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Re: emacs-repository-version on MS-Windows
From: |
Andy Moreton |
Subject: |
Re: emacs-repository-version on MS-Windows |
Date: |
Sun, 16 Nov 2014 23:41:12 +0000 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (windows-nt) |
On Sun 16 Nov 2014, Eli Zaretskii wrote:
>> From: Andreas Schwab <address@hidden>
>> Cc: Eli Zaretskii <address@hidden>, address@hidden
>> Date: Sat, 15 Nov 2014 23:42:46 +0100
>>
>> > The bzr version of this intentionally avoided calling external executables.
>> > (Apparently not possible with git.)
>>
>> You can do that with git as well, the repository structure is fully
>> documented (gitrepository-layout(5)). Of course, you have to be
>> prepared to update the procedure in case of future extensions.
>
> So is the following algorithm correct?
>
> . visit the file .git/HEAD
> . if the contents is a SHA1 checksum, we are done: return that SHA1
> . otherwise:
> . parse the contents of .git/HEAD that should have the form
> "ref: refs/heads/BRANCH" where BRANCH is the name of the active
> branch
> . try visiting the file .git/refs/heads/BRANCH
> . if the file exists, its contents should be the SHA1 checksum we
> are looking for
> . otherwise:
> . visit the file .git/packed-refs, whose contents should be
> lines of the form "SHA1 REF"
> . find the line in that file whose REF part is "refs/heads/BRANCH"
> . the SHA1 part of that line is the checksum we are looking for
>
> Does this cover all the possible arrangements of the repository and
> all the possible workflows?
The descripriton of .git/HEAD in gitrepository-layout(5) suggests that
it can also be a symlink rather than a git symref.
AndyM
- Re: emacs-repository-version on MS-Windows, (continued)
- Re: emacs-repository-version on MS-Windows, Andreas Schwab, 2014/11/15
- Re: emacs-repository-version on MS-Windows, Eli Zaretskii, 2014/11/16
- Re: emacs-repository-version on MS-Windows, David Kastrup, 2014/11/16
- Re: emacs-repository-version on MS-Windows, Eli Zaretskii, 2014/11/16
- Re: emacs-repository-version on MS-Windows, David Kastrup, 2014/11/16
- Re: emacs-repository-version on MS-Windows, Andreas Schwab, 2014/11/16
- Re: emacs-repository-version on MS-Windows, Eli Zaretskii, 2014/11/16
- Re: emacs-repository-version on MS-Windows, Eli Zaretskii, 2014/11/16
- Re: emacs-repository-version on MS-Windows, Achim Gratz, 2014/11/16
- Re: emacs-repository-version on MS-Windows, Eli Zaretskii, 2014/11/16
- Re: emacs-repository-version on MS-Windows,
Andy Moreton <=
- Re: emacs-repository-version on MS-Windows, Eli Zaretskii, 2014/11/16
- Re: emacs-repository-version on MS-Windows, Glenn Morris, 2014/11/16
- Re: emacs-repository-version on MS-Windows, Eli Zaretskii, 2014/11/15