lisp/muse-latex.el

   1 ;;; muse-latex.el --- publish entries in LaTex or PDF format
   2
   3 ;; Copyright (C) 2004, 2005  Free Software Foundation, Inc.
   4
   5 ;; This file is not part of GNU Emacs.
   6
   7 ;; This is free software; you can redistribute it and/or modify it under
   8 ;; the terms of the GNU General Public License as published by the Free
   9 ;; Software Foundation; either version 2, or (at your option) any later
  10 ;; version.
  11 ;;
  12 ;; This is distributed in the hope that it will be useful, but WITHOUT
  13 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 ;; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 ;; for more details.
  16 ;;
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  19 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 ;; Boston, MA 02110-1301, USA.
  21
  22 ;;; Commentary:
  23
  24 ;;; Contributors:
  25
  26 ;; Li Daobing (lidaobing AT gmail DOT com) provided CJK support.
  27 ;;
  28 ;; Trent Buck (trentbuck AT gmail DOT com) gave valuable advice for
  29 ;; how to treat LaTeX specials and the like.
  30
  31 ;;; Code:
  32
  33 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  34 ;;
  35 ;; Muse LaTeX Publishing
  36 ;;
  37 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  38
  39 (require 'muse-publish)
  40
  41 (defgroup muse-latex nil
  42   "Rules for marking up a Muse file as a LaTeX article."
  43   :group 'muse-publish)
  44
  45 (defcustom muse-latex-extension ".tex"
  46   "Default file extension for publishing LaTeX files."
  47   :type 'string
  48   :group 'muse-latex)
  49
  50 (defcustom muse-latex-pdf-extension ".pdf"
  51   "Default file extension for publishing LaTeX files to PDF."
  52   :type 'string
  53   :group 'muse-latex)
  54
  55 (defcustom muse-latex-header
  56   "\\documentclass{article}
  57
  58 \\usepackage[english]{babel}
  59 \\usepackage[latin1]{inputenc}
  60 \\usepackage[T1]{fontenc}
  61 \\usepackage{hyperref}
  62 \\usepackage[pdftex]{graphicx}
  63
  64 \\newcommand{\\comment}[1]{}
  65
  66 \\begin{document}
  67
  68 \\title{<lisp>(muse-publishing-directive \"title\")</lisp>}
  69 \\author{<lisp>(muse-publishing-directive \"author\")</lisp>}
  70 \\date{<lisp>(muse-publishing-directive \"date\")</lisp>}
  71
  72 \\maketitle
  73
  74 <lisp>(and muse-publish-generate-contents
  75            \"\\\\tableofcontents\n\\\\newpage\")</lisp>\n\n"
  76   "Header used for publishing LaTeX files.  This may be text or a filename."
  77   :type 'string
  78   :group 'muse-latex)
  79
  80 (defcustom muse-latex-footer "\n\\end{document}\n"
  81   "Footer used for publishing LaTeX files.  This may be text or a filename."
  82   :type 'string
  83   :group 'muse-latex)
  84
  85 (defcustom muse-latexcjk-header
  86   "\\documentclass{article}
  87
  88 \\usepackage{CJK}
  89 \\usepackage{indentfirst}
  90 \\usepackage[CJKbookmarks=true]{hyperref}
  91 \\usepackage[pdftex]{graphicx}
  92
  93 \\begin{document}
  94 \\begin{CJK*}<lisp>(muse-latexcjk-encoding)</lisp>
  95
  96 \\title{<lisp>(muse-publishing-directive \"title\")</lisp>}
  97 \\author{<lisp>(muse-publishing-directive \"author\")</lisp>}
  98 \\date{<lisp>(muse-publishing-directive \"date\")</lisp>}
  99
 100 \\maketitle
 101
 102 <lisp>(and muse-publish-generate-contents
 103            \"\\\\tableofcontents\n\\\\newpage\")</lisp>\n\n"
 104   "Header used for publishing LaTeX files (CJK).  This may be text or a
 105 filename."
 106   :type 'string
 107   :group 'muse-latex)
 108
 109 (defcustom muse-latexcjk-footer
 110   "\n\\end{CJK*}
 111 \\end{document}\n"
 112   "Footer used for publishing LaTeX files (CJK).  This may be text or a
 113 filename."
 114   :type 'string
 115   :group 'muse-latex)
 116
 117 (defcustom muse-latex-markup-regexps
 118   `(;; numeric ranges
 119     (10000 "\\([0-9]+\\)-\\([0-9]+\\)" 0 "\\1--\\2")
 120
 121     ;; characters which need quoting
 122     (10010 "\\([$#%]\\)" 0 "\\\\\\1")
 123     (10020 "_" 0 "\\\\textunderscore{}")
 124     (10030 "<" 0 "\\\\textless{}")
 125     (10040 ">" 0 "\\\\textgreater{}")
 126     (10050 "\\^" 0 "\\\\^{}")
 127
 128     ;; be careful of closing quote pairs
 129     (10100 "\"'" 0 "\"\\\\-'")
 130
 131     ;; join together the parts of a list or table
 132     (10200 ,(concat
 133              "\\\\end{\\(tabular\\|description\\|itemize\\|enumerate\\)}"
 134              "\\([" muse-regexp-blank "]*\n\\)\\{0,2\\}"
 135              "[" muse-regexp-blank "]*"
 136              "\\\\begin{\\1}\\({[^\n}]+}\\)?\n+") 0 ""))
 137   "List of markup regexps for identifying regions in a Muse page.
 138 For more on the structure of this list, see `muse-publish-markup-regexps'."
 139   :type '(repeat (choice
 140                   (list :tag "Markup rule"
 141                         integer
 142                         (choice regexp symbol)
 143                         integer
 144                         (choice string function symbol))
 145                   function))
 146   :group 'muse-latex)
 147
 148 (defcustom muse-latex-markup-functions
 149   '((anchor . muse-latex-markup-anchor)
 150     (table . muse-latex-markup-table))
 151   "An alist of style types to custom functions for that kind of text.
 152 For more on the structure of this list, see
 153 `muse-publish-markup-functions'."
 154   :type '(alist :key-type symbol :value-type function)
 155   :group 'muse-latex)
 156
 157 (defcustom muse-latex-markup-strings
 158   '((image-with-desc . "\\includegraphics[width=\\textwidth]{%s}")
 159     (image-link      . "\\includegraphics[width=\\textwidth]{%s}")
 160     (url-with-image  . "%% %s\n\\includegraphics[width=\\textwidth]{%s}")
 161     (url-link        . "\\href{%s}{%s}")
 162     (internal-link   . "\\hyperlink{%s}{%s}")
 163     (email-addr      . "\\verb|%s|")
 164     (emdash          . "---")
 165     (comment-begin   . "\\comment{")
 166     (commend-end     . "}")
 167     (rule            . "\\bigskip")
 168     (enddots         . "\\ldots{}")
 169     (dots            . "\\dots{}")
 170     (part            . "\\part{")
 171     (part-end        . "}")
 172     (chapter         . "\\chapter{")
 173     (chapter-end     . "}")
 174     (section         . "\\section{")
 175     (section-end     . "}")
 176     (subsection      . "\\subsection{")
 177     (subsection-end  . "}")
 178     (subsubsection   . "\\subsubsection{")
 179     (subsubsection-end . "}")
 180     (section-other   . "\\paragraph{")
 181     (section-other-end . "}")
 182     (footnote        . "\\footnote{")
 183     (footnote-end    . "}")
 184     (footnotemark    . "\\footnotemark[%d]")
 185     (footnotetext    . "\\footnotetext[%d]{")
 186     (footnotetext-end . "}")
 187     (begin-underline . "\\underline{")
 188     (end-underline   . "}")
 189     (begin-literal   . "\\texttt{")
 190     (end-literal     . "}")
 191     (begin-emph      . "\\emph{")
 192     (end-emph        . "}")
 193     (begin-more-emph . "\\textbf{")
 194     (end-more-emph   . "}")
 195     (begin-most-emph . "\\textbf{\\emph{")
 196     (end-most-emph   . "}}")
 197     (begin-verse     . "\\begin{verse}\n")
 198     (end-verse-line  . " \\\\")
 199     (verse-space     . "~~~~")
 200     (end-verse       . "\n\\end{verse}")
 201     (begin-example   . "\\begin{quote}\n\\begin{verbatim}")
 202     (end-example     . "\\end{verbatim}\n\\end{quote}")
 203     (begin-center    . "\\begin{center}\n")
 204     (end-center      . "\n\\end{center}")
 205     (begin-quote     . "\\begin{quote}\n")
 206     (end-quote       . "\n\\end{quote}")
 207     (begin-uli       . "\\begin{itemize}\n\\item ")
 208     (end-uli         . "\n\\end{itemize}")
 209     (begin-oli       . "\\begin{enumerate}\n\\item ")
 210     (end-oli         . "\n\\end{enumerate}")
 211     (begin-ddt       . "\\begin{description}\n\\item[")
 212     (start-dde       . "] ")
 213     (end-ddt         . "\\end{description}"))
 214   "Strings used for marking up text.
 215 These cover the most basic kinds of markup, the handling of which
 216 differs little between the various styles."
 217   :type '(alist :key-type symbol :value-type string)
 218   :group 'muse-latex)
 219
 220 (defcustom muse-latexcjk-encoding-map
 221   '((utf-8              . "{UTF8}{song}")
 222     (japanese-iso-8bit  . "[dnp]{JIS}{min}")
 223     (chinese-big5       . "{Bg5}{bsmi}")
 224     (mule-utf-8         . "{UTF8}{song}")
 225     (chinese-iso-8bit   . "{GB}{song}")
 226     (chinese-gbk        . "{GBK}{song}"))
 227   "An alist mapping emacs coding systems to appropriate CJK codings.
 228 Use the base name of the coding system (ie, without the -unix)."
 229   :type '(alist :key-type coding-system :value-type string)
 230   :group 'muse-latex)
 231
 232 (defcustom muse-latexcjk-encoding-default "{GB}{song}"
 233   "The default Emacs buffer encoding to use in published files.
 234 This will be used if no special characters are found."
 235   :type 'string
 236   :group 'muse-latex)
 237
 238 (defun muse-latexcjk-encoding ()
 239   (when (boundp 'buffer-file-coding-system)
 240     (muse-latexcjk-transform-content-type buffer-file-coding-system)))
 241
 242 (defun muse-latexcjk-transform-content-type (content-type)
 243   "Using `muse-cjklatex-encoding-map', try and resolve an emacs coding
 244 system to an associated CJK coding system."
 245   (let ((match (and (fboundp 'coding-system-base)
 246                     (assoc (coding-system-base content-type)
 247                            muse-latexcjk-encoding-map))))
 248     (if match
 249         (cdr match)
 250       muse-latexcjk-encoding-default)))
 251
 252 (defcustom muse-latex-markup-specials
 253   '((?\\ . "\\\\"))
 254   "A table of characters which must be represented specially."
 255   :type '(alist :key-type character :value-type string)
 256   :group 'muse-latex)
 257
 258 (defcustom muse-latex-markup-texttt-specials
 259   '((?\n . "\\\n")
 260     (?_  . "\\textunderscore{}")
 261     (?\< . "\\textless{}")
 262     (?\> . "\\textgreater{}")
 263     (?^  . "\\^{}")
 264     (?\$ . "\\$")
 265     (?\% . "\\%")
 266     (?\{ . "\\{")
 267     (?\} . "\\}")
 268     (?\& . "\\&")
 269     (?\# . "\\#"))
 270   "A table of characters which must be represented specially.
 271 This applies to text in \\texttt{} regions."
 272   :type '(alist :key-type character :value-type string)
 273   :group 'muse-latex)
 274
 275 (defun muse-latex-insert-anchor (anchor)
 276   "Insert an anchor, either around the word at point, or within a tag.
 277 If the anchor occurs at the end of a line, ignore it."
 278   (unless (bolp)      ; point is placed after newline if anchor at end
 279     (skip-chars-forward muse-regexp-space)
 280     (if (looking-at "<\\([^ />]+\\)>")
 281         (let ((tag (match-string 1)))
 282           (goto-char (match-end 0))
 283           (insert "\\hypertarget{" anchor "}{")
 284           (or (and (search-forward (format "</%s>" tag)
 285                                    (muse-line-end-position) t)
 286                    (goto-char (match-beginning 0)))
 287               (forward-word 1))
 288           (insert "}"))
 289       (insert "\\hypertarget{" anchor "}{")
 290       (forward-word 1)
 291       (insert "}"))))
 292
 293 (defun muse-latex-markup-anchor ()
 294   (save-match-data
 295     (muse-latex-insert-anchor (match-string 1)))
 296   (match-string 1))
 297
 298 (defun muse-latex-markup-table ()
 299   (let* ((str (prog1
 300                   (match-string 1)
 301                 (delete-region (match-beginning 0) (match-end 0))))
 302          (fields (split-string str "\\s-*|+\\s-*"))
 303          (type (and (string-match "\\s-*\\(|+\\)\\s-*" str)
 304                     (length (match-string 1 str)))))
 305     (insert "\\begin{tabular}{" (make-string (length fields) ?l) "}\n")
 306     (when (= type 3)
 307       (insert "\\hline\n"))
 308     (insert (mapconcat 'identity fields " & "))
 309     (insert " \\\\\n")
 310     (when (= type 2)
 311       (insert "\\hline\n"))
 312     (insert "\\end{tabular}")))
 313
 314 (defun muse-latex-fixup-dquotes ()
 315   "Fixup double quotes."
 316   (let ((open t))
 317     (while (search-forward "\"" nil t)
 318       (unless (get-text-property (match-beginning 0) 'read-only)
 319         (if (and (bolp) (eq (char-before) ?\n))
 320             (setq open t))
 321         (if open
 322             (progn
 323               (replace-match "``")
 324               (setq open nil))
 325           (replace-match "''")
 326           (setq open t))))))
 327
 328 (defun muse-latex-fixup-texttt ()
 329   "Escape extra characters in texttt sections."
 330   (let ((inhibit-read-only t)
 331         beg end)
 332     (while (and (< (point) (point-max))
 333                 (setq beg (search-forward "\\texttt{" nil t)))
 334       (goto-char (next-single-property-change (point) 'read-only))
 335       (backward-char)
 336       (setq end (point-marker))
 337       (goto-char beg)
 338       (while (< (point) end)
 339         (let ((repl (assoc (char-after) muse-latex-markup-texttt-specials)))
 340           (if (null repl)
 341               (forward-char 1)
 342             (delete-char 1)
 343             (insert-before-markers (cdr repl))))))))
 344
 345 (defun muse-latex-finalize-buffer ()
 346   (goto-char (point-min))
 347   (muse-latex-fixup-dquotes)
 348   (goto-char (point-min))
 349   (muse-latex-fixup-texttt))
 350
 351 (defun muse-latex-pdf-browse-file (file)
 352   (shell-command (concat "open " file)))
 353
 354 (defun muse-latex-pdf-generate (file output-path final-target)
 355   (muse-publish-transform-output
 356    file output-path final-target "PDF"
 357    (function
 358     (lambda (file output-path)
 359       (let ((command (format "cd \"%s\"; pdflatex \"%s\""
 360                              (file-name-directory output-path) file))
 361             (times 0)
 362             result)
 363         ;; XEmacs can sometimes return a non-number result.  We'll err
 364         ;; on the side of caution by continuing to attempt to generate
 365         ;; the PDF if this happens and treat the final result as
 366         ;; successful.
 367         (while (and (< times 3)
 368                     (or (not (numberp result))
 369                         (not (eq result 0))))
 370           (setq result (shell-command command)
 371                 times (1+ times)))
 372         (if (or (not (numberp result))
 373                 (eq result 0))
 374             t
 375           nil))))
 376    ".aux" ".toc" ".out" ".log"))
 377
 378 (unless (assoc "latex" muse-publishing-styles)
 379   (muse-define-style "latex"
 380                      :suffix    'muse-latex-extension
 381                      :regexps   'muse-latex-markup-regexps
 382                      :functions 'muse-latex-markup-functions
 383                      :strings   'muse-latex-markup-strings
 384                      :specials  'muse-latex-markup-specials
 385                      :after     'muse-latex-finalize-buffer
 386                      :header    'muse-latex-header
 387                      :footer    'muse-latex-footer
 388                      :browser   'find-file)
 389
 390   (muse-derive-style "pdf" "latex"
 391                      :final   'muse-latex-pdf-generate
 392                      :browser 'muse-latex-pdf-browse-file
 393                      :link-suffix 'muse-latex-pdf-extension
 394                      :osuffix 'muse-latex-pdf-extension)
 395
 396   (muse-derive-style "latexcjk" "latex"
 397                      :header    'muse-latexcjk-header
 398                      :footer    'muse-latexcjk-footer)
 399
 400   (muse-derive-style "pdfcjk" "latexcjk"
 401                      :final   'muse-latex-pdf-generate
 402                      :browser 'muse-latex-pdf-browse-file
 403                      :link-suffix 'muse-latex-pdf-extension
 404                      :osuffix 'muse-latex-pdf-extension))
 405
 406 (provide 'muse-latex)
 407
 408 ;;; muse-latex.el ends here