emacs-orgmode@gnu.org archives
 help / color / mirror / code / Atom feed
blob ce39628d642eed95ddfbd6b0dff0bdeb83870499 10919 bytes (raw)
name: lisp/ob-latex.el 	 # note: path name is non-authoritative(*)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
 
;;; ob-latex.el --- Babel Functions for LaTeX        -*- lexical-binding: t; -*-

;; Copyright (C) 2009-2023 Free Software Foundation, Inc.

;; Author: Eric Schulte
;; Keywords: literate programming, reproducible research
;; URL: https://orgmode.org

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; Org-Babel support for evaluating LaTeX source code.
;;
;; Currently on evaluation this returns raw LaTeX code, unless a :file
;; header argument is given in which case small png or pdf files will
;; be created directly form the latex source code.

;;; Code:

(require 'org-macs)
(org-assert-version)

(require 'ob)
(require 'org-macs)

(declare-function org-create-formula-image "org" (string tofile options buffer &optional type))
(declare-function org-latex-compile "ox-latex" (texfile &optional snippet))
(declare-function org-latex-guess-inputenc "ox-latex" (header))
(declare-function org-splice-latex-header "org" (tpl def-pkg pkg snippets-p &optional extra))
(declare-function org-at-heading-p "org" (&optional _))
(declare-function org-back-to-heading "org" (&optional invisible-ok))
(declare-function org-next-visible-heading "org" (arg))

(defvar org-babel-tangle-lang-exts)
(add-to-list 'org-babel-tangle-lang-exts '("latex" . "tex"))

(defvar org-format-latex-header)	  ; From org.el
(defvar org-format-latex-options)	  ; From org.el
(defvar org-latex-default-packages-alist) ; From org.el
(defvar org-latex-packages-alist)	  ; From org.el

(defvar org-babel-default-header-args:latex
  '((:results . "latex") (:exports . "results"))
  "Default arguments to use when evaluating a LaTeX source block.")

(defconst org-babel-header-args:latex
  '((border	  . :any)
    (fit          . :any)
    (imagemagick  . ((nil t)))
    (iminoptions  . :any)
    (imoutoptions . :any)
    (packages     . :any)
    (pdfheight    . :any)
    (pdfpng       . :any)
    (pdfwidth     . :any)
    (headers      . :any)
    (buffer       . ((yes no))))
  "LaTeX-specific header arguments.")

(defcustom org-babel-latex-htlatex "htlatex"
  "The htlatex command to enable conversion of LaTeX to SVG or HTML."
  :group 'org-babel
  :type 'string)

(defcustom org-babel-latex-preamble
  (lambda (_)
    "\\documentclass[preview]{standalone}
\\def\\pgfsysdriver{pgfsys-tex4ht.def}
")
  "Closure which evaluates at runtime to the LaTeX preamble.

It takes 1 argument which is the parameters of the source block."
  :group 'org-babel
  :type 'function)

(defcustom org-babel-latex-begin-env
  (lambda (_)
    "\\begin{document}")
  "Function that evaluates to the begin part of the document environment.

It takes 1 argument which is the parameters of the source block.
This allows adding additional code that will be ignored when
exporting the literal LaTeX source."
  :group 'org-babel
  :type 'function)

(defcustom org-babel-latex-end-env
  (lambda (_)
    "\\end{document}")
  "Closure which evaluates at runtime to the end part of the document environment.

It takes 1 argument which is the parameters of the source block.
This allows adding additional code that will be ignored when
exporting the literal LaTeX source."
  :group 'org-babel
  :type 'function)

(defcustom org-babel-latex-pdf-svg-process
  "inkscape \
--pdf-poppler \
--export-area-drawing \
--export-text-to-path \
--export-plain-svg \
--export-filename=%O \
%f"
  "Command to convert a PDF file to an SVG file."
  :group 'org-babel
  :type 'string
  :package-version '(Org . "9.6"))

(defcustom org-babel-latex-htlatex-packages
  '("[usenames]{color}" "{tikz}" "{color}" "{listings}" "{amsmath}")
  "Packages to use for htlatex export."
  :group 'org-babel
  :type '(repeat (string)))

(defun org-babel-expand-body:latex (body params)
  "Expand BODY according to PARAMS, return the expanded body."
  (mapc (lambda (pair) ;; replace variables
          (setq body
                (replace-regexp-in-string
                 (regexp-quote (format "%S" (car pair)))
                 (if (stringp (cdr pair))
                     (cdr pair) (format "%S" (cdr pair)))
                 body)))
	(org-babel--get-vars params))
  (org-trim body))

(defun org-babel-execute:latex (body params)
  "Execute a block of LaTeX code with Babel.
This function is called by `org-babel-execute-src-block'."
  (setq body (org-babel-expand-body:latex body params))
  (if (cdr (assq :file params))
      (let* ((out-file (cdr (assq :file params)))
	     (extension (file-name-extension out-file))
	     (tex-file (org-babel-temp-file "latex-" ".tex"))
	     (border (cdr (assq :border params)))
	     (imagemagick (cdr (assq :imagemagick params)))
	     (im-in-options (cdr (assq :iminoptions params)))
	     (im-out-options (cdr (assq :imoutoptions params)))
	     (fit (or (cdr (assq :fit params)) border))
	     (height (and fit (cdr (assq :pdfheight params))))
	     (width (and fit (cdr (assq :pdfwidth params))))
	     (headers (cdr (assq :headers params)))
	     (in-buffer (not (string= "no" (cdr (assq :buffer params)))))
	     (org-latex-packages-alist
	      (append (cdr (assq :packages params)) org-latex-packages-alist)))
        (cond
         ((and (string-suffix-p ".png" out-file) (not imagemagick))
          (let ((org-format-latex-header
		 (concat org-format-latex-header "\n"
			 (mapconcat #'identity headers "\n"))))
	    (org-create-formula-image
             body out-file org-format-latex-options in-buffer)))
	 ((string= "svg" extension)
	  (with-temp-file tex-file
	    (insert (concat (funcall org-babel-latex-preamble params)
			    (mapconcat #'identity headers "\n")
			    (funcall org-babel-latex-begin-env params)
			    body
			    (funcall org-babel-latex-end-env params))))
	  (let ((tmp-pdf (org-babel-latex-tex-to-pdf tex-file)))
            (let* ((log-buf (get-buffer-create "*Org Babel LaTeX Output*"))
                   (err-msg "org babel latex failed")
                   (img-out (org-compile-file
	                     tmp-pdf
                             (list org-babel-latex-pdf-svg-process)
                             extension err-msg log-buf)))
              (rename-file img-out out-file t))))
         ((string-suffix-p ".tikz" out-file)
	  (when (file-exists-p out-file) (delete-file out-file))
	  (with-temp-file out-file
	    (insert body)))
	 ((and (string= "html" extension)
	       (executable-find org-babel-latex-htlatex))
	  ;; TODO: this is a very different way of generating the
	  ;; frame latex document than in the pdf case.  Ideally, both
	  ;; would be unified.  This would prevent bugs creeping in
	  ;; such as the one fixed on Aug 16 2014 whereby :headers was
	  ;; not included in the SVG/HTML case.
	  (with-temp-file tex-file
	    (insert (concat
		     "\\documentclass[preview]{standalone}
\\def\\pgfsysdriver{pgfsys-tex4ht.def}
"
		     (mapconcat (lambda (pkg)
				  (concat "\\usepackage" pkg))
				org-babel-latex-htlatex-packages
				"\n")
		     (if headers
			 (concat "\n"
				 (if (listp headers)
				     (mapconcat #'identity headers "\n")
				   headers) "\n")
		       "")
		     "\\begin{document}"
		     body
		     "\\end{document}")))
	  (when (file-exists-p out-file) (delete-file out-file))
	  (let ((default-directory (file-name-directory tex-file)))
	    (shell-command (format "%s %s" org-babel-latex-htlatex tex-file)))
	  (cond
	   ((file-exists-p (concat (file-name-sans-extension tex-file) "-1.svg"))
	    (if (string-suffix-p ".svg" out-file)
		(progn
		  (shell-command "pwd")
                  (rename-file (concat (file-name-sans-extension tex-file) "-1.svg")
                               out-file t))
	      (error "SVG file produced but HTML file requested")))
	   ((file-exists-p (concat (file-name-sans-extension tex-file) ".html"))
	    (if (string-suffix-p ".html" out-file)
                (rename-file (concat (file-name-sans-extension tex-file) ".html")
                             out-file t)
              (error "HTML file produced but SVG file requested")))))
	 ((or (string= "pdf" extension) imagemagick)
	  (with-temp-file tex-file
	    (require 'ox-latex)
	    (insert
	     (org-latex-guess-inputenc
	      (org-splice-latex-header
	       org-format-latex-header
	       (delq
		nil
		(mapcar
		 (lambda (el)
		   (unless (and (listp el) (string= "hyperref" (cadr el)))
		     el))
		 org-latex-default-packages-alist))
	       org-latex-packages-alist
	       nil))
	     (if fit "\n\\usepackage[active, tightpage]{preview}\n" "")
	     (if border (format "\\setlength{\\PreviewBorder}{%s}" border) "")
	     (if height (concat "\n" (format "\\pdfpageheight %s" height)) "")
	     (if width  (concat "\n" (format "\\pdfpagewidth %s" width))   "")
	     (if headers
		 (concat "\n"
			 (if (listp headers)
			     (mapconcat #'identity headers "\n")
			   headers) "\n")
	       "")
	     (if fit
		 (concat "\n\\begin{document}\n\\begin{preview}\n" body
			 "\n\\end{preview}\n\\end{document}\n")
	       (concat "\n\\begin{document}\n" body "\n\\end{document}\n"))))
          (when (file-exists-p out-file) (delete-file out-file))
	  (let ((transient-pdf-file (org-babel-latex-tex-to-pdf tex-file)))
	    (cond
	     ((string= "pdf" extension)
	      (rename-file transient-pdf-file out-file))
	     (imagemagick
	      (org-babel-latex-convert-pdf
	       transient-pdf-file out-file im-in-options im-out-options)
	      (when (file-exists-p transient-pdf-file)
		(delete-file transient-pdf-file)))
	     (t
	      (error "Can not create %s files, please specify a .png or .pdf file or try the :imagemagick header argument"
		     extension))))))
        nil) ;; signal that output has already been written to file
    body))

(defun org-babel-latex-convert-pdf (pdffile out-file im-in-options im-out-options)
  "Generate a file from a pdf file using imagemagick."
  (let ((cmd (concat "convert " im-in-options " " pdffile " "
		     im-out-options " " out-file)))
    (message "Converting pdffile file %s..." cmd)
    (shell-command cmd)))

(defun org-babel-latex-tex-to-pdf (file)
  "Generate a pdf file according to the contents FILE."
  (require 'ox-latex)
  (org-latex-compile file))

(defun org-babel-prep-session:latex (_session _params)
  "Return an error because LaTeX doesn't support sessions."
  (error "LaTeX does not support sessions"))

(provide 'ob-latex)

;;; ob-latex.el ends here

debug log:

solving ce39628d6 ...
found ce39628d6 in https://git.savannah.gnu.org/cgit/emacs/org-mode.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).