From: Henning Redestig <henning.red@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: org babel before excute hook
Date: Sat, 12 Oct 2013 15:11:24 +0200 [thread overview]
Message-ID: <CAO8D54wZsKWye6hah-VsCR_tFomZJOMOAzSRbWOwdSvTZFn-bw@mail.gmail.com> (raw)
In-Reply-To: <loom.20131012T040759-761@post.gmane.org>
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I thought about temp files, but that makes the file names cryptic which is
inconvenient for communication without people outside org.. also, I tend
recompile figures many times which would cause a lot of cluttering files
that are hard to delete since you don't know which file is the one
currently linked in your org file...
Anyway, I made this instead which appears to work as I intended
(defun org-babel-about-to-overwrite-file ()
(let ((info (org-babel-get-src-block-info)))
(setq result-file (cdr (assoc :file (nth 2 info))))
(if (save-excursion
(goto-char 0)
(re-search-forward (concat ":file +" result-file) nil t)
(re-search-forward (concat ":file +" result-file) nil t))
(message (concat result-file " defined in more than one source block"))
(org-babel-execute-maybe))))
(add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-about-to-overwrite-file)
2013/10/12 Charles Berry <ccberry@ucsd.edu>
> John Kitchin <jkitchin <at> andrew.cmu.edu> writes:
>
> >
> >
> >
> > I have a related kind of problem. When preparing notes
> > for a class, I may end up with 70 code blocks in an org file, many of
> > which create graphics. I am always worried about accidentally using the
> > same filename and overwriting a graphic from an earlier block. A unique,
> > but reproducible filename would be sufficient for my needs.
> >
>
> Header arg values can be elisp calls. You can use `make-temp-file'.
>
> So every time this block is executed, a new file is created and the
> file link is added to the results.
>
> #+BEGIN_SRC R :results output append :file (make-temp-file "temp")
> cat(date(),"\n")
> #+END_SRC
>
> #+RESULTS:
> [[file:/var/folders/kb/2hchpbyj7lb6z76l0q73w_fh0000gn/T/temp302IjV]]
> [[file:/var/folders/kb/2hchpbyj7lb6z76l0q73w_fh0000gn/T/temp3028Lu]]
>
> See `temporary-file-directory', too, if you want to use this, as the
> default may not be what you intend.
>
>
> You might want to use this:
>
> #+BEGIN_SRC emacs-lisp
> (defun local-tfile (file)
> (let ((temporary-file-directory "."))
> (make-temp-file file)))
> #+END_SRC
>
> Then the files go in the local directory when this is executed:
>
> #+BEGIN_SRC R :file (local-tfile "tfile") :results output append
> cat(date(),"\n")
> #+END_SRC
>
> You might not want `append' in this case.
>
>
> HTH,
>
> Chuck
>
> [rest deleted]
>
>
>
>
>
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next prev parent reply other threads:[~2013-10-12 13:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-11 13:56 org babel before excute hook Henning Redestig
2013-10-11 20:31 ` John Kitchin
2013-10-12 2:28 ` Charles Berry
2013-10-12 13:11 ` Henning Redestig [this message]
2013-10-13 21:22 ` Henning Redestig
2013-10-13 21:35 ` Samuel Wales
2013-10-14 6:45 ` Henning Redestig
2013-10-14 8:11 ` [babel] Feature request - WAS: " Rainer M Krug
2013-10-14 13:24 ` Eric Schulte
2013-10-26 22:05 ` Samuel Wales
2013-10-14 13:29 ` Eric Schulte
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