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323 lines
11 KiB
EmacsLisp
323 lines
11 KiB
EmacsLisp
;;; scribe.el --- scribe mode, and its idiosyncratic commands.
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;; Copyright (C) 1985 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; Keywords: wp
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;; This file might become part of GNU Emacs.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but without any warranty. No author or distributor
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;; accepts responsibility to anyone for the consequences of using it
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;; or for whether it serves any particular purpose or works at all,
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;; unless he says so in writing.
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;; Everyone is granted permission to copy, modify and redistribute
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;; GNU Emacs, but only under the conditions described in the
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;; document "GNU Emacs copying permission notice". An exact copy
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;; of the document is supposed to have been given to you along with
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;; GNU Emacs so that you can know how you may redistribute it all.
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;; It should be in a file named COPYING. Among other things, the
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;; copyright notice and this notice must be preserved on all copies.
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;;; Commentary:
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;; A major mode for editing source in written for the Scribe text formatter.
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;; Knows about Scribe syntax and standard layout rules. The command to
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;; run Scribe on a buffer is bogus; someone interested should fix it.
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;;; Code:
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(defvar scribe-mode-syntax-table nil
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"Syntax table used while in scribe mode.")
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(defvar scribe-mode-abbrev-table nil
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"Abbrev table used while in scribe mode.")
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(defvar scribe-fancy-paragraphs nil
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"*Non-NIL makes Scribe mode use a different style of paragraph separation.")
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(defvar scribe-electric-quote nil
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"*Non-NIL makes insert of double quote use `` or '' depending on context.")
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(defvar scribe-electric-parenthesis nil
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"*Non-NIL makes parenthesis char ( (]}> ) automatically insert its close
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if typed after an @Command form.")
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(defconst scribe-open-parentheses "[({<"
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"Open parenthesis characters for Scribe.")
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(defconst scribe-close-parentheses "])}>"
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"Close parenthesis characters for Scribe.
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These should match up with `scribe-open-parenthesis'.")
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(if (null scribe-mode-syntax-table)
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(let ((st (syntax-table)))
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(unwind-protect
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(progn
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(setq scribe-mode-syntax-table (copy-syntax-table
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text-mode-syntax-table))
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(set-syntax-table scribe-mode-syntax-table)
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(modify-syntax-entry ?\" " ")
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(modify-syntax-entry ?\\ " ")
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(modify-syntax-entry ?@ "w ")
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(modify-syntax-entry ?< "(> ")
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(modify-syntax-entry ?> ")< ")
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(modify-syntax-entry ?[ "(] ")
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(modify-syntax-entry ?] ")[ ")
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(modify-syntax-entry ?{ "(} ")
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(modify-syntax-entry ?} "){ ")
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(modify-syntax-entry ?' "w "))
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(set-syntax-table st))))
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(defvar scribe-mode-map nil)
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(if scribe-mode-map
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nil
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(setq scribe-mode-map (make-sparse-keymap))
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(define-key scribe-mode-map "\t" 'scribe-tab)
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(define-key scribe-mode-map "\e\t" 'tab-to-tab-stop)
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(define-key scribe-mode-map "\es" 'center-line)
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(define-key scribe-mode-map "\e}" 'up-list)
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(define-key scribe-mode-map "\eS" 'center-paragraph)
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(define-key scribe-mode-map "\"" 'scribe-insert-quote)
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(define-key scribe-mode-map "(" 'scribe-parenthesis)
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(define-key scribe-mode-map "[" 'scribe-parenthesis)
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(define-key scribe-mode-map "{" 'scribe-parenthesis)
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(define-key scribe-mode-map "<" 'scribe-parenthesis)
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(define-key scribe-mode-map "\^cc" 'scribe-chapter)
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(define-key scribe-mode-map "\^cS" 'scribe-section)
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(define-key scribe-mode-map "\^cs" 'scribe-subsection)
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(define-key scribe-mode-map "\^ce" 'scribe-insert-environment)
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(define-key scribe-mode-map "\^c\^e" 'scribe-bracket-region-be)
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(define-key scribe-mode-map "\^c[" 'scribe-begin)
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(define-key scribe-mode-map "\^c]" 'scribe-end)
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(define-key scribe-mode-map "\^ci" 'scribe-italicize-word)
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(define-key scribe-mode-map "\^cb" 'scribe-bold-word)
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(define-key scribe-mode-map "\^cu" 'scribe-underline-word))
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;;;###autoload
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(defun scribe-mode ()
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"Major mode for editing files of Scribe (a text formatter) source.
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Scribe-mode is similar text-mode, with a few extra commands added.
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\\{scribe-mode-map}
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Interesting variables:
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scribe-fancy-paragraphs
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Non-nil makes Scribe mode use a different style of paragraph separation.
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scribe-electric-quote
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Non-nil makes insert of double quote use `` or '' depending on context.
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scribe-electric-parenthesis
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Non-nil makes an open-parenthesis char (one of `([<{')
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automatically insert its close if typed after an @Command form."
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(interactive)
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(kill-all-local-variables)
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(use-local-map scribe-mode-map)
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(setq mode-name "Scribe")
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(setq major-mode 'scribe-mode)
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(define-abbrev-table 'scribe-mode-abbrev-table ())
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(setq local-abbrev-table scribe-mode-abbrev-table)
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(make-local-variable 'comment-start)
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(setq comment-start "@Comment[")
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(make-local-variable 'comment-start-skip)
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(setq comment-start-skip (concat "@Comment[" scribe-open-parentheses "]"))
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(make-local-variable 'comment-column)
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(setq comment-column 0)
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(make-local-variable 'comment-end)
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(setq comment-end "]")
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(make-local-variable 'paragraph-start)
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(setq paragraph-start (concat "\\(^[\n\f]\\)\\|\\(^@\\w+["
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scribe-open-parentheses
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"].*["
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scribe-close-parentheses
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"]$\\)"))
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(make-local-variable 'paragraph-separate)
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(setq paragraph-separate (if scribe-fancy-paragraphs
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paragraph-start "^$"))
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(make-local-variable 'compile-command)
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(setq compile-command (concat "scribe " (buffer-file-name)))
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(set-syntax-table scribe-mode-syntax-table)
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(run-hooks 'text-mode-hook 'scribe-mode-hook))
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(defun scribe-tab ()
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(interactive)
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(insert "@\\"))
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;; This algorithm could probably be improved somewhat.
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;; Right now, it loses seriously...
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(defun scribe ()
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"Run Scribe on the current buffer."
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(interactive)
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(call-interactively 'compile))
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(defun scribe-envelop-word (string count)
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"Surround current word with Scribe construct @STRING[...].
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COUNT specifies how many words to surround. A negative count means
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to skip backward."
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(let ((spos (point)) (epos (point)) (ccoun 0) noparens)
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(if (not (zerop count))
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(progn (if (= (char-syntax (preceding-char)) ?w)
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(forward-sexp (min -1 count)))
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(setq spos (point))
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(if (looking-at (concat "@\\w[" scribe-open-parentheses "]"))
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(forward-char 2)
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(goto-char epos)
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(skip-chars-backward "\\W")
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(forward-char -1))
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(forward-sexp (max count 1))
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(setq epos (point))))
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(goto-char spos)
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(while (and (< ccoun (length scribe-open-parentheses))
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(save-excursion
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(or (search-forward (char-to-string
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(aref scribe-open-parentheses ccoun))
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epos t)
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(search-forward (char-to-string
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(aref scribe-close-parentheses ccoun))
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epos t)))
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(setq ccoun (1+ ccoun))))
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(if (>= ccoun (length scribe-open-parentheses))
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(progn (goto-char epos)
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(insert "@end(" string ")")
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(goto-char spos)
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(insert "@begin(" string ")"))
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(goto-char epos)
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(insert (aref scribe-close-parentheses ccoun))
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(goto-char spos)
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(insert "@" string (aref scribe-open-parentheses ccoun))
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(goto-char epos)
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(forward-char 3)
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(skip-chars-forward scribe-close-parentheses))))
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(defun scribe-underline-word (count)
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"Underline COUNT words around point by means of Scribe constructs."
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(interactive "p")
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(scribe-envelop-word "u" count))
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(defun scribe-bold-word (count)
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"Boldface COUNT words around point by means of Scribe constructs."
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(interactive "p")
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(scribe-envelop-word "b" count))
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(defun scribe-italicize-word (count)
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"Italicize COUNT words around point by means of Scribe constructs."
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(interactive "p")
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(scribe-envelop-word "i" count))
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(defun scribe-begin ()
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(interactive)
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(insert "\n")
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(forward-char -1)
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(scribe-envelop-word "Begin" 0)
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(re-search-forward (concat "[" scribe-open-parentheses "]")))
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(defun scribe-end ()
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(interactive)
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(insert "\n")
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(forward-char -1)
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(scribe-envelop-word "End" 0)
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(re-search-forward (concat "[" scribe-open-parentheses "]")))
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(defun scribe-chapter ()
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(interactive)
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(insert "\n")
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(forward-char -1)
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(scribe-envelop-word "Chapter" 0)
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(re-search-forward (concat "[" scribe-open-parentheses "]")))
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(defun scribe-section ()
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(interactive)
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(insert "\n")
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(forward-char -1)
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(scribe-envelop-word "Section" 0)
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(re-search-forward (concat "[" scribe-open-parentheses "]")))
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(defun scribe-subsection ()
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(interactive)
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(insert "\n")
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(forward-char -1)
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(scribe-envelop-word "SubSection" 0)
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(re-search-forward (concat "[" scribe-open-parentheses "]")))
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(defun scribe-bracket-region-be (env min max)
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(interactive "sEnvironment: \nr")
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(save-excursion
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(goto-char max)
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(insert "@end(" env ")\n")
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(goto-char min)
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(insert "@begin(" env ")\n")))
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(defun scribe-insert-environment (env)
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(interactive "sEnvironment: ")
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(scribe-bracket-region-be env (point) (point))
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(forward-line 1)
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(insert ?\n)
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(forward-char -1))
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(defun scribe-insert-quote (count)
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"Insert ``, '' or \" according to preceding character.
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If `scribe-electric-quote' is non-NIL, insert ``, '' or \" according
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to preceding character. With numeric arg N, always insert N \" characters.
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Else just insert \"."
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(interactive "P")
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(if (or count (not scribe-electric-quote))
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(self-insert-command (prefix-numeric-value count))
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(let (lastfore lastback lastquote)
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(insert
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(cond
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((= (preceding-char) ?\\) ?\")
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((bobp) "``")
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(t
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(setq lastfore (save-excursion (and (search-backward
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"``" (- (point) 1000) t)
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(point)))
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lastback (save-excursion (and (search-backward
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"''" (- (point) 1000) t)
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(point)))
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lastquote (save-excursion (and (search-backward
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"\"" (- (point) 100) t)
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(point))))
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(if (not lastquote)
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(cond ((not lastfore) "``")
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((not lastback) "''")
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((> lastfore lastback) "''")
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(t "``"))
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(cond ((and (not lastback) (not lastfore)) "\"")
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((and lastback (not lastfore) (> lastquote lastback)) "\"")
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((and lastback (not lastfore) (> lastback lastquote)) "``")
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((and lastfore (not lastback) (> lastquote lastfore)) "\"")
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((and lastfore (not lastback) (> lastfore lastquote)) "''")
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((and (> lastquote lastfore) (> lastquote lastback)) "\"")
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((> lastfore lastback) "''")
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(t "``")))))))))
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(defun scribe-parenthesis (count)
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"If scribe-electric-parenthesis is non-NIL, insertion of an open-parenthesis
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character inserts the following close parenthesis character if the
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preceding text is of the form @Command."
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(interactive "P")
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(self-insert-command (prefix-numeric-value count))
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(let (at-command paren-char point-save)
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(if (or count (not scribe-electric-parenthesis))
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nil
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(save-excursion
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(forward-char -1)
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(setq point-save (point))
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(skip-chars-backward (concat "^ \n\t\f" scribe-open-parentheses))
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(setq at-command (and (equal (following-char) ?@)
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(/= (point) (1- point-save)))))
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(if (and at-command
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(setq paren-char
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(string-match (regexp-quote
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(char-to-string (preceding-char)))
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scribe-open-parentheses)))
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(save-excursion
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(insert (aref scribe-close-parentheses paren-char)))))))
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;;; scribe.el ends here
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