Datestamp on Reports

[Michael Hendry]

On 9 Oct 2013, at 07:48, mcmurchy1917-gnucash at yahoo.co.uk wrote:

> My view is that would indicate a syntax error. The probable reason is that the date routines aren't available to your script.
>  
> Try this quick test
>  
> Start up a command line interface for bash or ksh or whatever is your favourite scripting environment. At the command line prompt type 
>  
> 	guile

Thanks, mcmurchy1917.

It took me some time to find guile on my iMac, as it doesn't appear in the path, and isn't accessible via the Finder's Search feature.

I eventually found it here...

/Applications/LilyPond.app/Contents/Resources/bin/guile

and your suggestions below were all accurate.

>  
> then at the guile prompt type 
>  
> 	(display (date->string (current-date) "Printed at ~d/~m/~Y ~H:~M:~S"))
>  
> If the date routines aren't available you should get this error - 
>  
> 	Backtrace:
> 	In standard input:
>    	1: 0* [display ...
>    	1: 1*  (date->string (current-date) "Printed at ~d/~m/~Y ~H:~M:~S")
>  
> 	standard input:1:10: In expression (date->string (current-date) "Printed 		at ~d/~m/~Y ~H:~M:~S"):
> 	standard input:1:10: Unbound variable: date->string
> 	ABORT: (unbound-variable)
>  
>  
> Now include the date routines by typing at the guile prompt
>  
> 	(use-modules (srfi srfi-19)) ; for extra date functions
>  
> and try again 
>  
> 	(display (date->string (current-date) "Printed at ~d/~m/~Y ~H:~M:~S"))
>  
> It should work this time. To get out of guile use ctrl-d
>  
>  
> To include the date routine in my script I have this line in my version of "balsheet-eg.scm" -
>  
> (use-modules (srfi srfi-19)) ; for extra date functions

This worked, too.

>  
>  
> I hope this helps.

Certainly did! 

Now that you've shown me the way, I expect I'll spend many more (marginally) productive hours tweaking GnuCash reports!

Michael

>  
>  
>  
>  
>  
>  
> On Tuesday 08 Oct 2013 16:42:01 Michael Hendry wrote:
> > On 8 Oct 2013, at 08:42, Michael Hendry <hendry.michael at gmail.com> wrote:
> > > On 7 Oct 2013, at 21:54, mcmurchy1917-gnucash at yahoo.co.uk wrote:
> > >> In my customised Balance report called  balsheet-eg.eguile.scm
> > >> 
> > >> I have this code -
> > >> 
> > >> <br clear="both">
> > >> <center>
> > >> <p><?scm:d opt-extra-notes ?>
> > >> <p><?scm
> > >> (display (date->string (current-date) "Printed at ~d/~m/~Y ~H:~M:~S"))
> > >> ?>
> > >> </center>
> > >> <?scm (if (not css?) (begin ?>
> > >> </table> <!-- hack for GTKHTML -->
> > >> <?scm )) ?>
> > >> 
> > >> </body>
> > >> </html>
> > >> 
> > >> <?scm
> > >> ) ; enclosing let
> > >> ?>
> > >> 
> > >> 
> > >> Regards
> > > 
> > > Thanks - that looks like the best route.
> > > 
> > > Trying to avoid hacking, and use the tools provided, I'd been looking into
> > > making adjustments to the Stylesheets - in particular the Footer one.
> > > 
> > > I found that simple HTML could be included, such as enclosing a string in
> > > <B>…</B> to make it appear in bold print, but then ran into the buffers
> > > when I found that HTML code couldn't be used to generate the current
> > > date, and that I couldn't readily use server-side code such as Javascript
> > > or PHP without putting my gnucash-generated HTML on a server.
> > > 
> > > I shall study your code fragment, and once I understand what it's doing,
> > > I'll see if I get it to work for me.
> > > 
> > > Regards
> > > 
> > > Michael
> > 
> > PS
> > 
> > I've inserted the additional lines as above, but I get the following at the
> > bottom of the report...
> > 
> > (Development version -- don't rely on the numbers on this report without
> > double-checking them. Change the 'Extra Notes' option to get rid of this
> > message)
> > 
> > An error occurred when processing the template:
> > 
> > ERROR: Unbound variable: date->string
> > In current input:
> >   30: 53* (let* (#) (letrec # # # ...))
> >    ?: 54  (letrec # # # ...)
> >  307: 55* [display ...
> >  307: 56*  (date->string (current-date) "Printed at ~d/~m/~Y ~H:~M:~S")
> > 
> > …and I'm afraid the error messages don't mean a lot to me!
> > 
> > Michael