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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" "syncodeindex"))
 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                ((equal command ":")
 147                 (replace-match "" t t))
 148                ((member command '("deffn" "defvar" "defun"))
 149                 (replace-match "" t t))
 150                ((equal command "node")
 151                 (latexi-strip-line)
 152                 (unless (string-match "Index" arg)
 153                   (insert (format "\\label{%s}\n" arg))))
 154                ((equal command "contents")
 155                 (latexi-strip-line)
 156                 ;;(insert (format "\\tableofcontents\n" arg))
 157                 )
 158                ((member command '("titlepage"))
 159                 (latexi-begin-command command))
 160                ((member command '("lisp" "example" "smallexample" "display"))
 161                 (latexi-strip-line)
 162                 (insert (format "\\begin{verbatim}\n"))
 163                 (setq verbatim (point)))
 164                ((member command '("center"))
 165                 (latexi-strip-line)
 166                 (insert (format "\\begin{%s}%s\\end{%s}\n"
 167                                 command arg command)))
 168                ((member command '("end"))
 169                 (cond
 170                  ((member arg '("titlepage"))
 171                   (latexi-strip-line)
 172                   (insert (format "\\end{%s}\n" arg)))
 173                  ((equal arg "quotation")
 174                   (latexi-strip-line)
 175                   (insert (format "\\end{verse}\n")))
 176                  ((member arg '("lisp" "example" "smallexample" "display"))
 177                   (latexi-strip-line)
 178                   (save-excursion
 179                     (save-restriction
 180                       (narrow-to-region verbatim (point))
 181                       (goto-char (point-min))
 182                       (while (search-forward "@{" nil t)
 183                         (replace-match "{" t t))
 184                       (goto-char (point-min))
 185                       (while (search-forward "@}" nil t)
 186                         (replace-match "}" t t))))
 187                   (setq verbatim nil)
 188                   (insert "\\end{verbatim}\n"))
 189                  ((member arg '("table"))
 190                   (setq item-string (pop item-stack))
 191                   (latexi-strip-line)
 192                   (insert (format "\\end{%slist}\n" (pop list-stack))))
 193                  ((member arg '("itemize" "enumerate"))
 194                   (setq item-string (pop item-stack))
 195                   (latexi-strip-line)
 196                   (insert (format "\\end{%s}\n" arg)))
 197                  ((member arg '("iflatex" "iftex" "cartouche" "group"))
 198                   (latexi-strip-line))
 199                  ((member arg '("deffn" "defvar" "defun"))
 200                   (latexi-strip-line))
 201                  (t
 202                   (error "Unknown end arg: %s" arg))))
 203                ((member command '("table"))
 204                 (push item-string item-stack)
 205                 (push (substring arg 1) list-stack)
 206                 (setq item-string
 207                       (format "[@%s{%%s}]" (car list-stack)))
 208                 (latexi-strip-line)
 209                 (insert (format "\\begin{%slist}\n" (car list-stack))))
 210                ((member command '("itemize" "enumerate"))
 211                 (push item-string item-stack)
 212                 (cond
 213                  ((member arg '("@bullet"))
 214                   (setq item-string "[\\gnusbullet]"))
 215                  (t
 216                   (setq item-string "")))
 217                 (latexi-strip-line)
 218                 (insert (format "\\begin{%s}\n" command)))
 219                ((member command '("item"))
 220                 (latexi-strip-line)
 221                 (insert (format "\\%s%s\n" command (format item-string arg))))
 222                ((equal command "itemx")
 223                 (latexi-strip-line)
 224                 (insert (format "\\gnusitemx{%s}\n" (format item-string arg))))
 225                ((eq (aref command 0) ?@)
 226                 (goto-char (match-beginning 0))
 227                 (delete-char 2)
 228                 (insert "duppat{}"))
 229                ((equal command "settitle")
 230                 (latexi-strip-line)
 231                 (if (not as-a-chapter)
 232                     (insert
 233                      (format "\\newcommand{\\gnustitlename}{%s}\n" arg))))
 234                ((equal command "title")
 235                 (latexi-strip-line)
 236                 (insert (format "\\gnustitlename{%s}\n" arg)))
 237                ((equal command "author")
 238                 (latexi-strip-line)
 239                 (insert (format "\\gnusauthor{%s}\n" arg)))
 240                ((equal command "quotation")
 241                 (latexi-begin-command "verse"))
 242                ((equal command "page")
 243                 (latexi-strip-line)
 244                 (insert (format "\\newpage\n" arg)))
 245                ((equal command "'s")
 246                 (goto-char (match-beginning 0))
 247                 (delete-char 1))
 248                ((equal command "include")
 249                 (latexi-strip-line)
 250                 (string-match "\\.texi" arg)
 251                 (insert (format "\\input{%s.latexi}\n"
 252                                 (substring arg 0 (match-beginning 0)))))
 253                ((equal command "noindent")
 254                 (latexi-strip-line)
 255                 (insert "\\noindent\n"))
 256                ((equal command "printindex")
 257                 (latexi-strip-line)
 258                 ;;(insert
 259                 ;; (format
 260                 ;;  "\\begin{theindex}\\input{gnus.%s}\\end{theindex}\n" arg))
 261                 )
 262                (t
 263                 (error "Unknown command (file %s line %d): %s"
 264                        file
 265                        (save-excursion
 266                          (widen)
 267                          (1+ (count-lines (point-min) (progn
 268                                                         (beginning-of-line)
 269                                                         (point)))))
 270                        command))))
 271           ;; These are commands with {}.
 272           (setq arg (match-string 5))
 273           (cond
 274            ((member command '("anchor"))
 275             (latexi-strip-line))
 276            ((member command '("ref" "xref" "pxref"))
 277             (latexi-exchange-command (concat "gnus" command) arg))
 278            ((member command '("sc" "file" "dfn" "emph" "kbd" "key" "uref"
 279                               "code" "samp" "var" "strong" "i"
 280                               "result" "email" "env" "r" "command"))
 281             (goto-char (match-beginning 0))
 282             (delete-char 1)
 283             (insert "\\gnus"))
 284            ((member command '("acronym"))
 285             (latexi-exchange-command (concat "gnus" command) (downcase arg)))
 286            ((member command '("copyright" "footnote" "TeX"))
 287             (goto-char (match-beginning 0))
 288             (delete-char 1)
 289             (insert "\\"))
 290            ((member command '("dots"))
 291             (goto-char (match-beginning 0))
 292             (delete-region (match-beginning 0) (match-end 0))
 293             (insert "..."))
 294            ((eq (aref command 0) ?@)
 295             (goto-char (match-beginning 0))
 296             (delete-char 2)
 297             (insert "duppat{}"))
 298            (t
 299             (error "Unknown command (file %s line %d): %s"
 300                    file
 301                    (save-excursion
 302                      (widen)
 303                      (1+ (count-lines (point-min) (progn
 304                                                     (beginning-of-line)
 305                                                     (point)))))
 306                    command))))))
 307     (latexi-translate-string "$" "\\gnusdollar{}")
 308     (latexi-translate-string "&" "\\gnusampersand{}")
 309     (latexi-translate-string "%" "\\gnuspercent{}")
 310     (latexi-translate-string "#" "\\gnushash{}")
 311     (latexi-translate-string "^" "\\gnushat{}")
 312     (latexi-translate-string "~" "\\gnustilde{}")
 313     (latexi-translate-string "_" "\\gnusunderline{}")
 314     (latexi-translate-string "¬" "\\gnusnot{}")
 315     (goto-char (point-min))
 316     (while (search-forward "duppat{}" nil t)
 317       (replace-match "@" t t))
 318     (latexi-translate-string "@@" "@")
 319     (latexi-translate-string "<" "\\gnusless{}")
 320     (latexi-translate-string ">" "\\gnusgreater{}")
 321     (goto-char (point-min))
 322     (search-forward "label{Top}" nil t)
 323     (while (re-search-forward "\\\\[ntr]\\b" nil t)
 324       (when (save-match-data
 325               (or (not (save-excursion
 326                          (search-backward "begin{verbatim}" nil t)))
 327                   (> (save-excursion
 328                        (search-backward "end{verbatim"))
 329                      (save-excursion
 330                        (search-backward "begin{verbatim}")))))
 331         (goto-char (match-beginning 0))
 332         (delete-char 1)
 333         (insert "\\gnusbackslash{}")))
 334     (latexi-translate-string "\\\\" "\\gnusbackslash{}")
 335     (goto-char (point-min))
 336     (while (re-search-forward "\\\\[][{}]" nil t)
 337       (goto-char (match-beginning 0))
 338       (delete-char 1))
 339     (latexi-contributors)
 340     (let ((coding-system-for-write 'iso-8859-1))
 341       (write-region (point-min) (point-max) (concat file ".latexi")))))
 342
 343 (defun latexi-translate-string (in out)
 344   (let (yes)
 345     (goto-char (point-min))
 346     (search-forward "label{Top}" nil t)
 347     (while (search-forward in nil t)
 348       (when (save-match-data
 349               (or (not (save-excursion
 350                          (search-backward "begin{verbatim}" nil t)))
 351                   (> (save-excursion
 352                        (re-search-backward "end{verbatim}\\|end{verse}"))
 353                      (save-excursion
 354                        (re-search-backward
 355                         "begin{verbatim}\\|begin{verse}")))))
 356         (replace-match out t t)))))
 357
 358 (defun latexi-contributors ()
 359   (goto-char (point-min))
 360   (when (re-search-forward "^Also thanks to the following" nil t)
 361     (forward-line 2)
 362     (narrow-to-region
 363      (point)
 364      (1- (search-forward "\n\n")))
 365     (when (re-search-backward "^and" nil t)
 366       (latexi-strip-line))
 367     (goto-char (point-min))
 368     (while (re-search-forward "[.,] *$" nil t)
 369       (replace-match "" t t))
 370     (goto-char (point-min))
 371     (let (names)
 372       (while (not (eobp))
 373         (push (buffer-substring (point) (progn (end-of-line) (point)))
 374               names)
 375         (forward-line 1))
 376       (delete-region (point-min) (point-max))
 377       (insert "\\begin{tabular}{lll}\n")
 378       (setq names (nreverse (delete "" names)))
 379       (while names
 380         (insert (pop names) " & " (or (pop names) "\\mbox{}")
 381                 " & " (or (pop names) "\\mbox{}")
 382                 "\\\\\n"))
 383       (insert "\\end{tabular}\n")
 384       (widen))))
 385