Cppcheck report - LibreOffice 2020-06-13 19:58:00 41c465b5ee443ec04441077b5eb80f263336ea8a, CppCheck 2020-06-13 18:19:47 6d5d12f283cf568d2dfe09aa77cb41f34b322d62: i18npool/source/nativenumber/nativenumbersupplier.cxx

/* -*- 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 <i18nlangtag/languagetag.hxx>
#include <i18nlangtag/mslangid.hxx>
#include <rtl/ustrbuf.hxx>
#include <sal/macros.h>
#include <nativenumbersupplier.hxx>
#include <localedata.hxx>
#include "data/numberchar.h"
#include <comphelper/processfactory.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <map>
#include <memory>
#include <string_view>
#include <unordered_map>
#include <com/sun/star/i18n/CharacterClassification.hpp>
#include <com/sun/star/i18n/NativeNumberMode.hpp>
#include <com/sun/star/linguistic2/NumberText.hpp>

using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::i18n;
using namespace ::com::sun::star::lang;

namespace {

struct Number {
    sal_Int16 number;
    const sal_Unicode *multiplierChar;
    sal_Int16 numberFlag;
    sal_Int16 exponentCount;
    const sal_Int16 *multiplierExponent;
};

}

#define NUMBER_OMIT_ZERO (1 << 0)
#define NUMBER_OMIT_ONLY_ZERO  (1 << 1)
#define NUMBER_OMIT_ONE_1  (1 << 2)
#define NUMBER_OMIT_ONE_2  (1 << 3)
#define NUMBER_OMIT_ONE_3  (1 << 4)
#define NUMBER_OMIT_ONE_4  (1 << 5)
#define NUMBER_OMIT_ONE_5  (1 << 6)
#define NUMBER_OMIT_ONE_6  (1 << 7)
#define NUMBER_OMIT_ONE_7  (1 << 8)
#define NUMBER_OMIT_ONE  (NUMBER_OMIT_ONE_1|NUMBER_OMIT_ONE_2|NUMBER_OMIT_ONE_3|NUMBER_OMIT_ONE_4|NUMBER_OMIT_ONE_5|NUMBER_OMIT_ONE_6|NUMBER_OMIT_ONE_7)
#define NUMBER_OMIT_ONE_CHECK(bit)  (1 << (2 + bit))
#define NUMBER_OMIT_ALL ( NUMBER_OMIT_ZERO|NUMBER_OMIT_ONE|NUMBER_OMIT_ONLY_ZERO )
#define NUMBER_OMIT_ZERO_ONE ( NUMBER_OMIT_ZERO|NUMBER_OMIT_ONE )
#define NUMBER_OMIT_ONE_67 (NUMBER_OMIT_ONE_6|NUMBER_OMIT_ONE_7)
#define NUMBER_OMIT_ZERO_ONE_67 ( NUMBER_OMIT_ZERO|NUMBER_OMIT_ONE_67 )

namespace i18npool {

namespace {

struct theNatNumMutex : public rtl::Static<osl::Mutex, theNatNumMutex> {};

}

static OUString getHebrewNativeNumberString(const OUString& aNumberString, bool useGeresh);

static OUString getCyrillicNativeNumberString(const OUString& aNumberString);

/// @throws RuntimeException
static OUString AsciiToNativeChar( const OUString& inStr, sal_Int32 nCount,
        Sequence< sal_Int32 >& offset, bool useOffset, sal_Int16 number )
{
    const sal_Unicode *src = inStr.getStr();
    rtl_uString *newStr = rtl_uString_alloc(nCount);
    if (useOffset)
        offset.realloc(nCount);

    for (sal_Int32 i = 0; i < nCount; i++)
    {
        sal_Unicode ch = src[i];
        if (isNumber(ch))
            newStr->buffer[i] = NumberChar[number][ ch - NUMBER_ZERO ];
        else if (i+1 < nCount && isNumber(src[i+1])) {
            if (i > 0 && isNumber(src[i-1]) && isSeparator(ch))
                newStr->buffer[i] = SeparatorChar[number] ? SeparatorChar[number] : ch;
            else
                newStr->buffer[i] = isDecimal(ch) ? (DecimalChar[number] ? DecimalChar[number] : ch) :
                    isMinus(ch) ? (MinusChar[number] ? MinusChar[number] : ch) : ch;
        }
        else
            newStr->buffer[i] = ch;
        if (useOffset)
            offset[i] = i;
    }
    return OUString(newStr, SAL_NO_ACQUIRE); // take ownership
}

static bool AsciiToNative_numberMaker(const sal_Unicode *str, sal_Int32 begin, sal_Int32 len,
        sal_Unicode *dst, sal_Int32& count, sal_Int16 multiChar_index, Sequence< sal_Int32 >& offset, bool useOffset, sal_Int32 startPos,
 const Number *number, const sal_Unicode* numberChar)
{
    sal_Unicode multiChar = (multiChar_index == -1 ? 0 : number->multiplierChar[multiChar_index]);
    if ( len <= number->multiplierExponent[number->exponentCount-1] ) {
        if (number->multiplierExponent[number->exponentCount-1] > 1) {
            bool bNotZero = false;
            for (const sal_Int32 end = begin+len; begin < end; begin++) {
                if (bNotZero || str[begin] != NUMBER_ZERO) {
                    dst[count] = numberChar[str[begin] - NUMBER_ZERO];
                    if (useOffset)
                        offset[count] = begin + startPos;
                    count++;
                    bNotZero = true;
                }
            }
            if (bNotZero && multiChar > 0) {
                dst[count] = multiChar;
                if (useOffset)
                    offset[count] = begin + startPos;
                count++;
            }
            return bNotZero;
        } else if (str[begin] != NUMBER_ZERO) {
            if (!(number->numberFlag & (multiChar_index < 0 ? 0 : NUMBER_OMIT_ONE_CHECK(multiChar_index))) || str[begin] != NUMBER_ONE) {
                dst[count] = numberChar[str[begin] - NUMBER_ZERO];
                if (useOffset)
                    offset[count] = begin + startPos;
                count++;
            }
            if (multiChar > 0) {
                dst[count] = multiChar;
                if (useOffset)
                    offset[count] = begin + startPos;
                count++;
            }
        } else if (!(number->numberFlag & NUMBER_OMIT_ZERO) && count > 0 && dst[count-1] != numberChar[0]) {
            dst[count] = numberChar[0];
            if (useOffset)
                offset[count] = begin + startPos;
            count++;
        }
        return str[begin] != NUMBER_ZERO;
    } else {
        bool bPrintPower = false;
        // sal_Int16 last = 0;
        for (sal_Int16 i = 1; i <= number->exponentCount; i++) {
            sal_Int32 tmp = len - (i == number->exponentCount ? 0 : number->multiplierExponent[i]);
            if (tmp > 0) {
                bPrintPower |= AsciiToNative_numberMaker(str, begin, tmp, dst, count,
                        (i == number->exponentCount ? -1 : i), offset, useOffset, startPos, number, numberChar);
                begin += tmp;
                len -= tmp;
            }
        }
        if (bPrintPower) {
            if (count > 0 && number->multiplierExponent[number->exponentCount-1] == 1 &&
                    dst[count-1] == numberChar[0])
                count--;
            if (multiChar > 0) {
                dst[count] = multiChar;
                if (useOffset)
                    offset[count] = begin + startPos;
                count++;
            }
        }
        return bPrintPower;
    }
}

/// @throws RuntimeException
static OUString AsciiToNative( const OUString& inStr, sal_Int32 nCount,
        Sequence< sal_Int32 >& offset, bool useOffset, const Number* number )
{
    OUString aRet;

    sal_Int32 strLen = inStr.getLength();
    const sal_Unicode *numberChar = NumberChar[number->number];

    if (nCount > strLen)
        nCount = strLen;

    if (nCount > 0)
    {
        const sal_Unicode *str = inStr.getStr();
        std::unique_ptr<sal_Unicode[]> newStr(new sal_Unicode[nCount * 2 + 1]);
        std::unique_ptr<sal_Unicode[]> srcStr(new sal_Unicode[nCount + 1]); // for keeping number without comma
        sal_Int32 i, len = 0, count = 0;

        if (useOffset)
            offset.realloc( nCount * 2 );
        bool bDoDecimal = false;

        for (i = 0; i <= nCount; i++)
        {
            if (i < nCount && isNumber(str[i])) {
                if (bDoDecimal) {
                    newStr[count] = numberChar[str[i] - NUMBER_ZERO];
                    if (useOffset)
                        offset[count] = i;
                    count++;
                }
                else
                    srcStr[len++] = str[i];
            } else {
                if (len > 0) {
                    if (i < nCount-1 && isSeparator(str[i]) && isNumber(str[i+1]))
                        continue; // skip comma inside number string
                    bool bNotZero = false;
                    for (sal_Int32 begin = 0, end = len % number->multiplierExponent[0];
                            end <= len; begin = end, end += number->multiplierExponent[0]) {
                        if (end == 0) continue;
                        sal_Int32 _count = count;
                        bNotZero |= AsciiToNative_numberMaker(srcStr.get(), begin, end - begin, newStr.get(), count,
                                end == len ? -1 : 0, offset, useOffset, i - len, number, numberChar);
                        if (count > 0 && number->multiplierExponent[number->exponentCount-1] == 1 &&
                                newStr[count-1] == numberChar[0])
                            count--;
                        if (bNotZero && _count == count && end != len) {
                            newStr[count] = number->multiplierChar[0];
                            if (useOffset)
                                offset[count] = i - len;
                            count++;
                        }
                    }
                    if (! bNotZero && ! (number->numberFlag & NUMBER_OMIT_ONLY_ZERO)) {
                        newStr[count] = numberChar[0];
                        if (useOffset)
                            offset[count] = i - len;
                        count++;
                    }
                    len = 0;
                }
                if (i < nCount) {
                    bDoDecimal = (!bDoDecimal && i < nCount-1 && isDecimal(str[i]) && isNumber(str[i+1]));
                    if (bDoDecimal)
                        newStr[count] = (DecimalChar[number->number] ? DecimalChar[number->number] : str[i]);
                    else if (i < nCount-1 && isMinus(str[i]) && isNumber(str[i+1]))
                        newStr[count] = (MinusChar[number->number] ? MinusChar[number->number] : str[i]);
                    else if (i < nCount-1 && isSeparator(str[i]) && isNumber(str[i+1]))
                        newStr[count] = (SeparatorChar[number->number] ? SeparatorChar[number->number] : str[i]);
                    else
                        newStr[count] = str[i];
                    if (useOffset)
                        offset[count] = i;
                    count++;
                }
            }
        }

        if (useOffset)
            offset.realloc(count);
        aRet = OUString(newStr.get(), count);
    }
    return aRet;
}

namespace
{
void NativeToAscii_numberMaker(sal_Int16 max, sal_Int16 prev, const sal_Unicode *str,
        sal_Int32& i, sal_Int32 nCount, sal_Unicode *dst, sal_Int32& count, Sequence< sal_Int32 >& offset, bool useOffset,
        OUString& numberChar, OUString& multiplierChar)
{
    sal_Int16 curr = 0, num = 0, end = 0, shift = 0;<--- Variable 'curr' is assigned a value that is never used.<--- Variable 'shift' is assigned a value that is never used.
    while (++i < nCount) {
        if ((curr = sal::static_int_cast<sal_Int16>( numberChar.indexOf(str[i]) )) >= 0) {
            if (num > 0)
                break;
            num = curr % 10;
        } else if ((curr = sal::static_int_cast<sal_Int16>( multiplierChar.indexOf(str[i]) )) >= 0) {
            curr = MultiplierExponent_7_CJK[curr % ExponentCount_7_CJK];
            if (prev > curr && num == 0) num = 1; // One may be omitted in informal format
            shift = end = 0;
            if (curr >= max)
                max = curr;
            else if (curr > prev)
                shift = max - curr;
            else
                end = curr;
            while (end++ < prev) {
                dst[count] = NUMBER_ZERO + (end == prev ? num : 0);
                if (useOffset)
                    offset[count] = i;
                count++;
            }
            if (shift) {
                count -= max;
                for (const sal_Int32 countEnd = count+shift; count < countEnd; count++) {
                    dst[count] = dst[count + curr];
                    if (useOffset)
                        offset[count] = offset[count + curr];
                }
                max = curr;
            }
            NativeToAscii_numberMaker(max, curr, str, i, nCount, dst,
                    count, offset, useOffset, numberChar, multiplierChar);
            return;
        } else
            break;
    }
    while (end++ < prev) {
        dst[count] = NUMBER_ZERO + (end == prev ? num : 0);
        if (useOffset)
            offset[count] = i - 1;
        count++;
    }
}

/// @throws RuntimeException
OUString NativeToAscii(const OUString& inStr,
        sal_Int32 nCount, Sequence< sal_Int32 >& offset, bool useOffset )
{
    OUString aRet;

    sal_Int32 strLen = inStr.getLength();

    if (nCount > strLen)
        nCount = strLen;

    if (nCount > 0) {
        const sal_Unicode *str = inStr.getStr();
        std::unique_ptr<sal_Unicode[]> newStr(new sal_Unicode[nCount * MultiplierExponent_7_CJK[0] + 2]);
        if (useOffset)
            offset.realloc( nCount * MultiplierExponent_7_CJK[0] + 1 );
        sal_Int32 count = 0, index;
        sal_Int32 i;

        OUString numberChar, multiplierChar, decimalChar, minusChar, separatorChar;
        numberChar = OUString(NumberChar[0], 10*NumberChar_Count);
        multiplierChar = OUString(MultiplierChar_7_CJK[0], ExponentCount_7_CJK*Multiplier_Count);
        decimalChar = OUString(DecimalChar, NumberChar_Count);
        minusChar = OUString(MinusChar, NumberChar_Count);
        separatorChar = OUString(
            reinterpret_cast<sal_Unicode *>(SeparatorChar), NumberChar_Count);

        for ( i = 0; i < nCount; i++) {
            if ((index = multiplierChar.indexOf(str[i])) >= 0) {
                if (count == 0 || !isNumber(newStr[count-1])) { // add 1 in front of multiplier
                    newStr[count] = NUMBER_ONE;
                    if (useOffset)
                        offset[count] = i;
                    count++;
                }
                index = MultiplierExponent_7_CJK[index % ExponentCount_7_CJK];
                NativeToAscii_numberMaker(
                        sal::static_int_cast<sal_Int16>( index ), sal::static_int_cast<sal_Int16>( index ),
                        str, i, nCount, newStr.get(), count, offset, useOffset,
                        numberChar, multiplierChar);
            } else {
                if ((index = numberChar.indexOf(str[i])) >= 0)
                    newStr[count] = sal::static_int_cast<sal_Unicode>( (index % 10) + NUMBER_ZERO );
                else if (separatorChar.indexOf(str[i]) >= 0 &&
<--- Array index 'i' is used before limits check. [+]
Defensive programming: The variable 'i' is used as an array index before it is checked that is within limits. This can mean that the array might be accessed out of bounds. Reorder conditions such as '(a[i] && i < 10)' to '(i < 10 && a[i])'. That way the array will not be accessed if the index is out of limits.
                        (i < nCount-1 && (numberChar.indexOf(str[i+1]) >= 0 ||
                                          multiplierChar.indexOf(str[i+1]) >= 0)))
                    newStr[count] = SeparatorChar[NumberChar_HalfWidth];
                else if (decimalChar.indexOf(str[i]) >= 0 &&
<--- Array index 'i' is used before limits check. [+]
Defensive programming: The variable 'i' is used as an array index before it is checked that is within limits. This can mean that the array might be accessed out of bounds. Reorder conditions such as '(a[i] && i < 10)' to '(i < 10 && a[i])'. That way the array will not be accessed if the index is out of limits.
                        (i < nCount-1 && (numberChar.indexOf(str[i+1]) >= 0 ||
                                          multiplierChar.indexOf(str[i+1]) >= 0)))
                    // Only when decimal point is followed by numbers,
                    // it will be convert to ASCII decimal point
                    newStr[count] = DecimalChar[NumberChar_HalfWidth];
                else if (minusChar.indexOf(str[i]) >= 0 &&
<--- Array index 'i' is used before limits check. [+]
Defensive programming: The variable 'i' is used as an array index before it is checked that is within limits. This can mean that the array might be accessed out of bounds. Reorder conditions such as '(a[i] && i < 10)' to '(i < 10 && a[i])'. That way the array will not be accessed if the index is out of limits.
                        (i < nCount-1 && (numberChar.indexOf(str[i+1]) >= 0 ||
                                          multiplierChar.indexOf(str[i+1]) >= 0)))
                    // Only when minus is followed by numbers,
                    // it will be convert to ASCII minus sign
                    newStr[count] = MinusChar[NumberChar_HalfWidth];
                else
                    newStr[count] = str[i];
                if (useOffset)
                    offset[count] = i;
                count++;
            }
        }

        if (useOffset) {
            offset.realloc(count);
        }
        aRet = OUString(newStr.get(), count);
    }
    return aRet;
}

const Number natnum4[4] = {
        { NumberChar_Lower_zh, MultiplierChar_6_CJK[Multiplier_Lower_zh], 0,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_Lower_zh, MultiplierChar_6_CJK[Multiplier_Lower_zh_TW], 0,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_Modern_ja, MultiplierChar_7_CJK[Multiplier_Modern_ja], NUMBER_OMIT_ZERO_ONE_67,
                ExponentCount_7_CJK, MultiplierExponent_7_CJK },
        { NumberChar_Lower_ko, MultiplierChar_6_CJK[Multiplier_Lower_ko], NUMBER_OMIT_ZERO,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
};

const Number natnum5[4] = {
        { NumberChar_Upper_zh, MultiplierChar_6_CJK[Multiplier_Upper_zh], 0,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_Upper_zh_TW, MultiplierChar_6_CJK[Multiplier_Upper_zh_TW], 0,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_Traditional_ja, MultiplierChar_7_CJK[Multiplier_Traditional_ja], NUMBER_OMIT_ZERO_ONE_67,
                ExponentCount_7_CJK, MultiplierExponent_7_CJK },
        { NumberChar_Upper_ko, MultiplierChar_6_CJK[Multiplier_Upper_ko], 0,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
};

const Number natnum6[4] = {
        { NumberChar_FullWidth, MultiplierChar_6_CJK[Multiplier_Lower_zh], 0,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_FullWidth, MultiplierChar_6_CJK[Multiplier_Lower_zh_TW], 0,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_FullWidth, MultiplierChar_7_CJK[Multiplier_Modern_ja], NUMBER_OMIT_ZERO_ONE_67,
                ExponentCount_7_CJK, MultiplierExponent_7_CJK },
        { NumberChar_FullWidth, MultiplierChar_6_CJK[Multiplier_Hangul_ko], NUMBER_OMIT_ZERO,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
};

const Number natnum7[4] = {
        { NumberChar_Lower_zh, MultiplierChar_6_CJK[Multiplier_Lower_zh], NUMBER_OMIT_ALL,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_Lower_zh, MultiplierChar_6_CJK[Multiplier_Lower_zh_TW], NUMBER_OMIT_ALL,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_Modern_ja, MultiplierChar_2_CJK[Multiplier_Modern_ja], NUMBER_OMIT_ZERO_ONE,
                ExponentCount_2_CJK, MultiplierExponent_2_CJK },
        { NumberChar_Lower_ko, MultiplierChar_6_CJK[Multiplier_Lower_ko], NUMBER_OMIT_ALL,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
};

const Number natnum8[4] = {
        { NumberChar_Upper_zh, MultiplierChar_6_CJK[Multiplier_Upper_zh], NUMBER_OMIT_ALL,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_Upper_zh_TW, MultiplierChar_6_CJK[Multiplier_Upper_zh_TW], NUMBER_OMIT_ALL,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
        { NumberChar_Traditional_ja, MultiplierChar_2_CJK[Multiplier_Traditional_ja], NUMBER_OMIT_ZERO_ONE,
                ExponentCount_2_CJK, MultiplierExponent_2_CJK },
        { NumberChar_Upper_ko, MultiplierChar_6_CJK[Multiplier_Upper_ko], NUMBER_OMIT_ALL,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK },
};

const Number natnum10 = { NumberChar_Hangul_ko, MultiplierChar_6_CJK[Multiplier_Hangul_ko], NUMBER_OMIT_ZERO,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK };
const Number natnum11 = { NumberChar_Hangul_ko, MultiplierChar_6_CJK[Multiplier_Hangul_ko], NUMBER_OMIT_ALL,
                ExponentCount_6_CJK, MultiplierExponent_6_CJK };

//! ATTENTION: Do not change order of elements!
//! Append new languages to the end of the list!
const char *natnum1Locales[] = {
    "zh_CN",
    "zh_TW",
    "ja",
    "ko",
    "he",
    "ar",
    "th",
    "hi",
    "or",
    "mr",
    "bn",
    "pa",
    "gu",
    "ta",
    "te",
    "kn",
    "ml",
    "lo",
    "bo",
    "my",
    "km",
    "mn",
    "ne",
    "dz",
    "fa",
    "cu"
};
const sal_Int16 nbOfLocale = SAL_N_ELEMENTS(natnum1Locales);

//! ATTENTION: Do not change order of elements!
//! Number and order must match elements of natnum1Locales!
const sal_Int16 natnum1[] = {
    NumberChar_Lower_zh,
    NumberChar_Lower_zh,
    NumberChar_Modern_ja,
    NumberChar_Lower_ko,
    NumberChar_he,
    NumberChar_Indic_ar,
    NumberChar_th,
    NumberChar_hi,
    NumberChar_or,
    NumberChar_mr,
    NumberChar_bn,
    NumberChar_pa,
    NumberChar_gu,
    NumberChar_ta,
    NumberChar_te,
    NumberChar_kn,
    NumberChar_ml,
    NumberChar_lo,
    NumberChar_bo,
    NumberChar_my,
    NumberChar_km,
    NumberChar_mn,
    NumberChar_ne,
    NumberChar_dz,
    NumberChar_EastIndic_ar,
    NumberChar_cu
};
const sal_Int16 sizeof_natnum1 = SAL_N_ELEMENTS(natnum1);

//! ATTENTION: Do not change order of elements!
//! Order must match first elements of natnum1Locales!
const sal_Int16 natnum2[] = {
    NumberChar_Upper_zh,
    NumberChar_Upper_zh_TW,
    NumberChar_Traditional_ja,
    NumberChar_Upper_ko,
    NumberChar_he
};
const sal_Int16 sizeof_natnum2 = SAL_N_ELEMENTS(natnum2);

sal_Int16 getLanguageNumber( const Locale& rLocale)
{
    // return zh_TW for TW, HK and MO, return zh_CN for other zh locales.
    if (rLocale.Language == "zh") return MsLangId::isTraditionalChinese(rLocale) ? 1 : 0;

    for (sal_Int16 i = 2; i < nbOfLocale; i++)
        if (rLocale.Language.equalsAsciiL(natnum1Locales[i], 2))
            return i;

    return -1;
}

struct Separators
{
    sal_Unicode DecimalSeparator;
    sal_Unicode ThousandSeparator;
    Separators(const Locale& rLocale)
<--- Struct 'Separators' has a constructor with 1 argument that is not explicit. [+]
Struct 'Separators' has a constructor with 1 argument that is not explicit. Such constructors should in general be explicit for type safety reasons. Using the explicit keyword in the constructor means some mistakes when using the class can be avoided.
    {
        LocaleDataItem aLocaleItem = LocaleDataImpl::get()->getLocaleItem(rLocale);
        DecimalSeparator = aLocaleItem.decimalSeparator.toChar();
        ThousandSeparator = aLocaleItem.thousandSeparator.toChar();
    }
};

Separators getLocaleSeparators(const Locale& rLocale, const OUString& rLocStr)
{
    // Guard the static variable below.
    osl::MutexGuard aGuard(theNatNumMutex::get());
    // Maximum a couple hundred of pairs with 4-byte structs - so no need for smart managing
    static std::unordered_map<OUString, Separators> aLocaleSeparatorsBuf;
    auto it = aLocaleSeparatorsBuf.find(rLocStr);
    if (it == aLocaleSeparatorsBuf.end())
    {
        it = aLocaleSeparatorsBuf.emplace(rLocStr, Separators(rLocale)).first;
    }
    return it->second;
}

OUString getNumberText(const Locale& rLocale, const OUString& rNumberString,
                       const OUString& sNumberTextParams)
{
    sal_Int32 i, count = 0;
    const sal_Int32 len = rNumberString.getLength();
    const sal_Unicode* src = rNumberString.getStr();

    OUString aLoc = LanguageTag::convertToBcp47(rLocale);
    Separators aSeparators = getLocaleSeparators(rLocale, aLoc);

    OUStringBuffer sBuf(len);
    for (i = 0; i < len; i++)
    {
        sal_Unicode ch = src[i];
        if (isNumber(ch))
        {
            ++count;
            sBuf.append(ch);
        }
        else if (ch == aSeparators.DecimalSeparator)
            // Convert any decimal separator to point - in case libnumbertext has a different one
            // for this locale (it seems that point is supported for all locales in libnumbertext)
            sBuf.append('.');
        else if (ch == aSeparators.ThousandSeparator && count > 0)
            continue;
        else if (isMinus(ch) && count == 0)
            sBuf.append(ch);
        else
            break;
    }

    // Handle also month and day names for NatNum12 date formatting
    const OUString& rNumberStr = (count == 0) ? rNumberString : sBuf.makeStringAndClear();

    // Guard the static variables below.
    osl::MutexGuard aGuard( theNatNumMutex::get());

    static auto xNumberText
        = css::linguistic2::NumberText::create(comphelper::getProcessComponentContext());
    OUString numbertext_prefix;
    // default "cardinal" gets empty prefix
    if (!sNumberTextParams.isEmpty() && sNumberTextParams != "cardinal")
        numbertext_prefix = sNumberTextParams + " ";
    // Several hundreds of headings could result typing lags because
    // of the continuous update of the multiple number names during typing.
    // We fix this by buffering the result of the conversion.
    static std::unordered_map<OUString, std::map<OUString, OUString>> aBuff;
    auto& rItems = aBuff[rNumberStr];
    auto& rItem = rItems[numbertext_prefix + aLoc];
    if (rItem.isEmpty())
    {
        rItem = xNumberText->getNumberText(numbertext_prefix + rNumberStr, rLocale);
        // use number at missing number to text conversion
        if (rItem.isEmpty())
            rItem = rNumberStr;
    }
    OUString sResult = rItem;
    if (i != 0 && i < len)
        sResult += rNumberString.copy(i);
    return sResult;
}
}

OUString NativeNumberSupplierService::getNativeNumberString(const OUString& aNumberString, const Locale& rLocale,
                                                            sal_Int16 nNativeNumberMode,
                                                            Sequence<sal_Int32>& offset,
                                                            const OUString& rNativeNumberParams)
{
    if (!isValidNatNum(rLocale, nNativeNumberMode))
        return aNumberString;

    if (nNativeNumberMode == NativeNumberMode::NATNUM12)
    {
        // handle capitalization prefixes "capitalize", "upper" and "title"

        enum WhichCasing
        {
            CAPITALIZE,
            UPPER,
            TITLE
        };

        struct CasingEntry
        {
            OUStringLiteral aLiteral;
            WhichCasing     eCasing;
        };

        static const CasingEntry Casings[] =
        {
            { OUStringLiteral("capitalize"), CAPITALIZE },
            { OUStringLiteral("upper"), UPPER },
            { OUStringLiteral("title"), TITLE }
        };

        sal_Int32 nStripCase = 0;
        size_t nCasing;
        for (nCasing = 0; nCasing < SAL_N_ELEMENTS(Casings); ++nCasing)
        {
            if (rNativeNumberParams.startsWith( Casings[nCasing].aLiteral))
            {
                nStripCase = Casings[nCasing].aLiteral.size;
                break;
            }
        }

        if (nStripCase > 0 && (rNativeNumberParams.getLength() == nStripCase ||
                    rNativeNumberParams[nStripCase++] == ' '))
        {
            OUString aStr = getNumberText(rLocale, aNumberString, rNativeNumberParams.copy(nStripCase));

            if (!xCharClass.is())
                xCharClass = CharacterClassification::create(comphelper::getProcessComponentContext());

            switch (Casings[nCasing].eCasing)
            {
                case CAPITALIZE:
                    return xCharClass->toTitle(aStr, 0, 1, aLocale) +
                        (aStr.getLength() > 1 ? aStr.copy(1) : OUString());
                case UPPER:
                    return xCharClass->toUpper(aStr, 0, aStr.getLength(), aLocale);
                case TITLE:
                    return xCharClass->toTitle(aStr, 0, aStr.getLength(), aLocale);
            }
        }
        else
        {
            return getNumberText(rLocale, aNumberString, rNativeNumberParams);
        }
    }

    sal_Int16 langnum = getLanguageNumber(rLocale);
    if (langnum == -1)
        return aNumberString;

    const Number *number = nullptr;
    sal_Int16 num = -1;

    switch (nNativeNumberMode)
    {
        case NativeNumberMode::NATNUM0: // Ascii
            return NativeToAscii(aNumberString, aNumberString.getLength(), offset, useOffset);
        case NativeNumberMode::NATNUM1: // Char, Lower
            num = natnum1[langnum];
            break;
        case NativeNumberMode::NATNUM2: // Char, Upper
            num = natnum2[langnum];
            break;
        case NativeNumberMode::NATNUM3: // Char, FullWidth
            num = NumberChar_FullWidth;
            break;
        case NativeNumberMode::NATNUM4: // Text, Lower, Long
            number = &natnum4[langnum];
            break;
        case NativeNumberMode::NATNUM5: // Text, Upper, Long
            number = &natnum5[langnum];
            break;
        case NativeNumberMode::NATNUM6: // Text, FullWidth
            number = &natnum6[langnum];
            break;
        case NativeNumberMode::NATNUM7: // Text. Lower, Short
            number = &natnum7[langnum];
            break;
        case NativeNumberMode::NATNUM8: // Text, Upper, Short
            number = &natnum8[langnum];
            break;
        case NativeNumberMode::NATNUM9: // Char, Hangul
            num = NumberChar_Hangul_ko;
            break;
        case NativeNumberMode::NATNUM10:        // Text, Hangul, Long
            number = &natnum10;
            break;
        case NativeNumberMode::NATNUM11:        // Text, Hangul, Short
            number = &natnum11;
            break;
        default:
            break;
    }

    if (number || num >= 0) {
        if (aLocale.Language != rLocale.Language ||
                aLocale.Country != rLocale.Country ||
                aLocale.Variant != rLocale.Variant) {
            LocaleDataItem item = LocaleDataImpl::get()->getLocaleItem( rLocale );
            aLocale = rLocale;
            DecimalChar[NumberChar_HalfWidth]=item.decimalSeparator.toChar();
            if (DecimalChar[NumberChar_HalfWidth] > 0x7E || DecimalChar[NumberChar_HalfWidth] < 0x21)
                DecimalChar[NumberChar_FullWidth]=0xFF0E;
            else
                DecimalChar[NumberChar_FullWidth]=DecimalChar[NumberChar_HalfWidth]+0xFEE0;
            SeparatorChar[NumberChar_HalfWidth]=item.thousandSeparator.toChar();
            if (SeparatorChar[NumberChar_HalfWidth] > 0x7E || SeparatorChar[NumberChar_HalfWidth] < 0x21)
                SeparatorChar[NumberChar_FullWidth]=0xFF0C;
            else
                SeparatorChar[NumberChar_FullWidth]=SeparatorChar[NumberChar_HalfWidth]+0xFEE0;
        }
        if (number)
            return AsciiToNative( aNumberString, aNumberString.getLength(), offset, useOffset, number );
        else if (num == NumberChar_he)
            return getHebrewNativeNumberString(aNumberString,
                    nNativeNumberMode == NativeNumberMode::NATNUM2);
        else if (num == NumberChar_cu)
            return getCyrillicNativeNumberString(aNumberString);
        else
            return AsciiToNativeChar(aNumberString, aNumberString.getLength(), offset, useOffset, num);
    }
    else
        return aNumberString;
}

OUString SAL_CALL NativeNumberSupplierService::getNativeNumberString(const OUString& aNumberString, const Locale& rLocale,
                sal_Int16 nNativeNumberMode)
{
    Sequence< sal_Int32 > offset;
    return getNativeNumberString(aNumberString, rLocale, nNativeNumberMode, offset);
}

OUString SAL_CALL NativeNumberSupplierService::getNativeNumberStringParams(
    const OUString& rNumberString, const css::lang::Locale& rLocale, sal_Int16 nNativeNumberMode,
    const OUString& rNativeNumberParams)
{
    Sequence<sal_Int32> offset;
    return getNativeNumberString(rNumberString, rLocale, nNativeNumberMode, offset, rNativeNumberParams);
}

sal_Unicode NativeNumberSupplierService::getNativeNumberChar( const sal_Unicode inChar, const Locale& rLocale, sal_Int16 nNativeNumberMode )
{
    if (nNativeNumberMode == NativeNumberMode::NATNUM0) { // Ascii
        for (const auto & i : NumberChar)
            for (sal_Int16 j = 0; j < 10; j++)
                if (inChar == i[j])
                    return j;
        return inChar;
    }

    if (!isNumber(inChar))
        return inChar;

    if (!isValidNatNum(rLocale, nNativeNumberMode))
        return inChar;

    sal_Int16 langnum = getLanguageNumber(rLocale);
    if (langnum == -1)
        return inChar;

    switch (nNativeNumberMode)
    {
        case NativeNumberMode::NATNUM1: // Char, Lower
        case NativeNumberMode::NATNUM4: // Text, Lower, Long
        case NativeNumberMode::NATNUM7: // Text. Lower, Short
            return NumberChar[natnum1[langnum]][inChar - NUMBER_ZERO];
        case NativeNumberMode::NATNUM2: // Char, Upper
        case NativeNumberMode::NATNUM5: // Text, Upper, Long
        case NativeNumberMode::NATNUM8: // Text, Upper, Short
            return NumberChar[natnum2[langnum]][inChar - NUMBER_ZERO];
        case NativeNumberMode::NATNUM3: // Char, FullWidth
        case NativeNumberMode::NATNUM6: // Text, FullWidth
            return NumberChar[NumberChar_FullWidth][inChar - NUMBER_ZERO];
        case NativeNumberMode::NATNUM9: // Char, Hangul
        case NativeNumberMode::NATNUM10:        // Text, Hangul, Long
        case NativeNumberMode::NATNUM11:        // Text, Hangul, Short
            return NumberChar[NumberChar_Hangul_ko][inChar - NUMBER_ZERO];
        default:
            break;
    }

    return inChar;
}

sal_Bool SAL_CALL NativeNumberSupplierService::isValidNatNum( const Locale& rLocale, sal_Int16 nNativeNumberMode )
{
    sal_Int16 langnum = getLanguageNumber(rLocale);

    switch (nNativeNumberMode) {
        case NativeNumberMode::NATNUM0:     // Ascii
        case NativeNumberMode::NATNUM3:     // Char, FullWidth
        case NativeNumberMode::NATNUM12:    // spell out numbers, dates and money amounts
            return true;
        case NativeNumberMode::NATNUM1:     // Char, Lower
            return (langnum >= 0);
        case NativeNumberMode::NATNUM2:     // Char, Upper
            if (langnum == 4) // Hebrew numbering
                return true;
            [[fallthrough]];
        case NativeNumberMode::NATNUM4:     // Text, Lower, Long
        case NativeNumberMode::NATNUM5:     // Text, Upper, Long
        case NativeNumberMode::NATNUM6:     // Text, FullWidth
        case NativeNumberMode::NATNUM7:     // Text. Lower, Short
        case NativeNumberMode::NATNUM8:     // Text, Upper, Short
            return (langnum >= 0 && langnum < 4); // CJK numbering
        case NativeNumberMode::NATNUM9:     // Char, Hangul
        case NativeNumberMode::NATNUM10:    // Text, Hangul, Long
        case NativeNumberMode::NATNUM11:    // Text, Hangul, Short
            return (langnum == 3); // Korean numbering
    }
    return false;
}

NativeNumberXmlAttributes SAL_CALL NativeNumberSupplierService::convertToXmlAttributes( const Locale& rLocale, sal_Int16 nNativeNumberMode )
{
    static const sal_Int16 attShort         = 0;
    static const sal_Int16 attMedium        = 1;
    static const sal_Int16 attLong          = 2;
    static const char *attType[] = { "short", "medium", "long" };

    sal_Int16 number = NumberChar_HalfWidth, type = attShort;

    sal_Int16 langnum = -1;
    if (isValidNatNum(rLocale, nNativeNumberMode)) {
        langnum = getLanguageNumber(rLocale);
    }
    if (langnum != -1) {
        switch (nNativeNumberMode) {
            case NativeNumberMode::NATNUM0: // Ascii
                number = NumberChar_HalfWidth;
                type = attShort;
                break;
            case NativeNumberMode::NATNUM1: // Char, Lower
                number = natnum1[langnum];
                type = attShort;
                break;
            case NativeNumberMode::NATNUM2: // Char, Upper
                number = natnum2[langnum];
                type = number == NumberChar_he ? attMedium : attShort;
                break;
            case NativeNumberMode::NATNUM3: // Char, FullWidth
                number = NumberChar_FullWidth;
                type = attShort;
                break;
            case NativeNumberMode::NATNUM4: // Text, Lower, Long
                number = natnum1[langnum];
                type = attLong;
                break;
            case NativeNumberMode::NATNUM5: // Text, Upper, Long
                number = natnum2[langnum];
                type = attLong;
                break;
            case NativeNumberMode::NATNUM6: // Text, FullWidth
                number = NumberChar_FullWidth;
                type = attLong;
                break;
            case NativeNumberMode::NATNUM7: // Text. Lower, Short
                number = natnum1[langnum];
                type = attMedium;
                break;
            case NativeNumberMode::NATNUM8: // Text, Upper, Short
                number = natnum2[langnum];
                type = attMedium;
                break;
            case NativeNumberMode::NATNUM9: // Char, Hangul
                number = NumberChar_Hangul_ko;
                type = attShort;
                break;
            case NativeNumberMode::NATNUM10:        // Text, Hangul, Long
                number = NumberChar_Hangul_ko;
                type = attLong;
                break;
            case NativeNumberMode::NATNUM11:        // Text, Hangul, Short
                number = NumberChar_Hangul_ko;
                type = attMedium;
                break;
            default:
                break;
        }
    }
    return NativeNumberXmlAttributes(rLocale, OUString(&NumberChar[number][1], 1),
            OUString::createFromAscii(attType[type]));
}

static bool natNumIn(sal_Int16 num, const sal_Int16 natnum[], sal_Int16 len)
{
    for (sal_Int16 i = 0; i < len; i++)
        if (natnum[i] == num)
            return true;
    return false;
}

sal_Int16 SAL_CALL NativeNumberSupplierService::convertFromXmlAttributes( const NativeNumberXmlAttributes& aAttr )
{
    sal_Unicode numberChar[NumberChar_Count];
    for (sal_Int16 i = 0; i < NumberChar_Count; i++)
        numberChar[i] = NumberChar[i][1];
    OUString number(numberChar, NumberChar_Count);

    sal_Int16 num = sal::static_int_cast<sal_Int16>( number.indexOf(aAttr.Format) );

    if ( aAttr.Style == "short" ) {
        if (num == NumberChar_FullWidth)
            return NativeNumberMode::NATNUM3;
        else if (num == NumberChar_Hangul_ko)
            return NativeNumberMode::NATNUM9;
        else if (natNumIn(num, natnum1, sizeof_natnum1))
            return NativeNumberMode::NATNUM1;
        else if (natNumIn(num, natnum2, sizeof_natnum2))
            return NativeNumberMode::NATNUM2;
    } else if ( aAttr.Style == "medium" ) {
        if (num == NumberChar_Hangul_ko)
            return NativeNumberMode::NATNUM11;
        else if (num == NumberChar_he)
            return NativeNumberMode::NATNUM2;
        else if (natNumIn(num, natnum1, sizeof_natnum1))
            return NativeNumberMode::NATNUM7;
        else if (natNumIn(num, natnum2, sizeof_natnum2))
            return NativeNumberMode::NATNUM8;
    } else if ( aAttr.Style == "long" ) {
        if (num == NumberChar_FullWidth)
            return NativeNumberMode::NATNUM6;
        else if (num == NumberChar_Hangul_ko)
            return NativeNumberMode::NATNUM10;
        else if (natNumIn(num, natnum1, sizeof_natnum1))
            return NativeNumberMode::NATNUM4;
        else if (natNumIn(num, natnum2, sizeof_natnum2))
            return NativeNumberMode::NATNUM5;
    } else {
        throw RuntimeException();
    }
    return NativeNumberMode::NATNUM0;
}


// Following code generates Hebrew Number,
// see numerical system in the Hebrew Numbering System in following link for details,
// http://smontagu.org/writings/HebrewNumbers.html

namespace {

struct HebrewNumberChar {
    sal_Unicode code;
    sal_Int16 value;
};

}

HebrewNumberChar const HebrewNumberCharArray[] = {
    { 0x05ea, 400 },
    { 0x05ea, 400 },
    { 0x05e9, 300 },
    { 0x05e8, 200 },
    { 0x05e7, 100 },
    { 0x05e6, 90 },
    { 0x05e4, 80 },
    { 0x05e2, 70 },
    { 0x05e1, 60 },
    { 0x05e0, 50 },
    { 0x05de, 40 },
    { 0x05dc, 30 },
    { 0x05db, 20 },
    { 0x05d9, 10 },
    { 0x05d8, 9 },
    { 0x05d7, 8 },
    { 0x05d6, 7 },
    { 0x05d5, 6 },
    { 0x05d4, 5 },
    { 0x05d3, 4 },
    { 0x05d2, 3 },
    { 0x05d1, 2 },
    { 0x05d0, 1 }
};

static const sal_Unicode thousand[] = {0x05d0, 0x05dc, 0x05e3, 0x0};
static const sal_Unicode thousands[] = {0x05d0, 0x05dc, 0x05e4, 0x05d9, 0x0};
static const sal_Unicode thousands_last[] = {0x05d0, 0x05dc, 0x05e4, 0x05d9, 0x05dd, 0x0};
static const sal_Unicode geresh = 0x05f3;
static const sal_Unicode gershayim = 0x05f4;

static void makeHebrewNumber(sal_Int64 value, OUStringBuffer& output, bool isLast, bool useGeresh)
{
    sal_Int16 num = sal::static_int_cast<sal_Int16>(value % 1000);

    if (value > 1000) {
        makeHebrewNumber(value / 1000, output, num != 0, useGeresh);
        output.append(" ");
    }
    if (num == 0) {
        output.append(value == 1000 ? thousand : isLast ? thousands_last : thousands);
    } else {
        sal_Int16 nbOfChar = 0;
        for (sal_Int32 j = 0; num > 0 && j < sal_Int32(SAL_N_ELEMENTS(HebrewNumberCharArray)); j++) {
            if (num - HebrewNumberCharArray[j].value >= 0) {
                nbOfChar++;
                // https://en.wikipedia.org/wiki/Hebrew_numerals#Key_exceptions
                // By convention, the numbers 15 and 16 are represented as 9 + 6 and 9 + 7
                if (num == 15 || num == 16) // substitution for 15 and 16
                    j++;
                assert(j < sal_Int32(SAL_N_ELEMENTS(HebrewNumberCharArray)));
                num = sal::static_int_cast<sal_Int16>( num - HebrewNumberCharArray[j].value );
                output.append(HebrewNumberCharArray[j].code);
            }
        }
        if (useGeresh) {
            if (nbOfChar > 1)   // a number is written as more than one character
                output.insert(output.getLength() - 1, gershayim);
            else if (nbOfChar == 1) // a number is written as a single character
                output.append(geresh);
        }
    }
}

OUString getHebrewNativeNumberString(const OUString& aNumberString, bool useGeresh)
{
    sal_Int64 value = 0;
    sal_Int32 i, count = 0, len = aNumberString.getLength();
    const sal_Unicode *src = aNumberString.getStr();

    for (i = 0; i < len; i++) {
        sal_Unicode ch = src[i];
        if (isNumber(ch)) {
            if (++count >= 20) // Number is too long, could not be handled.
                return aNumberString;
            value = value * 10 + (ch - NUMBER_ZERO);
        }
        else if (isSeparator(ch) && count > 0) continue;
        else if (isMinus(ch) && count == 0) continue;
        else break;
    }

    if (value > 0) {
        OUStringBuffer output(count*2 + 2 + len - i);

        makeHebrewNumber(value, output, true, useGeresh);

        if (i < len)
            output.append(std::u16string_view(aNumberString).substr(i));

        return output.makeStringAndClear();
    }
    else
        return aNumberString;
}

// Support for Cyrillic Numerals
// See UTN 41 for implementation information
// http://www.unicode.org/notes/tn41/

static const sal_Unicode cyrillicThousandsMark = 0x0482;
static const sal_Unicode cyrillicTitlo = 0x0483;
static const sal_Unicode cyrillicTen = 0x0456;

namespace {

struct CyrillicNumberChar {
    sal_Unicode code;
    sal_Int16 value;
};

}

CyrillicNumberChar const CyrillicNumberCharArray[] = {
    { 0x0446, 900 },
    { 0x047f, 800 },
    { 0x0471, 700 },
    { 0x0445, 600 },
    { 0x0444, 500 },
    { 0x0443, 400 },
    { 0x0442, 300 },
    { 0x0441, 200 },
    { 0x0440, 100 },
    { 0x0447, 90 },
    { 0x043f, 80 },
    { 0x047b, 70 },
    { 0x046f, 60 },
    { 0x043d, 50 },
    { 0x043c, 40 },
    { 0x043b, 30 },
    { 0x043a, 20 },
    { 0x0456, 10 },
    { 0x0473, 9 },
    { 0x0438, 8 },
    { 0x0437, 7 },
    { 0x0455, 6 },
    { 0x0454, 5 },
    { 0x0434, 4 },
    { 0x0433, 3 },
    { 0x0432, 2 },
    { 0x0430, 1 }
};

static void makeCyrillicNumber(sal_Int64 value, OUStringBuffer& output, bool addTitlo)
{
    sal_Int16 num = sal::static_int_cast<sal_Int16>(value % 1000);
    if (value >= 1000) {
        output.append(cyrillicThousandsMark);
        makeCyrillicNumber(value / 1000, output, false);
        if (value >= 10000 && (value - 10000) % 1000 != 0) {
            output.append(" ");
        }
        if (value % 1000 == 0)
            addTitlo = false;
    }

    for (sal_Int32 j = 0; num > 0 && j < sal_Int32(SAL_N_ELEMENTS(CyrillicNumberCharArray)); j++) {
        if (num < 20 && num > 10) {
            num -= 10;
            makeCyrillicNumber(num, output, false);
            output.append(cyrillicTen);
            break;
        }

        if (CyrillicNumberCharArray[j].value <= num) {
            output.append(CyrillicNumberCharArray[j].code);
            num = sal::static_int_cast<sal_Int16>( num - CyrillicNumberCharArray[j].value );
        }
    }

    if (!addTitlo)
        return;

    if (output.getLength() == 1) {
        output.append(cyrillicTitlo);
    } else if (output.getLength() == 2) {
        if (value > 800 && value < 900) {
            output.append(cyrillicTitlo);
        } else {
            output.insert(1, cyrillicTitlo);
        }
    } else if (output.getLength() > 2) {
        if (output.indexOf(" ") == output.getLength() - 2) {
            output.append(cyrillicTitlo);
        } else {
            output.insert(output.getLength() - 1, cyrillicTitlo);
        }
    }
}

OUString getCyrillicNativeNumberString(const OUString& aNumberString)
{
    sal_Int64 value = 0;
    sal_Int32 i, count = 0, len = aNumberString.getLength();
    const sal_Unicode *src = aNumberString.getStr();

    for (i = 0; i < len; i++) {
        sal_Unicode ch = src[i];
        if (isNumber(ch)) {
            if (++count >= 8) // Number is too long, could not be handled.
                return aNumberString;
            value = value * 10 + (ch - NUMBER_ZERO);
        }
        else if (isSeparator(ch) && count > 0) continue;
        else if (isMinus(ch) && count == 0) continue;
        else break;
    }

    if (value > 0) {
        OUStringBuffer output(count*2 + 2 + len - i);

        makeCyrillicNumber(value, output, true);

        if (i < len)
            output.append(std::u16string_view(aNumberString).substr(i));

        return output.makeStringAndClear();
    }
    else
        return aNumberString;
}

static const char implementationName[] = "com.sun.star.i18n.NativeNumberSupplier";

OUString SAL_CALL NativeNumberSupplierService::getImplementationName()
{
    return implementationName;
}

sal_Bool SAL_CALL
NativeNumberSupplierService::supportsService(const OUString& rServiceName)
{
    return cppu::supportsService(this, rServiceName);
}

Sequence< OUString > SAL_CALL
NativeNumberSupplierService::getSupportedServiceNames()
{
    return {implementationName, "com.sun.star.i18n.NativeNumberSupplier2"};
}

}

extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
com_sun_star_i18n_NativeNumberSupplier_get_implementation(
    css::uno::XComponentContext *,
    css::uno::Sequence<css::uno::Any> const &)
{
    return cppu::acquire(new i18npool::NativeNumberSupplierService());
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */