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Re: [RFC PATCH 2/3] sha1-array: support appending unsigned char hash

From
Stefan Beller <sbeller@google.com>
Date
Jul 20, 2017, 00:06 UTC
Message-ID
<CAGZ79kYCr_Ozt3sa5FffgY-kzwAnGc2rTFEQ1AzeruURXQsYmA@mail.gmail.com>
In-Reply-To
<20170719165622.78e463fd@twelve2.svl.corp.google.com>
On Wed, Jul 19, 2017 at 4:56 PM, Jonathan Tan <jonathantanmy@google.com> wrote:
Show 16 quoted lines
> On Tue, 11 Jul 2017 15:06:11 -0700
> Stefan Beller <sbeller@google.com> wrote:
>
>> On Tue, Jul 11, 2017 at 12:48 PM, Jonathan Tan <jonathantanmy@google.com> wrote:
>> > In a subsequent patch, sha1_file will need to append object names in the
>> > form of "unsigned char *" to oid arrays. Teach sha1-array support for
>> > that.
>> >
>> > Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
>>
>> This breaks the oid/sha1 barrier?
>
> Not sure what you mean by this. This patch is meant to be a change to
> make "unsigned char *"-using code able to create/modify oid arrays,
> while we migrate away from "unsigned char *" - I don't know of any
> barrier.
In my mind we have 2 states:
* the current state where we have "char *sha1"
* the future in which we have "struct object_id oid"

In both realms you can do things (and the current code base has examples for both), but these 2 are connected via only a couple well defined functions (sha1_to_hex, oid_to_sha1) during the conversion phase.

So with that mindset I was slightly irritated to see a function that uses both realms so interchangeably.

Revisiting that it is actually not that bad, but also a good idea to have in the transition phase.

Sorry for the noise, Stefan

Previous: Jonathan TanNext: Jonathan Tan
Message 15 of 45 in “Partial clone: promised blobs (formerly "missing blobs")”
  1. 0/3 Partial clone: promised blobs (formerly "missing blobs")Jonathan Tan, Jul 11, 2017
  2. 1/3 promised-blob, fsck: introduce promised blobsJonathan Tan, Jul 11, 2017
  3. Stefan BellerJul 11, 2017
  4. Jonathan TanJul 19, 2017
  5. Jeff HostetlerJul 12, 2017
  6. Jonathan NiederJul 12, 2017
  7. Jeff HostetlerJul 13, 2017
  8. Jeff HostetlerJul 13, 2017
  9. Jonathan TanJul 13, 2017
  10. Jeff HostetlerJul 14, 2017
  11. Jonathan NiederJul 14, 2017
  12. 2/3 sha1-array: support appending unsigned char hashJonathan Tan, Jul 11, 2017
  13. Stefan BellerJul 11, 2017
  14. Jonathan TanJul 19, 2017
  15. Stefan BellerJul 20, 2017
  16. 3/3 sha1_file: add promised blob hook supportJonathan Tan, Jul 11, 2017
  17. Stefan BellerJul 11, 2017
  18. Ben PeartJul 12, 2017
  19. Jonathan NiederJul 12, 2017
  20. Philip OakleyJul 16, 2017
  21. Ben PeartJul 17, 2017
  22. Philip OakleyJul 25, 2017
  23. Jonathan NiederJul 17, 2017
  24. Philip OakleyJul 29, 2017
  25. 0/4 Partial clone: promised objects (not only blobs)Jonathan Tan, Jul 20, 2017
  26. 1/4 object: remove "used" field from struct objectJonathan Tan, Jul 20, 2017
  27. Stefan BellerJul 20, 2017
  28. Jonathan TanJul 20, 2017
  29. Ben PeartJul 20, 2017
  30. Junio C HamanoJul 20, 2017
  31. 2/4 promised-object, fsck: introduce promised objectsJonathan Tan, Jul 20, 2017
  32. Stefan BellerJul 20, 2017
  33. Jonathan TanJul 20, 2017
  34. Ben PeartJul 20, 2017
  35. Jonathan TanJul 20, 2017
  36. Ben PeartJul 21, 2017
  37. Jonathan TanJul 21, 2017
  38. Ben PeartJul 25, 2017
  39. Philip OakleyJul 29, 2017
  40. 3/4 sha1-array: support appending unsigned char hashJonathan Tan, Jul 20, 2017
  41. 4/4 sha1_file: support promised object hookJonathan Tan, Jul 20, 2017
  42. Stefan BellerJul 20, 2017
  43. Ben PeartJul 20, 2017
  44. Jonathan TanJul 20, 2017
  45. Ben PeartJul 21, 2017

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