[PATCH v11 0/5] [GSoC] remove_subtree(): reimplement using iterators

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This is the eleventh version of a patch series that implements the GSoC
microproject of converting a recursive call to readdir() to use
dir_iterator.

v1: https://public-inbox.org/git/CAGZ79kZwT-9mHTiOJ5CEjk2wDFkn6+NcogjX0=vjhsAh16ANYg@xxxxxxxxxxxxxx/T/#t
v2: https://public-inbox.org/git/CACsJy8Dxh-QPBBLfaFWPAWUsbA9GVXA7x+mXLjEvYKhk1zOpig@xxxxxxxxxxxxxx/T/#t
v3: https://public-inbox.org/git/CAGZ79kYtpmURSQWPumobA=e3JBFjKhWCdv_LPhKCd71ZRwMovA@xxxxxxxxxxxxxx/T/#t
v4: https://public-inbox.org/git/1490747533-89143-1-git-send-email-bnmvco@xxxxxxxxx/T/#e437a63e0c22c00c69b5d92977c9b438ed2b9fd3a
v5: https://public-inbox.org/git/1490844730-47634-1-git-send-email-bnmvco@xxxxxxxxx/T/#m2323f15e45de699f2e09364f40a62e17047cf453
v6: https://public-inbox.org/git/1491107726-21504-1-git-send-email-bnmvco@xxxxxxxxx/T/#t
v7: https://public-inbox.org/git/1491163388-41255-1-git-send-email-bnmvco@xxxxxxxxx/T/#t
v8: https://public-inbox.org/git/a60b2ed6-2b99-b134-05af-7c8492a6949c@xxxxxxxxxxxx/T/#t
v9: https://public-inbox.org/git/CAGZ79kaBRS0SFAvrV4mN7-mVk+8QmPKPJMD55zPQ+A14ZzYFYA@xxxxxxxxxxxxxx/T/#me8988b7dd4adbc4ea24946ccb24fc1cf7baf44e3
v10: https://public-inbox.org/git/xmqqk26fahjn.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxxx/T/#m3071006ec67457adf69578b37f55b625d0e7fed7

Travis CI build: https://travis-ci.org/theiostream/git/builds/226079792

Okay, in this version I factored in Junio's request for a test rename
to t0066, and most of Michael's suggestions from the last review. I'm
sorry for the delay on this one.

Instead of either removing the iterate root dir feature or return NULL
as its basename, I chose to get the real_path() out of the dir we are
iterating over and get the basename of that, to avoid the "/." or "/.."
issues. I think this is actually less complex than the NULL solution in
terms of code that would end up needing to be written, and I think the
root dir feature is handy to have on dir-iterator.

As for the suggestion to put strerror() on the test, I feared for the
message compatibility across platforms (since we actually check which
errno code we got). If you could give me a guarantee that this is not a
problem and you think it'd be worthy of yet another series, I'm up for
it.

As for Junio's concern for a rebase issue on the test script, the
reason for it was that the same file is used across two tests, so it
seemed unnecessary to recreate the file within each of them.

Daniel Ferreira (5):
  dir_iterator: add tests for dir_iterator API
  remove_subtree(): test removing nested directories
  dir_iterator: refactor dir_iterator_advance
  dir_iterator: rewrite state machine model
  remove_subtree(): reimplement using iterators

 Makefile                        |   1 +
 dir-iterator.c                  | 244 ++++++++++++++++++++++++++++------------
 dir-iterator.h                  |  35 ++++--
 entry.c                         |  42 +++----
 refs/files-backend.c            |  15 ++-
 t/helper/.gitignore             |   1 +
 t/helper/test-dir-iterator.c    |  53 +++++++++
 t/t0066-dir-iterator.sh         | 121 ++++++++++++++++++++
 t/t2000-checkout-cache-clash.sh |  11 ++
 9 files changed, 416 insertions(+), 107 deletions(-)
 create mode 100644 t/helper/test-dir-iterator.c
 create mode 100755 t/t0066-dir-iterator.sh

--
2.7.4 (Apple Git-66)




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