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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 :
21 : #include <inputsequencechecker_th.hxx>
22 : #include <wtt.h>
23 :
24 : using ::rtl::OUString;
25 :
26 : namespace com { namespace sun { namespace star { namespace i18n {
27 :
28 0 : InputSequenceChecker_th::InputSequenceChecker_th()
29 : {
30 0 : serviceName = "com.sun.star.i18n.InputSequenceChecker_th";
31 0 : }
32 :
33 0 : InputSequenceChecker_th::~InputSequenceChecker_th()
34 : {
35 0 : }
36 :
37 : /* Table for Thai Cell Manipulation */
38 : sal_Char _TAC_celltype_inputcheck[17][17] = {
39 : /* Cn */ /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F */
40 : /* Cn-1 00 */{ 'X', 'A', 'A', 'A', 'A', 'A', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
41 : /* 10 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
42 : /* 20 */{ 'X', 'A', 'A', 'A', 'A', 'S', 'A', 'C', 'C', 'C', 'C', 'C', 'C', 'C', 'C', 'C', 'C' },
43 : /* 30 */{ 'X', 'S', 'A', 'S', 'S', 'S', 'S', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
44 : /* 40 */{ 'X', 'A', 'A', 'A', 'A', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
45 : /* 50 */{ 'X', 'A', 'A', 'A', 'A', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
46 : /* 60 */{ 'X', 'A', 'A', 'A', 'S', 'A', 'S', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
47 : /* 70 */{ 'X', 'A', 'A', 'A', 'A', 'S', 'A', 'R', 'R', 'R', 'C', 'C', 'R', 'R', 'R', 'R', 'R' },
48 : /* 80 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'R', 'R', 'R', 'R', 'R', 'R' },
49 : /* 90 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
50 : /* A0 */{ 'X', 'A', 'A', 'A', 'A', 'A', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
51 : /* B0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
52 : /* C0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
53 : /* D0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' },
54 : /* E0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'C', 'R', 'R', 'R', 'R', 'R' },
55 : /* F0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'R', 'R', 'R', 'R', 'R', 'R' },
56 : { 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'R', 'C', 'R', 'R', 'R', 'R' }
57 : };
58 :
59 : sal_Bool _TAC_Composible[3][5] = {
60 : /* 'A', 'C', 'S', 'R', 'X' */
61 : /* Mode 0 */ {sal_True, sal_True, sal_True, sal_True, sal_True}, // PASSTHROUGH = 0
62 : /* Mode 1 */ {sal_True, sal_True, sal_True, sal_False, sal_True}, // BASIC = 1
63 : /* Mode 2 */ {sal_True, sal_True, sal_False, sal_False, sal_True} // STRICT = 2
64 : };
65 :
66 0 : static sal_Bool SAL_CALL check(sal_Unicode ch1, sal_Unicode ch2, sal_Int16 inputCheckMode)
67 : {
68 : sal_Int16 composible_class;
69 0 : switch (_TAC_celltype_inputcheck[getCharType(ch1)][getCharType(ch2)]) {
70 0 : case 'A': composible_class = 0; break;
71 0 : case 'C': composible_class = 1; break;
72 0 : case 'S': composible_class = 2; break;
73 0 : case 'R': composible_class = 3; break;
74 0 : case 'X': composible_class = 4; break;
75 0 : default: composible_class = 0;
76 : }
77 0 : return (_TAC_Composible[inputCheckMode][composible_class]);
78 : }
79 :
80 : sal_Bool SAL_CALL
81 0 : InputSequenceChecker_th::checkInputSequence(const OUString& Text, sal_Int32 nStartPos,
82 : sal_Unicode inputChar, sal_Int16 inputCheckMode) throw(com::sun::star::uno::RuntimeException)
83 : {
84 0 : return check(Text[nStartPos], inputChar, inputCheckMode);
85 : }
86 :
87 : sal_Int32 SAL_CALL
88 0 : InputSequenceChecker_th::correctInputSequence(OUString& Text,
89 : sal_Int32 nStartPos,
90 : sal_Unicode inputChar,
91 : sal_Int16 inputCheckMode)
92 : throw(com::sun::star::uno::RuntimeException)
93 : {
94 : /* 9 rules for input sequence correction, see issue i42661 for detail,
95 :
96 : http://www.openoffice.org/issues/show_bug.cgi?id=42661
97 :
98 : <abv> = <av1>|<av2>|<av3>|<bv1>|<bv2>
99 : <abv1> = <av1>|<bv1>
100 : <thanthakhat> = 0E4C (karan)
101 :
102 : 1. <cons> <abv>_x + <abv>_y => <cons> <abv>_y (replace)
103 : 2. <cons> <tone>_x + <tone>_y => <cons> <tone>_y (replace)
104 : 3. <cons> <abv> <tone>_x + <tone>_y => <cons> <abv> <tone>_y (replace)
105 : 4. <cons> <abv>_x <tone> + <abv>_y => <cons> <abv>_y <tone> (replace, reorder)
106 : 5. <cons> <tone> + <abv> => <cons> <abv> <tone> (reorder)
107 : 6. <cons> <fv1> + <tone> => <cons> <tone> <fv1> (reorder)
108 : 7. <cons> <tone>_x <fv1> + <tone>_y => <cons> <tone>_y <fv1> (replace, reorder)
109 : 8. <cons> <thanthakhat> + <abv1> => <cons> <abv1> <thanthakhat> (reorder)
110 : 9. <cons> <abv1>_x <thanthakhat> + <abv1>_y => <cons> <abv1>_y <thanthakhat>(reorder, replace)
111 : */
112 : #define CT_ABV(t) ( (t>=CT_AV1 && t<=CT_AV3) || t==CT_BV1 || t==CT_BV2)
113 : #define CT_ABV1(t) (t==CT_AV1 || t==CT_BV1)
114 :
115 0 : if (check(Text[nStartPos], inputChar, inputCheckMode))
116 0 : Text = Text.replaceAt(++nStartPos, 0, OUString(inputChar));
117 0 : else if (nStartPos > 0 && getCharType(Text[nStartPos-1]) == CT_CONS) {
118 0 : sal_uInt16 t1=getCharType(Text[nStartPos]), t2=getCharType(inputChar);
119 0 : if ( (CT_ABV(t1) && CT_ABV(t2)) || // 1.
120 : (t1==CT_TONE && t2==CT_TONE) )// 2.
121 0 : Text = Text.replaceAt(nStartPos, 1, OUString(inputChar));
122 0 : else if ( (t1==CT_TONE && CT_ABV(t2)) || // 5.
123 : (t1==CT_FV1 && t2==CT_TONE) || // 6.
124 0 : (Text[nStartPos]==0x0E4C && CT_ABV1(t2)) ) // 8.
125 0 : Text = Text.replaceAt(nStartPos++, 0, OUString(inputChar));
126 : else
127 0 : nStartPos=Text.getLength();
128 0 : } else if (nStartPos > 1 && getCharType(Text[nStartPos-2]) == CT_CONS) {
129 0 : sal_uInt16 t1=getCharType(Text[nStartPos-1]), t2=getCharType(Text[nStartPos]), t3=getCharType(inputChar);
130 0 : if (CT_ABV(t1) && t2==CT_TONE && t3==CT_TONE) // 3.
131 0 : Text = Text.replaceAt(nStartPos, 1, OUString(inputChar));
132 0 : else if ( (CT_ABV(t1) && t2==CT_TONE && CT_ABV(t3)) || // 4.
133 : (t1==CT_TONE && t2==CT_FV1 && t3==CT_TONE) || // 7.
134 0 : (CT_ABV1(t1) && Text[nStartPos]==0x0E4C && CT_ABV1(t3)) ) // 9.
135 0 : Text = Text.replaceAt(nStartPos-1, 1, OUString(inputChar));
136 : else
137 0 : nStartPos=Text.getLength();
138 : } else
139 0 : nStartPos=Text.getLength();
140 :
141 0 : return nStartPos;
142 : }
143 :
144 : } } } }
145 :
146 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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