha (whichever is
    # available) and overwrite itself with it on the first call.
    # Subsequent calls will go directly to the imported function.
    if sys.version_info >= (2, 5):
        from hashlib import sha1 as _sha1

15390:fffe49886a51

unlinkpath = platform.unlinkpath
username = platform.username

# Python compatibility

def sha1(s=''):
    return _fastsha1(s)

_notset = object()
def safehasattr(thing, attr):
    return getattr(thing, attr, _notset) is not _notset

def _fastsha1(s=''):
    # This function will import sha1 from hashlib or sha (whichever is
    # available) and overwrite itself with it on the first call.
    # Subsequent calls will go directly to the imported function.
    if sys.version_info >= (2, 5):
        from hashlib import sha1 as _sha1