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(tibetan-add-components): Fixes for new

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encoding of Tibetan characters.
(tibetan-decompose-precomposition-alist): New variable.
(tibetan-decompose-region): Convert precomposed characters to
non-precomposed characters.
(tibetan-decompose-string): Likewise.
(tibetan-composition-function): Fix args to
thibetan-compose-string.
This commit is contained in:
Kenichi Handa 2000-06-01 10:59:56 +00:00
parent e6f023725d
commit 6b12c74972
1 changed files with 48 additions and 10 deletions
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58
lisp/language/tibet-util.el
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@ -118,7 +118,7 @@ The returned string has no composition information."
;;;
;;; Here are examples of the words "bsgrubs" and "h'uM"
;;;
;;; 4$(7"70"714%qx!"U0"G###C"U14"70"714"G0"G1(B 4$(7"Hx!#Ax!"Ur'"_0"H"A"U"_1(B
;;; 4$(7"70"714%qx!"U0"G###C"U14"70"714"G0"G1(B 4$(7"Hx!"Rx!"Ur'"_0"H"A"U"_1(B
;;;
;;; M
;;; b s b s h
@ -144,7 +144,7 @@ The returned string has no composition information."
;; If 'a follows a consonant, turn it into the subjoined form.
(if (and (= char ?$(7"A(B)
(aref (char-category-set (car last)) ?0))
(setq char ?$(7#A(B))
(setq char ?$(7"R(B)) ;; modified for new font by Tomabechi 1999/12/10
(cond
;; Compose upper vowel sign vertically over.
@ -153,27 +153,30 @@ The returned string has no composition information."
;; Compose lower vowel sign vertically under.
((aref (char-category-set char) ?3)
(setq rule stack-under))
(if (eq char ?$(7"Q(B) ;; `$(7"Q(B' should not visible when composed.
(setq rule nil)
(setq rule stack-under)))
;; Transform ra-mgo (superscribed r) if followed by a subjoined
;; consonant other than w, ', y, r.
((and (= (car last) ?$(7"C(B)
(not (memq char '(?$(7#>(B ?$(7#A(B ?$(7#B(B ?$(7#C(B))))
(setcar last ?$(7#P(B)
(not (memq char '(?$(7#>(B ?$(7"R(B ?$(7#B(B ?$(7#C(B))))
(setcar last ?$(7!"(B) ;; modified for newfont by Tomabechi 1999/12/10
(setq rule stack-under))
;; Transform initial base consonant if followed by a subjoined
;; consonant but 'a.
(t
(let ((laststr (char-to-string (car last))))
(if (and (/= char ?$(7#A(B)
(string-match "[$(7"!(B-$(7"="?"@"D(B-$(7"J(B]" laststr))
(if (and (/= char ?$(7"R(B) ;; modified for new font by Tomabechi
(string-match "[$(7"!(B-$(7"="?"@"D(B-$(7"J"K(B]" laststr))
(setcar last (string-to-char
(cdr (assoc (char-to-string (car last))
tibetan-base-to-subjoined-alist)))))
(setq rule stack-under))))
(setcdr last (list rule char))))
(if rule
(setcdr last (list rule char)))))
;;;###autoload
(defun tibetan-compose-string (str)
@ -231,10 +234,45 @@ The returned string has no composition information."
(forward-char 1))
(compose-region from to components)))))))
(defvar tibetan-decompose-precomposition-alist
(mapcar (function (lambda (x) (cons (string-to-char (cdr x)) (car x))))
tibetan-precomposition-rule-alist))
;;;###autoload
(defalias 'tibetan-decompose-region 'decompose-region)
(defun tibetan-decompose-region (from to)
"Decompose Tibetan text in the region FROM and TO.
This is different from decompose-region because precomposed Tibetan characters
are decomposed into normal Tiebtan character sequences."
(interactive "r")
(save-restriction
(narrow-to-region from to)
(decompose-region from to)
(goto-char from)
(while (not (eobp))
(let* ((char (following-char))
(slot (assq char tibetan-decompose-precomposition-alist)))
(if slot
(progn
(delete-char 1)
(insert (cdr slot)))
(forward-char 1))))))
;;;###autoload
(defalias 'tibetan-decompose-string 'decompose-string)
(defun tibetan-decompose-string (str)
"Decompose Tibetan string STR.
This is different from decompose-string because precomposed Tibetan characters
are decomposed into normal Tiebtan character sequences."
(let ((new "")
(len (length str))
(idx 0)
char slot)
(while (< idx len)
(setq char (aref str idx)
slot (assq (aref str idx) tibetan-decompose-precomposition-alist)
new (concat new (if slot (cdr slot) (char-to-string char)))
idx (1+ idx)))
new))
;;;###autoload
(defun tibetan-composition-function (from to pattern &optional string)