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1 ;;; vietnamese.el --- Support for Vietnamese -*- coding: iso-2022-7bit; -*-
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2
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3 ;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
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4 ;; Licensed to the Free Software Foundation.
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5 ;; Copyright (C) 1997 MORIOKA Tomohiko
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6
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7 ;; Keywords: multilingual, Vietnamese
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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24 ;; 02111-1307, USA.
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25
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26 ;;; Commentary:
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27
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28 ;; For Vietnames, the character sets VISCII and VSCII are supported.
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29
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30 ;;; Code:
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31
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32 (eval-and-compile
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33
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34 (defvar viet-viscii-decode-table
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35 [;; VISCII is a full 8-bit code.
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36 0 1 ?,2F(B 3 4 ?,2G(B ?,2g(B 7 8 9 10 11 12 13 14 15
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37 16 17 18 19 ?,2V(B 21 22 23 24 ?,2[(B 26 27 28 29 ?,2\(B 31
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38 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
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39 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
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40 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
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41 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
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42 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
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43 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
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44 ?,2U(B ?,2!(B ?,2"(B ?,2#(B ?,2$(B ?,2%(B ?,2&(B ?,2'(B ?,2((B ?,2)(B ?,2*(B ?,2+(B ?,2,(B ?,2-(B ?,2.(B ?,2/(B
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45 ?,20(B ?,21(B ?,22(B ?,25(B ?,2~(B ?,2>(B ?,26(B ?,27(B ?,28(B ?,2v(B ?,2w(B ?,2o(B ?,2|(B ?,2{(B ?,2x(B ?,2O(B
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46 ?,2u(B ?,1!(B ?,1"(B ?,1#(B ?,1$(B ?,1%(B ?,1&(B ?,1'(B ?,1((B ?,1)(B ?,1*(B ?,1+(B ?,1,(B ?,1-(B ?,1.(B ?,1/(B
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47 ?,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
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48 ?,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
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49 ?,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
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50 ?,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
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51 ?,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 ]
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52 "Vietnamese VISCII decoding table.")
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53
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54 (defvar viet-viscii-encode-table
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55 (let ((table-lower (make-vector 128 0))
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56 (table-upper (make-vector 128 0))
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57 (i 0)
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58 char-component)
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59 (while (< i 256)
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60 (setq char-component
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61 (split-char (aref viet-viscii-decode-table i)))
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62 (cond ((eq (car char-component) 'vietnamese-viscii-lower)
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63 (aset table-lower (nth 1 char-component) i))
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64 ((eq (car char-component) 'vietnamese-viscii-upper)
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65 (aset table-upper (nth 1 char-component) i)))
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66 (setq i (1+ i)))
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67 (cons table-lower table-upper))
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68 "Vietnamese VISCII encoding table.
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69 Cons of tables for encoding lower-case chars and upper-case characters.
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70 Both tables are indexed by the position code of Vietnamese characters.")
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71
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72 (defvar viet-vscii-decode-table
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73 [;; VSCII is a full 8-bit code.
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74 0 ?,2z(B ?,2x(B 3 ?,2W(B ?,2X(B ?,2f(B 7 8 9 10 11 12 13 14 15
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75 16 ?,2Q(B ?,2_(B ?,2O(B ?,2V(B ?,2[(B ?,2}(B ?,2\(B 24 25 26 27 28 29 30 31
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76 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
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77 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
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78 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
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79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
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80 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
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81 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
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82 ?,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
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83 ?,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
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84 160 ?,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
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85 192 193 194 195 196 ?,1`(B ?,1d(B ?,1c(B ?,1a(B ?,1U(B ?,2F(B ?,1"(B ?,1F(B ?,1G(B ?,1!(B ?,2G(B
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86 ?,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
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87 ?,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
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88 ?,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
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89 ?,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]
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90 "Vietnamese VSCII decoding table.")
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91
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92 (defvar viet-vscii-encode-table
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93 (let ((table-lower (make-vector 128 0))
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94 (table-upper (make-vector 128 0))
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95 (i 0)
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96 char-component)
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97 (while (< i 256)
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98 (setq char-component
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99 (split-char (aref viet-vscii-decode-table i)))
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100 (cond ((eq (car char-component) 'vietnamese-viscii-lower)
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101 (aset table-lower (nth 1 char-component) i))
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102 ((eq (car char-component) 'vietnamese-viscii-upper)
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103 (aset table-upper (nth 1 char-component) i)))
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104 (setq i (1+ i)))
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105 (cons table-lower table-upper))
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106 "Vietnamese VSCII encoding table.
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107 Cons of tables for encoding lower-case chars and upper-case characters.
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108 Both tables are indexed by the position code of Vietnamese characters.")
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109
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110 )
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111
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112 (define-ccl-program ccl-decode-viscii
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113 `(3
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114 ((read r0)
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115 (loop
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116 (write-read-repeat r0 ,viet-viscii-decode-table))
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117 ))
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118 "CCL program to decode VISCII 1.1")
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119
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120 ;; Multibyte form of a Vietnamese character is as follows (3-byte):
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121 ;; LEADING-CODE-PRIVATE-11 LEADING-CODE-EXTENDED-11 POSITION-CODE
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122 ;; where LEADING-CODE-EXTENDED-11 for Vietnamese is
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123 ;; `vietnamese-viscii-lower' or `vietnamese-viscii-upper'.
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124
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125 (defvar leading-code-private-11 #x9E)
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126
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127 (define-ccl-program ccl-encode-viscii
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128 `(1
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129 ((read r0)
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130 (loop
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131 (if (r0 < 128)
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132 ;; ASCII
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133 (write-read-repeat r0)
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134 ;; not ASCII
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135 (if (r0 != ,leading-code-private-11)
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136 ;; not Vietnamese
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137 (write-read-repeat r0)
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138 ((read-if (r0 == ,(charset-id 'vietnamese-viscii-lower))
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139 (;; Vietnamese lower
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140 (read r0)
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141 (r0 -= 128)
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142 (write-read-repeat r0 ,(car viet-viscii-encode-table)))
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143 (if (r0 == ,(charset-id 'vietnamese-viscii-upper))
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144 (;; Vietnamese upper
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145 (read r0)
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146 (r0 -= 128)
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147 (write-read-repeat r0 ,(cdr viet-viscii-encode-table)))
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148 ;; not Vietnamese
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149 (write-read-repeat r0)))))))))
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150 "CCL program to encode VISCII 1.1")
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151
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152 (define-ccl-program ccl-encode-viscii-font
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153 `(0
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154 ;; In: R0:vietnamese-viscii-lower/vietnamese-viscii-upper
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155 ;; R1:position code
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156 ;; Out: R1:font code point
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157 (if (r0 == ,(charset-id 'vietnamese-viscii-lower))
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158 (r1 = r1 ,(car viet-viscii-encode-table))
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159 (r1 = r1 ,(cdr viet-viscii-encode-table)))
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160 )
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161 "CCL program to encode Vietnamese chars to VISCII 1.1 font")
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162
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163 (define-ccl-program ccl-decode-vscii
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164 `(3
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165 ((read r0)
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166 (loop
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167 (write-read-repeat r0 ,viet-vscii-decode-table))
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168 ))
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169 "CCL program to decode VSCII-1.")
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170
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171 (define-ccl-program ccl-encode-vscii
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172 `(1
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173 ((read r0)
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174 (loop
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175 (if (r0 < 128)
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176 ;; ASCII
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177 (write-read-repeat r0)
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178 ;; not ASCII
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179 (if (r0 != ,leading-code-private-11)
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180 ;; not Vietnamese
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181 (write-read-repeat r0)
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182 (read-if (r0 == ,(charset-id 'vietnamese-viscii-lower))
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183 (;; Vietnamese lower
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184 (read r0)
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185 (r0 -= 128)
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186 (write-read-repeat r0 ,(car viet-vscii-encode-table)))
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187 (if (r0 == ,(charset-id 'vietnamese-viscii-upper))
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188 (;; Vietnamese upper
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189 (read r0)
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190 (r0 -= 128)
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191 (write-read-repeat r0 ,(cdr viet-vscii-encode-table)))
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192 ;; not Vietnamese
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193 (write-read-repeat r0))))))))
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194 "CCL program to encode VSCII-1.")
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195
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196 (define-ccl-program ccl-encode-vscii-font
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197 `(0
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198 ;; In: R0:vietnamese-viscii-lower/vietnamese-viscii-upper
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199 ;; R1:position code
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200 ;; Out: R1:font code point
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201 (if (r0 == ,(charset-id 'vietnamese-viscii-lower))
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202 (r1 = r1 ,(car viet-vscii-encode-table))
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203 (r1 = r1 ,(cdr viet-vscii-encode-table)))
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204 )
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205 "CCL program to encode Vietnamese chars to VSCII-1 font.")
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206
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207
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208 (make-coding-system
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209 'viscii 'ccl
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210 "Coding-system used for VISCII 1.1."
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211 `(mnemonic "VISCII"
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444
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212 decode ccl-decode-viscii
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213 encode ccl-encode-viscii))
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428
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214
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215 ;; it is not correct, but XEmacs doesn't have `ccl' category...
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216 (coding-system-put 'viscii 'category 'iso-8-1)
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217
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218 ;; (make-coding-system
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219 ;; 'vietnamese-viscii 4 ?V
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220 ;; "8-bit encoding for Vietnamese VISCII 1.1 (MIME:VISCII)"
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221 ;; '(ccl-decode-viscii . ccl-encode-viscii)
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222 ;; '((safe-charsets ascii vietnamese-viscii-lower vietnamese-viscii-upper)
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223 ;; (mime-charset . viscii)
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224 ;; (valid-codes (0 . 255))))
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225
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226 ;; (define-coding-system-alias 'viscii 'vietnamese-viscii)
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227
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228 (make-coding-system
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229 'vscii 'ccl
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230 "Coding-system used for VSCII 1.1."
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231 `(mnemonic "VSCII"
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444
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232 decode ccl-decode-vscii
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233 encode ccl-encode-vscii))
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428
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234
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235 ;; (make-coding-system
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236 ;; 'vietnamese-vscii 4 ?v
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237 ;; "8-bit encoding for Vietnamese VSCII-1"
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238 ;; '(ccl-decode-vscii . ccl-encode-vscii)
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239 ;; '((safe-charsets ascii vietnamese-viscii-lower vietnamese-viscii-upper)
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240 ;; (valid-codes (0 . 255))))
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241
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242 ;; (define-coding-system-alias 'vscii 'vietnamese-vscii)
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243
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244 (make-coding-system
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245 'viqr 'no-conversion
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246 "Coding-system used for VIQR."
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247 '(mnemonic "VIQR"
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248 eol-type lf
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249 post-read-conversion viqr-post-read-conversion
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250 pre-write-conversion viqr-pre-write-conversion))
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251
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252 ;; (make-coding-system
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253 ;; 'vietnamese-viqr 0 ?q
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254 ;; "Vietnamese latin transcription (VIQR)"
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255 ;; nil
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256 ;; '((safe-charsets ascii vietnamese-viscii-lower vietnamese-viscii-upper)
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257 ;; (post-read-conversion . viqr-post-read-conversion)
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258 ;; (pre-write-conversion . viqr-pre-write-conversion)
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259 ;; (charset-origin-alist
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260 ;; (vietnamese-viscii-lower "VISCII" viet-encode-viscii-char)
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261 ;; (vietnamese-viscii-upper "VISCII" viet-encode-viscii-char))))
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262
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263 ;; (define-coding-system-alias 'viqr 'vietnamese-viqr)
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264
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265 ;; For VISCII users
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266 (set-charset-ccl-program 'vietnamese-viscii-lower
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444
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267 'ccl-encode-viscii-font)
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428
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268 (set-charset-ccl-program 'vietnamese-viscii-upper
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444
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269 'ccl-encode-viscii-font)
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428
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270 ;; For VSCII users
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444
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271 (set-charset-ccl-program 'vietnamese-viscii-lower 'ccl-encode-vscii-font)
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272 (set-charset-ccl-program 'vietnamese-viscii-upper 'ccl-encode-vscii-font)
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428
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273
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274 ;; (setq font-ccl-encoder-alist
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275 ;; (cons (cons "viscii" ccl-encode-viscii-font) font-ccl-encoder-alist))
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276
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277 ;; (setq font-ccl-encoder-alist
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278 ;; (cons (cons "vscii" ccl-encode-vscii-font) font-ccl-encoder-alist))
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279
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280 ;; (defvar viet-viscii-nonascii-translation-table
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281 ;; (make-translation-table-from-vector viet-viscii-decode-table)
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282 ;; "Value of `nonascii-translation-table' in Vietnamese language environment.")
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283
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284 (set-language-info-alist
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285 "Vietnamese" '((charset vietnamese-viscii-lower vietnamese-viscii-upper)
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286 (coding-system viscii vscii viqr)
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287 (coding-priority viscii)
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288 (input-method . "vietnamese-viqr")
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289 (features viet-util)
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290 (sample-text . "Vietnamese (Ti,1*(Bng Vi,1.(Bt) Ch,1`(Bo b,1U(Bn")
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291 (documentation . "\
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440
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292 For Vietnamese, Emacs uses special charsets internally.
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428
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293 They can be decoded from and encoded to VISCC, VSCII, and VIQR.
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294 Current setting put higher priority to the coding system VISCII than VSCII.
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295 If you prefer VSCII, please do: (prefer-coding-system 'vietnamese-vscii)")
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296 ))
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297
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298 ;;; vietnamese.el ends here
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