From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniele Pizzolli <dan@toel.it>
Subject: Re: Insert git hash into exported document
Date: Fri, 23 Dec 2016 21:13:38 +0100
Message-ID: <87k2aqh099.fsf@toel.it>
References: <CAM6q_N43gFEK_ux6VuMMC2jrMU8p0rXzK98a4ip5rKGFtWxRzQ@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain
Return-path: <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:60457)
	by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <dan@toel.it>)
	id 1cKWD5-0004ln-9z
	for emacs-orgmode@gnu.org; Fri, 23 Dec 2016 15:13:00 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <dan@toel.it>) id 1cKWD2-0002uk-42
	for emacs-orgmode@gnu.org; Fri, 23 Dec 2016 15:12:59 -0500
Received: from relay4-d.mail.gandi.net ([2001:4b98:c:538::196]:56560)
	by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)
	(Exim 4.71) (envelope-from <dan@toel.it>) id 1cKWD1-0002uQ-U0
	for emacs-orgmode@gnu.org; Fri, 23 Dec 2016 15:12:56 -0500
In-reply-to: <CAM6q_N43gFEK_ux6VuMMC2jrMU8p0rXzK98a4ip5rKGFtWxRzQ@mail.gmail.com>
List-Id: "General discussions about Org-mode." <emacs-orgmode.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/emacs-orgmode/>
List-Post: <mailto:emacs-orgmode@gnu.org>
List-Help: <mailto:emacs-orgmode-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=subscribe>
Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
Sender: "Emacs-orgmode"
	<emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
To: David Talmage <david.talmage@shoutpoint.com>
Cc: Org Mode Mailing List <emacs-orgmode@gnu.org>


David Talmage writes:

> I'd like to insert the git hash of HEAD in the org-mode documents that I
> export.  Is there an easy way?  I'm exporting to LaTeX.

[]

Hello,

maybe you can start with a simple:

#+NAME: hash-from-lisp
#+BEGIN_SRC emacs-lisp
  (shell-command-to-string "git rev-parse HEAD" )
#+END_SRC

#+RESULTS: hash-from-lisp
: 099b6ceee7264832b8e13f1156974b8017e6e4bb

You can hide the result using proper headers or the noexport tag and
then print the result in a verbose way:

The latest commit hash is src_emacs-lisp[:var i=hash-from-lisp]{(format "%s" i)}

or if you enable the shell in babel you can start with:

#+NAME: hash-from-shell
#+BEGIN_SRC shell
git rev-parse HEAD
#+END_SRC

For latex only, I use the following snippets.  This works with gitinfo2
(in debian you need the packages texlive-latex-extra and
texlive-latex-extra-doc).  Sorry for the long lines...

Please note that this will also highlight the dirty status of the repo,
since adding the latest hash for a modified version make little sense.

Best,
Daniele

#+LATEX_HEADER: \usepackage[,missing={Unknown},dirty={-- Uncommited Changes!!!},notags={Unknown},mark]{gitinfo2}


#+LATEX: \renewcommand{\gitMarkPref}{Historical Info}
# NOTE: \gitTags does not work well: it adds a traling ")"
# NOTE: \gitReln takes the latest release, even there are more commits
#+LATEX: \renewcommand{\gitMark}{Version:\space{}\gitTags{}\space{}--\space{}Id::\space{}\gitAbbrevHash\space{}--\space{}Date:\space{}\gitAuthorIsoDate\space{}\gitDirty}


#+BEGIN_SRC emacs-lisp
  (defun update-gitinfo (backend)
    "Update .git/gitHeadInfo.gin"
    (message "Command: %s" (shell-command-to-string "cd `git rev-parse --show-toplevel` && /bin/bash /usr/share/doc/texlive-doc/latex/gitinfo2/post-xxx-sample.txt"))
    (message "Updated gitinfo"))

  (add-hook 'org-export-before-processing-hook #'update-gitinfo)
#+END_SRC