#!/bin/sh

#

# revlog.parseindex must be able to parse the index file even if

# an index entry is split between two 64k blocks.  The ideal test

# would be to create an index file with inline data where

# 64k < size < 64k + 64 (64k is the size of the read buffer, 64 is

# the size of an index entry) and with an index entry starting right

# before the 64k block boundary, and try to read it.

#

# We approximate that by reducing the read buffer to 1 byte.

#

hg init a

cd a

echo abc > foo

hg add foo

hg commit -m 'add foo' -d '1000000 0'

echo >> foo

hg commit -m 'change foo' -d '1000001 0'

hg log -r 0:

cat >> test.py << EOF

from mercurial import changelog, util

from mercurial.node import *

class singlebyteread(object):

    def __init__(self, real):

        self.real = real

    def read(self, size=-1):

        if size == 65536:

            size = 1

        return self.real.read(size)

    def __getattr__(self, key):

        return getattr(self.real, key)

def opener(*args):

    o = util.opener(*args)

    def wrapper(*a):

        f = o(*a)

        return singlebyteread(f)

    return wrapper

cl = changelog.changelog(opener('.hg/store'))

    print short(cl.node(r))

EOF

python test.py