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From: Chico Sokol <chico.sokol@gmail.com>
To: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Cc: git <git@vger.kernel.org>
Subject: Re: Exact format of tree objets
Date: Tue, 18 Jun 2013 12:15:52 -0300	[thread overview]
Message-ID: <CABx5MBTtvyZT+TUj6iibFngbMnGoDvFT2wXM6oDACtuJ46kR7Q@mail.gmail.com> (raw)
In-Reply-To: <20130611182649.GA24704@LK-Perkele-VII>

What is the encoding of the filename?


--
Chico Sokol


On Tue, Jun 11, 2013 at 3:26 PM, Ilari Liusvaara
<ilari.liusvaara@elisanet.fi> wrote:
> On Tue, Jun 11, 2013 at 01:25:14PM -0300, Chico Sokol wrote:
>> Is there any official documentation of tree objets format? Are tree
>> objects encoded specially in some way? How can I parse the inflated
>> contents of a tree object?
>
> Tree object consists of entries, each concatenation of:
> - Octal mode (using ASCII digits 0-7).
> - Single SPACE (0x20)
> - Filename
> - Single NUL (0x00)
> - 20-byte binary SHA-1 of referenced object.
>
> At least following octal modes are known:
> 40000: Directory (tree).
> 100644: Regular file (blob).
> 100755: Executable file (blob).
> 120000: Symbolic link (blob).
> 160000: Submodule (commit).
>
> The entries are always sorted in (bytewise) lexicographical order,
> except directories sort like there was impiled '/' at the end.
>
> So e.g.:
> ! < 0 < 9 < a < a- < a- (directory) < a (directory) < a0 < ab < b < z.
>
>
> The idea of sorting directories specially is that if one recurses
> upon hitting a directory and uses '/' as path separator, then the
> full filenames are in bytewise lexicographical order.
>
> -Ilari

  reply	other threads:[~2013-06-18 15:16 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-11 16:25 Exact format of tree objets Chico Sokol
2013-06-11 18:26 ` Ilari Liusvaara
2013-06-18 15:15   ` Chico Sokol [this message]
2013-06-18 17:47     ` Thomas Rast
2013-06-11 18:38 ` Junio C Hamano
2013-06-12 14:06   ` Jakub Narebski
2013-06-18 13:53     ` Chico Sokol

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