comparison mercurial/util.py @ 35754:fb0be099063f

util: move 'readexactly' in the util module

This function is used in multiple place, having it in util would be better.
(existing caller will be migrated in another series)

35753:069df0b952e8

        return fn
    for n in itertools.count(1):
        fn = '%s~%s~%s' % (f, tag, n)
        if fn not in ctx and fn not in others:
            return fn

35754:fb0be099063f

        return fn
    for n in itertools.count(1):
        fn = '%s~%s~%s' % (f, tag, n)
        if fn not in ctx and fn not in others:
            return fn

def readexactly(stream, n):
    '''read n bytes from stream.read and abort if less was available'''
    s = stream.read(n)
    if len(s) < n:
        raise error.Abort(_("stream ended unexpectedly"
                           " (got %d bytes, expected %d)")
                          % (len(s), n))
    return s