;;; iso-transl.el --- keyboard input definitions for ISO 8859/1.

;; Copyright (C) 1987, 1993, 1994, 1995 Free Software Foundation, Inc.

;; Author: Howard Gayle
;; Maintainer: FSF
;; Keywords: i18n

;; This file is part of GNU Emacs.

;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;; Loading this package defines three ways of entering the non-ASCII
;; printable characters with codes above 127: the prefix C-x 8, or the
;; Alt key, or a dead accent key.  For example, you can enter uppercase
;; A-umlaut as `C-x 8 " A' or `Alt-" A' (if you have an Alt key) or
;; `umlaut A' (if you have an umlaut/diaeresis key).

;; C-x 8 is set up to autoload this package,
;; but Alt keys and dead accent keys are only defined
;; once you have loaded the package.  It is nontrivial
;; to make all of the Alt keys autoload, and it is not clear
;; that the dead accent keys SHOULD autoload this package.

;;; Code:

;;; Provide some binding for startup:
;;;###autoload (or key-translation-map (setq key-translation-map (make-sparse-keymap)))
;;;###autoload (define-key key-translation-map "\C-x8" 'iso-transl-ctl-x-8-map)
;;;###autoload (autoload 'iso-transl-ctl-x-8-map "iso-transl" "Keymap for C-x 8 prefix." t 'keymap)
  
(defvar iso-transl-dead-key-alist
  '((?\' . mute-acute)
    (?\` . mute-grave)
    (?\" . mute-diaeresis)
    (?^ . mute-asciicircum)
    (?\~ . mute-asciitilde)
    (?\' . dead-acute)
    (?\` . dead-grave)
    (?\" . dead-diaeresis)
    (?^ . dead-asciicircum)
    (?\~ . dead-asciitilde)
    (?^ . dead-circum)
    (?^ . dead-circumflex)
    (?\~ . dead-tilde)
    ;; Someone reports that these keys don't work if shifted.
    ;; This might fix it--no word yet.
    (?\' . S-dead-acute)
    (?\` . S-dead-grave)
    (?\" . S-dead-diaeresis)
    (?^ . S-dead-asciicircum)
    (?\~ . S-dead-asciitilde)
    (?^ . S-dead-circum)
    (?^ . S-dead-circumflex)
    (?\~ . S-dead-tilde))
  "Mapping of ASCII characters to their corresponding dead-key symbols.")

;; The two-character mnemonics are intended to be available in all languages.
;; The ones beginning with `*' have one-character synonyms, but a
;; language-specific table might override the short form for its own use.

;; When a translation is non-ASCII, we use a symbol name
;; whose "function definition" is a translation, rather than
;; writing the translation directly here.
;; That is for the sake of C-x 8 C-h.
(defvar iso-transl-char-map
  '(("* "   . iso-transl-no-break-space)
    (" "    . iso-transl-no-break-space)
    ("*!"   . iso-transl-inverted-exclamation-mark)
    ("!"    . iso-transl-inverted-exclamation-mark)
    ("\"\"" . iso-transl-diaeresis)
    ("\"A"  . iso-transl-A-umlaut)
    ("\"E"  . iso-transl-E-umlaut)
    ("\"I"  . iso-transl-I-umlaut)
    ("\"O"  . iso-transl-O-umlaut)
    ("\"U"  . iso-transl-U-umlaut)
    ("\"a"  . iso-transl-a-umlaut)
    ("\"e"  . iso-transl-e-umlaut)
    ("\"i"  . iso-transl-i-umlaut)
    ("\"o"  . iso-transl-o-umlaut)
    ("\"s"  . iso-transl-ss)
    ("\"u"  . iso-transl-u-umlaut)
    ("\"y"  . iso-transl-y-umlaut)
    ("''"   . iso-transl-acute-accent)
    ("'A"   . iso-transl-A-acute)
    ("'E"   . iso-transl-E-acute)
    ("'I"   . iso-transl-I-acute)
    ("'O"   . iso-transl-O-acute)
    ("'U"   . iso-transl-U-acute)
    ("'Y"   . iso-transl-Y-acute)
    ("'a"   . iso-transl-a-acute)
    ("'e"   . iso-transl-e-acute)
    ("'i"   . iso-transl-i-acute)
    ("'o"   . iso-transl-o-acute)
    ("'u"   . iso-transl-u-acute)
    ("'y"   . iso-transl-y-acute)
    ("*$"   . iso-transl-general-currency-sign)
    ("$"    . iso-transl-general-currency-sign)
    ("*+"   . iso-transl-plus-or-minus-sign)
    ("+"    . iso-transl-plus-or-minus-sign)
    (",,"   . iso-transl-cedilla)
    (",C"   . iso-transl-C-cedilla)
    (",c"   . iso-transl-c-cedilla)
    ("*-"   . iso-transl-soft-hyphen)
    ("-"    . iso-transl-soft-hyphen)
    ("*."   . iso-transl-middle-dot)
    ("."    . iso-transl-middle-dot)
    ("//"   . iso-transl-division-sign)
    ("/A"   . iso-transl-A-ring)
    ("/E"   . iso-transl-AE)
    ("/O"   . iso-transl-O-slash)
    ("/a"   . iso-transl-a-ring)
    ("/e"   . iso-transl-ae)
    ("/o"   . iso-transl-o-slash)
    ("1/2"  . iso-transl-one-half)
    ("1/4"  . iso-transl-one-quarter)
    ("3/4"  . iso-transl-three-quarters)
    ("*<"   . iso-transl-angle-left)
    ("<"    . iso-transl-angle-left)
    ("*="   . iso-transl-macron)
    ("="    . iso-transl-macron)
    ("*>"   . iso-transl-angle-right)
    (">"    . iso-transl-angle-right)
    ("*?"   . iso-transl-inverted-question-mark)
    ("?"    . iso-transl-inverted-question-mark)
    ("*C"   . iso-transl-copyright-sign)
    ("C"    . iso-transl-copyright-sign)
    ("*L"   . iso-transl-pound-sign)
    ("L"    . iso-transl-pound-sign)
    ("*P"   . iso-transl-pilcrow)
    ("P"    . iso-transl-pilcrow)
    ("*R"   . iso-transl-registered-sign)
    ("R"    . iso-transl-registered-sign)
    ("*S"   . iso-transl-section-sign)
    ("S"    . iso-transl-section-sign)
    ("*Y"   . iso-transl-yen-sign)
    ("Y"    . iso-transl-yen-sign)
    ("^1"   . iso-transl-superscript-1)
    ("^2"   . iso-transl-superscript-2)
    ("^3"   . iso-transl-superscript-3)
    ("^A"   . iso-transl-A-caret)
    ("^E"   . iso-transl-E-caret)
    ("^I"   . iso-transl-I-caret)
    ("^O"   . iso-transl-O-caret)
    ("^U"   . iso-transl-U-caret)
    ("^a"   . iso-transl-a-caret)
    ("^e"   . iso-transl-E-caret)
    ("^i"   . iso-transl-I-caret)
    ("^o"   . iso-transl-O-caret)
    ("^u"   . iso-transl-U-caret)
    ("_a"   . iso-transl-ordinal-indicator-feminine)
    ("_o"   . iso-transl-ordinal-indicator-masculine)
    ("`A"   . iso-transl-A-grave)
    ("`E"   . iso-transl-E-grave)
    ("`I"   . iso-transl-I-grave)
    ("`O"   . iso-transl-O-grave)
    ("`U"   . iso-transl-U-grave)
    ("`a"   . iso-transl-a-grave)
    ("`e"   . iso-transl-e-grave)
    ("`i"   . iso-transl-i-grave)
    ("`o"   . iso-transl-o-grave)
    ("`u"   . iso-transl-u-grave)
    ("*c"   . iso-transl-cent-sign)
    ("c"    . iso-transl-cent-sign)
    ("*o"   . iso-transl-degree-sign)
    ("o"    . iso-transl-degree-sign)
    ("*u"   . iso-transl-micro-sign)
    ("u"    . iso-transl-micro-sign)
    ("*m"   . iso-transl-micro-sign)
    ("m"    . iso-transl-micro-sign)
    ("*x"   . iso-transl-multiplication-sign)
    ("x"    . iso-transl-multiplication-sign)
    ("*|"   . iso-transl-broken-vertical-line)
    ("|"    . iso-transl-broken-vertical-line)
    ("~A"   . iso-transl-A-tilde)
    ("~D"   . iso-transl-D-stroke)
    ("~N"   . iso-transl-N-tilde)
    ("~O"   . iso-transl-O-tilde)
    ("~T"   . iso-transl-THORN)
    ("~a"   . iso-transl-a-tilde)
    ("~d"   . iso-transl-d-stroke)
    ("~n"   . iso-transl-n-tilde)
    ("~o"   . iso-transl-o-tilde)
    ("~t"   . iso-transl-thorn)
    ("~~"   . iso-transl-not-sign)
    ("' "   . "'")
    ("` "   . "`")
    ("\" "  . "\"")
    ("^ "   . "^")
    ("~ "   . "~"))
  "Alist of character translations for entering ISO characters.
Each element has the form (STRING . VECTOR).
The sequence STRING of ASCII chars translates into the
sequence VECTOR.  (VECTOR is normally one character long.)")

(defalias 'iso-transl-no-break-space [160])
(defalias 'iso-transl-inverted-exclamation-mark [161])
(defalias 'iso-transl-cent-sign [162])
(defalias 'iso-transl-pound-sign [163])
(defalias 'iso-transl-general-currency-sign [164])
(defalias 'iso-transl-yen-sign [165])
(defalias 'iso-transl-broken-vertical-line [166])
(defalias 'iso-transl-section-sign [167])
(defalias 'iso-transl-diaeresis [168])
(defalias 'iso-transl-copyright-sign [169])
(defalias 'iso-transl-ordinal-indicator-feminine [170])
(defalias 'iso-transl-angle-left [171])
(defalias 'iso-transl-not-sign [172])
(defalias 'iso-transl-soft-hyphen [173])
(defalias 'iso-transl-registered-sign [174])
(defalias 'iso-transl-macron [175])
(defalias 'iso-transl-degree-sign [176])
(defalias 'iso-transl-plus-or-minus-sign [177])
(defalias 'iso-transl-superscript-2 [178])
(defalias 'iso-transl-superscript-3 [179])
(defalias 'iso-transl-acute-accent [180])
(defalias 'iso-transl-micro-sign [181])
(defalias 'iso-transl-pilcrow [182])
(defalias 'iso-transl-middle-dot [183])
(defalias 'iso-transl-cedilla [184])
(defalias 'iso-transl-superscript-1 [185])
(defalias 'iso-transl-ordinal-indicator-masculine [186])
(defalias 'iso-transl-angle-right [187])
(defalias 'iso-transl-one-quarter [188])
(defalias 'iso-transl-one-half [189])
(defalias 'iso-transl-three-quarters [190])
(defalias 'iso-transl-inverted-question-mark [191])
(defalias 'iso-transl-A-grave [192])
(defalias 'iso-transl-A-acute [193])
(defalias 'iso-transl-A-caret [194])
(defalias 'iso-transl-A-tilde [195])
(defalias 'iso-transl-A-umlaut [196])
(defalias 'iso-transl-A-ring [197])
(defalias 'iso-transl-AE [198])
(defalias 'iso-transl-C-cedilla [199])
(defalias 'iso-transl-E-grave [200])
(defalias 'iso-transl-E-acute [201])
(defalias 'iso-transl-E-caret [202])
(defalias 'iso-transl-E-umlaut [203])
(defalias 'iso-transl-I-grave [204])
(defalias 'iso-transl-I-acute [205])
(defalias 'iso-transl-I-caret [206])
(defalias 'iso-transl-I-umlaut [207])
(defalias 'iso-transl-D-stroke [208])
(defalias 'iso-transl-N-tilde [209])
(defalias 'iso-transl-O-grave [210])
(defalias 'iso-transl-O-acute [211])
(defalias 'iso-transl-O-caret [212])
(defalias 'iso-transl-O-tilde [213])
(defalias 'iso-transl-O-umlaut [214])
(defalias 'iso-transl-multiplication-sign [215])
(defalias 'iso-transl-O-slash [216])
(defalias 'iso-transl-U-grave [217])
(defalias 'iso-transl-U-acute [218])
(defalias 'iso-transl-U-caret [219])
(defalias 'iso-transl-U-umlaut [220])
(defalias 'iso-transl-Y-acute [221])
(defalias 'iso-transl-THORN [222])
(defalias 'iso-transl-ss [223])
(defalias 'iso-transl-a-grave [224])
(defalias 'iso-transl-a-acute [225])
(defalias 'iso-transl-a-caret [226])
(defalias 'iso-transl-a-tilde [227])
(defalias 'iso-transl-a-umlaut [228])
(defalias 'iso-transl-a-ring [229])
(defalias 'iso-transl-ae [230])
(defalias 'iso-transl-c-cedilla [231])
(defalias 'iso-transl-e-grave [232])
(defalias 'iso-transl-e-acute [233])
(defalias 'iso-transl-E-caret [234])
(defalias 'iso-transl-e-umlaut [235])
(defalias 'iso-transl-i-grave [236])
(defalias 'iso-transl-i-acute [237])
(defalias 'iso-transl-I-caret [238])
(defalias 'iso-transl-i-umlaut [239])
(defalias 'iso-transl-d-stroke [240])
(defalias 'iso-transl-n-tilde [241])
(defalias 'iso-transl-o-grave [242])
(defalias 'iso-transl-o-acute [243])
(defalias 'iso-transl-O-caret [244])
(defalias 'iso-transl-o-tilde [245])
(defalias 'iso-transl-o-umlaut [246])
(defalias 'iso-transl-division-sign [247])
(defalias 'iso-transl-o-slash [248])
(defalias 'iso-transl-u-grave [249])
(defalias 'iso-transl-u-acute [250])
(defalias 'iso-transl-U-caret [251])
(defalias 'iso-transl-u-umlaut [252])
(defalias 'iso-transl-y-acute [253])
(defalias 'iso-transl-thorn [254])
(defalias 'iso-transl-y-umlaut [255])

;; Language-specific translation lists.
(defvar iso-transl-language-alist
  '(("Esperanto"
     ("C"  . [198])
     ("G"  . [216])
     ("H"  . [166])
     ("J"  . [172])
     ("S"  . [222])
     ("U"  . [221])
     ("c"  . [230])
     ("g"  . [248])
     ("h"  . [182])
     ("j"  . [188])
     ("s"  . [254])
     ("u"  . [253]))
    ("French"
     ("C"  . [199])
     ("c"  . [231]))
    ("German"
     ("A"  . [196])
     ("O"  . [214]) 
     ("U"  . [220])
     ("a"  . [228])
     ("o"  . [246])
     ("s"  . [223])
     ("u"  . [252]))
    ("Portuguese"
     ("C"  . [199])
     ("c"  . [231]))
    ("Spanish"
     ("!"  . [161])
     ("?"  . [191])
     ("N"  . [209])
     ("n"  . [241]))))

(defvar iso-transl-ctl-x-8-map nil
  "Keymap for C-x 8 prefix.")
(or iso-transl-ctl-x-8-map
    (fset 'iso-transl-ctl-x-8-map
	  (setq iso-transl-ctl-x-8-map (make-sparse-keymap))))
(or key-translation-map
    (setq key-translation-map (make-sparse-keymap)))
(define-key key-translation-map "\C-x8" iso-transl-ctl-x-8-map)

;; For each entry in the alist, we'll make up to three ways to generate
;; the character in question: the prefix `C-x 8'; the ALT modifier on
;; the first key of the sequence; and (if applicable) replacing the first
;; key of the sequence with the corresponding dead key.  For example, a
;; character associated with the string "~n" can be input with `C-x 8 ~ n'
;; or `Alt-~ n' or `mute-asciitilde n'.
(defun iso-transl-define-keys (alist)
  (while alist
    (let ((translated-vec (cdr (car alist))))
      (define-key iso-transl-ctl-x-8-map (car (car alist)) translated-vec)
      (let ((inchar (aref (car (car alist)) 0))
	    (vec (vconcat (car (car alist))))
	    (tail iso-transl-dead-key-alist))
	(aset vec 0 (logior (aref vec 0) ?\A-\^@))
	(define-key key-translation-map vec translated-vec)
	(define-key isearch-mode-map (vector (aref vec 0)) nil)
	(while tail
	  (if (eq (car (car tail)) inchar)
	      (let ((deadvec (copy-sequence vec))
		    (deadkey (cdr (car tail))))
		(aset deadvec 0 deadkey)
		(define-key isearch-mode-map (vector deadkey) nil)
		(define-key key-translation-map deadvec translated-vec)))
	  (setq tail (cdr tail)))))
    (setq alist (cdr alist))))

(defun iso-transl-set-language (lang)
  (interactive (list (let ((completion-ignore-case t))
		       (completing-read "Set which language? "
					iso-transl-language-alist nil t))))
  (iso-transl-define-keys (cdr (assoc lang iso-transl-language-alist))))


;; The standard mapping comes automatically.  You can partially overlay it
;; with a language-specific mapping by using `M-x iso-transl-set-language'.
(iso-transl-define-keys iso-transl-char-map)

(define-key isearch-mode-map "\C-x" nil)
(define-key isearch-mode-map [?\C-x t] 'isearch-other-control-char)
(define-key isearch-mode-map "\C-x8" nil)


(provide 'iso-transl)

;;; iso-transl.el ends here
