Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 441 insertions, 0 deletions

diff --git a/i18npool/source/inputchecker/inputsequencechecker.cxx b/i18npool/source/inputchecker/inputsequencechecker.cxx
new file mode 100644
index 000000000..ff1ea652f
--- /dev/null
+++ b/i18npool/source/inputchecker/inputsequencechecker.cxx
@@ -0,0 +1,161 @@
+/* -*- 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.hxx>
+#include <com/sun/star/i18n/InputSequenceCheckMode.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <i18nutil/unicode.hxx>
+
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::i18n;
+using namespace ::com::sun::star::lang;
+
+namespace i18npool {
+
+InputSequenceCheckerImpl::InputSequenceCheckerImpl( const Reference < XComponentContext >& rxContext ) : m_xContext( rxContext )
+{
+    serviceName = "com.sun.star.i18n.InputSequenceChecker";
+}
+
+InputSequenceCheckerImpl::InputSequenceCheckerImpl(const char *pServiceName)
+    : serviceName(pServiceName)
+{
+}
+
+InputSequenceCheckerImpl::~InputSequenceCheckerImpl()
+{
+}
+
+sal_Bool SAL_CALL
+InputSequenceCheckerImpl::checkInputSequence(const OUString& Text, sal_Int32 nStartPos,
+        sal_Unicode inputChar, sal_Int16 inputCheckMode)
+{
+    if (inputCheckMode == InputSequenceCheckMode::PASSTHROUGH)
+        return true;
+
+    char* language = getLanguageByScripType(Text[nStartPos], inputChar);
+
+    if (language)
+        return getInputSequenceChecker(language)->checkInputSequence(Text, nStartPos, inputChar, inputCheckMode);
+    else
+        return true; // not a checkable languages.
+}
+
+sal_Int32 SAL_CALL
+InputSequenceCheckerImpl::correctInputSequence(OUString& Text, sal_Int32 nStartPos,
+        sal_Unicode inputChar, sal_Int16 inputCheckMode)
+{
+    if (inputCheckMode != InputSequenceCheckMode::PASSTHROUGH) {
+        char* language = getLanguageByScripType(Text[nStartPos], inputChar);
+
+        if (language)
+            return getInputSequenceChecker(language)->correctInputSequence(Text, nStartPos, inputChar, inputCheckMode);
+    }
+    Text = Text.replaceAt(++nStartPos, 0, rtl::OUStringChar(inputChar));
+    return nStartPos;
+}
+
+ScriptTypeList const typeList[] = {
+    //{ UnicodeScript_kHebrew,              UnicodeScript_kHebrew },        // 10,
+    //{ UnicodeScript_kArabic,              UnicodeScript_kArabic },        // 11,
+    { UnicodeScript_kDevanagari,  UnicodeScript_kDevanagari,    sal_Int16(UnicodeScript_kDevanagari) },    // 14,
+    { UnicodeScript_kThai,        UnicodeScript_kThai,          sal_Int16(UnicodeScript_kThai) },          // 24,
+
+    { UnicodeScript_kScriptCount, UnicodeScript_kScriptCount,   sal_Int16(UnicodeScript_kScriptCount) }    // 88
+};
+
+char*
+InputSequenceCheckerImpl::getLanguageByScripType(sal_Unicode cChar, sal_Unicode nChar)
+{
+    css::i18n::UnicodeScript type = static_cast<css::i18n::UnicodeScript>(unicode::getUnicodeScriptType( cChar, typeList, sal_Int16(UnicodeScript_kScriptCount) ));
+
+    if (type != UnicodeScript_kScriptCount &&
+            type == static_cast<css::i18n::UnicodeScript>(unicode::getUnicodeScriptType( nChar, typeList, sal_Int16(UnicodeScript_kScriptCount) ))) {
+        switch(type) {
+            case UnicodeScript_kThai:           return const_cast<char*>("th");
+                                                //case UnicodeScript_kArabic:       return (char*)"ar";
+                                                //case UnicodeScript_kHebrew:       return (char*)"he";
+            case UnicodeScript_kDevanagari:   return const_cast<char*>("hi");
+            default: break;
+        }
+    }
+    return nullptr;
+}
+
+Reference< XExtendedInputSequenceChecker >&
+InputSequenceCheckerImpl::getInputSequenceChecker(char const * rLanguage)
+{
+    if (cachedItem && cachedItem->aLanguage == rLanguage) {
+        return cachedItem->xISC;
+    }
+    else {
+        for (const auto& l : lookupTable) {
+            cachedItem = l;
+            if (cachedItem->aLanguage == rLanguage)
+                return cachedItem->xISC;
+        }
+
+        Reference < XInterface > xI = m_xContext->getServiceManager()->createInstanceWithContext(
+                "com.sun.star.i18n.InputSequenceChecker_" +
+                OUString::createFromAscii(rLanguage),
+                m_xContext);
+
+        if ( xI.is() ) {
+            Reference< XExtendedInputSequenceChecker > xISC( xI, UNO_QUERY );
+            if (xISC.is()) {
+                lookupTable.emplace_back(rLanguage, xISC);
+                cachedItem = lookupTable.back();
+                return cachedItem->xISC;
+            }
+        }
+    }
+    throw RuntimeException();
+}
+
+OUString SAL_CALL
+InputSequenceCheckerImpl::getImplementationName()
+{
+    return OUString::createFromAscii(serviceName);
+}
+
+sal_Bool SAL_CALL
+InputSequenceCheckerImpl::supportsService(const OUString& rServiceName)
+{
+    return cppu::supportsService(this, rServiceName);
+}
+
+Sequence< OUString > SAL_CALL
+InputSequenceCheckerImpl::getSupportedServiceNames()
+{
+    Sequence< OUString > aRet { OUString::createFromAscii(serviceName) };
+    return aRet;
+}
+
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
+com_sun_star_i18n_InputSequenceChecker_get_implementation(
+    css::uno::XComponentContext *context,
+    css::uno::Sequence<css::uno::Any> const &)
+{
+    return cppu::acquire(new i18npool::InputSequenceCheckerImpl(context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/i18npool/source/inputchecker/inputsequencechecker_hi.cxx b/i18npool/source/inputchecker/inputsequencechecker_hi.cxx
new file mode 100644
index 000000000..b1f9e99f6
--- /dev/null
+++ b/i18npool/source/inputchecker/inputsequencechecker_hi.cxx
@@ -0,0 +1,136 @@
+/* -*- 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_hi.hxx>
+
+
+namespace i18npool {
+
+InputSequenceChecker_hi::InputSequenceChecker_hi()
+    : InputSequenceCheckerImpl("com.sun.star.i18n.InputSequenceChecker_hi")
+{
+}
+
+InputSequenceChecker_hi::~InputSequenceChecker_hi()
+{
+}
+/* Non-Defined Class type */
+#define ND_        0
+
+/*
+ * Devanagari character type definitions
+ */
+#define UP_  1  // ChandraBindu & Anuswar
+#define NP_  2  // Visarg
+#define IV_    3  // Independent Vowels
+#define CN_    4  // Consonants except _CK & _RC
+#define CK_    5  // Consonants that can be followed by Nukta
+#define RC_    6  // Ra
+#define NM_    7  // Matra
+#define RM_    8  // Ra + HAL
+#define IM_    9  // Choti I Matra
+#define HL_    10 // HAL
+#define NK_    11 // Nukta
+#define VD_    12 // Vedic
+#define HD_    13 // Hindu Numerals
+
+/*
+ * Devanagari character type table
+ */
+const sal_uInt16 devaCT[128] = {
+/*         0,    1,    2,    3,    4,    5,    6,    7,
+           8,    9,    A,    B,    C,    D,    E,    F, */
+/* 0900 */ ND_, UP_, UP_, NP_, ND_, IV_, IV_, IV_,
+           IV_, IV_, IV_, IV_, IV_, IV_, IV_, IV_,
+/* 0910 */ IV_, IV_, IV_, IV_, IV_, CK_, CK_, CK_,
+           CN_, CN_, CN_, CN_, CK_, CN_, CN_, CN_,
+/* 0920 */ CN_, CK_, CK_, CN_, CN_, CN_, CN_, CN_,
+           CN_, CN_, CN_, CK_, CN_, CN_, CN_, CN_,
+/* 0930 */ RC_, CN_, CN_, CN_, CN_, CN_, CN_, CN_,
+           CN_, CN_, ND_, ND_, NK_, VD_, NM_, IM_,
+/* 0940 */ RM_, NM_, NM_, NM_, NM_, RM_, RM_, RM_,
+           RM_, RM_, RM_, RM_, RM_, HL_, ND_, ND_,
+/* 0950 */ ND_, VD_, VD_, VD_, VD_, ND_, ND_, ND_,
+           CN_, CN_, CN_, CN_, CN_, CN_, CN_, CN_,
+/* 0960 */ IV_, IV_, NM_, NM_, ND_, ND_, HD_, HD_,
+           HD_, HD_, HD_, HD_, HD_, HD_, HD_, HD_,
+/* 0970 */ ND_, ND_, ND_, ND_, ND_, ND_, ND_, ND_,
+           ND_, ND_, ND_, ND_, ND_, ND_, ND_, ND_,
+};
+
+/*
+ * Devanagari character composition table
+ */
+const sal_uInt16 dev_cell_check[14][14] = {
+  /*        ND, UP, NP, IV, CN, CK, RC, NM, RM, IM, HL, NK, VD, HD, */
+  /* 0  */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* ND */
+  /* 1  */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* UP */
+  /* 2  */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* NP */
+  /* 3  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* IV */
+  /* 4  */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0 }, /* CN */
+  /* 5  */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  1,  0,  0 }, /* CK */
+  /* 6  */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0 }, /* RC */
+  /* 7  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* NM */
+  /* 8  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* RM */
+  /* 9  */ { 0,  1,  1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* IM */
+  /* 10 */ { 0,  0,  0,  0,  1,  1,  1,  0,  0,  0,  0,  0,  0,  0 }, /* HL */
+  /* 11 */ { 0,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0 }, /* NK */
+  /* 12 */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }, /* VD */
+  /* 13 */ { 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 }  /* HD */
+};
+
+bool const DEV_Composible[2][2] = {
+/* Mode 0 */    {true, true }, // PASSTHROUGH = 0
+/* Mode 1 */    {false, true}  // STRICT = 1
+};
+
+static constexpr sal_uInt16 getCharType(sal_Unicode x)
+{
+    return (x >= 0x0900 && x < 0x097f) ? devaCT[x - 0x0900] : ND_;
+}
+
+sal_Bool SAL_CALL
+InputSequenceChecker_hi::checkInputSequence(const OUString& Text,
+                                            sal_Int32       nStartPos,
+                                            sal_Unicode     inputChar,
+                                            sal_Int16       inputCheckMode)
+{
+    sal_Unicode currentChar = Text[nStartPos];
+    sal_uInt16  ch1 = getCharType(inputChar);
+    sal_uInt16  ch2 = getCharType(currentChar);
+
+    return (DEV_Composible[inputCheckMode][dev_cell_check[ch2][ch1]]);
+}
+
+sal_Int32 SAL_CALL
+InputSequenceChecker_hi::correctInputSequence(OUString& Text,
+                                            sal_Int32       nStartPos,
+                                            sal_Unicode     inputChar,
+                                            sal_Int16       inputCheckMode)
+{
+    if (checkInputSequence(Text, nStartPos, inputChar, inputCheckMode))
+        Text = Text.replaceAt(++nStartPos, 0, rtl::OUStringChar(inputChar));
+    else
+        nStartPos=Text.getLength();
+    return nStartPos;
+}
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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: */