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[xemacs-hg @ 2003-02-21 06:56:46 by ben] redisplay fixes et al. PROBLEMS: Add comment about Cygwin, unexec and sysmalloc. Move some non-general stuff out of general. Make a section for x86. configure.in: Add check for broken alloca in funcalls. mule/mule-cmds.el: Alias file-name to native not vice-versa. Do set EOL of native but not of process output to fix various problems and be consistent with code-init.el. code-cmds.el: Return a name not a coding system. code-init.el: Reindent. Remove `file-name' since it should always be the same as native. unicode.el: Rename to load-unicode-mapping-table as suggested by the anonymous (but rather Turnbullian) comment in unicode.c. xemacs.dsp: Add /k to default build. alloc.c: Make gc_currently_forbidden static. config.h.in, lisp.h: Move some stuff to lisp.h. console-gtk.h, console-impl.h, console-msw.h, console-x.h, event-Xt.c, event-msw.c, redisplay-gtk.c, redisplay-msw.c, redisplay-output.c, redisplay-x.c, gtk-xemacs.c: Remove duplicated code to redraw exposed area. Add deadbox method needed by the generalized redraw code. Defer redrawing if already in redisplay. frame-msw.c, event-stream.c, frame.c: Add comments about calling Lisp. debug.c, general-slots.h: Move generalish symbols to general-slots.h. doprnt.c: reindent. lisp.h, dynarr.c: Add debug code for locking a dynarr to catch invalid mods. Use in redisplay.c. eval.c: file-coding.c: Define file-name as alias for native not vice-versa. frame-gtk.c, frame-x.c: Move Qwindow_id to general-slots. dialog-msw.c, glyphs-gtk.c, glyphs-msw.c, glyphs-widget.c, glyphs-x.c, gui.c, gui.h, menubar-msw.c, menubar.c: Ensure that various glyph functions that eval within redisplay protect the evals. Same for calls to internal_equal(). Modify various functions, e.g. gui_item_*(), to protect evals within redisplay, taking an in_redisplay parameter if it's possible for them to be called both inside and outside of redisplay. gutter.c: Defer specifier-changed updating till after redisplay, if necessary, since we need to enter redisplay to do it. gutter.c: Do nothing if in redisplay. lisp.h: Add version of alloca() for use in function calls. lisp.h: Add XCAD[D+]R up to 6 D's, and aliases X1ST, X2ND, etc. frame.c, frame.h, redisplay.c, redisplay.h, signal.c, toolbar.c: Redo critical-section code and move from frame.c to redisplay.c. Require that every place inside of redisplay catch errors itself, not at the edge of the critical section (thereby bypassing the rest of redisplay and leaving things in an inconsistent state). Introduce separate means of holding frame-size changes without entering a complete critical section. Introduce "post-redisplay" methods for deferring things till after redisplay. Abort if we enter redisplay reentrantly. Disable all quit checking in redisplay since it's too dangerous. Ensure that all calls to QUIT trigger an abort if unprotected. redisplay.c, scrollbar-gtk.c, scrollbar-x.c, scrollbar.c: Create enter/exit_redisplay_critical_section_maybe() for code that needs to ensure it's in a critical section but doesn't interfere with an existing critical section. sysdep.c: Use _wexecve() when under Windows NT for Unicode correctness. text.c, text.h: Add new_dfc() functions, which return an alloca()ed value rather than requiring an lvalue. (Not really used yet; used in another workspace, to come.) Add some macros for SIZED_EXTERNAL. Update the encoding aliases after involved scrutinization of the X manual. unicode.c: Answer the anonymous but suspiciously Turnbullian questions. Rename parse-unicode-translation-table to load-unicode-mapping-table, as suggested.
author ben
date Fri, 21 Feb 2003 06:57:21 +0000
parents 026c5bf9c134
children 98af8a976fc3
line wrap: on
line source

;;; vietnamese.el --- Support for Vietnamese -*- coding: iso-2022-7bit; -*-

;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
;; Licensed to the Free Software Foundation.
;; Copyright (C) 1997 MORIOKA Tomohiko
;; Copyright (C) 2002 Ben Wing.

;; Keywords: multilingual, Vietnamese

;; This file is part of XEmacs.

;; XEmacs 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.

;; XEmacs 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 XEmacs; see the file COPYING.  If not, write to the Free
;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
;; 02111-1307, USA.

;;; Commentary:

;; For Vietnames, the character sets VISCII and VSCII are supported.

;;; Code:

;; Vietnamese VISCII.  VISCII is 1-byte character set which contains
;; more than 96 characters.  Since Emacs can't handle it as one
;; character set, it is divided into two: lower case letters and upper
;; case letters.
(make-charset 'vietnamese-viscii-lower "VISCII1.1 lower-case"
	      '(dimension
		1
		registry "VISCII1.1"
		chars 96
		columns 1
		direction l2r
		final ?1
		graphic 1
		short-name "VISCII lower"
		long-name "VISCII lower-case"
		))

(make-charset 'vietnamese-viscii-upper "VISCII1.1 upper-case"
	      '(dimension
		1
		registry "VISCII1.1"
		chars 96
		columns 1
		direction l2r
		final ?2
		graphic 1
		short-name "VISCII upper"
		long-name "VISCII upper-case"
		))

(modify-syntax-entry 'vietnamese-viscii-lower "w")
(modify-syntax-entry 'vietnamese-viscii-upper "w")

(define-category ?v "Vietnamese character.")
(modify-category-entry 'vietnamese-viscii-lower ?v)
(modify-category-entry 'vietnamese-viscii-upper ?v)

(eval-and-compile

(defvar viet-viscii-decode-table
  [;; VISCII is a full 8-bit code.
   0 1 ?,2F(B 3 4 ?,2G(B ?,2g(B 7 8 9 10 11 12 13 14 15
   16 17 18 19 ?,2V(B 21 22 23 24 ?,2[(B 26 27 28 29 ?,2\(B 31
   32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
   48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
   64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
   80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
   96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
   112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 
   ?,2U(B ?,2!(B ?,2"(B ?,2#(B ?,2$(B ?,2%(B ?,2&(B ?,2'(B ?,2((B ?,2)(B ?,2*(B ?,2+(B ?,2,(B ?,2-(B ?,2.(B ?,2/(B
   ?,20(B ?,21(B ?,22(B ?,25(B ?,2~(B ?,2>(B ?,26(B ?,27(B ?,28(B ?,2v(B ?,2w(B ?,2o(B ?,2|(B ?,2{(B ?,2x(B ?,2O(B
   ?,2u(B ?,1!(B ?,1"(B ?,1#(B ?,1$(B ?,1%(B ?,1&(B ?,1'(B ?,1((B ?,1)(B ?,1*(B ?,1+(B ?,1,(B ?,1-(B ?,1.(B ?,1/(B
   ?,10(B ?,11(B ?,12(B ?,2^(B ?,2=(B ?,15(B ?,16(B ?,17(B ?,18(B ?,2q(B ?,2Q(B ?,2W(B ?,2X(B ?,1=(B ?,1>(B ?,2_(B
   ?,2`(B ?,2a(B ?,2b(B ?,2c(B ?,2d(B ?,2e(B ?,1F(B ?,1G(B ?,2h(B ?,2i(B ?,2j(B ?,2k(B ?,2l(B ?,2m(B ?,2n(B ?,1O(B
   ?,2p(B ?,1Q(B ?,2r(B ?,2s(B ?,2t(B ?,1U(B ?,1V(B ?,1W(B ?,1X(B ?,2y(B ?,2z(B ?,1[(B ?,1\(B ?,2}(B ?,1^(B ?,1_(B
   ?,1`(B ?,1a(B ?,1b(B ?,1c(B ?,1d(B ?,1e(B ?,1f(B ?,1g(B ?,1h(B ?,1i(B ?,1j(B ?,1k(B ?,1l(B ?,1m(B ?,1n(B ?,1o(B
   ?,1p(B ?,1q(B ?,1r(B ?,1s(B ?,1t(B ?,1u(B ?,1v(B ?,1w(B ?,1x(B ?,1y(B ?,1z(B ?,1{(B ?,1|(B ?,1}(B ?,1~(B ?,2f(B ]
  "Vietnamese VISCII decoding table.")

(defvar viet-viscii-encode-table
  (let ((table-lower (make-vector 128 0))
	(table-upper (make-vector 128 0))
	(i 0)
	char-component)
    (while (< i 256)
      (setq char-component
	    (split-char (aref viet-viscii-decode-table i)))
      (cond ((eq (car char-component) 'vietnamese-viscii-lower)
	     (aset table-lower (nth 1 char-component) i))
	    ((eq (car char-component) 'vietnamese-viscii-upper)
	     (aset table-upper (nth 1 char-component) i)))
      (setq i (1+ i)))
    (cons table-lower table-upper))
  "Vietnamese VISCII encoding table.
Cons of tables for encoding lower-case chars and upper-case characters.
Both tables are indexed by the position code of Vietnamese characters.")

(defvar viet-vscii-decode-table
  [;; VSCII is a full 8-bit code.
   0 ?,2z(B ?,2x(B 3 ?,2W(B ?,2X(B ?,2f(B 7 8 9 10 11 12 13 14 15
   16 ?,2Q(B ?,2_(B ?,2O(B ?,2V(B ?,2[(B ?,2}(B ?,2\(B 24 25 26 27 28 29 30 31
   32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
   48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
   64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
   80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
   96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
   112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 
   ?,2`(B ?,2d(B ?,2c(B ?,2a(B ?,2U(B ?,2#(B ?,2'(B ?,2h(B ?,2k(B ?,2((B ?,2i(B ?,2)(B ?,2.(B ?,2l(B ?,2o(B ?,2n(B
   ?,2m(B ?,28(B ?,2r(B ?,2v(B ?,2u(B ?,2s(B ?,2w(B ?,25(B ?,26(B ?,27(B ?,2^(B ?,2>(B ?,2~(B ?,2y(B ?,2|(B ?,2{(B
   160 ?,2e(B ?,2b(B ?,2j(B ?,2t(B ?,2=(B ?,2_(B ?,2p(B ?,1e(B ?,1b(B ?,1j(B ?,1t(B ?,1>(B ?,1y(B ?,1p(B ?,2"(B
   192 193 194 195 196 ?,1`(B ?,1d(B ?,1c(B ?,1a(B ?,1U(B ?,2F(B ?,1"(B ?,1F(B ?,1G(B ?,1!(B ?,2G(B
   ?,2!(B ?,2%(B ?,2&(B ?,2g(B ?,2%(B ?,2+(B ?,1#(B ?,1%(B ?,1&(B ?,1g(B ?,1$(B ?,1'(B ?,1h(B ?,2,(B ?,1k(B ?,1((B
   ?,1i(B ?,1)(B ?,1+(B ?,1,(B ?,1-(B ?,1*(B ?,1.(B ?,1l(B ?,1o(B ?,2-(B ?,2*(B ?,20(B ?,1n(B ?,1m(B ?,18(B ?,1r(B
   ?,21(B ?,1v(B ?,1u(B ?,1s(B ?,1w(B ?,10(B ?,11(B ?,12(B ?,1/(B ?,15(B ?,16(B ?,17(B ?,1^(B ?,1>(B ?,1~(B ?,1y(B
   ?,22(B ?,1|(B ?,1{(B ?,1z(B ?,1x(B ?,1W(B ?,1X(B ?,1f(B ?,1Q(B ?,1q(B ?,1O(B ?,1V(B ?,1[(B ?,1}(B ?,1\(B ?,2/(B]
  "Vietnamese VSCII decoding table.")

(defvar viet-vscii-encode-table
  (let ((table-lower (make-vector 128 0))
	(table-upper (make-vector 128 0))
	(i 0)
	char-component)
    (while (< i 256)
      (setq char-component
	    (split-char (aref viet-vscii-decode-table i)))
      (cond ((eq (car char-component) 'vietnamese-viscii-lower)
	     (aset table-lower (nth 1 char-component) i))
	    ((eq (car char-component) 'vietnamese-viscii-upper)
	     (aset table-upper (nth 1 char-component) i)))
      (setq i (1+ i)))
    (cons table-lower table-upper))
  "Vietnamese VSCII encoding table.
Cons of tables for encoding lower-case chars and upper-case characters.
Both tables are indexed by the position code of Vietnamese characters.")

)

(define-ccl-program ccl-decode-viscii
  `(3
    ((read r0)
     (loop
      (write-read-repeat r0 ,viet-viscii-decode-table))
     ))
  "CCL program to decode VISCII 1.1")

;; Multibyte form of a Vietnamese character is as follows (3-byte):
;;   LEADING-CODE-PRIVATE-11 LEADING-CODE-EXTENDED-11 POSITION-CODE
;; where LEADING-CODE-EXTENDED-11 for Vietnamese is
;; `vietnamese-viscii-lower' or `vietnamese-viscii-upper'.

(defvar leading-code-private-11 #x9E)

(define-ccl-program ccl-encode-viscii
  `(1
     ((read r0)
      (loop
       (if (r0 < 128)
	   ;; ASCII
	   (write-read-repeat r0)
	 ;; not ASCII
	 (if (r0 != ,leading-code-private-11)
	     ;; not Vietnamese
	     (write-read-repeat r0)
	   ((read-if (r0 == ,(charset-id 'vietnamese-viscii-lower))
	     (;; Vietnamese lower
	      (read r0)
	      (r0 -= 128)
	      (write-read-repeat r0 ,(car viet-viscii-encode-table)))
	     (if (r0 == ,(charset-id 'vietnamese-viscii-upper))
		 (;; Vietnamese upper
		  (read r0)
		  (r0 -= 128)
		  (write-read-repeat r0 ,(cdr viet-viscii-encode-table)))
	       ;; not Vietnamese
	       (write-read-repeat r0)))))))))
  "CCL program to encode VISCII 1.1")

(define-ccl-program ccl-encode-viscii-font
  `(0
    ;; In:  R0:vietnamese-viscii-lower/vietnamese-viscii-upper
    ;;      R1:position code
    ;; Out: R1:font code point
    (if (r0 == ,(charset-id 'vietnamese-viscii-lower))
	(r1 = r1 ,(car viet-viscii-encode-table))
      (r1 = r1 ,(cdr viet-viscii-encode-table)))
    )
  "CCL program to encode Vietnamese chars to VISCII 1.1 font")

(define-ccl-program ccl-decode-vscii
  `(3
    ((read r0)
     (loop
      (write-read-repeat r0 ,viet-vscii-decode-table))
     ))
  "CCL program to decode VSCII-1.")

(define-ccl-program ccl-encode-vscii
  `(1
    ((read r0)
     (loop
      (if (r0 < 128)
	  ;; ASCII
	  (write-read-repeat r0)
	;; not ASCII 
	(if (r0 != ,leading-code-private-11)
	    ;; not Vietnamese
	    (write-read-repeat r0)
	  (read-if (r0 == ,(charset-id 'vietnamese-viscii-lower))
		   (;; Vietnamese lower
		    (read r0)
		    (r0 -= 128)
		    (write-read-repeat r0 ,(car viet-vscii-encode-table)))
		   (if (r0 == ,(charset-id 'vietnamese-viscii-upper))
		       (;; Vietnamese upper
			(read r0)
			(r0 -= 128)
			(write-read-repeat r0 ,(cdr viet-vscii-encode-table)))
		     ;; not Vietnamese
		     (write-read-repeat r0))))))))
  "CCL program to encode VSCII-1.")

(define-ccl-program ccl-encode-vscii-font
  `(0
    ;; In:  R0:vietnamese-viscii-lower/vietnamese-viscii-upper
    ;;      R1:position code
    ;; Out: R1:font code point
    (if (r0 == ,(charset-id 'vietnamese-viscii-lower))
	(r1 = r1 ,(car viet-vscii-encode-table))
      (r1 = r1 ,(cdr viet-vscii-encode-table)))
    )
  "CCL program to encode Vietnamese chars to VSCII-1 font.")


(make-coding-system
 'viscii 'ccl
 "VISCII 1.1 (Vietnamese)"
 `(mnemonic "VISCII"
   decode ccl-decode-viscii
   encode ccl-encode-viscii))

;; it is not correct, but XEmacs doesn't have `ccl' category...
(coding-system-put 'viscii 'category 'iso-8-1)

;; (make-coding-system
;;  'vietnamese-viscii 4 ?V
;;  "8-bit encoding for Vietnamese VISCII 1.1 (MIME:VISCII)"
;;  '(ccl-decode-viscii . ccl-encode-viscii)
;;  '((safe-charsets ascii vietnamese-viscii-lower vietnamese-viscii-upper)
;;    (mime-charset . viscii)
;;    (valid-codes (0 . 255))))

;; (define-coding-system-alias 'viscii 'vietnamese-viscii)

(make-coding-system
 'vscii 'ccl
 "VSCII 1.1 (Vietnamese)"
 `(mnemonic "VSCII"
   decode ccl-decode-vscii
   encode ccl-encode-vscii))

;; (make-coding-system
;;  'vietnamese-vscii 4 ?v
;;  "8-bit encoding for Vietnamese VSCII-1"
;;  '(ccl-decode-vscii . ccl-encode-vscii)
;;  '((safe-charsets ascii vietnamese-viscii-lower vietnamese-viscii-upper)
;;    (valid-codes (0 . 255))))

;; (define-coding-system-alias 'vscii 'vietnamese-vscii)

(make-coding-system
 'viqr 'no-conversion
 "VIQR (Vietnamese)"
 '(mnemonic "VIQR"
   eol-type lf
   post-read-conversion viqr-post-read-conversion
   pre-write-conversion viqr-pre-write-conversion))

;; (make-coding-system
;;  'vietnamese-viqr 0 ?q
;;  "Vietnamese latin transcription (VIQR)"
;;  nil
;;  '((safe-charsets ascii vietnamese-viscii-lower vietnamese-viscii-upper)
;;    (post-read-conversion . viqr-post-read-conversion)
;;    (pre-write-conversion . viqr-pre-write-conversion)
;;    (charset-origin-alist
;;     (vietnamese-viscii-lower "VISCII" viet-encode-viscii-char)
;;     (vietnamese-viscii-upper "VISCII" viet-encode-viscii-char))))

;; (define-coding-system-alias 'viqr 'vietnamese-viqr)

;; For VISCII users
(set-charset-ccl-program 'vietnamese-viscii-lower
			 'ccl-encode-viscii-font)
(set-charset-ccl-program 'vietnamese-viscii-upper
			 'ccl-encode-viscii-font)
;; For VSCII users
(set-charset-ccl-program 'vietnamese-viscii-lower 'ccl-encode-vscii-font)
(set-charset-ccl-program 'vietnamese-viscii-upper 'ccl-encode-vscii-font)

;; (setq font-ccl-encoder-alist
;;       (cons (cons "viscii" ccl-encode-viscii-font) font-ccl-encoder-alist))

;; (setq font-ccl-encoder-alist
;;       (cons (cons "vscii" ccl-encode-vscii-font) font-ccl-encoder-alist))

(defvar viet-viscii-to-external-code-table
  (let ((table (make-char-table 'generic))
	(i 0)
	(len (length viet-viscii-decode-table)))
    (while (< i len)
      (let ((ch (aref viet-viscii-decode-table i)))
	(if (characterp ch)
	    (put-char-table ch i table)))
      (incf i)))
  "Table to convert from characters to their VISCII code.")

(set-language-info-alist
 "Vietnamese" '((charset vietnamese-viscii-lower vietnamese-viscii-upper)
		(coding-system viscii vscii viqr)
		(coding-priority viscii)
		(locale "vietnamese" "vi")
		(input-method . "vietnamese-viqr")
		(features viet-util)
		(sample-text . "Vietnamese (Ti,1*(Bng Vi,1.(Bt)	Ch,1`(Bo b,1U(Bn")
		(documentation . "\
For Vietnamese, Emacs uses special charsets internally.
They can be decoded from and encoded to VISCC, VSCII, and VIQR.
Current setting put higher priority to the coding system VISCII than VSCII.
If you prefer VSCII, please do: (prefer-coding-system 'vietnamese-vscii)")
		))

;;; vietnamese.el ends here