[NTG-context] Version control tags in context (was Logos in context / Miscellaneous questions)

21 Sep 2007

      On Tue, 18 Sep 2007, Edd Barrett wrote:
...
Hi,
On 17/09/2007, Aditya Mahajan  wrote:
...
On Mon, 17 Sep 2007, Edd Barrett wrote:
...
B) Is there an equivilent to the RCS package for latex. Basically it
parses version control tags from CVS/RCS.
There are a couple of RCS packages for LaTeX. Can you elaborate on
what functionality you need. Most of it is pretty straightforward to
port to ConTeXt.
I used to use it to insert tags without all the crud around it. So for
example a revision  id directly from CVS looks like this "$Revision:
1.4$" (no quotes) and I used to use \RCSRevision which would expand to
just "1.4". It's probably quote simple, but would require research (I
have but merely scratched the surface of TeX/Context).
Here is a very preliminary version.

\def\defineVERSION
   {\dosingleargument\dodefineVERSION}

\def\dodefineVERSION[#1]%
   {\dododefineVERSION#1}

\def\dododefineVERSION$#1: #2$%
   {\setvalue{VERSION:#1}{#2}}

\def\getVERSION#1{\getvalue{VERSION:#1}}

\defineVERSION[$Revision: 1.4$]

\defineVERSION
 	[$File: something$]

\starttext
This file, \getVERSION{File}, is at version \getVERSION{Revision}
\stoptext

I changed the interface to make it more ConTeXtish. AFAIU version 
control, this should work with RCS, CVS, and subversion. It is not too 
hard to extend this to $Data:$ and $Id:$.

Aditya