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Diffstat (limited to 'i18npool/source/inputchecker/inputsequencechecker_th.cxx')
| -rw-r--r-- | i18npool/source/inputchecker/inputsequencechecker_th.cxx | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/i18npool/source/inputchecker/inputsequencechecker_th.cxx b/i18npool/source/inputchecker/inputsequencechecker_th.cxx new file mode 100644 index 000000000..c6d6f349d --- /dev/null +++ b/i18npool/source/inputchecker/inputsequencechecker_th.cxx @@ -0,0 +1,144 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + + +#include <inputsequencechecker_th.hxx> +#include <wtt.h> + + +namespace i18npool { + +InputSequenceChecker_th::InputSequenceChecker_th() + : InputSequenceCheckerImpl("com.sun.star.i18n.InputSequenceChecker_th") +{ +} + +InputSequenceChecker_th::~InputSequenceChecker_th() +{ +} + +/* Table for Thai Cell Manipulation */ +char const TAC_celltype_inputcheck[17][17] = { +/* Cn */ /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F */ +/* Cn-1 00 */{ 'X', 'A', 'A', 'A', 'A', 'A', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* 10 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* 20 */{ 'X', 'A', 'A', 'A', 'A', 'S', 'A', 'C', 'C', 'C', 'C', 'C', 'C', 'C', 'C', 'C', 'C' }, + /* 30 */{ 'X', 'S', 'A', 'S', 'S', 'S', 'S', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* 40 */{ 'X', 'A', 'A', 'A', 'A', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* 50 */{ 'X', 'A', 'A', 'A', 'A', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* 60 */{ 'X', 'A', 'A', 'A', 'S', 'A', 'S', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* 70 */{ 'X', 'A', 'A', 'A', 'A', 'S', 'A', 'R', 'R', 'R', 'C', 'C', 'R', 'R', 'R', 'R', 'R' }, + /* 80 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* 90 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* A0 */{ 'X', 'A', 'A', 'A', 'A', 'A', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* B0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* C0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* D0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R' }, + /* E0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'C', 'R', 'R', 'R', 'R', 'R' }, + /* F0 */{ 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'R', 'R', 'R', 'R', 'R', 'R' }, + { 'X', 'A', 'A', 'A', 'S', 'S', 'A', 'R', 'R', 'R', 'C', 'R', 'C', 'R', 'R', 'R', 'R' } +}; + +bool const TAC_Composible[3][5] = { + /* 'A', 'C', 'S', 'R', 'X' */ +/* Mode 0 */ {true, true, true, true, true}, // PASSTHROUGH = 0 +/* Mode 1 */ {true, true, true, false, true}, // BASIC = 1 +/* Mode 2 */ {true, true, false, false, true} // STRICT = 2 +}; + +static bool check(sal_Unicode ch1, sal_Unicode ch2, sal_Int16 inputCheckMode) +{ + sal_Int16 composible_class; + switch (TAC_celltype_inputcheck[getCharType(ch1)][getCharType(ch2)]) { + case 'A': composible_class = 0; break; + case 'C': composible_class = 1; break; + case 'S': composible_class = 2; break; + case 'R': composible_class = 3; break; + case 'X': composible_class = 4; break; + default: composible_class = 0; + } + return (TAC_Composible[inputCheckMode][composible_class]); +} + +sal_Bool SAL_CALL +InputSequenceChecker_th::checkInputSequence(const OUString& Text, sal_Int32 nStartPos, + sal_Unicode inputChar, sal_Int16 inputCheckMode) +{ + return check(Text[nStartPos], inputChar, inputCheckMode); +} + +sal_Int32 SAL_CALL +InputSequenceChecker_th::correctInputSequence(OUString& Text, + sal_Int32 nStartPos, + sal_Unicode inputChar, + sal_Int16 inputCheckMode) +{ +/* 9 rules for input sequence correction, see issue i42661 for detail, + +https://bz.apache.org/ooo/show_bug.cgi?id=42661 + +<abv> = <av1>|<av2>|<av3>|<bv1>|<bv2> +<abv1> = <av1>|<bv1> +<thanthakhat> = 0E4C (karan) + +1. <cons> <abv>_x + <abv>_y => <cons> <abv>_y (replace) +2. <cons> <tone>_x + <tone>_y => <cons> <tone>_y (replace) +3. <cons> <abv> <tone>_x + <tone>_y => <cons> <abv> <tone>_y (replace) +4. <cons> <abv>_x <tone> + <abv>_y => <cons> <abv>_y <tone> (replace, reorder) +5. <cons> <tone> + <abv> => <cons> <abv> <tone> (reorder) +6. <cons> <fv1> + <tone> => <cons> <tone> <fv1> (reorder) +7. <cons> <tone>_x <fv1> + <tone>_y => <cons> <tone>_y <fv1> (replace, reorder) +8. <cons> <thanthakhat> + <abv1> => <cons> <abv1> <thanthakhat> (reorder) +9. <cons> <abv1>_x <thanthakhat> + <abv1>_y => <cons> <abv1>_y <thanthakhat>(reorder, replace) +*/ +#define CT_ABV(t) ( (t>=CT_AV1 && t<=CT_AV3) || t==CT_BV1 || t==CT_BV2) +#define CT_ABV1(t) (t==CT_AV1 || t==CT_BV1) + + if (check(Text[nStartPos], inputChar, inputCheckMode)) + Text = Text.replaceAt(++nStartPos, 0, rtl::OUStringChar(inputChar)); + else if (nStartPos > 0 && getCharType(Text[nStartPos-1]) == CT_CONS) { + sal_uInt16 t1=getCharType(Text[nStartPos]), t2=getCharType(inputChar); + if ( (CT_ABV(t1) && CT_ABV(t2)) || // 1. + (t1==CT_TONE && t2==CT_TONE) )// 2. + Text = Text.replaceAt(nStartPos, 1, rtl::OUStringChar(inputChar)); + else if ( (t1==CT_TONE && CT_ABV(t2)) || // 5. + (t1==CT_FV1 && t2==CT_TONE) || // 6. + (Text[nStartPos]==0x0E4C && CT_ABV1(t2)) ) // 8. + Text = Text.replaceAt(nStartPos++, 0, rtl::OUStringChar(inputChar)); + else + nStartPos=Text.getLength(); + } else if (nStartPos > 1 && getCharType(Text[nStartPos-2]) == CT_CONS) { + sal_uInt16 t1=getCharType(Text[nStartPos-1]), t2=getCharType(Text[nStartPos]), t3=getCharType(inputChar); + if (CT_ABV(t1) && t2==CT_TONE && t3==CT_TONE) // 3. + Text = Text.replaceAt(nStartPos, 1, rtl::OUStringChar(inputChar)); + else if ( (CT_ABV(t1) && t2==CT_TONE && CT_ABV(t3)) || // 4. + (t1==CT_TONE && t2==CT_FV1 && t3==CT_TONE) || // 7. + (CT_ABV1(t1) && Text[nStartPos]==0x0E4C && CT_ABV1(t3)) ) // 9. + Text = Text.replaceAt(nStartPos-1, 1, rtl::OUStringChar(inputChar)); + else + nStartPos=Text.getLength(); + } else + nStartPos=Text.getLength(); + + return nStartPos; +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |