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Diffstat (limited to 'lisp/org/ob-latex.el')
| -rw-r--r-- | lisp/org/ob-latex.el | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/lisp/org/ob-latex.el b/lisp/org/ob-latex.el new file mode 100644 index 00000000000..e5b01463a51 --- /dev/null +++ b/lisp/org/ob-latex.el @@ -0,0 +1,158 @@ +;;; ob-latex.el --- org-babel functions for latex "evaluation" + +;; Copyright (C) 2009, 2010 Free Software Foundation, Inc. + +;; Author: Eric Schulte +;; Keywords: literate programming, reproducible research +;; Homepage: http://orgmode.org +;; Version: 7.01 + +;; 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 <http://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 'ob) + +(declare-function org-create-formula-image "org" (string tofile options buffer)) +(declare-function org-splice-latex-header "org" + (tpl def-pkg pkg snippets-p &optional extra)) +(declare-function org-export-latex-fix-inputenc "org-latex" ()) + +(add-to-list 'org-babel-tangle-lang-exts '("latex" . "tex")) + +(defvar org-babel-default-header-args:latex + '((:results . "latex") (:exports . "results")) + "Default arguments to use when evaluating a LaTeX source block.") + +(defun org-babel-expand-body:latex (body params &optional processed-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))) (nth 1 (org-babel-process-params params))) + body) + +(defvar org-format-latex-options) +(defvar org-export-latex-packages-alist) +(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 (assoc :file params)) + (let ((out-file (cdr (assoc :file params))) + (tex-file (make-temp-file "org-babel-latex" nil ".tex")) + (pdfheight (cdr (assoc :pdfheight params))) + (pdfwidth (cdr (assoc :pdfwidth params))) + (in-buffer (not (string= "no" (cdr (assoc :buffer params))))) + (org-export-latex-packages-alist + (append (cdr (assoc :packages params)) + org-export-latex-packages-alist))) + (cond + ((string-match "\\.png$" out-file) + (org-create-formula-image + body out-file org-format-latex-options in-buffer)) + ((string-match "\\.pdf$" out-file) + (org-babel-latex-body-to-tex-file tex-file body pdfheight pdfwidth) + (when (file-exists-p out-file) (delete-file out-file)) + (rename-file (org-babel-latex-tex-to-pdf tex-file) out-file)) + ((string-match "\\.\\([^\\.]+\\)$" out-file) + (error "can not create %s files, please specify a .png or .pdf file" + (match-string 1 out-file)))) + out-file) + body)) + +(defvar org-format-latex-header) +(defvar org-format-latex-header-extra) +(defvar org-export-latex-packages-alist) +(defvar org-export-latex-default-packages-alist) +(defun org-babel-latex-body-to-tex-file (tex-file body &optional height width) + "Place the contents of BODY into TEX-FILE. +Extracted from `org-create-formula-image' in org.el." + (with-temp-file tex-file + (insert (org-splice-latex-header + org-format-latex-header + (delq + nil + (mapcar + (lambda (el) (unless (and (listp el) (string= "hyperref" (cadr el))) + el)) + org-export-latex-default-packages-alist)) + org-export-latex-packages-alist + org-format-latex-header-extra) + (if height (concat "\n" (format "\\pdfpageheight %s" height)) "") + (if width (concat "\n" (format "\\pdfpagewidth %s" width)) "") + (if org-format-latex-header-extra + (concat "\n" org-format-latex-header-extra) + "") + "\n\\begin{document}\n" body "\n\\end{document}\n") + (org-export-latex-fix-inputenc))) + +(defvar org-export-pdf-logfiles) +(defvar org-latex-to-pdf-process) +(defvar org-export-pdf-remove-logfiles) +(defun org-babel-latex-tex-to-pdf (tex-file) + "Generate a pdf file according to the contents TEX-FILE. +Extracted from `org-export-as-pdf' in org-latex.el." + (let* ((wconfig (current-window-configuration)) + (default-directory (file-name-directory tex-file)) + (base (file-name-sans-extension tex-file)) + (pdffile (concat base ".pdf")) + (cmds org-latex-to-pdf-process) + (outbuf (get-buffer-create "*Org PDF LaTeX Output*")) + cmd) + (if (and cmds (symbolp cmds)) + (funcall cmds tex-file) + (while cmds + (setq cmd (pop cmds)) + (while (string-match "%b" cmd) + (setq cmd (replace-match + (save-match-data + (shell-quote-argument base)) + t t cmd))) + (while (string-match "%s" cmd) + (setq cmd (replace-match + (save-match-data + (shell-quote-argument tex-file)) + t t cmd))) + (shell-command cmd outbuf outbuf))) + (if (not (file-exists-p pdffile)) + (error "PDF file was not produced from %s" tex-file) + (set-window-configuration wconfig) + (when org-export-pdf-remove-logfiles + (dolist (ext org-export-pdf-logfiles) + (setq tex-file (concat base "." ext)) + (and (file-exists-p tex-file) (delete-file tex-file)))) + pdffile))) + +(defun org-babel-prep-session:latex (session params) + "Return an error because LaTeX doesn't support sesstions." + (error "LaTeX does not support sessions")) + +(provide 'ob-latex) + +;; arch-tag: 1f13f7e2-26de-4c24-9274-9f331d4c6ff3 + +;;; ob-latex.el ends here |