144 lines
5.7 KiB
EmacsLisp
144 lines
5.7 KiB
EmacsLisp
;;; ob-latex.el --- org-babel functions for latex "evaluation"
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;; Copyright (C) 2009, 2010 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; Version: 0.01
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating LaTeX source code.
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;;
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;; Currently on evaluation this returns raw LaTeX code, unless a :file
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;; header argument is given in which case small png or pdf files will
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;; be created directly form the latex source code.
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;;; Code:
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(require 'ob)
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(add-to-list 'org-babel-tangle-lang-exts '("latex" . "tex"))
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(defvar org-babel-default-header-args:latex
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'((:results . "latex") (:exports . "results"))
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"Default arguments to use when evaluating a latex source block.")
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(defun org-babel-expand-body:latex (body params &optional processed-params)
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"Expand BODY according to PARAMS, return the expanded body."
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(mapc (lambda (pair) ;; replace variables
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(setq body
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(replace-regexp-in-string
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(regexp-quote (format "%S" (car pair)))
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(if (stringp (cdr pair))
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(cdr pair) (format "%S" (cdr pair)))
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body))) (second (org-babel-process-params params)))
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body)
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(defun org-babel-execute:latex (body params)
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"Execute a block of Latex code with org-babel. This function is
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called by `org-babel-execute-src-block'."
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(message "executing Latex source code block")
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(setq body (org-babel-expand-body:latex body params))
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(if (cdr (assoc :file params))
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(let ((out-file (cdr (assoc :file params)))
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(tex-file (make-temp-file "org-babel-latex" nil ".tex"))
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(pdfheight (cdr (assoc :pdfheight params)))
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(pdfwidth (cdr (assoc :pdfwidth params)))
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(in-buffer (not (string= "no" (cdr (assoc :buffer params)))))
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(org-export-latex-packages-alist
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(append (cdr (assoc :packages params))
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org-export-latex-packages-alist)))
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(cond
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((string-match "\\.png$" out-file)
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(org-create-formula-image
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body out-file org-format-latex-options in-buffer))
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((string-match "\\.pdf$" out-file)
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(org-babel-latex-body-to-tex-file tex-file body pdfheight pdfwidth)
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(when (file-exists-p out-file) (delete-file out-file))
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(rename-file (org-babel-latex-tex-to-pdf tex-file) out-file))
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((string-match "\\.\\([^\\.]+\\)$" out-file)
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(error
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(message "can not create %s files, please specify a .png or .pdf file"
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(match-string 1 out-file)))))
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out-file)
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body))
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(defun org-babel-latex-body-to-tex-file (tex-file body &optional height width)
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"Place the contents of BODY into TEX-FILE. Extracted from
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`org-create-formula-image' in org.el."
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(with-temp-file tex-file
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(insert (org-splice-latex-header
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org-format-latex-header
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(remove-if
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(lambda (el) (and (listp el) (string= "hyperref" (cadr el))))
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org-export-latex-default-packages-alist)
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org-export-latex-packages-alist
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org-format-latex-header-extra)
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(if height (concat "\n" (format "\\pdfpageheight %s" height)) "")
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(if width (concat "\n" (format "\\pdfpagewidth %s" width)) "")
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(if org-format-latex-header-extra
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(concat "\n" org-format-latex-header-extra)
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"")
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"\n\\begin{document}\n" body "\n\\end{document}\n")
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(org-export-latex-fix-inputenc)))
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(defun org-babel-latex-tex-to-pdf (tex-file)
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"Generate a pdf according to the contents TEX-FILE. Extracted
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from `org-export-as-pdf' in org-latex.el."
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(let* ((wconfig (current-window-configuration))
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(default-directory (file-name-directory tex-file))
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(base (file-name-sans-extension tex-file))
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(pdffile (concat base ".pdf"))
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(cmds org-latex-to-pdf-process)
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(outbuf (get-buffer-create "*Org PDF LaTeX Output*"))
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cmd)
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(if (and cmds (symbolp cmds))
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(funcall cmds tex-file)
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(while cmds
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(setq cmd (pop cmds))
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(while (string-match "%b" cmd)
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(setq cmd (replace-match
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(save-match-data
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(shell-quote-argument base))
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t t cmd)))
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(while (string-match "%s" cmd)
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(setq cmd (replace-match
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(save-match-data
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(shell-quote-argument tex-file))
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t t cmd)))
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(shell-command cmd outbuf outbuf)))
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(if (not (file-exists-p pdffile))
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(error "PDF file was not produced from %s" tex-file)
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(set-window-configuration wconfig)
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(when org-export-pdf-remove-logfiles
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(dolist (ext org-export-pdf-logfiles)
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(setq tex-file (concat base "." ext))
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(and (file-exists-p tex-file) (delete-file tex-file))))
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pdffile)))
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(defun org-babel-prep-session:latex (session params)
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"Create a session named SESSION according to PARAMS."
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(error "Latex does not support sessions"))
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(provide 'ob-latex)
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;; arch-tag: 1f13f7e2-26de-4c24-9274-9f331d4c6ff3
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;;; ob-latex.el ends here
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