mirror of
https://github.com/dkogan/feedgnuplot.git
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81 lines
3.4 KiB
EmacsLisp
81 lines
3.4 KiB
EmacsLisp
;; Very similar logic appears in
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;; https://www.github.com/dkogan/gnuplotlib
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;; https://www.github.com/dkogan/feedgnuplot
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;;
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;; I need some advices to be able to generate all the images. I'm not using the org
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;; exporter to produce the html, but relying on github's limited org parser to
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;; display everything. github's parser doesn't do the org export, so I must
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;; pre-generate all the figures with (org-babel-execute-buffer) (C-c C-v C-b).
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;; This requires advices to:
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;; - Generate unique image filenames
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;; - Communicate those filenames to feedgnuplot
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;; - Display code that produces an interactive plot (so that the readers can
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;; cut/paste the snippets), but run code that writes to the image that ends up in
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;; the documentation
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(( org-mode . ((eval .
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(progn
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(setq org-confirm-babel-evaluate nil)
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(org-babel-do-load-languages
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'org-babel-load-languages
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'((shell . t)))
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;; This sets a default :file tag, set to a unique filename. I want each demo to
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;; produce an image, but I don't care what it is called. I omit the :file tag
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;; completely, and this advice takes care of it
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(defun dima-org-babel-sh-unique-plot-filename
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(f &optional arg info params)
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(let ((info-local (or info (org-babel-get-src-block-info t))))
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(if (and info-local
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(string= (car info-local) "sh")
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(not (assq :file (caddr info-local))))
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;; We're looking at an sh block with no :file. Add a default :file
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(funcall f arg info
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(cons (cons ':file
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(format "guide-%d.svg"
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(condition-case nil
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(setq dima-unique-plot-number (1+ dima-unique-plot-number))
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(error (setq dima-unique-plot-number 0)))))
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params))
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;; already have a :file or not sh. Just do the normal thing
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(funcall f arg info params))))
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(unless
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(advice-member-p
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#'dima-org-babel-sh-unique-plot-filename
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#'org-babel-execute-src-block)
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(advice-add
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#'org-babel-execute-src-block
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:around #'dima-org-babel-sh-unique-plot-filename))
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;; If I'm regenerating ALL the plots, I start counting the plots from 0
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(defun dima-reset-unique-plot-number
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(&rest args)
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(setq dima-unique-plot-number 0))
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(unless
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(advice-member-p
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#'dima-reset-unique-plot-number
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#'org-babel-execute-buffer)
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(advice-add
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#'org-babel-execute-buffer
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:before #'dima-reset-unique-plot-number))
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;; I'm using github to display guide.org, so I'm not using the "normal" org
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;; exporter. I want the demo text to not contain --hardcopy, but clearly I
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;; need --hardcopy when generating the plots. I add the --hardcopy to the
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;; command before running it
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(defun dima-org-babel-sh-set-demo-output (f body params)
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(with-temp-buffer
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(insert body)
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(end-of-buffer)
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(insert (format " --terminal 'svg noenhanced solid size 800,600 font \",14\"' --hardcopy %s" (cdr (assq :file params))))
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(setq body (buffer-substring-no-properties (point-min) (point-max))))
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(funcall f body params))
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(unless
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(advice-member-p
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#'dima-org-babel-sh-set-demo-output
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#'org-babel-execute:sh)
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(advice-add
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#'org-babel-execute:sh
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:around #'dima-org-babel-sh-set-demo-output))
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)))))
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