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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   (latexi-translate-file "pgg" t))
  43
  44 (defun latexi-translate-file (file &optional as-a-chapter)
  45   "Translate file a LaTeX file."
  46   (let ((item-string "")
  47         (item-stack nil)
  48         (list-stack nil)
  49         (latexi-buffer (get-buffer-create "*LaTeXi*"))
  50         verbatim
  51         (regexp
  52          (concat
  53             "@\\([^{} \t\n]+\\)"
  54             "\\(\\( +\\(.*$\\)\\|[ \t]*$\\)\\|{\\([^}]*\\)}\\)"))
  55         (cur (find-file-noselect (concat (or (getenv "srcdir") ".")
  56                                          "/" file ".texi")))
  57         (times 3)
  58         (chapter 0)
  59         command arg)
  60     (pop-to-buffer latexi-buffer)
  61     (buffer-disable-undo)
  62     (erase-buffer)
  63     (insert-buffer-substring cur)
  64     (goto-char (point-min))
  65     (latexi-strip-line)
  66     (latexi-translate-string "%@{" "\\gnuspercent{}\\gnusbraceleft{}")
  67     (latexi-translate-string "%@}" "\\gnuspercent{}\\gnusbraceright{}")
  68     (latexi-translate-string "%1@{" "\\gnuspercent{}1\\gnusbraceright{}")
  69     (latexi-translate-string "@*" "\\newline{}")
  70     (latexi-translate-string "S@{" "S\\gnusbraceleft{}")
  71     (latexi-translate-string "@code{\\222}" "@code{\\gnusbackslash{}222}")
  72     (latexi-translate-string "@code{\\264}" "@code{\\gnusbackslash{}264}")
  73     (latexi-translate-string "@samp{\\Deleted}" "@samp{\\gnusbackslash{}Deleted}")
  74     (latexi-translate-string "@samp{\\Seen}" "@samp{\\gnusbackslash{}Seen}")
  75     (latexi-translate-string "@file{c:\\myhome}" "@file{c:\\gnusbackslash{}myhome}")
  76 ;    (while (re-search-forward "{\"[^\"]*\\(\\\\\\)[^\"]*\"}\\\\" nil t)
  77 ;      (replace-match "\\verb+\\\\+ " t t))
  78     (while (not (zerop (decf times)))
  79       (goto-char (point-min))
  80       (while (re-search-forward regexp nil t)
  81         (setq command (match-string 1))
  82         (if (match-beginning 3)
  83             (progn
  84               (setq arg (or (match-string 4) ""))
  85               (save-match-data
  86                 (when (string-match "[ \t]+$" arg)
  87                   (setq arg (substring arg 0 (match-beginning 0)))))
  88               (cond
  89                ((member command '("c" "comment"))
  90                 (if (string-match "@icon" (or arg ""))
  91                     (progn
  92                       (beginning-of-line)
  93                       (delete-region (point) (+ (point) 4))
  94                       (insert "\\gnus"))
  95                   (delete-region (match-beginning 0)
  96                                  (progn (end-of-line) (point))))
  97                 (if (equal arg "@head")
  98                     (insert "\\gnusinteresting")))
  99                ((member command '("setfilename" "set"
 100                                   "synindex" "setchapternewpage"
 101                                   "summarycontents" "bye"
 102                                   "top" "iftex" "cartouche"
 103                                   "iflatex" "finalout" "vskip"
 104                                   "dircategory" "group" "syncodeindex"))
 105                 (latexi-strip-line))
 106                ((member command '("menu" "tex" "ifinfo" "ignore"
 107                                   "ifnottex" "direntry"))
 108                 (latexi-discard-until command))
 109                ((member command '("subsection" "subsubsection"))
 110                 (if as-a-chapter
 111                     (latexi-switch-line (format "sub%s" command) arg)
 112                   (latexi-switch-line command arg)))
 113                ((member command '("heading"))
 114                 (if as-a-chapter
 115                     (latexi-switch-line "subsection*" arg)
 116                   (latexi-switch-line "section*" arg)))
 117                ((member command '("subheading"))
 118                 (if as-a-chapter
 119                     (latexi-switch-line "subsubsection*" arg)
 120                   (latexi-switch-line "subsection*" arg)))
 121                ((member command '("subsubheading"))
 122                 (if as-a-chapter
 123                     (latexi-switch-line "subsubsubsection*" arg)
 124                   (latexi-switch-line "subsubsection*" arg)))
 125                ((member command '("chapter"))
 126                 (if (string-match "Index" arg)
 127                     (latexi-strip-line)
 128                   (if as-a-chapter
 129                       (latexi-switch-line "gnussection" arg)
 130                     (latexi-switch-line
 131                      (format
 132                       "gnus%s{%s}" command
 133                       (format "\\epsfig{figure=ps/new-herd-%d,scale=.5}"
 134                               (if (> (incf chapter) 9) 9 chapter)))
 135                      arg))))
 136                ((member command '("section"))
 137                 (if as-a-chapter
 138                     (latexi-switch-line "subsection" arg)
 139                   (latexi-switch-line (format "gnus%s" command) arg)))
 140                ((member command '("cindex" "findex" "kindex" "vindex"))
 141                 (latexi-index-command command arg))
 142                ((member command '("*"))
 143                 (delete-char -2)
 144                 (insert "\\\\"))
 145                ((equal command "sp")
 146                 (replace-match "" t t))
 147                ((member command '("deffn" "defvar" "defun"))
 148                 (replace-match "" t t))
 149                ((equal command "node")
 150                 (latexi-strip-line)
 151                 (unless (string-match "Index" arg)
 152                   (insert (format "\\label{%s}\n" arg))))
 153                ((equal command "contents")
 154                 (latexi-strip-line)
 155                 ;;(insert (format "\\tableofcontents\n" arg))
 156                 )
 157                ((member command '("titlepage"))
 158                 (latexi-begin-command command))
 159                ((member command '("lisp" "example" "smallexample" "display"))
 160                 (latexi-strip-line)
 161                 (insert (format "\\begin{verbatim}\n"))
 162                 (setq verbatim (point)))
 163                ((member command '("center"))
 164                 (latexi-strip-line)
 165                 (insert (format "\\begin{%s}%s\\end{%s}\n"
 166                                 command arg command)))
 167                ((member command '("end"))
 168                 (cond
 169                  ((member arg '("titlepage"))
 170                   (latexi-strip-line)
 171                   (insert (format "\\end{%s}\n" arg)))
 172                  ((equal arg "quotation")
 173                   (latexi-strip-line)
 174                   (insert (format "\\end{verse}\n")))
 175                  ((member arg '("lisp" "example" "smallexample" "display"))
 176                   (latexi-strip-line)
 177                   (save-excursion
 178                     (save-restriction
 179                       (narrow-to-region verbatim (point))
 180                       (goto-char (point-min))
 181                       (while (search-forward "@{" nil t)
 182                         (replace-match "{" t t))
 183                       (goto-char (point-min))
 184                       (while (search-forward "@}" nil t)
 185                         (replace-match "}" t t))))
 186                   (setq verbatim nil)
 187                   (insert "\\end{verbatim}\n"))
 188                  ((member arg '("table"))
 189                   (setq item-string (pop item-stack))
 190                   (latexi-strip-line)
 191                   (insert (format "\\end{%slist}\n" (pop list-stack))))
 192                  ((member arg '("itemize" "enumerate"))
 193                   (setq item-string (pop item-stack))
 194                   (latexi-strip-line)
 195                   (insert (format "\\end{%s}\n" arg)))
 196                  ((member arg '("iflatex" "iftex" "cartouche" "group"))
 197                   (latexi-strip-line))
 198                  ((member arg '("deffn" "defvar" "defun"))
 199                   (latexi-strip-line))
 200                  (t
 201                   (error "Unknown end arg: %s" arg))))
 202                ((member command '("table"))
 203                 (push item-string item-stack)
 204                 (push (substring arg 1) list-stack)
 205                 (setq item-string
 206                       (format "[@%s{%%s}]" (car list-stack)))
 207                 (latexi-strip-line)
 208                 (insert (format "\\begin{%slist}\n" (car list-stack))))
 209                ((member command '("itemize" "enumerate"))
 210                 (push item-string item-stack)
 211                 (cond
 212                  ((member arg '("@bullet"))
 213                   (setq item-string "[\\gnusbullet]"))
 214                  (t
 215                   (setq item-string "")))
 216                 (latexi-strip-line)
 217                 (insert (format "\\begin{%s}\n" command)))
 218                ((member command '("item"))
 219                 (latexi-strip-line)
 220                 (insert (format "\\%s%s\n" command (format item-string arg))))
 221                ((equal command "itemx")
 222                 (latexi-strip-line)
 223                 (insert (format "\\gnusitemx{%s}\n" (format item-string arg))))
 224                ((eq (aref command 0) ?@)
 225                 (goto-char (match-beginning 0))
 226                 (delete-char 2)
 227                 (insert "duppat{}"))
 228                ((equal command "settitle")
 229                 (latexi-strip-line)
 230                 (if (not as-a-chapter)
 231                     (insert
 232                      (format "\\newcommand{\\gnustitlename}{%s}\n" arg))))
 233                ((equal command "title")
 234                 (latexi-strip-line)
 235                 (insert (format "\\gnustitlename{%s}\n" arg)))
 236                ((equal command "author")
 237                 (latexi-strip-line)
 238                 (insert (format "\\gnusauthor{%s}\n" arg)))
 239                ((equal command "quotation")
 240                 (latexi-begin-command "verse"))
 241                ((equal command "page")
 242                 (latexi-strip-line)
 243                 (insert (format "\\newpage\n" arg)))
 244                ((equal command "'s")
 245                 (goto-char (match-beginning 0))
 246                 (delete-char 1))
 247                ((equal command "include")
 248                 (latexi-strip-line)
 249                 (string-match "\\.texi" arg)
 250                 (insert (format "\\input{%s.latexi}\n"
 251                                 (substring arg 0 (match-beginning 0)))))
 252                ((equal command "noindent")
 253                 (latexi-strip-line)
 254                 (insert "\\noindent\n"))
 255                ((equal command "printindex")
 256                 (latexi-strip-line)
 257                 ;;(insert
 258                 ;; (format
 259                 ;;  "\\begin{theindex}\\input{gnus.%s}\\end{theindex}\n" arg))
 260                 )
 261                (t
 262                 (error "Unknown command (file %s line %d): %s"
 263                        file
 264                        (save-excursion
 265                          (widen)
 266                          (1+ (count-lines (point-min) (progn
 267                                                         (beginning-of-line)
 268                                                         (point)))))
 269                        command))))
 270           ;; These are commands with {}.
 271           (setq arg (match-string 5))
 272           (cond
 273            ((member command '("anchor"))
 274             (latexi-strip-line))
 275            ((member command '("ref" "xref" "pxref"))
 276             (latexi-exchange-command (concat "gnus" command) arg))
 277            ((member command '("sc" "file" "dfn" "emph" "kbd" "key" "uref"
 278                               "code" "samp" "var" "strong" "i"
 279                               "result" "email" "env" "r"))
 280             (goto-char (match-beginning 0))
 281             (delete-char 1)
 282             (insert "\\gnus"))
 283            ((member command '("acronym"))
 284             (latexi-exchange-command (concat "gnus" command) (downcase arg)))
 285            ((member command '("copyright" "footnote" "TeX"))
 286             (goto-char (match-beginning 0))
 287             (delete-char 1)
 288             (insert "\\"))
 289            ((member command '("dots"))
 290             (goto-char (match-beginning 0))
 291             (delete-region (match-beginning 0) (match-end 0))
 292             (insert "..."))
 293            ((eq (aref command 0) ?@)
 294             (goto-char (match-beginning 0))
 295             (delete-char 2)
 296             (insert "duppat{}"))
 297            (t
 298             (error "Unknown command (file %s line %d): %s"
 299                    file
 300                    (save-excursion
 301                      (widen)
 302                      (1+ (count-lines (point-min) (progn
 303                                                     (beginning-of-line)
 304                                                     (point)))))
 305                    command))))))
 306     (latexi-translate-string "$" "\\gnusdollar{}")
 307     (latexi-translate-string "&" "\\gnusampersand{}")
 308     (latexi-translate-string "%" "\\gnuspercent{}")
 309     (latexi-translate-string "#" "\\gnushash{}")
 310     (latexi-translate-string "^" "\\gnushat{}")
 311     (latexi-translate-string "~" "\\gnustilde{}")
 312     (latexi-translate-string "_" "\\gnusunderline{}")
 313     (latexi-translate-string "¬" "\\gnusnot{}")
 314     (goto-char (point-min))
 315     (while (search-forward "duppat{}" nil t)
 316       (replace-match "@" t t))
 317     (latexi-translate-string "@@" "@")
 318     (latexi-translate-string "<" "\\gnusless{}")
 319     (latexi-translate-string ">" "\\gnusgreater{}")
 320     (goto-char (point-min))
 321     (search-forward "label{Top}" nil t)
 322     (while (re-search-forward "\\\\[ntr]\\b" nil t)
 323       (when (save-match-data
 324               (or (not (save-excursion
 325                          (search-backward "begin{verbatim}" nil t)))
 326                   (> (save-excursion
 327                        (search-backward "end{verbatim"))
 328                      (save-excursion
 329                        (search-backward "begin{verbatim}")))))
 330         (goto-char (match-beginning 0))
 331         (delete-char 1)
 332         (insert "\\gnusbackslash{}")))
 333     (latexi-translate-string "\\\\" "\\gnusbackslash{}")
 334     (goto-char (point-min))
 335     (while (re-search-forward "\\\\[][{}]" nil t)
 336       (goto-char (match-beginning 0))
 337       (delete-char 1))
 338     (latexi-contributors)
 339     (let ((coding-system-for-write 'iso-8859-1))
 340       (write-region (point-min) (point-max) (concat file ".latexi")))))
 341
 342 (defun latexi-translate-string (in out)
 343   (let (yes)
 344     (goto-char (point-min))
 345     (search-forward "label{Top}" nil t)
 346     (while (search-forward in nil t)
 347       (when (save-match-data
 348               (or (not (save-excursion
 349                          (search-backward "begin{verbatim}" nil t)))
 350                   (> (save-excursion
 351                        (re-search-backward "end{verbatim}\\|end{verse}"))
 352                      (save-excursion
 353                        (re-search-backward
 354                         "begin{verbatim}\\|begin{verse}")))))
 355         (replace-match out t t)))))
 356
 357 (defun latexi-contributors ()
 358   (goto-char (point-min))
 359   (when (re-search-forward "^Also thanks to the following" nil t)
 360     (forward-line 2)
 361     (narrow-to-region
 362      (point)
 363      (1- (search-forward "\n\n")))
 364     (when (re-search-backward "^and" nil t)
 365       (latexi-strip-line))
 366     (goto-char (point-min))
 367     (while (re-search-forward "[.,] *$" nil t)
 368       (replace-match "" t t))
 369     (goto-char (point-min))
 370     (let (names)
 371       (while (not (eobp))
 372         (push (buffer-substring (point) (progn (end-of-line) (point)))
 373               names)
 374         (forward-line 1))
 375       (delete-region (point-min) (point-max))
 376       (insert "\\begin{tabular}{lll}\n")
 377       (setq names (nreverse (delete "" names)))
 378       (while names
 379         (insert (pop names) " & " (or (pop names) "\\mbox{}")
 380                 " & " (or (pop names) "\\mbox{}")
 381                 "\\\\\n"))
 382       (insert "\\end{tabular}\n")
 383       (widen))))
 384