determine if the tree is dirty

determine if the tree is dirty

[Adam Mercer]

Hi

As part of a python script I need to determine if a tree has any
uncommitted changes, so far I am been using:

  # determine tree status
  status_cmd = 'git status'
  status_output = run_external_command(status_cmd,
honour_ret_code=False)[1].strip()
  if status_output.endswith('no changes added to commit (use "git add"
and/or "git commit -a")'):
    git_status = 'UNCLEAN: Some modifications not committed'
  else:
    git_status = 'CLEAN: All modifications committed'

but I feel that this relies to heavily on the porcelain and that there
should be a better way to accomplish this without relying on parsing
the output of git-status.

Does anyone know of a better way to accomplish this?

Cheers

Adam

Re: determine if the tree is dirty

[Jeff Epler]

On Tue, Nov 03, 2009 at 12:57:37PM -0600, Adam Mercer wrote:
> As part of a python script I need to determine if a tree has any
> uncommitted changes

GIT-VERSION-GEN uses something like this (shell script):
        git update-index -q --refresh
        test -z "$(git diff-index --name-only HEAD --)" || VN="$VN-dirty" ;;

Jeff

Re: determine if the tree is dirty

[Junio C Hamano]

Adam Mercer <ramercer@gmail.com> writes:

> As part of a python script I need to determine if a tree has any
> uncommitted changes, so far I am been using:
>
>   # determine tree status
>   status_cmd = 'git status'
>   status_output = run_external_command(status_cmd,
> honour_ret_code=False)[1].strip()
>   if status_output.endswith('no changes added to commit (use "git add"
> and/or "git commit -a")'):
>     git_status = 'UNCLEAN: Some modifications not committed'
>   else:
>     git_status = 'CLEAN: All modifications committed'
>
> but I feel that this relies to heavily on the porcelain and that there
> should be a better way to accomplish this without relying on parsing
> the output of git-status.
>
> Does anyone know of a better way to accomplish this?

Use plumbing commands.

"git diff-files" will show changes you have in the work tree compared to
the index.

"git diff-index HEAD" will show changes you have in the work tree compared
to the HEAD.

"git diff-index --cached HEAD" will show changes you have in the index
compared to the HEAD.

Re: determine if the tree is dirty

[Adam Mercer]

On Tue, Nov 3, 2009 at 13:06, Jeff Epler <jepler@unpythonic.net> wrote:

> GIT-VERSION-GEN uses something like this (shell script):
>        git update-index -q --refresh
>        test -z "$(git diff-index --name-only HEAD --)" || VN="$VN-dirty" ;;

On Tue, Nov 3, 2009 at 13:19, Junio C Hamano <gitster@pobox.com> wrote:

> Use plumbing commands.
>
> "git diff-files" will show changes you have in the work tree compared to
> the index.
>
> "git diff-index HEAD" will show changes you have in the work tree compared
> to the HEAD.
>
> "git diff-index --cached HEAD" will show changes you have in the index
> compared to the HEAD.

Fantastic, this is exactly what I was after! Thanks!

Cheers

Adam

Re: determine if the tree is dirty

[Markus Hitter]

Am 03.11.2009 um 19:57 schrieb Adam Mercer:

> As part of a python script I need to determine if a tree has any
> uncommitted changes, so far I am been using:
> [...]
> Does anyone know of a better way to accomplish this?

I'm using

git ls-files -m -o -d --exclude-standard

If it returns anything, your repo is dirty.


Markus

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Dipl. Ing. Markus Hitter
http://www.jump-ing.de/