contrib/fuzz/manifest_corpus.py

narrow: use narrow_widen wireproto command to widen in case of ellipses

Few releases ago, we introduce narrow_widen wireproto command to be used to widen
narrow repositories. Before this patch, that was used in non-ellipses cases
only. In ellipses cases, we still do exchange.pull() which can pull more data
than required.

After this patch, the client will first check whether server supports doing
ellipses widening using wireproto command or not by checking server's wireproto
capability. If the server is upto date and support latest ellipses capability,
we call the wireproto command. Otherwise we fallback to exchange.pull() like
before.

The compat code make sure that things works even if one of the client or server
is old. The initial version of this patch does not had this compat code. It's
added to help Google release things smoothly internally. I plan to drop the
compat code before the upcoming major release.

Due to change to wireproto command, the code looks a bit dirty, next patches
will clean that up.

Differential Revision: https://phab.mercurial-scm.org/D6436

from __future__ import absolute_import, print_function

import argparse
import zipfile

ap = argparse.ArgumentParser()
ap.add_argument("out", metavar="some.zip", type=str, nargs=1)
args = ap.parse_args()

with zipfile.ZipFile(args.out[0], "w", zipfile.ZIP_STORED) as zf:
    zf.writestr("manifest_zero",
'''PKG-INFO\09b3ed8f2b81095a13064402e930565f083346e9a
README\080b6e76643dcb44d4bc729e932fc464b3e36dbe3
hg\0b6444347c629cc058d478023905cfb83b7f5bb9d
mercurial/__init__.py\0b80de5d138758541c5f05265ad144ab9fa86d1db
mercurial/byterange.py\017f5a9fbd99622f31a392c33ac1e903925dc80ed
mercurial/fancyopts.py\0b6f52e23e356748c5039313d8b639cda16bf67ba
mercurial/hg.py\023cc12f225f1b42f32dc0d897a4f95a38ddc8f4a
mercurial/mdiff.py\0a05f65c44bfbeec6a42336cd2ff0b30217899ca3
mercurial/revlog.py\0217bc3fde6d82c0210cf56aeae11d05a03f35b2b
mercurial/transaction.py\09d180df101dc14ce3dd582fd998b36c98b3e39aa
notes.txt\0703afcec5edb749cf5cec67831f554d6da13f2fb
setup.py\0ccf3f6daf0f13101ca73631f7a1769e328b472c9
tkmerge\03c922edb43a9c143682f7bc7b00f98b3c756ebe7
''')
    zf.writestr("badmanifest_shorthashes",
                "narf\0aa\nnarf2\0aaa\n")
    zf.writestr("badmanifest_nonull",
                "narf\0cccccccccccccccccccccccccccccccccccccccc\n"
                "narf2aaaaaaaaaaaaaaaaaaaa\n")