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   1 ;;; texi2latex.el --- convert a texi file into a LaTeX file.
   2 ;; Copyright (C) 1996 Lars Magne Ingebrigtsen
   3
   4 (require 'cl)
   5
   6 (defun latexi-discard-until (string)
   7   (let ((beg (match-beginning 0)))
   8     (unless (re-search-forward (concat "^@end +" string "[ \t]*\n") nil t)
   9       (error "No end: %s" string))
  10     (delete-region beg (match-end 0))))
  11
  12 (defun latexi-strip-line ()
  13   (delete-region (progn (beginning-of-line) (point))
  14                  (progn (forward-line 1) (point))))
  15
  16 (defun latexi-switch-line (command arg)
  17   (latexi-strip-line)
  18   (insert (format "\\%s{%s}\n" command arg)))
  19
  20 (defun latexi-index-command (command arg)
  21   (latexi-strip-line)
  22   (insert (format "\\gnus%sindex{%s}\n"
  23                   (if (equal command "kindex") "k" "")
  24                   arg)))
  25
  26 (defun latexi-begin-command (command)
  27   (latexi-strip-line)
  28   (insert (format "\\begin{%s}\n" command)))
  29
  30 (defun latexi-exchange-command (command arg)
  31   (delete-region (match-beginning 0) (match-end 0))
  32   (insert (format "\\%s{%s}" command arg)))
  33
  34 (defun latexi-translate ()
  35   "Translate."
  36   (interactive)
  37   (latexi-translate-file "gnus")
  38   (latexi-translate-file "gnus-faq")
  39   (latexi-translate-file "message" t)
  40   (latexi-translate-file "emacs-mime" t)
  41   (latexi-translate-file "sieve" t))
  42
  43 (defun latexi-translate-file (file &optional as-a-chapter)
  44   "Translate file a LaTeX file."
  45   (let ((item-string "")
  46         (item-stack nil)
  47         (list-stack nil)
  48         (latexi-buffer (get-buffer-create "*LaTeXi*"))
  49         verbatim
  50         (regexp
  51          (concat
  52             "@\\([^{} \t\n]+\\)"
  53             "\\(\\( +\\(.*$\\)\\|[ \t]*$\\)\\|{\\([^}]*\\)}\\)"))
  54         (cur (find-file-noselect (concat (or (getenv "srcdir") ".")
  55                                          "/" file ".texi")))
  56         (times 3)
  57         (chapter 0)
  58         command arg)
  59     (pop-to-buffer latexi-buffer)
  60     (buffer-disable-undo)
  61     (erase-buffer)
  62     (insert-buffer-substring cur)
  63     (goto-char (point-min))
  64     (latexi-strip-line)
  65     (latexi-translate-string "%@{" "\\gnuspercent{}\\gnusbraceleft{}")
  66     (latexi-translate-string "%@}" "\\gnuspercent{}\\gnusbraceright{}")
  67     (latexi-translate-string "%1@{" "\\gnuspercent{}1\\gnusbraceright{}")
  68     (latexi-translate-string "@*" "\\newline{}")
  69     (latexi-translate-string "S@{" "S\\gnusbraceleft{}")
  70     (latexi-translate-string "@code{\\222}" "@code{\\gnusbackslash{}222}")
  71     (latexi-translate-string "@code{\\264}" "@code{\\gnusbackslash{}264}")
  72     (latexi-translate-string "@samp{\\Deleted}" "@samp{\\gnusbackslash{}Deleted}")
  73     (latexi-translate-string "@samp{\\Seen}" "@samp{\\gnusbackslash{}Seen}")
  74     (latexi-translate-string "@file{c:\\myhome}" "@file{c:\\gnusbackslash{}myhome}")
  75 ;    (while (re-search-forward "{\"[^\"]*\\(\\\\\\)[^\"]*\"}\\\\" nil t)
  76 ;      (replace-match "\\verb+\\\\+ " t t))
  77     (while (not (zerop (decf times)))
  78       (goto-char (point-min))
  79       (while (re-search-forward regexp nil t)
  80         (setq command (match-string 1))
  81         (if (match-beginning 3)
  82             (progn
  83               (setq arg (or (match-string 4) ""))
  84               (save-match-data
  85                 (when (string-match "[ \t]+$" arg)
  86                   (setq arg (substring arg 0 (match-beginning 0)))))
  87               (cond
  88                ((member command '("c" "comment"))
  89                 (if (string-match "@icon" (or arg ""))
  90                     (progn
  91                       (beginning-of-line)
  92                       (delete-region (point) (+ (point) 4))
  93                       (insert "\\gnus"))
  94                   (delete-region (match-beginning 0)
  95                                  (progn (end-of-line) (point))))
  96                 (if (equal arg "@head")
  97                     (insert "\\gnusinteresting")))
  98                ((member command '("setfilename" "set"
  99                                   "synindex" "setchapternewpage"
 100                                   "summarycontents" "bye"
 101                                   "top" "iftex" "cartouche"
 102                                   "iflatex" "finalout" "vskip"
 103                                   "dircategory" "group"))
 104                 (latexi-strip-line))
 105                ((member command '("menu" "tex" "ifinfo" "ignore"
 106                                   "ifnottex" "direntry"))
 107                 (latexi-discard-until command))
 108                ((member command '("subsection" "subsubsection"))
 109                 (if as-a-chapter
 110                     (latexi-switch-line (format "sub%s" command) arg)
 111                   (latexi-switch-line command arg)))
 112                ((member command '("heading"))
 113                 (if as-a-chapter
 114                     (latexi-switch-line "subsection*" arg)
 115                   (latexi-switch-line "section*" arg)))
 116                ((member command '("subheading"))
 117                 (if as-a-chapter
 118                     (latexi-switch-line "subsubsection*" arg)
 119                   (latexi-switch-line "subsection*" arg)))
 120                ((member command '("subsubheading"))
 121                 (if as-a-chapter
 122                     (latexi-switch-line "subsubsubsection*" arg)
 123                   (latexi-switch-line "subsubsection*" arg)))
 124                ((member command '("chapter"))
 125                 (if (string-match "Index" arg)
 126                     (latexi-strip-line)
 127                   (if as-a-chapter
 128                       (latexi-switch-line "gnussection" arg)
 129                     (latexi-switch-line
 130                      (format
 131                       "gnus%s{%s}" command
 132                       (format "\\epsfig{figure=ps/new-herd-%d,scale=.5}"
 133                               (if (> (incf chapter) 9) 9 chapter)))
 134                      arg))))
 135                ((member command '("section"))
 136                 (if as-a-chapter
 137                     (latexi-switch-line "subsection" arg)
 138                   (latexi-switch-line (format "gnus%s" command) arg)))
 139                ((member command '("cindex" "findex" "kindex" "vindex"))
 140                 (latexi-index-command command arg))
 141                ((member command '("*"))
 142                 (delete-char -2)
 143                 (insert "\\\\"))
 144                ((equal command "sp")
 145                 (replace-match "" t t))
 146                ((member command '("deffn" "defvar" "defun"))
 147                 (replace-match "" t t))
 148                ((equal command "node")
 149                 (latexi-strip-line)
 150                 (unless (string-match "Index" arg)
 151                   (insert (format "\\label{%s}\n" arg))))
 152                ((equal command "contents")
 153                 (latexi-strip-line)
 154                 ;;(insert (format "\\tableofcontents\n" arg))
 155                 )
 156                ((member command '("titlepage"))
 157                 (latexi-begin-command command))
 158                ((member command '("lisp" "example" "smallexample" "display"))
 159                 (latexi-strip-line)
 160                 (insert (format "\\begin{verbatim}\n"))
 161                 (setq verbatim (point)))
 162                ((member command '("center"))
 163                 (latexi-strip-line)
 164                 (insert (format "\\begin{%s}%s\\end{%s}\n"
 165                                 command arg command)))
 166                ((member command '("end"))
 167                 (cond
 168                  ((member arg '("titlepage"))
 169                   (latexi-strip-line)
 170                   (insert (format "\\end{%s}\n" arg)))
 171                  ((equal arg "quotation")
 172                   (latexi-strip-line)
 173                   (insert (format "\\end{verse}\n")))
 174                  ((member arg '("lisp" "example" "smallexample" "display"))
 175                   (latexi-strip-line)
 176                   (save-excursion
 177                     (save-restriction
 178                       (narrow-to-region verbatim (point))
 179                       (goto-char (point-min))
 180                       (while (search-forward "@{" nil t)
 181                         (replace-match "{" t t))
 182                       (goto-char (point-min))
 183                       (while (search-forward "@}" nil t)
 184                         (replace-match "}" t t))))
 185                   (setq verbatim nil)
 186                   (insert "\\end{verbatim}\n"))
 187                  ((member arg '("table"))
 188                   (setq item-string (pop item-stack))
 189                   (latexi-strip-line)
 190                   (insert (format "\\end{%slist}\n" (pop list-stack))))
 191                  ((member arg '("itemize" "enumerate"))
 192                   (setq item-string (pop item-stack))
 193                   (latexi-strip-line)
 194                   (insert (format "\\end{%s}\n" arg)))
 195                  ((member arg '("iflatex" "iftex" "cartouche" "group"))
 196                   (latexi-strip-line))
 197                  ((member arg '("deffn" "defvar" "defun"))
 198                   (latexi-strip-line))
 199                  (t
 200                   (error "Unknown end arg: %s" arg))))
 201                ((member command '("table"))
 202                 (push item-string item-stack)
 203                 (push (substring arg 1) list-stack)
 204                 (setq item-string
 205                       (format "[@%s{%%s}]" (car list-stack)))
 206                 (latexi-strip-line)
 207                 (insert (format "\\begin{%slist}\n" (car list-stack))))
 208                ((member command '("itemize" "enumerate"))
 209                 (push item-string item-stack)
 210                 (cond
 211                  ((member arg '("@bullet"))
 212                   (setq item-string "[\\gnusbullet]"))
 213                  (t
 214                   (setq item-string "")))
 215                 (latexi-strip-line)
 216                 (insert (format "\\begin{%s}\n" command)))
 217                ((member command '("item"))
 218                 (latexi-strip-line)
 219                 (insert (format "\\%s%s\n" command (format item-string arg))))
 220                ((equal command "itemx")
 221                 (latexi-strip-line)
 222                 (insert (format "\\gnusitemx{%s}\n" (format item-string arg))))
 223                ((eq (aref command 0) ?@)
 224                 (goto-char (match-beginning 0))
 225                 (delete-char 2)
 226                 (insert "duppat{}"))
 227                ((equal command "settitle")
 228                 (latexi-strip-line)
 229                 (if (not as-a-chapter)
 230                     (insert
 231                      (format "\\newcommand{\\gnustitlename}{%s}\n" arg))))
 232                ((equal command "title")
 233                 (latexi-strip-line)
 234                 (insert (format "\\gnustitlename{%s}\n" arg)))
 235                ((equal command "author")
 236                 (latexi-strip-line)
 237                 (insert (format "\\gnusauthor{%s}\n" arg)))
 238                ((equal command "quotation")
 239                 (latexi-begin-command "verse"))
 240                ((equal command "page")
 241                 (latexi-strip-line)
 242                 (insert (format "\\newpage\n" arg)))
 243                ((equal command "'s")
 244                 (goto-char (match-beginning 0))
 245                 (delete-char 1))
 246                ((equal command "include")
 247                 (latexi-strip-line)
 248                 (string-match "\\.texi" arg)
 249                 (insert (format "\\input{%s.latexi}\n"
 250                                 (substring arg 0 (match-beginning 0)))))
 251                ((equal command "noindent")
 252                 (latexi-strip-line)
 253                 (insert "\\noindent\n"))
 254                ((equal command "printindex")
 255                 (latexi-strip-line)
 256                 ;;(insert
 257                 ;; (format
 258                 ;;  "\\begin{theindex}\\input{gnus.%s}\\end{theindex}\n" arg))
 259                 )
 260                (t
 261                 (error "Unknown command (file %s line %d): %s"
 262                        file
 263                        (save-excursion
 264                          (widen)
 265                          (1+ (count-lines (point-min) (progn
 266                                                         (beginning-of-line)
 267                                                         (point)))))
 268                        command))))
 269           ;; These are commands with {}.
 270           (setq arg (match-string 5))
 271           (cond
 272            ((member command '("anchor"))
 273             (latexi-strip-line))
 274            ((member command '("ref" "xref" "pxref"))
 275             (latexi-exchange-command (concat "gnus" command) arg))
 276            ((member command '("sc" "file" "dfn" "emph" "kbd" "key" "uref"
 277                               "code" "samp" "var" "strong" "i"
 278                               "result" "email" "env" "r"))
 279             (goto-char (match-beginning 0))
 280             (delete-char 1)
 281             (insert "\\gnus"))
 282            ((member command '("acronym"))
 283             (latexi-exchange-command (concat "gnus" command) (downcase arg)))
 284            ((member command '("copyright" "footnote" "TeX"))
 285             (goto-char (match-beginning 0))
 286             (delete-char 1)
 287             (insert "\\"))
 288            ((member command '("dots"))
 289             (goto-char (match-beginning 0))
 290             (delete-region (match-beginning 0) (match-end 0))
 291             (insert "..."))
 292            ((eq (aref command 0) ?@)
 293             (goto-char (match-beginning 0))
 294             (delete-char 2)
 295             (insert "duppat{}"))
 296            (t
 297             (error "Unknown command (file %s line %d): %s"
 298                    file
 299                    (save-excursion
 300                      (widen)
 301                      (1+ (count-lines (point-min) (progn
 302                                                     (beginning-of-line)
 303                                                     (point)))))
 304                    command))))))
 305     (latexi-translate-string "$" "\\gnusdollar{}")
 306     (latexi-translate-string "&" "\\gnusampersand{}")
 307     (latexi-translate-string "%" "\\gnuspercent{}")
 308     (latexi-translate-string "#" "\\gnushash{}")
 309     (latexi-translate-string "^" "\\gnushat{}")
 310     (latexi-translate-string "~" "\\gnustilde{}")
 311     (latexi-translate-string "_" "\\gnusunderline{}")
 312     (latexi-translate-string "¬" "\\gnusnot{}")
 313     (goto-char (point-min))
 314     (while (search-forward "duppat{}" nil t)
 315       (replace-match "@" t t))
 316     (latexi-translate-string "@@" "@")
 317     (latexi-translate-string "<" "\\gnusless{}")
 318     (latexi-translate-string ">" "\\gnusgreater{}")
 319     (goto-char (point-min))
 320     (search-forward "label{Top}" nil t)
 321     (while (re-search-forward "\\\\[ntr]\\b" nil t)
 322       (when (save-match-data
 323               (or (not (save-excursion
 324                          (search-backward "begin{verbatim}" nil t)))
 325                   (> (save-excursion
 326                        (search-backward "end{verbatim"))
 327                      (save-excursion
 328                        (search-backward "begin{verbatim}")))))
 329         (goto-char (match-beginning 0))
 330         (delete-char 1)
 331         (insert "\\gnusbackslash{}")))
 332     (latexi-translate-string "\\\\" "\\gnusbackslash{}")
 333     (goto-char (point-min))
 334     (while (re-search-forward "\\\\[][{}]" nil t)
 335       (goto-char (match-beginning 0))
 336       (delete-char 1))
 337     (latexi-contributors)
 338     (let ((coding-system-for-write 'iso-8859-1))
 339       (write-region (point-min) (point-max) (concat file ".latexi")))))
 340
 341 (defun latexi-translate-string (in out)
 342   (let (yes)
 343     (goto-char (point-min))
 344     (search-forward "label{Top}" nil t)
 345     (while (search-forward in nil t)
 346       (when (save-match-data
 347               (or (not (save-excursion
 348                          (search-backward "begin{verbatim}" nil t)))
 349                   (> (save-excursion
 350                        (re-search-backward "end{verbatim}\\|end{verse}"))
 351                      (save-excursion
 352                        (re-search-backward
 353                         "begin{verbatim}\\|begin{verse}")))))
 354         (replace-match out t t)))))
 355
 356 (defun latexi-contributors ()
 357   (goto-char (point-min))
 358   (when (re-search-forward "^Also thanks to the following" nil t)
 359     (forward-line 2)
 360     (narrow-to-region
 361      (point)
 362      (1- (search-forward "\n\n")))
 363     (when (re-search-backward "^and" nil t)
 364       (latexi-strip-line))
 365     (goto-char (point-min))
 366     (while (re-search-forward "[.,] *$" nil t)
 367       (replace-match "" t t))
 368     (goto-char (point-min))
 369     (let (names)
 370       (while (not (eobp))
 371         (push (buffer-substring (point) (progn (end-of-line) (point)))
 372               names)
 373         (forward-line 1))
 374       (delete-region (point-min) (point-max))
 375       (insert "\\begin{tabular}{lll}\n")
 376       (setq names (nreverse (delete "" names)))
 377       (while names
 378         (insert (pop names) " & " (or (pop names) "\\mbox{}")
 379                 " & " (or (pop names) "\\mbox{}")
 380                 "\\\\\n"))
 381       (insert "\\end{tabular}\n")
 382       (widen))))
 383