lisp/obsolete/scribe.el

   1 ;;; scribe.el --- scribe mode, and its idiosyncratic commands
   2
   3 ;; Copyright (C) 1985, 2001-2011  Free Software Foundation, Inc.
   4
   5 ;; Author: William Sommerfeld
   6 ;; (according to ack.texi)
   7 ;; Maintainer: FSF
   8 ;; Keywords: wp
   9 ;; Obsolete-since: 22.1
  10
  11 ;; This file is part of GNU Emacs.
  12
  13 ;; GNU Emacs is free software: you can redistribute it and/or modify
  14 ;; it under the terms of the GNU General Public License as published by
  15 ;; the Free Software Foundation, either version 3 of the License, or
  16 ;; (at your option) any later version.
  17
  18 ;; GNU Emacs is distributed in the hope that it will be useful,
  19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ;; GNU General Public License for more details.
  22
  23 ;; You should have received a copy of the GNU General Public License
  24 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  25
  26 ;;; Commentary:
  27
  28 ;; A major mode for editing source in written for the Scribe text formatter.
  29 ;; Knows about Scribe syntax and standard layout rules.  The command to
  30 ;; run Scribe on a buffer is bogus; someone interested should fix it.
  31
  32 ;;; Code:
  33
  34 (defvar compile-command)
  35
  36 (defgroup scribe nil
  37   "Scribe mode."
  38   :prefix "scribe-"
  39   :group 'wp)
  40
  41 (defvar scribe-mode-syntax-table nil
  42   "Syntax table used while in scribe mode.")
  43
  44 (defvar scribe-mode-abbrev-table nil
  45   "Abbrev table used while in scribe mode.")
  46
  47 (defcustom scribe-fancy-paragraphs nil
  48   "*Non-nil makes Scribe mode use a different style of paragraph separation."
  49   :type 'boolean
  50   :group 'scribe)
  51
  52 (defcustom scribe-electric-quote nil
  53   "*Non-nil makes insert of double quote use `` or '' depending on context."
  54   :type 'boolean
  55   :group 'scribe)
  56
  57 (defcustom scribe-electric-parenthesis nil
  58   "*Non-nil makes parenthesis char ( (]}> ) automatically insert its close
  59 if typed after an @Command form."
  60   :type 'boolean
  61   :group 'scribe)
  62
  63 (defconst scribe-open-parentheses "[({<"
  64   "Open parenthesis characters for Scribe.")
  65
  66 (defconst scribe-close-parentheses "])}>"
  67   "Close parenthesis characters for Scribe.
  68 These should match up with `scribe-open-parenthesis'.")
  69
  70 (if (null scribe-mode-syntax-table)
  71     (let ((st (syntax-table)))
  72       (unwind-protect
  73        (progn
  74         (setq scribe-mode-syntax-table (copy-syntax-table
  75                                         text-mode-syntax-table))
  76         (set-syntax-table scribe-mode-syntax-table)
  77         (modify-syntax-entry ?\" "    ")
  78         (modify-syntax-entry ?\\ "    ")
  79         (modify-syntax-entry ?@ "w   ")
  80         (modify-syntax-entry ?< "(>  ")
  81         (modify-syntax-entry ?> ")<  ")
  82         (modify-syntax-entry ?[ "(]  ")
  83         (modify-syntax-entry ?] ")[  ")
  84         (modify-syntax-entry ?{ "(}  ")
  85         (modify-syntax-entry ?} "){  ")
  86         (modify-syntax-entry ?' "w   "))
  87        (set-syntax-table st))))
  88
  89 (defvar scribe-mode-map nil)
  90
  91 (if scribe-mode-map
  92     nil
  93   (setq scribe-mode-map (make-sparse-keymap))
  94   (define-key scribe-mode-map "\t" 'scribe-tab)
  95   (define-key scribe-mode-map "\e\t" 'tab-to-tab-stop)
  96   (define-key scribe-mode-map "\es" 'center-line)
  97   (define-key scribe-mode-map "\e}" 'up-list)
  98   (define-key scribe-mode-map "\eS" 'center-paragraph)
  99   (define-key scribe-mode-map "\"" 'scribe-insert-quote)
 100   (define-key scribe-mode-map "(" 'scribe-parenthesis)
 101   (define-key scribe-mode-map "[" 'scribe-parenthesis)
 102   (define-key scribe-mode-map "{" 'scribe-parenthesis)
 103   (define-key scribe-mode-map "<" 'scribe-parenthesis)
 104   (define-key scribe-mode-map "\C-c\C-c" 'scribe-chapter)
 105   (define-key scribe-mode-map "\C-c\C-t" 'scribe-section)
 106   (define-key scribe-mode-map "\C-c\C-s" 'scribe-subsection)
 107   (define-key scribe-mode-map "\C-c\C-v" 'scribe-insert-environment)
 108   (define-key scribe-mode-map "\C-c\C-e" 'scribe-bracket-region-be)
 109   (define-key scribe-mode-map "\C-c[" 'scribe-begin)
 110   (define-key scribe-mode-map "\C-c]" 'scribe-end)
 111   (define-key scribe-mode-map "\C-c\C-i" 'scribe-italicize-word)
 112   (define-key scribe-mode-map "\C-c\C-b" 'scribe-bold-word)
 113   (define-key scribe-mode-map "\C-c\C-u" 'scribe-underline-word))
 114
 115 ;;;###autoload
 116 (define-derived-mode scribe-mode text-mode "Scribe"
 117   "Major mode for editing files of Scribe (a text formatter) source.
 118 Scribe-mode is similar to text-mode, with a few extra commands added.
 119 \\{scribe-mode-map}
 120
 121 Interesting variables:
 122
 123 `scribe-fancy-paragraphs'
 124   Non-nil makes Scribe mode use a different style of paragraph separation.
 125
 126 `scribe-electric-quote'
 127   Non-nil makes insert of double quote use `` or '' depending on context.
 128
 129 `scribe-electric-parenthesis'
 130   Non-nil makes an open-parenthesis char (one of `([<{')
 131   automatically insert its close if typed after an @Command form."
 132   (set (make-local-variable 'comment-start) "@Comment[")
 133   (set (make-local-variable 'comment-start-skip) (concat "@Comment[" scribe-open-parentheses "]"))
 134   (set (make-local-variable 'comment-column) 0)
 135   (set (make-local-variable 'comment-end) "]")
 136   (set (make-local-variable 'paragraph-start)
 137        (concat "\\([\n\f]\\)\\|\\(@\\w+["
 138                scribe-open-parentheses
 139                "].*["
 140                scribe-close-parentheses
 141                "]$\\)"))
 142   (set (make-local-variable 'paragraph-separate)
 143        (if scribe-fancy-paragraphs paragraph-start "$"))
 144   (set (make-local-variable 'sentence-end)
 145        "\\([.?!]\\|@:\\)[]\"')}]*\\($\\| $\\|\t\\|  \\)[ \t\n]*")
 146   (set (make-local-variable 'compile-command)
 147        (concat "scribe " (buffer-file-name))))
 148
 149 (defun scribe-tab ()
 150   (interactive)
 151   (insert "@\\"))
 152
 153 ;; This algorithm could probably be improved somewhat.
 154 ;;  Right now, it loses seriously...
 155
 156 (defun scribe ()
 157   "Run Scribe on the current buffer."
 158   (interactive)
 159   (call-interactively 'compile))
 160
 161 (defun scribe-envelop-word (string count)
 162   "Surround current word with Scribe construct @STRING[...].
 163 COUNT specifies how many words to surround.  A negative count means
 164 to skip backward."
 165   (let ((spos (point)) (epos (point)) (ccoun 0) noparens)
 166     (if (not (zerop count))
 167         (progn (if (= (char-syntax (preceding-char)) ?w)
 168                    (forward-sexp (min -1 count)))
 169                (setq spos (point))
 170                (if (looking-at (concat "@\\w[" scribe-open-parentheses "]"))
 171                    (forward-char 2)
 172                  (goto-char epos)
 173                  (skip-chars-backward "\\W")
 174                  (forward-char -1))
 175                (forward-sexp (max count 1))
 176                (setq epos (point))))
 177     (goto-char spos)
 178     (while (and (< ccoun (length scribe-open-parentheses))
 179                 (save-excursion
 180                   (or (search-forward (char-to-string
 181                                        (aref scribe-open-parentheses ccoun))
 182                                       epos t)
 183                       (search-forward (char-to-string
 184                                        (aref scribe-close-parentheses ccoun))
 185                                       epos t)))
 186                 (setq ccoun (1+ ccoun))))
 187     (if (>= ccoun (length scribe-open-parentheses))
 188         (progn (goto-char epos)
 189                (insert "@end(" string ")")
 190                (goto-char spos)
 191                (insert "@begin(" string ")"))
 192       (goto-char epos)
 193       (insert (aref scribe-close-parentheses ccoun))
 194       (goto-char spos)
 195       (insert "@" string (aref scribe-open-parentheses ccoun))
 196       (goto-char epos)
 197       (forward-char 3)
 198       (skip-chars-forward scribe-close-parentheses))))
 199
 200 (defun scribe-underline-word (count)
 201   "Underline COUNT words around point by means of Scribe constructs."
 202   (interactive "p")
 203   (scribe-envelop-word "u" count))
 204
 205 (defun scribe-bold-word (count)
 206   "Boldface COUNT words around point by means of Scribe constructs."
 207   (interactive "p")
 208   (scribe-envelop-word "b" count))
 209
 210 (defun scribe-italicize-word (count)
 211   "Italicize COUNT words around point by means of Scribe constructs."
 212   (interactive "p")
 213   (scribe-envelop-word "i" count))
 214
 215 (defun scribe-begin ()
 216   (interactive)
 217   (insert "\n")
 218   (forward-char -1)
 219   (scribe-envelop-word "Begin" 0)
 220   (re-search-forward (concat "[" scribe-open-parentheses "]")))
 221
 222 (defun scribe-end ()
 223   (interactive)
 224   (insert "\n")
 225   (forward-char -1)
 226   (scribe-envelop-word "End" 0)
 227   (re-search-forward (concat "[" scribe-open-parentheses "]")))
 228
 229 (defun scribe-chapter ()
 230   (interactive)
 231   (insert "\n")
 232   (forward-char -1)
 233   (scribe-envelop-word "Chapter" 0)
 234   (re-search-forward (concat "[" scribe-open-parentheses "]")))
 235
 236 (defun scribe-section ()
 237   (interactive)
 238   (insert "\n")
 239   (forward-char -1)
 240   (scribe-envelop-word "Section" 0)
 241   (re-search-forward (concat "[" scribe-open-parentheses "]")))
 242
 243 (defun scribe-subsection ()
 244   (interactive)
 245   (insert "\n")
 246   (forward-char -1)
 247   (scribe-envelop-word "SubSection" 0)
 248   (re-search-forward (concat "[" scribe-open-parentheses "]")))
 249
 250 (defun scribe-bracket-region-be (env min max)
 251   (interactive "sEnvironment: \nr")
 252   (save-excursion
 253     (goto-char max)
 254     (insert "@end(" env ")\n")
 255     (goto-char min)
 256     (insert "@begin(" env ")\n")))
 257
 258 (defun scribe-insert-environment (env)
 259   (interactive "sEnvironment: ")
 260   (scribe-bracket-region-be env (point) (point))
 261   (forward-line 1)
 262   (insert ?\n)
 263   (forward-char -1))
 264
 265 (defun scribe-insert-quote (count)
 266   "Insert ``, '' or \" according to preceding character.
 267 If `scribe-electric-quote' is non-nil, insert ``, '' or \" according
 268 to preceding character.  With numeric arg N, always insert N \" characters.
 269 Else just insert \"."
 270   (interactive "P")
 271   (if (or count (not scribe-electric-quote))
 272       (self-insert-command (prefix-numeric-value count))
 273     (let (lastfore lastback lastquote)
 274       (insert
 275        (cond
 276         ((= (preceding-char) ?\\) ?\")
 277         ((bobp) "``")
 278         (t
 279          (setq lastfore (save-excursion (and (search-backward
 280                                               "``" (- (point) 1000) t)
 281                                              (point)))
 282                lastback (save-excursion (and (search-backward
 283                                               "''" (- (point) 1000) t)
 284                                              (point)))
 285                lastquote (save-excursion (and (search-backward
 286                                                "\"" (- (point) 100) t)
 287                                               (point))))
 288          (if (not lastquote)
 289              (cond ((not lastfore) "``")
 290                    ((not lastback) "''")
 291                    ((> lastfore lastback) "''")
 292                    (t "``"))
 293            (cond ((and (not lastback) (not lastfore)) "\"")
 294                  ((and lastback (not lastfore) (> lastquote lastback)) "\"")
 295                  ((and lastback (not lastfore) (> lastback lastquote)) "``")
 296                  ((and lastfore (not lastback) (> lastquote lastfore)) "\"")
 297                  ((and lastfore (not lastback) (> lastfore lastquote)) "''")
 298                  ((and (> lastquote lastfore) (> lastquote lastback)) "\"")
 299                  ((> lastfore lastback) "''")
 300                  (t "``")))))))))
 301
 302 (defun scribe-parenthesis (count)
 303   "If scribe-electric-parenthesis is non-nil, insertion of an open-parenthesis
 304 character inserts the following close parenthesis character if the
 305 preceding text is of the form @Command."
 306   (interactive "P")
 307   (self-insert-command (prefix-numeric-value count))
 308   (let (at-command paren-char point-save)
 309     (if (or count (not scribe-electric-parenthesis))
 310         nil
 311       (save-excursion
 312         (forward-char -1)
 313         (setq point-save (point))
 314         (skip-chars-backward (concat "^ \n\t\f" scribe-open-parentheses))
 315         (setq at-command (and (equal (following-char) ?@)
 316                               (/= (point) (1- point-save)))))
 317       (if (and at-command
 318                (setq paren-char
 319                      (string-match (regexp-quote
 320                                     (char-to-string (preceding-char)))
 321                                    scribe-open-parentheses)))
 322           (save-excursion
 323             (insert (aref scribe-close-parentheses paren-char)))))))
 324
 325 (provide 'scribe)
 326
 327 ;;; scribe.el ends here