qlocale.cpp

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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
**
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** General Public License version 2.1 as published by the Free Software
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** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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#include "qglobal.h"

#ifndef QT_NO_SYSTEMLOCALE
QT_BEGIN_NAMESPACE
class QSystemLocale;
static QSystemLocale *QSystemLocale_globalSystemLocale();
QT_END_NAMESPACE
#endif

#if !defined(QWS) && defined(Q_OS_MAC)
#   include "private/qcore_mac_p.h"
#   include <CoreFoundation/CoreFoundation.h>
#endif

#include "qplatformdefs.h"

#include "qdatastream.h"
#include "qstring.h"
#include "qlocale.h"
#include "qlocale_p.h"
#include "qlocale_tools_p.h"
#include "qdatetime_p.h"
#include "qnamespace.h"
#include "qdatetime.h"
#include "qstringlist.h"
#include "qvariant.h"
#include "qstringbuilder.h"
#if defined(Q_WS_WIN)
#   include "qt_windows.h"
#   include <time.h>
#endif
#include "private/qnumeric_p.h"
#include "private/qsystemlibrary_p.h"

QT_BEGIN_NAMESPACE

#if defined(Q_OS_SYMBIAN)
void qt_symbianUpdateSystemPrivate();
#endif

#ifndef QT_NO_SYSTEMLOCALE
static QSystemLocale *_systemLocale = 0;
Q_GLOBAL_STATIC_WITH_ARGS(QSystemLocale, QSystemLocale_globalSystemLocale, (true))
static QLocalePrivate *system_lp = 0;
Q_GLOBAL_STATIC(QLocalePrivate, globalLocalePrivate)
#endif

#ifdef QT_USE_ICU
extern bool qt_initIcu(const QString &localeName);
extern bool qt_u_strToUpper(const QString &str, QString *out, const QLocale &locale);
extern bool qt_u_strToLower(const QString &str, QString *out, const QLocale &locale);
#endif

/******************************************************************************
** Helpers for accessing Qt locale database
*/

QT_BEGIN_INCLUDE_NAMESPACE
#include "qlocale_data_p.h"
QT_END_INCLUDE_NAMESPACE

QLocale::Language QLocalePrivate::codeToLanguage(const QString &code)
{
    int len = code.length();
    if (len != 2 && len != 3)
        return QLocale::C;
    ushort uc1 = len-- > 0 ? code[0].toLower().unicode() : 0;
    ushort uc2 = len-- > 0 ? code[1].toLower().unicode() : 0;
    ushort uc3 = len-- > 0 ? code[2].toLower().unicode() : 0;

    if (uc1 == 'n' && uc2 == 'o' && uc3 == 0)
        uc2 = 'b';

    const unsigned char *c = language_code_list;
    for (; *c != 0; c += 3) {
        if (uc1 == c[0] && uc2 == c[1] && uc3 == c[2])
            return QLocale::Language((c - language_code_list)/3);
    }

    return QLocale::C;
}

QLocale::Script QLocalePrivate::codeToScript(const QString &code)
{
    int len = code.length();
    if (len != 4)
        return QLocale::AnyScript;

    // script is titlecased in our data
    unsigned char c0 = code.at(0).toUpper().toLatin1();
    unsigned char c1 = code.at(1).toLower().toLatin1();
    unsigned char c2 = code.at(2).toLower().toLatin1();
    unsigned char c3 = code.at(3).toLower().toLatin1();

    const unsigned char *c = script_code_list;
    for (int i = 0; i < QLocale::LastScript; ++i, c += 4) {
        if (c0 == c[0] && c1 == c[1] && c2 == c[2] && c3 == c[3])
            return QLocale::Script(i);
    }
    return QLocale::AnyScript;
}

QLocale::Country QLocalePrivate::codeToCountry(const QString &code)
{
    int len = code.length();
    if (len != 2 && len != 3)
        return QLocale::AnyCountry;
    ushort uc1 = len-- > 0 ? code[0].toUpper().unicode() : 0;
    ushort uc2 = len-- > 0 ? code[1].toUpper().unicode() : 0;
    ushort uc3 = len-- > 0 ? code[2].toUpper().unicode() : 0;

    const unsigned char *c = country_code_list;
    for (; *c != 0; c += 3) {
        if (uc1 == c[0] && uc2 == c[1] && uc3 == c[2])
            return QLocale::Country((c - country_code_list)/3);
    }

    return QLocale::AnyCountry;
}

QString QLocalePrivate::languageCode() const
{
    if (m_language_id == QLocale::AnyLanguage)
        return QString();
    if (m_language_id == QLocale::C)
        return QLatin1String("C");

    const unsigned char *c = language_code_list + 3*(uint(m_language_id));

    QString code(c[2] == 0 ? 2 : 3, Qt::Uninitialized);

    code[0] = ushort(c[0]);
    code[1] = ushort(c[1]);
    if (c[2] != 0)
        code[2] = ushort(c[2]);

    return code;
}

QString QLocalePrivate::scriptCode() const
{
    if (m_script_id == QLocale::AnyScript || m_script_id > QLocale::LastScript)
        return QString();
    const unsigned char *c = script_code_list + 4*(uint(m_script_id));
    return QString::fromLatin1((const char *)c, 4);
}

QString QLocalePrivate::countryCode() const
{
    if (m_country_id == QLocale::AnyCountry)
        return QString();

    const unsigned char *c = country_code_list + 3*(uint(m_country_id));

    QString code(c[2] == 0 ? 2 : 3, Qt::Uninitialized);

    code[0] = ushort(c[0]);
    code[1] = ushort(c[1]);
    if (c[2] != 0)
        code[2] = ushort(c[2]);

    return code;
}

QString QLocalePrivate::bcp47Name() const
{
    if (m_language_id == QLocale::AnyLanguage)
        return QString();
    if (m_language_id == QLocale::C)
        return QLatin1String("C");
    const unsigned char *lang = language_code_list + 3*(uint(m_language_id));
    const unsigned char *script =
            (m_script_id != QLocale::AnyScript ? script_code_list + 4*(uint(m_script_id)) : 0);
    const unsigned char *country =
            (m_country_id != QLocale::AnyCountry  ? country_code_list + 3*(uint(m_country_id)) : 0);
    char len = (lang[2] != 0 ? 3 : 2) + (script ? 4+1 : 0) + (country ? (country[2] != 0 ? 3 : 2)+1 : 0);
    QString name(len, Qt::Uninitialized);
    QChar *uc = name.data();
    *uc++ = ushort(lang[0]);
    *uc++ = ushort(lang[1]);
    if (lang[2] != 0)
        *uc++ = ushort(lang[2]);
    if (script) {
        *uc++ = QLatin1Char('-');
        *uc++ = ushort(script[0]);
        *uc++ = ushort(script[1]);
        *uc++ = ushort(script[2]);
        *uc++ = ushort(script[3]);
    }
    if (country) {
        *uc++ = QLatin1Char('-');
        *uc++ = ushort(country[0]);
        *uc++ = ushort(country[1]);
        if (country[2] != 0)
            *uc++ = ushort(country[2]);
    }
    return name;
}

const QLocalePrivate *QLocalePrivate::findLocale(QLocale::Language language, QLocale::Script script, QLocale::Country country)
{
    const unsigned language_id = language;
    const unsigned script_id = script;
    const unsigned country_id = country;

    uint idx = locale_index[language_id];

    const QLocalePrivate *d = locale_data + idx;

    if (idx == 0) // default language has no associated country
        return d;

    if (script == QLocale::AnyScript && country == QLocale::AnyCountry)
        return d;

    Q_ASSERT(d->languageId() == language_id);

    if (country == QLocale::AnyCountry) {
        while (d->m_language_id == language_id && d->m_script_id != script_id)
            ++d;
        if (d->m_language_id == language_id && d->m_script_id == script_id)
            return d;
    } else if (script == QLocale::AnyScript) {
        while (d->m_language_id == language_id) {
            if (d->m_script_id == script_id && d->m_country_id == country_id)
                return d;
            ++d;
        }
    } else {
        // both script and country are explicitly specified
        while (d->m_language_id == language_id) {
            if (d->m_script_id == script_id && d->m_country_id == country_id)
                return d;
            ++d;
        }
    }

    return locale_data + idx;
}

static bool parse_locale_tag(const QString &input, int &i, QString *result, const QString &separators)
{
    *result = QString(8, Qt::Uninitialized); // worst case according to BCP47
    QChar *pch = result->data();
    const QChar *uc = input.data() + i;
    const int l = input.length();
    int size = 0;
    for (; i < l && size < 8; ++i, ++size) {
        if (separators.contains(*uc))
            break;
        if (! ((uc->unicode() >= 'a' && uc->unicode() <= 'z') ||
               (uc->unicode() >= 'A' && uc->unicode() <= 'Z') ||
               (uc->unicode() >= '0' && uc->unicode() <= '9')) ) // latin only
            return false;
        *pch++ = *uc++;
    }
    result->truncate(size);
    return true;
}

bool qt_splitLocaleName(const QString &name, QString &lang, QString &script, QString &cntry)
{
    const int length = name.length();

    lang = script = cntry = QString();

    const QString separators = QLatin1String("_-.@");
    enum ParserState { NoState, LangState, ScriptState, CountryState };
    ParserState state = LangState;
    for (int i = 0; i < length && state != NoState; ) {
        QString value;
        if (!parse_locale_tag(name, i, &value, separators) ||value.isEmpty())
            break;
        QChar sep = i < length ? name.at(i) : QChar();
        switch (state) {
        case LangState:
            if (!sep.isNull() && !separators.contains(sep)) {
                state = NoState;
                break;
            }
            lang = value;
            if (i == length) {
                // just language was specified
                state = NoState;
                break;
            }
            state = ScriptState;
            break;
        case ScriptState: {
            QString scripts = QString::fromLatin1((const char *)script_code_list, sizeof(script_code_list));
            if (value.length() == 4 && scripts.indexOf(value) % 4 == 0) {
                // script name is always 4 characters
                script = value;
                state = CountryState;
            } else {
                // it wasn't a script, maybe it is a country then?
                cntry = value;
                state = NoState;
            }
            break;
        }
        case CountryState:
            cntry = value;
            state = NoState;
            break;
        case NoState:
            // shouldn't happen
            qWarning("QLocale: This should never happen");
            break;
        }
        ++i;
    }
    return lang.length() == 2 || lang.length() == 3;
}

void QLocalePrivate::getLangAndCountry(const QString &name, QLocale::Language &lang,
                                       QLocale::Script &script, QLocale::Country &cntry)
{
    lang = QLocale::C;
    script = QLocale::AnyScript;
    cntry = QLocale::AnyCountry;

    QString lang_code;
    QString script_code;
    QString cntry_code;
    if (!qt_splitLocaleName(name, lang_code, script_code, cntry_code))
        return;

    lang = QLocalePrivate::codeToLanguage(lang_code);
    if (lang == QLocale::C)
        return;
    script = QLocalePrivate::codeToScript(script_code);
    cntry = QLocalePrivate::codeToCountry(cntry_code);
}

static const QLocalePrivate *findLocale(const QString &name)
{
    QLocale::Language lang;
    QLocale::Script script;
    QLocale::Country cntry;
    QLocalePrivate::getLangAndCountry(name, lang, script, cntry);

    return QLocalePrivate::findLocale(lang, script, cntry);
}

QString qt_readEscapedFormatString(const QString &format, int *idx)
{
    int &i = *idx;

    Q_ASSERT(format.at(i) == QLatin1Char('\''));
    ++i;
    if (i == format.size())
        return QString();
    if (format.at(i).unicode() == '\'') { // "''" outside of a quoted stirng
        ++i;
        return QLatin1String("'");
    }

    QString result;

    while (i < format.size()) {
        if (format.at(i).unicode() == '\'') {
            if (i + 1 < format.size() && format.at(i + 1).unicode() == '\'') {
                // "''" inside of a quoted string
                result.append(QLatin1Char('\''));
                i += 2;
            } else {
                break;
            }
        } else {
            result.append(format.at(i++));
        }
    }
    if (i < format.size())
        ++i;

    return result;
}

int qt_repeatCount(const QString &s, int i)
{
    QChar c = s.at(i);
    int j = i + 1;
    while (j < s.size() && s.at(j) == c)
        ++j;
    return j - i;
}

static const QLocalePrivate *default_lp = 0;
static uint default_number_options = 0;

#ifndef QT_NO_SYSTEMLOCALE


/******************************************************************************
** Default system locale behavior
*/

QSystemLocale::QSystemLocale()
{
    delete _systemLocale;
    _systemLocale = this;

    if (system_lp)
        system_lp->m_language_id = 0;
}

QSystemLocale::QSystemLocale(bool)
{ }

QSystemLocale::~QSystemLocale()
{
    if (_systemLocale == this) {
        _systemLocale = 0;

        if (system_lp)
            system_lp->m_language_id = 0;
    }
}

static const QSystemLocale *systemLocale()
{
    if (_systemLocale)
        return _systemLocale;
    return QSystemLocale_globalSystemLocale();
}

void QLocalePrivate::updateSystemPrivate()
{
    const QSystemLocale *sys_locale = systemLocale();
    if (!system_lp)
        system_lp = globalLocalePrivate();

    // tell the object that the system locale has changed.
    sys_locale->query(QSystemLocale::LocaleChanged, QVariant());

    *system_lp = *sys_locale->fallbackLocale().d();

#if defined(Q_OS_SYMBIAN)
    qt_symbianUpdateSystemPrivate();
#endif

    QVariant res = sys_locale->query(QSystemLocale::LanguageId, QVariant());
    if (!res.isNull()) {
        system_lp->m_language_id = res.toInt();
        system_lp->m_script_id = QLocale::AnyScript; // default for compatibility
    }
    res = sys_locale->query(QSystemLocale::CountryId, QVariant());
    if (!res.isNull()) {
        system_lp->m_country_id = res.toInt();
        system_lp->m_script_id = QLocale::AnyScript; // default for compatibility
    }
    res = sys_locale->query(QSystemLocale::ScriptId, QVariant());
    if (!res.isNull())
        system_lp->m_script_id = res.toInt();

    res = sys_locale->query(QSystemLocale::DecimalPoint, QVariant());
    if (!res.isNull())
        system_lp->m_decimal = res.toString().at(0).unicode();

    res = sys_locale->query(QSystemLocale::GroupSeparator, QVariant());
    if (!res.isNull())
        system_lp->m_group = res.toString().at(0).unicode();

    res = sys_locale->query(QSystemLocale::ZeroDigit, QVariant());
    if (!res.isNull())
        system_lp->m_zero = res.toString().at(0).unicode();

    res = sys_locale->query(QSystemLocale::NegativeSign, QVariant());
    if (!res.isNull())
        system_lp->m_minus = res.toString().at(0).unicode();

    res = sys_locale->query(QSystemLocale::PositiveSign, QVariant());
    if (!res.isNull())
        system_lp->m_plus = res.toString().at(0).unicode();

#ifdef QT_USE_ICU
    if (!default_lp)
        qt_initIcu(system_lp->bcp47Name());
#endif

}
#endif

static const QLocalePrivate *systemPrivate()
{
#ifndef QT_NO_SYSTEMLOCALE
    // copy over the information from the fallback locale and modify
    if (!system_lp || system_lp->m_language_id == 0)
        QLocalePrivate::updateSystemPrivate();

    return system_lp;
#else
    return locale_data;
#endif
}

static const QLocalePrivate *defaultPrivate()
{
    if (!default_lp)
        default_lp = systemPrivate();
    return default_lp;
}

static QString getLocaleListData(const ushort *data, int size, int index)
{
    static const ushort separator = ';';
    while (index && size > 0) {
        while (*data != separator)
            ++data, --size;
        --index;
        ++data;
        --size;
    }
    const ushort *end = data;
    while (size > 0 && *end != separator)
        ++end, --size;
    if (end-data == 0)
        return QString();
    return QString::fromRawData(reinterpret_cast<const QChar*>(data), end-data);
}

static inline QString getLocaleData(const ushort *data, int size)
{
    return size ? QString::fromRawData(reinterpret_cast<const QChar*>(data), size) : QString();
}


#ifndef QT_NO_DATASTREAM
QDataStream &operator<<(QDataStream &ds, const QLocale &l)
{
    ds << l.name();
    return ds;
}

QDataStream &operator>>(QDataStream &ds, QLocale &l)
{
    QString s;
    ds >> s;
    l = QLocale(s);
    return ds;
}
#endif // QT_NO_DATASTREAM


static const int locale_data_size = sizeof(locale_data)/sizeof(QLocalePrivate) - 1;

static const QLocalePrivate *dataPointerHelper(quint16 index)
{
#ifndef QT_NO_SYSTEMLOCALE
    Q_ASSERT(index <= locale_data_size);
    if (index == locale_data_size)
        return system_lp;
#else
    Q_ASSERT(index < locale_data_size);
#endif

    return &locale_data[index];
}

static quint16 localePrivateIndex(const QLocalePrivate *p)
{
#ifndef QT_NO_SYSTEMLOCALE
    Q_ASSERT((p >= locale_data && p - locale_data < locale_data_size)
             || (p != 0 && p == system_lp));
    quint16 index = p == system_lp ? locale_data_size : p - locale_data;
#else
    Q_ASSERT(p >= locale_data && p - locale_data < locale_data_size);
    quint16 index = p - locale_data;
#endif

    return index;
}

QLocale::QLocale(const QString &name)
    : v(0)
{
    p.numberOptions = 0;
    p.index = localePrivateIndex(findLocale(name));
}

QLocale::QLocale()
    : v(0)
{
    p.numberOptions = default_number_options;
    p.index = localePrivateIndex(defaultPrivate());
}

QLocale::QLocale(Language language, Country country)
    : v(0)
{
    const QLocalePrivate *d = QLocalePrivate::findLocale(language, QLocale::AnyScript, country);

    // If not found, should default to system
    if (d->languageId() == QLocale::C && language != QLocale::C) {
        p.numberOptions = default_number_options;
        p.index = localePrivateIndex(defaultPrivate());
    } else {
        p.numberOptions = 0;
        p.index = localePrivateIndex(d);
    }
}
\
QLocale::QLocale(Language language, Script script, Country country)
    : v(0)
{
    const QLocalePrivate *d = QLocalePrivate::findLocale(language, script, country);

    // If not found, should default to system
    if (d->languageId() == QLocale::C && language != QLocale::C) {
        p.numberOptions = default_number_options;
        p.index = localePrivateIndex(defaultPrivate());
    } else {
        p.numberOptions = 0;
        p.index = localePrivateIndex(d);
    }
}

QLocale::QLocale(const QLocale &other)
{
    v = other.v;
}

const QLocalePrivate *QLocale::d() const
{
    return dataPointerHelper(p.index);
}

QLocale &QLocale::operator=(const QLocale &other)
{
    v = other.v;
    return *this;
}

void QLocale::setNumberOptions(NumberOptions options)
{
    p.numberOptions = options;
}

QLocale::NumberOptions QLocale::numberOptions() const
{
    return static_cast<NumberOption>(p.numberOptions);
}

QString QLocale::quoteString(const QString &str, QuotationStyle style) const
{
    return quoteString(&str, style);
}

QString QLocale::quoteString(const QStringRef &str, QuotationStyle style) const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res;
        if (style == QLocale::AlternateQuotation)
            res = systemLocale()->query(QSystemLocale::StringToAlternateQuotation, QVariant::fromValue(str));
        if (res.isNull() || style == QLocale::StandardQuotation)
            res = systemLocale()->query(QSystemLocale::StringToStandardQuotation, QVariant::fromValue(str));
        if (!res.isNull())
            return res.toString();
    }
#endif

    if (style == QLocale::StandardQuotation)
        return QChar(d()->m_quotation_start) % str % QChar(d()->m_quotation_end);
    else
        return QChar(d()->m_alternate_quotation_start) % str % QChar(d()->m_alternate_quotation_end);
}

QString QLocale::createSeparatedList(const QStringList &list) const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res;
        res = systemLocale()->query(QSystemLocale::ListToSeparatedString, QVariant::fromValue(list));

        if (!res.isNull())
            return res.toString();
    }
#endif

    const int size = list.size();
    if (size == 1) {
        return list.at(0);
    } else if (size == 2) {
        QString format = getLocaleData(list_pattern_part_data + d()->m_list_pattern_part_two_idx, d()->m_list_pattern_part_two_size);
        return format.arg(list.at(0), list.at(1));
    } else if (size > 2) {
        QString formatStart = getLocaleData(list_pattern_part_data + d()->m_list_pattern_part_start_idx, d()->m_list_pattern_part_start_size);
        QString formatMid = getLocaleData(list_pattern_part_data + d()->m_list_pattern_part_mid_idx, d()->m_list_pattern_part_mid_size);
        QString formatEnd = getLocaleData(list_pattern_part_data + d()->m_list_pattern_part_end_idx, d()->m_list_pattern_part_end_size);
        QString result = formatStart.arg(list.at(0), list.at(1));
        for (int i = 2; i < size - 1; ++i)
            result = formatMid.arg(result, list.at(i));
        result = formatEnd.arg(result, list.at(size - 1));
        return result;
    }

    return QString();
}

void QLocale::setDefault(const QLocale &locale)
{
    default_lp = locale.d();
    default_number_options = locale.numberOptions();

#ifdef QT_USE_ICU
    qt_initIcu(locale.bcp47Name());
#endif
}

QLocale::Language QLocale::language() const
{
    return Language(d()->languageId());
}

QLocale::Script QLocale::script() const
{
    return Script(d()->m_script_id);
}

QLocale::Country QLocale::country() const
{
    return Country(d()->countryId());
}

QString QLocale::name() const
{
    const QLocalePrivate *dd = d();

    if (dd->m_language_id == QLocale::AnyLanguage)
        return QString();
    if (dd->m_language_id == QLocale::C)
        return QLatin1String("C");

    const unsigned char *c = language_code_list + 3*(uint(dd->m_language_id));

    QString result(7, Qt::Uninitialized);
    ushort *data = (ushort *)result.unicode();
    const ushort *begin = data;

    *data++ = ushort(c[0]);
    *data++ = ushort(c[1]);
    if (c[2] != 0)
        *data++ = ushort(c[2]);
    if (dd->m_country_id != AnyCountry) {
        *data++ = '_';
        const unsigned char *c = country_code_list + 3*(uint(dd->m_country_id));
        *data++ = ushort(c[0]);
        *data++ = ushort(c[1]);
        if (c[2] != 0)
            *data++ = ushort(c[2]);
    }
    result.resize(data - begin);

    return result;
}

QString QLocale::bcp47Name() const
{
    return d()->bcp47Name();
}

QString QLocale::languageToString(Language language)
{
    if (uint(language) > uint(QLocale::LastLanguage))
        return QLatin1String("Unknown");
    return QLatin1String(language_name_list + language_name_index[language]);
}

QString QLocale::countryToString(Country country)
{
    if (uint(country) > uint(QLocale::LastCountry))
        return QLatin1String("Unknown");
    return QLatin1String(country_name_list + country_name_index[country]);
}

QString QLocale::scriptToString(QLocale::Script script)
{
    if (uint(script) > uint(QLocale::LastScript))
        return QLatin1String("Unknown");
    return QLatin1String(script_name_list + script_name_index[script]);
}

short QLocale::toShort(const QString &s, bool *ok, int base) const
{
    qlonglong i = toLongLong(s, ok, base);
    if (i < SHRT_MIN || i > SHRT_MAX) {
        if (ok != 0)
            *ok = false;
        return 0;
    }
    return short(i);
}

ushort QLocale::toUShort(const QString &s, bool *ok, int base) const
{
    qulonglong i = toULongLong(s, ok, base);
    if (i > USHRT_MAX) {
        if (ok != 0)
            *ok = false;
        return 0;
    }
    return ushort(i);
}

int QLocale::toInt(const QString &s, bool *ok, int base) const
{
    qlonglong i = toLongLong(s, ok, base);
    if (i < INT_MIN || i > INT_MAX) {
        if (ok != 0)
            *ok = false;
        return 0;
    }
    return int(i);
}

uint QLocale::toUInt(const QString &s, bool *ok, int base) const
{
    qulonglong i = toULongLong(s, ok, base);
    if (i > UINT_MAX) {
        if (ok != 0)
            *ok = false;
        return 0;
    }
    return uint(i);
}

qlonglong QLocale::toLongLong(const QString &s, bool *ok, int base) const
{
    QLocalePrivate::GroupSeparatorMode mode
        = p.numberOptions & RejectGroupSeparator
            ? QLocalePrivate::FailOnGroupSeparators
            : QLocalePrivate::ParseGroupSeparators;

    return d()->stringToLongLong(s, base, ok, mode);
}

// ### Qt5: make the return type for toULongLong() qulonglong.

qlonglong QLocale::toULongLong(const QString &s, bool *ok, int base) const
{
    QLocalePrivate::GroupSeparatorMode mode
        = p.numberOptions & RejectGroupSeparator
            ? QLocalePrivate::FailOnGroupSeparators
            : QLocalePrivate::ParseGroupSeparators;

    return d()->stringToUnsLongLong(s, base, ok, mode);
}

#define QT_MAX_FLOAT 3.4028234663852886e+38

float QLocale::toFloat(const QString &s, bool *ok) const
{
    bool myOk;
    double d = toDouble(s, &myOk);
    if (!myOk || d > QT_MAX_FLOAT || d < -QT_MAX_FLOAT) {
        if (ok != 0)
            *ok = false;
        return 0.0;
    }
    if (ok != 0)
        *ok = true;
    return float(d);
}

double QLocale::toDouble(const QString &s, bool *ok) const
{
    QLocalePrivate::GroupSeparatorMode mode
        = p.numberOptions & RejectGroupSeparator
            ? QLocalePrivate::FailOnGroupSeparators
            : QLocalePrivate::ParseGroupSeparators;

    return d()->stringToDouble(s, ok, mode);
}

QString QLocale::toString(qlonglong i) const
{
    int flags = p.numberOptions & OmitGroupSeparator
                    ? 0
                    : QLocalePrivate::ThousandsGroup;

    return d()->longLongToString(i, -1, 10, -1, flags);
}

QString QLocale::toString(qulonglong i) const
{
    int flags = p.numberOptions & OmitGroupSeparator
                    ? 0
                    : QLocalePrivate::ThousandsGroup;

    return d()->unsLongLongToString(i, -1, 10, -1, flags);
}

QString QLocale::toString(const QDate &date, const QString &format) const
{
    return d()->dateTimeToString(format, &date, 0, this);
}

QString QLocale::toString(const QDate &date, FormatType format) const
{
    if (!date.isValid())
        return QString();

#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(format == LongFormat
                                             ? QSystemLocale::DateToStringLong : QSystemLocale::DateToStringShort,
                                             date);
        if (!res.isNull())
            return res.toString();
    }
#endif

    QString format_str = dateFormat(format);
    return toString(date, format_str);
}

static bool timeFormatContainsAP(const QString &format)
{
    int i = 0;
    while (i < format.size()) {
        if (format.at(i).unicode() == '\'') {
            qt_readEscapedFormatString(format, &i);
            continue;
        }

        if (format.at(i).toLower().unicode() == 'a')
            return true;

        ++i;
    }
    return false;
}

static QString timeZone()
{
#if defined(Q_OS_WINCE)
    TIME_ZONE_INFORMATION info;
    DWORD res = GetTimeZoneInformation(&info);
    if (res == TIME_ZONE_ID_UNKNOWN)
        return QString();
    return QString::fromWCharArray(info.StandardName);
#elif defined(Q_OS_WIN)
    _tzset();
# if defined(_MSC_VER) && _MSC_VER >= 1400
    size_t returnSize = 0;
    char timeZoneName[512];
    if (_get_tzname(&returnSize, timeZoneName, 512, 1))
        return QString();
    return QString::fromLocal8Bit(timeZoneName);
# else
    return QString::fromLocal8Bit(_tzname[1]);
# endif
#elif defined(Q_OS_VXWORKS)
    return QString();
#else
    tzset();
    return QString::fromLocal8Bit(tzname[1]);
#endif
}

QString QLocale::toString(const QTime &time, const QString &format) const
{
    return d()->dateTimeToString(format, 0, &time, this);
}

QString QLocale::toString(const QDateTime &dateTime, const QString &format) const
{
    const QDate dt = dateTime.date();
    const QTime tm = dateTime.time();
    return d()->dateTimeToString(format, &dt, &tm, this);
}

QString QLocale::toString(const QDateTime &dateTime, FormatType format) const
{
    if (!dateTime.isValid())
        return QString();

#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(format == LongFormat
                                             ? QSystemLocale::DateTimeToStringLong
                                             : QSystemLocale::DateTimeToStringShort,
                                             dateTime);
        if (!res.isNull())
            return res.toString();
    }
#endif

    const QString format_str = dateTimeFormat(format);
    return toString(dateTime, format_str);
}


QString QLocale::toString(const QTime &time, FormatType format) const
{
    if (!time.isValid())
        return QString();

#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(format == LongFormat
                                             ? QSystemLocale::TimeToStringLong : QSystemLocale::TimeToStringShort,
                                             time);
        if (!res.isNull())
            return res.toString();
    }
#endif

    QString format_str = timeFormat(format);
    return toString(time, format_str);
}

QString QLocale::dateFormat(FormatType format) const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(format == LongFormat
                                             ? QSystemLocale::DateFormatLong : QSystemLocale::DateFormatShort,
                                             QVariant());
        if (!res.isNull())
            return res.toString();
    }
#endif

    quint32 idx, size;
    switch (format) {
    case LongFormat:
        idx = d()->m_long_date_format_idx;
        size = d()->m_long_date_format_size;
        break;
    default:
        idx = d()->m_short_date_format_idx;
        size = d()->m_short_date_format_size;
        break;
    }
    return getLocaleData(date_format_data + idx, size);
}

QString QLocale::timeFormat(FormatType format) const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(format == LongFormat
                                             ? QSystemLocale::TimeFormatLong : QSystemLocale::TimeFormatShort,
                                             QVariant());
        if (!res.isNull())
            return res.toString();
    }
#endif

    quint32 idx, size;
    switch (format) {
    case LongFormat:
        idx = d()->m_long_time_format_idx;
        size = d()->m_long_time_format_size;
        break;
    default:
        idx = d()->m_short_time_format_idx;
        size = d()->m_short_time_format_size;
        break;
    }
    return getLocaleData(time_format_data + idx, size);
}

QString QLocale::dateTimeFormat(FormatType format) const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(format == LongFormat
                                             ? QSystemLocale::DateTimeFormatLong
                                             : QSystemLocale::DateTimeFormatShort,
                                             QVariant());
        if (!res.isNull()) {
            return res.toString();
        }
    }
#endif
    return dateFormat(format) + QLatin1Char(' ') + timeFormat(format);
}

#ifndef QT_NO_DATESTRING
QTime QLocale::toTime(const QString &string, FormatType format) const
{
    return toTime(string, timeFormat(format));
}
#endif

#ifndef QT_NO_DATESTRING
QDate QLocale::toDate(const QString &string, FormatType format) const
{
    return toDate(string, dateFormat(format));
}
#endif

#ifndef QT_NO_DATESTRING
QDateTime QLocale::toDateTime(const QString &string, FormatType format) const
{
    return toDateTime(string, dateTimeFormat(format));
}
#endif

#ifndef QT_NO_DATESTRING
QTime QLocale::toTime(const QString &string, const QString &format) const
{
    QTime time;
#ifndef QT_BOOTSTRAPPED
    QDateTimeParser dt(QVariant::Time, QDateTimeParser::FromString);
    dt.defaultLocale = *this;
    if (dt.parseFormat(format))
        dt.fromString(string, 0, &time);
#else
    Q_UNUSED(string);
    Q_UNUSED(format);
#endif
    return time;
}
#endif

#ifndef QT_NO_DATESTRING
QDate QLocale::toDate(const QString &string, const QString &format) const
{
    QDate date;
#ifndef QT_BOOTSTRAPPED
    QDateTimeParser dt(QVariant::Date, QDateTimeParser::FromString);
    dt.defaultLocale = *this;
    if (dt.parseFormat(format))
        dt.fromString(string, &date, 0);
#else
    Q_UNUSED(string);
    Q_UNUSED(format);
#endif
    return date;
}
#endif

#ifndef QT_NO_DATESTRING
QDateTime QLocale::toDateTime(const QString &string, const QString &format) const
{
#ifndef QT_BOOTSTRAPPED
    QTime time;
    QDate date;

    QDateTimeParser dt(QVariant::DateTime, QDateTimeParser::FromString);
    dt.defaultLocale = *this;
    if (dt.parseFormat(format) && dt.fromString(string, &date, &time))
        return QDateTime(date, time);
#else
    Q_UNUSED(string);
    Q_UNUSED(format);
#endif
    return QDateTime(QDate(), QTime(-1, -1, -1));
}
#endif


QChar QLocale::decimalPoint() const
{
    return d()->decimal();
}

QChar QLocale::groupSeparator() const
{
    return d()->group();
}

QChar QLocale::percent() const
{
    return d()->percent();
}

QChar QLocale::zeroDigit() const
{
    return d()->zero();
}

QChar QLocale::negativeSign() const
{
    return d()->minus();
}

QChar QLocale::positiveSign() const
{
    return d()->plus();
}

QChar QLocale::exponential() const
{
    return d()->exponential();
}

static bool qIsUpper(char c)
{
    return c >= 'A' && c <= 'Z';
}

static char qToLower(char c)
{
    if (c >= 'A' && c <= 'Z')
        return c - 'A' + 'a';
    else
        return c;
}

QString QLocale::toString(double i, char f, int prec) const
{
    QLocalePrivate::DoubleForm form = QLocalePrivate::DFDecimal;
    uint flags = 0;

    if (qIsUpper(f))
        flags = QLocalePrivate::CapitalEorX;
    f = qToLower(f);

    switch (f) {
        case 'f':
            form = QLocalePrivate::DFDecimal;
            break;
        case 'e':
            form = QLocalePrivate::DFExponent;
            break;
        case 'g':
            form = QLocalePrivate::DFSignificantDigits;
            break;
        default:
            break;
    }

    if (!(p.numberOptions & OmitGroupSeparator))
        flags |= QLocalePrivate::ThousandsGroup;
    return d()->doubleToString(i, prec, form, -1, flags);
}

QLocale QLocale::system()
{
    QLocale result(C);
    result.p.index = localePrivateIndex(systemPrivate());
    return result;
}


QList<QLocale> QLocale::matchingLocales(QLocale::Language language,
                                        QLocale::Script script,
                                        QLocale::Country country)
{
    if (uint(language) > QLocale::LastLanguage || uint(script) > QLocale::LastScript ||
            uint(country) > QLocale::LastCountry)
        return QList<QLocale>();

    QList<QLocale> result;
    const QLocalePrivate *d = locale_data;
    if (language == QLocale::AnyLanguage && script == QLocale::AnyScript && country == QLocale::AnyCountry)
        result.reserve(locale_data_size);
    if (language != QLocale::C)
        d += locale_index[language];
    while ( (d != locale_data + locale_data_size)
            && (language == QLocale::AnyLanguage || d->m_language_id == uint(language))) {
        QLocale locale(QLocale::C);
        locale.p.index = localePrivateIndex(d);
        result.append(locale);
        ++d;
    }
    return result;
}

QList<QLocale::Country> QLocale::countriesForLanguage(Language language)
{
    QList<Country> result;

    unsigned language_id = language;
    uint idx = locale_index[language_id];

    if (language == C) {
        result << AnyCountry;
        return result;
    }

    const QLocalePrivate *d = locale_data + idx;

    while (d->languageId() == language_id) {
        result << static_cast<Country>(d->countryId());
        ++d;
    }

    return result;
}

QString QLocale::monthName(int month, FormatType type) const
{
    if (month < 1 || month > 12)
        return QString();

#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(type == LongFormat
                                             ? QSystemLocale::MonthNameLong : QSystemLocale::MonthNameShort,
                                             month);
        if (!res.isNull())
            return res.toString();
    }
#endif

    quint32 idx, size;
    switch (type) {
    case QLocale::LongFormat:
        idx = d()->m_long_month_names_idx;
        size = d()->m_long_month_names_size;
        break;
    case QLocale::ShortFormat:
        idx = d()->m_short_month_names_idx;
        size = d()->m_short_month_names_size;
        break;
    case QLocale::NarrowFormat:
        idx = d()->m_narrow_month_names_idx;
        size = d()->m_narrow_month_names_size;
        break;
    default:
        return QString();
    }
    return getLocaleListData(months_data + idx, size, month - 1);
}

QString QLocale::standaloneMonthName(int month, FormatType type) const
{
    if (month < 1 || month > 12)
        return QString();

#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(type == LongFormat
                                             ? QSystemLocale::StandaloneMonthNameLong : QSystemLocale::StandaloneMonthNameShort,
                                             month);
        if (!res.isNull())
            return res.toString();
    }
#endif

    quint32 idx, size;
    switch (type) {
    case QLocale::LongFormat:
        idx = d()->m_standalone_long_month_names_idx;
        size = d()->m_standalone_long_month_names_size;
        break;
    case QLocale::ShortFormat:
        idx = d()->m_standalone_short_month_names_idx;
        size = d()->m_standalone_short_month_names_size;
        break;
    case QLocale::NarrowFormat:
        idx = d()->m_standalone_narrow_month_names_idx;
        size = d()->m_standalone_narrow_month_names_size;
        break;
    default:
        return QString();
    }
    QString name = getLocaleListData(standalone_months_data + idx, size, month - 1);
    if (name.isEmpty())
        return monthName(month, type);
    return name;
}

QString QLocale::dayName(int day, FormatType type) const
{
    if (day < 1 || day > 7)
        return QString();

#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(type == LongFormat
                                             ? QSystemLocale::DayNameLong : QSystemLocale::DayNameShort,
                                             day);
        if (!res.isNull())
            return res.toString();
    }
#endif
    if (day == 7)
        day = 0;

    quint32 idx, size;
    switch (type) {
    case QLocale::LongFormat:
        idx = d()->m_long_day_names_idx;
        size = d()->m_long_day_names_size;
        break;
    case QLocale::ShortFormat:
        idx = d()->m_short_day_names_idx;
        size = d()->m_short_day_names_size;
        break;
    case QLocale::NarrowFormat:
        idx = d()->m_narrow_day_names_idx;
        size = d()->m_narrow_day_names_size;
        break;
    default:
        return QString();
    }
    return getLocaleListData(days_data + idx, size, day);
}

QString QLocale::standaloneDayName(int day, FormatType type) const
{
    if (day < 1 || day > 7)
        return QString();

#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(type == LongFormat
                                             ? QSystemLocale::DayNameLong : QSystemLocale::DayNameShort,
                                             day);
        if (!res.isNull())
            return res.toString();
    }
#endif
    if (day == 7)
        day = 0;

    quint32 idx, size;
    switch (type) {
    case QLocale::LongFormat:
        idx = d()->m_standalone_long_day_names_idx;
        size = d()->m_standalone_long_day_names_size;
        break;
    case QLocale::ShortFormat:
        idx = d()->m_standalone_short_day_names_idx;
        size = d()->m_standalone_short_day_names_size;
        break;
    case QLocale::NarrowFormat:
        idx = d()->m_standalone_narrow_day_names_idx;
        size = d()->m_standalone_narrow_day_names_size;
        break;
    default:
        return QString();
    }
    QString name = getLocaleListData(days_data + idx, size, day);
    if (name.isEmpty())
        return dayName(day == 0 ? 7 : day, type);
    return name;
}

Qt::DayOfWeek QLocale::firstDayOfWeek() const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(QSystemLocale::FirstDayOfWeek, QVariant());
        if (!res.isNull())
            return static_cast<Qt::DayOfWeek>(res.toUInt());
    }
#endif
    return static_cast<Qt::DayOfWeek>(d()->m_first_day_of_week);
}

QLocale::MeasurementSystem QLocalePrivate::measurementSystem() const
{
    for (int i = 0; i < ImperialMeasurementSystemsCount; ++i) {
        if (ImperialMeasurementSystems[i].languageId == m_language_id
            && ImperialMeasurementSystems[i].countryId == m_country_id) {
            return QLocale::ImperialSystem;
        }
    }
    return QLocale::MetricSystem;
}

QList<Qt::DayOfWeek> QLocale::weekdays() const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(QSystemLocale::Weekdays, QVariant());
        if (!res.isNull())
            return static_cast<QList<Qt::DayOfWeek> >(res.value<QList<Qt::DayOfWeek> >());
    }
#endif
    QList<Qt::DayOfWeek> weekdays;
    quint16 weekendStart = d()->m_weekend_start;
    quint16 weekendEnd = d()->m_weekend_end;
    for (int day = Qt::Monday; day <= Qt::Sunday; day++) {
        if ((weekendEnd >= weekendStart && (day < weekendStart || day > weekendEnd)) ||
            (weekendEnd < weekendStart && (day > weekendEnd && day < weekendStart)))
                weekdays << static_cast<Qt::DayOfWeek>(day);
    }
    return weekdays;
}

QLocale::MeasurementSystem QLocale::measurementSystem() const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(QSystemLocale::MeasurementSystem, QVariant());
        if (!res.isNull())
            return MeasurementSystem(res.toInt());
    }
#endif

    return d()->measurementSystem();
}

Qt::LayoutDirection QLocale::textDirection() const
{
    Language lang = language();
    if (lang == QLocale::Arabic ||
        lang == QLocale::Hebrew ||
        lang == QLocale::Persian ||
        lang == QLocale::Urdu ||
        lang == QLocale::Syriac)
        return Qt::RightToLeft;

    return Qt::LeftToRight;
}

QString QLocale::toUpper(const QString &str) const
{
#ifdef QT_USE_ICU
    {
        QString result;
        if (qt_u_strToUpper(str, &result, *this))
            return result;
        // else fall through and use Qt's toUpper
    }
#endif
    return str.toUpper();
}

QString QLocale::toLower(const QString &str) const
{
#ifdef QT_USE_ICU
    {
        QString result;
        if (qt_u_strToLower(str, &result, *this))
            return result;
        // else fall through and use Qt's toUpper
    }
#endif
    return str.toLower();
}


QString QLocale::amText() const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(QSystemLocale::AMText, QVariant());
        if (!res.isNull())
            return res.toString();
    }
#endif
    return getLocaleData(am_data + d()->m_am_idx, d()->m_am_size);
}

QString QLocale::pmText() const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(QSystemLocale::PMText, QVariant());
        if (!res.isNull())
            return res.toString();
    }
#endif
    return getLocaleData(pm_data + d()->m_pm_idx, d()->m_pm_size);
}


QString QLocalePrivate::dateTimeToString(const QString &format, const QDate *date, const QTime *time,
                                         const QLocale *q) const
{
    Q_ASSERT(date || time);
    if ((date && !date->isValid()) || (time && !time->isValid()))
        return QString();
    const bool format_am_pm = time && timeFormatContainsAP(format);

    enum { AM, PM } am_pm = AM;
    int hour12 = time ? time->hour() : -1;
    if (time) {
        if (hour12 == 0) {
            am_pm = AM;
            hour12 = 12;
        } else if (hour12 < 12) {
            am_pm = AM;
        } else if (hour12 == 12) {
            am_pm = PM;
        } else {
            am_pm = PM;
            hour12 -= 12;
        }
    }

    QString result;

    int i = 0;
    while (i < format.size()) {
        if (format.at(i).unicode() == '\'') {
            result.append(qt_readEscapedFormatString(format, &i));
            continue;
        }

        const QChar c = format.at(i);
        int repeat = qt_repeatCount(format, i);
        bool used = false;
        if (date) {
            switch (c.unicode()) {
            case 'y':
                used = true;
                if (repeat >= 4)
                    repeat = 4;
                else if (repeat >= 2)
                    repeat = 2;

                switch (repeat) {
                case 4:
                    result.append(longLongToString(date->year()));
                    break;
                case 2:
                    result.append(longLongToString(date->year() % 100, -1, 10, 2,
                                                   QLocalePrivate::ZeroPadded));
                    break;
                default:
                    repeat = 1;
                    result.append(c);
                    break;
                }
                break;

            case 'M':
                used = true;
                repeat = qMin(repeat, 4);
                switch (repeat) {
                case 1:
                    result.append(longLongToString(date->month()));
                    break;
                case 2:
                    result.append(longLongToString(date->month(), -1, 10, 2, QLocalePrivate::ZeroPadded));
                    break;
                case 3:
                    result.append(q->monthName(date->month(), QLocale::ShortFormat));
                    break;
                case 4:
                    result.append(q->monthName(date->month(), QLocale::LongFormat));
                    break;
                }
                break;

            case 'd':
                used = true;
                repeat = qMin(repeat, 4);
                switch (repeat) {
                case 1:
                    result.append(longLongToString(date->day()));
                    break;
                case 2:
                    result.append(longLongToString(date->day(), -1, 10, 2, QLocalePrivate::ZeroPadded));
                    break;
                case 3:
                    result.append(q->dayName(date->dayOfWeek(), QLocale::ShortFormat));
                    break;
                case 4:
                    result.append(q->dayName(date->dayOfWeek(), QLocale::LongFormat));
                    break;
                }
                break;

            default:
                break;
            }
        }
        if (!used && time) {
            switch (c.unicode()) {
            case 'h': {
                used = true;
                repeat = qMin(repeat, 2);
                const int hour = format_am_pm ? hour12 : time->hour();

                switch (repeat) {
                case 1:
                    result.append(longLongToString(hour));
                    break;
                case 2:
                    result.append(longLongToString(hour, -1, 10, 2, QLocalePrivate::ZeroPadded));
                    break;
                }
                break;
            }
            case 'H':
                used = true;
                repeat = qMin(repeat, 2);
                switch (repeat) {
                case 1:
                    result.append(longLongToString(time->hour()));
                    break;
                case 2:
                    result.append(longLongToString(time->hour(), -1, 10, 2, QLocalePrivate::ZeroPadded));
                    break;
                }
                break;

            case 'm':
                used = true;
                repeat = qMin(repeat, 2);
                switch (repeat) {
                case 1:
                    result.append(longLongToString(time->minute()));
                    break;
                case 2:
                    result.append(longLongToString(time->minute(), -1, 10, 2, QLocalePrivate::ZeroPadded));
                    break;
                }
                break;

            case 's':
                used = true;
                repeat = qMin(repeat, 2);
                switch (repeat) {
                case 1:
                    result.append(longLongToString(time->second()));
                    break;
                case 2:
                    result.append(longLongToString(time->second(), -1, 10, 2, QLocalePrivate::ZeroPadded));
                    break;
                }
                break;

            case 'a':
                used = true;
                if (i + 1 < format.length() && format.at(i + 1).unicode() == 'p') {
                    repeat = 2;
                } else {
                    repeat = 1;
                }
                result.append(am_pm == AM ? q->amText().toLower() : q->pmText().toLower());
                break;

            case 'A':
                used = true;
                if (i + 1 < format.length() && format.at(i + 1).unicode() == 'P') {
                    repeat = 2;
                } else {
                    repeat = 1;
                }
                result.append(am_pm == AM ? q->amText().toUpper() : q->pmText().toUpper());
                break;

            case 'z':
                used = true;
                if (repeat >= 3) {
                    repeat = 3;
                } else {
                    repeat = 1;
                }
                switch (repeat) {
                case 1:
                    result.append(longLongToString(time->msec()));
                    break;
                case 3:
                    result.append(longLongToString(time->msec(), -1, 10, 3, QLocalePrivate::ZeroPadded));
                    break;
                }
                break;

            case 't':
                used = true;
                repeat = 1;
                result.append(timeZone());
                break;
            default:
                break;
            }
        }
        if (!used) {
            result.append(QString(repeat, c));
        }
        i += repeat;
    }

    return result;
}

QString QLocalePrivate::doubleToString(double d,
                                       int precision,
                                       DoubleForm form,
                                       int width,
                                       unsigned flags) const
{
    return QLocalePrivate::doubleToString(zero(), plus(), minus(), exponential(),
                                          group(), decimal(),
                                          d, precision, form, width, flags);
}

QString QLocalePrivate::doubleToString(const QChar _zero, const QChar plus, const QChar minus,
                                       const QChar exponential, const QChar group, const QChar decimal,
                                       double d,
                                       int precision,
                                       DoubleForm form,
                                       int width,
                                       unsigned flags)
{
    if (precision == -1)
        precision = 6;
    if (width == -1)
        width = 0;

    bool negative = false;
    bool special_number = false; // nan, +/-inf
    QString num_str;

    // Detect special numbers (nan, +/-inf)
    if (qt_is_inf(d)) {
        num_str = QString::fromLatin1("inf");
        special_number = true;
        negative = d < 0;
    } else if (qt_is_nan(d)) {
        num_str = QString::fromLatin1("nan");
        special_number = true;
    }

    // Handle normal numbers
    if (!special_number) {
        int decpt, sign;
        QString digits;

#ifdef QT_QLOCALE_USES_FCVT
        // NOT thread safe!
        if (form == DFDecimal) {
            digits = QLatin1String(fcvt(d, precision, &decpt, &sign));
        } else {
            int pr = precision;
            if (form == DFExponent)
                ++pr;
            else if (form == DFSignificantDigits && pr == 0)
                pr = 1;
            digits = QLatin1String(ecvt(d, pr, &decpt, &sign));

            // Chop trailing zeros
            if (digits.length() > 0) {
                int last_nonzero_idx = digits.length() - 1;
                while (last_nonzero_idx > 0
                       && digits.unicode()[last_nonzero_idx] == QLatin1Char('0'))
                    --last_nonzero_idx;
                digits.truncate(last_nonzero_idx + 1);
            }

        }

#else
        int mode;
        if (form == DFDecimal)
            mode = 3;
        else
            mode = 2;

        /* This next bit is a bit quirky. In DFExponent form, the precision
           is the number of digits after decpt. So that would suggest using
           mode=3 for qdtoa. But qdtoa behaves strangely when mode=3 and
           precision=0. So we get around this by using mode=2 and reasoning
           that we want precision+1 significant digits, since the decimal
           point in this mode is always after the first digit. */
        int pr = precision;
        if (form == DFExponent)
            ++pr;

        char *rve = 0;
        char *buff = 0;
        QT_TRY {
            digits = QLatin1String(qdtoa(d, mode, pr, &decpt, &sign, &rve, &buff));
        } QT_CATCH(...) {
            if (buff != 0)
                free(buff);
            QT_RETHROW;
        }
        if (buff != 0)
            free(buff);
#endif // QT_QLOCALE_USES_FCVT

        if (_zero.unicode() != '0') {
            ushort z = _zero.unicode() - '0';
            for (int i = 0; i < digits.length(); ++i)
                reinterpret_cast<ushort *>(digits.data())[i] += z;
        }

        bool always_show_decpt = (flags & Alternate || flags & ForcePoint);
        switch (form) {
            case DFExponent: {
                num_str = exponentForm(_zero, decimal, exponential, group, plus, minus,
                                       digits, decpt, precision, PMDecimalDigits,
                                       always_show_decpt);
                break;
            }
            case DFDecimal: {
                num_str = decimalForm(_zero, decimal, group,
                                      digits, decpt, precision, PMDecimalDigits,
                                      always_show_decpt, flags & ThousandsGroup);
                break;
            }
            case DFSignificantDigits: {
                PrecisionMode mode = (flags & Alternate) ?
                            PMSignificantDigits : PMChopTrailingZeros;

                if (decpt != digits.length() && (decpt <= -4 || decpt > precision))
                    num_str = exponentForm(_zero, decimal, exponential, group, plus, minus,
                                           digits, decpt, precision, mode,
                                           always_show_decpt);
                else
                    num_str = decimalForm(_zero, decimal, group,
                                          digits, decpt, precision, mode,
                                          always_show_decpt, flags & ThousandsGroup);
                break;
            }
        }

        negative = sign != 0 && !isZero(d);
    }

    // pad with zeros. LeftAdjusted overrides this flag). Also, we don't
    // pad special numbers
    if (flags & QLocalePrivate::ZeroPadded
            && !(flags & QLocalePrivate::LeftAdjusted)
            && !special_number) {
        int num_pad_chars = width - num_str.length();
        // leave space for the sign
        if (negative
                || flags & QLocalePrivate::AlwaysShowSign
                || flags & QLocalePrivate::BlankBeforePositive)
            --num_pad_chars;

        for (int i = 0; i < num_pad_chars; ++i)
            num_str.prepend(_zero);
    }

    // add sign
    if (negative)
        num_str.prepend(minus);
    else if (flags & QLocalePrivate::AlwaysShowSign)
        num_str.prepend(plus);
    else if (flags & QLocalePrivate::BlankBeforePositive)
        num_str.prepend(QLatin1Char(' '));

    if (flags & QLocalePrivate::CapitalEorX)
        num_str = num_str.toUpper();

    return num_str;
}

QString QLocalePrivate::longLongToString(qlonglong l, int precision,
                                            int base, int width,
                                            unsigned flags) const
{
    return QLocalePrivate::longLongToString(zero(), group(), plus(), minus(),
                                            l, precision, base, width, flags);
}

QString QLocalePrivate::longLongToString(const QChar zero, const QChar group,
                                         const QChar plus, const QChar minus,
                                         qlonglong l, int precision,
                                         int base, int width,
                                         unsigned flags)
{
    bool precision_not_specified = false;
    if (precision == -1) {
        precision_not_specified = true;
        precision = 1;
    }

    bool negative = l < 0;
    if (base != 10) {
        // these are not supported by sprintf for octal and hex
        flags &= ~AlwaysShowSign;
        flags &= ~BlankBeforePositive;
        negative = false; // neither are negative numbers
    }

    QString num_str;
    if (base == 10)
        num_str = qlltoa(l, base, zero);
    else
        num_str = qulltoa(l, base, zero);

    uint cnt_thousand_sep = 0;
    if (flags & ThousandsGroup && base == 10) {
        for (int i = num_str.length() - 3; i > 0; i -= 3) {
            num_str.insert(i, group);
            ++cnt_thousand_sep;
        }
    }

    for (int i = num_str.length()/* - cnt_thousand_sep*/; i < precision; ++i)
        num_str.prepend(base == 10 ? zero : QChar::fromLatin1('0'));

    if ((flags & Alternate || flags & ShowBase)
            && base == 8
            && (num_str.isEmpty() || num_str[0].unicode() != QLatin1Char('0')))
        num_str.prepend(QLatin1Char('0'));

    // LeftAdjusted overrides this flag ZeroPadded. sprintf only padds
    // when precision is not specified in the format string
    bool zero_padded = flags & ZeroPadded
                        && !(flags & LeftAdjusted)
                        && precision_not_specified;

    if (zero_padded) {
        int num_pad_chars = width - num_str.length();

        // leave space for the sign
        if (negative
                || flags & AlwaysShowSign
                || flags & BlankBeforePositive)
            --num_pad_chars;

        // leave space for optional '0x' in hex form
        if (base == 16 && (flags & Alternate || flags & ShowBase))
            num_pad_chars -= 2;
        // leave space for optional '0b' in binary form
        else if (base == 2 && (flags & Alternate || flags & ShowBase))
            num_pad_chars -= 2;

        for (int i = 0; i < num_pad_chars; ++i)
            num_str.prepend(base == 10 ? zero : QChar::fromLatin1('0'));
    }

    if (flags & CapitalEorX)
        num_str = num_str.toUpper();

    if (base == 16 && (flags & Alternate || flags & ShowBase))
        num_str.prepend(QLatin1String(flags & UppercaseBase ? "0X" : "0x"));
    if (base == 2 && (flags & Alternate || flags & ShowBase))
        num_str.prepend(QLatin1String(flags & UppercaseBase ? "0B" : "0b"));

    // add sign
    if (negative)
        num_str.prepend(minus);
    else if (flags & AlwaysShowSign)
        num_str.prepend(plus);
    else if (flags & BlankBeforePositive)
        num_str.prepend(QLatin1Char(' '));

    return num_str;
}

QString QLocalePrivate::unsLongLongToString(qulonglong l, int precision,
                                            int base, int width,
                                            unsigned flags) const
{
    return QLocalePrivate::unsLongLongToString(zero(), group(), plus(),
                                               l, precision, base, width, flags);
}

QString QLocalePrivate::unsLongLongToString(const QChar zero, const QChar group,
                                            const QChar plus,
                                            qulonglong l, int precision,
                                            int base, int width,
                                            unsigned flags)
{
    bool precision_not_specified = false;
    if (precision == -1) {
        precision_not_specified = true;
        precision = 1;
    }

    QString num_str = qulltoa(l, base, zero);

    uint cnt_thousand_sep = 0;
    if (flags & ThousandsGroup && base == 10) {
        for (int i = num_str.length() - 3; i > 0; i -=3) {
            num_str.insert(i, group);
            ++cnt_thousand_sep;
        }
    }

    for (int i = num_str.length()/* - cnt_thousand_sep*/; i < precision; ++i)
        num_str.prepend(base == 10 ? zero : QChar::fromLatin1('0'));

    if ((flags & Alternate || flags & ShowBase)
            && base == 8
            && (num_str.isEmpty() || num_str[0].unicode() != QLatin1Char('0')))
        num_str.prepend(QLatin1Char('0'));

    // LeftAdjusted overrides this flag ZeroPadded. sprintf only padds
    // when precision is not specified in the format string
    bool zero_padded = flags & ZeroPadded
                        && !(flags & LeftAdjusted)
                        && precision_not_specified;

    if (zero_padded) {
        int num_pad_chars = width - num_str.length();

        // leave space for optional '0x' in hex form
        if (base == 16 && flags & Alternate)
            num_pad_chars -= 2;
        // leave space for optional '0b' in binary form
        else if (base == 2 && flags & Alternate)
            num_pad_chars -= 2;

        for (int i = 0; i < num_pad_chars; ++i)
            num_str.prepend(base == 10 ? zero : QChar::fromLatin1('0'));
    }

    if (flags & CapitalEorX)
        num_str = num_str.toUpper();

    if (base == 16 && (flags & Alternate || flags & ShowBase))
        num_str.prepend(QLatin1String(flags & UppercaseBase ? "0X" : "0x"));
    else if (base == 2 && (flags & Alternate || flags & ShowBase))
        num_str.prepend(QLatin1String(flags & UppercaseBase ? "0B" : "0b"));

    // add sign
    if (flags & AlwaysShowSign)
        num_str.prepend(plus);
    else if (flags & BlankBeforePositive)
        num_str.prepend(QLatin1Char(' '));

    return num_str;
}

/*
    Converts a number in locale to its representation in the C locale.
    Only has to guarantee that a string that is a correct representation of
    a number will be converted. If junk is passed in, junk will be passed
    out and the error will be detected during the actual conversion to a
    number. We can't detect junk here, since we don't even know the base
    of the number.
*/
bool QLocalePrivate::numberToCLocale(const QString &num,
                                            GroupSeparatorMode group_sep_mode,
                                            CharBuff *result) const
{
    const QChar *uc = num.unicode();
    int l = num.length();
    int idx = 0;

    // Skip whitespace
    while (idx < l && uc[idx].isSpace())
        ++idx;
    if (idx == l)
        return false;

    while (idx < l) {
        const QChar &in = uc[idx];

        char out = digitToCLocale(in);
        if (out == 0) {
            if (in == list())
                out = ';';
            else if (in == percent())
                out = '%';
            // for handling base-x numbers
            else if (in.unicode() >= 'A' && in.unicode() <= 'Z')
                out = in.toLower().toLatin1();
            else if (in.unicode() >= 'a' && in.unicode() <= 'z')
                out = in.toLatin1();
            else
                break;
        }

        result->append(out);

        ++idx;
    }

    // Check trailing whitespace
    for (; idx < l; ++idx) {
        if (!uc[idx].isSpace())
            return false;
    }

    result->append('\0');

    // Check separators
    if (group_sep_mode == ParseGroupSeparators
            && !removeGroupSeparators(result))
        return false;


    return true;
}

bool QLocalePrivate::validateChars(const QString &str, NumberMode numMode, QByteArray *buff,
                                    int decDigits) const
{
    buff->clear();
    buff->reserve(str.length());

    const bool scientific = numMode == DoubleScientificMode;
    bool lastWasE = false;
    bool lastWasDigit = false;
    int eCnt = 0;
    int decPointCnt = 0;
    bool dec = false;
    int decDigitCnt = 0;

    for (int i = 0; i < str.length(); ++i) {
        char c = digitToCLocale(str.at(i));

        if (c >= '0' && c <= '9') {
            if (numMode != IntegerMode) {
                // If a double has too many digits after decpt, it shall be Invalid.
                if (dec && decDigits != -1 && decDigits < ++decDigitCnt)
                    return false;
            }
            lastWasDigit = true;
        } else {
            switch (c) {
                case '.':
                    if (numMode == IntegerMode) {
                        // If an integer has a decimal point, it shall be Invalid.
                        return false;
                    } else {
                        // If a double has more than one decimal point, it shall be Invalid.
                        if (++decPointCnt > 1)
                            return false;
#if 0
                        // If a double with no decimal digits has a decimal point, it shall be
                        // Invalid.
                        if (decDigits == 0)
                            return false;
#endif                  // On second thoughts, it shall be Valid.

                        dec = true;
                    }
                    break;

                case '+':
                case '-':
                    if (scientific) {
                        // If a scientific has a sign that's not at the beginning or after
                        // an 'e', it shall be Invalid.
                        if (i != 0 && !lastWasE)
                            return false;
                    } else {
                        // If a non-scientific has a sign that's not at the beginning,
                        // it shall be Invalid.
                        if (i != 0)
                            return false;
                    }
                    break;

                case ',':
                    //it can only be placed after a digit which is before the decimal point
                    if (!lastWasDigit || decPointCnt > 0)
                        return false;
                    break;

                case 'e':
                    if (scientific) {
                        // If a scientific has more than one 'e', it shall be Invalid.
                        if (++eCnt > 1)
                            return false;
                        dec = false;
                    } else {
                        // If a non-scientific has an 'e', it shall be Invalid.
                        return false;
                    }
                    break;

                default:
                    // If it's not a valid digit, it shall be Invalid.
                    return false;
            }
            lastWasDigit = false;
        }

        lastWasE = c == 'e';
        if (c != ',')
            buff->append(c);
    }

    return true;
}

double QLocalePrivate::stringToDouble(const QString &number, bool *ok,
                                        GroupSeparatorMode group_sep_mode) const
{
    CharBuff buff;
    if (!numberToCLocale(group().unicode() == 0xa0 ? number.trimmed() : number,
                         group_sep_mode, &buff)) {
        if (ok != 0)
            *ok = false;
        return 0.0;
    }
    return bytearrayToDouble(buff.constData(), ok);
}

qlonglong QLocalePrivate::stringToLongLong(const QString &number, int base,
                                           bool *ok, GroupSeparatorMode group_sep_mode) const
{
    CharBuff buff;
    if (!numberToCLocale(group().unicode() == 0xa0 ? number.trimmed() : number,
                         group_sep_mode, &buff)) {
        if (ok != 0)
            *ok = false;
        return 0;
    }

    return bytearrayToLongLong(buff.constData(), base, ok);
}

qulonglong QLocalePrivate::stringToUnsLongLong(const QString &number, int base,
                                               bool *ok, GroupSeparatorMode group_sep_mode) const
{
    CharBuff buff;
    if (!numberToCLocale(group().unicode() == 0xa0 ? number.trimmed() : number,
                         group_sep_mode, &buff)) {
        if (ok != 0)
            *ok = false;
        return 0;
    }

    return bytearrayToUnsLongLong(buff.constData(), base, ok);
}


double QLocalePrivate::bytearrayToDouble(const char *num, bool *ok, bool *overflow)
{
    if (ok != 0)
        *ok = true;
    if (overflow != 0)
        *overflow = false;

    if (*num == '\0') {
        if (ok != 0)
            *ok = false;
        return 0.0;
    }

    if (qstrcmp(num, "nan") == 0)
        return qt_snan();

    if (qstrcmp(num, "+inf") == 0 || qstrcmp(num, "inf") == 0)
        return qt_inf();

    if (qstrcmp(num, "-inf") == 0)
        return -qt_inf();

    bool _ok;
    const char *endptr;
    double d = qstrtod(num, &endptr, &_ok);

    if (!_ok) {
        // the only way strtod can fail with *endptr != '\0' on a non-empty
        // input string is overflow
        if (ok != 0)
            *ok = false;
        if (overflow != 0)
            *overflow = *endptr != '\0';
        return 0.0;
    }

    if (*endptr != '\0') {
        // we stopped at a non-digit character after converting some digits
        if (ok != 0)
            *ok = false;
        if (overflow != 0)
            *overflow = false;
        return 0.0;
    }

    if (ok != 0)
        *ok = true;
    if (overflow != 0)
        *overflow = false;
    return d;
}

qlonglong QLocalePrivate::bytearrayToLongLong(const char *num, int base, bool *ok, bool *overflow)
{
    bool _ok;
    const char *endptr;

    if (*num == '\0') {
        if (ok != 0)
            *ok = false;
        if (overflow != 0)
            *overflow = false;
        return 0;
    }

    qlonglong l = qstrtoll(num, &endptr, base, &_ok);

    if (!_ok) {
        if (ok != 0)
            *ok = false;
        if (overflow != 0) {
            // the only way qstrtoll can fail with *endptr != '\0' on a non-empty
            // input string is overflow
            *overflow = *endptr != '\0';
        }
        return 0;
    }

    if (*endptr != '\0') {
        // we stopped at a non-digit character after converting some digits
        if (ok != 0)
            *ok = false;
        if (overflow != 0)
            *overflow = false;
        return 0;
    }

    if (ok != 0)
        *ok = true;
    if (overflow != 0)
        *overflow = false;
    return l;
}

qulonglong QLocalePrivate::bytearrayToUnsLongLong(const char *num, int base, bool *ok)
{
    bool _ok;
    const char *endptr;
    qulonglong l = qstrtoull(num, &endptr, base, &_ok);

    if (!_ok || *endptr != '\0') {
        if (ok != 0)
            *ok = false;
        return 0;
    }

    if (ok != 0)
        *ok = true;
    return l;
}

QString QLocale::currencySymbol(QLocale::CurrencySymbolFormat format) const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(QSystemLocale::CurrencySymbol, format);
        if (!res.isNull())
            return res.toString();
    }
#endif
    quint32 idx, size;
    switch (format) {
    case CurrencySymbol:
        idx = d()->m_currency_symbol_idx;
        size = d()->m_currency_symbol_size;
        return getLocaleData(currency_symbol_data + idx, size);
    case CurrencyDisplayName:
        idx = d()->m_currency_display_name_idx;
        size = d()->m_currency_display_name_size;
        return getLocaleListData(currency_display_name_data + idx, size, 0);
    case CurrencyIsoCode: {
        int len = 0;
        const QLocalePrivate *d = this->d();
        for (; len < 3; ++len)
            if (!d->m_currency_iso_code[len])
                break;
        return len ? QString::fromLatin1(d->m_currency_iso_code, len) : QString();
    }
    }
    return QString();
}

QString QLocale::toCurrencyString(qlonglong value, const QString &symbol) const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QSystemLocale::CurrencyToStringArgument arg(value, symbol);
        QVariant res = systemLocale()->query(QSystemLocale::CurrencyToString, QVariant::fromValue(arg));
        if (!res.isNull())
            return res.toString();
    }
#endif
    const QLocalePrivate *d = this->d();
    quint8 idx = d->m_currency_format_idx;
    quint8 size = d->m_currency_format_size;
    if (d->m_currency_negative_format_size && value < 0) {
        idx = d->m_currency_negative_format_idx;
        size = d->m_currency_negative_format_size;
        value = -value;
    }
    QString str = d->longLongToString(value);
    QString sym = symbol.isNull() ? currencySymbol() : symbol;
    if (sym.isEmpty())
        sym = currencySymbol(QLocale::CurrencyIsoCode);
    QString format = getLocaleData(currency_format_data + idx, size);
    return format.arg(str, sym);
}

QString QLocale::toCurrencyString(qulonglong value, const QString &symbol) const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QSystemLocale::CurrencyToStringArgument arg(value, symbol);
        QVariant res = systemLocale()->query(QSystemLocale::CurrencyToString, QVariant::fromValue(arg));
        if (!res.isNull())
            return res.toString();
    }
#endif
    const QLocalePrivate *d = this->d();
    quint8 idx = d->m_currency_format_idx;
    quint8 size = d->m_currency_format_size;
    QString str = d->unsLongLongToString(value);
    QString sym = symbol.isNull() ? currencySymbol() : symbol;
    if (sym.isEmpty())
        sym = currencySymbol(QLocale::CurrencyIsoCode);
    QString format = getLocaleData(currency_format_data + idx, size);
    return format.arg(str, sym);
}

QString QLocale::toCurrencyString(double value, const QString &symbol) const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QSystemLocale::CurrencyToStringArgument arg(value, symbol);
        QVariant res = systemLocale()->query(QSystemLocale::CurrencyToString, QVariant::fromValue(arg));
        if (!res.isNull())
            return res.toString();
    }
#endif
    const QLocalePrivate *d = this->d();
    quint8 idx = d->m_currency_format_idx;
    quint8 size = d->m_currency_format_size;
    if (d->m_currency_negative_format_size && value < 0) {
        idx = d->m_currency_negative_format_idx;
        size = d->m_currency_negative_format_size;
        value = -value;
    }
    QString str = d->doubleToString(value, d->m_currency_digits,
                                    QLocalePrivate::DFDecimal);
    QString sym = symbol.isNull() ? currencySymbol() : symbol;
    if (sym.isEmpty())
        sym = currencySymbol(QLocale::CurrencyIsoCode);
    QString format = getLocaleData(currency_format_data + idx, size);
    return format.arg(str, sym);
}

QStringList QLocale::uiLanguages() const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(QSystemLocale::UILanguages, QVariant());
        if (!res.isNull()) {
            QStringList result = res.toStringList();
            if (!result.isEmpty())
                return result;
        }
    }
#endif
    return QStringList(bcp47Name());
}

QString QLocale::nativeLanguageName() const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(QSystemLocale::NativeLanguageName, QVariant());
        if (!res.isNull())
            return res.toString();
    }
#endif
    return getLocaleData(endonyms_data + d()->m_language_endonym_idx, d()->m_language_endonym_size);
}

QString QLocale::nativeCountryName() const
{
#ifndef QT_NO_SYSTEMLOCALE
    if (d() == systemPrivate()) {
        QVariant res = systemLocale()->query(QSystemLocale::NativeCountryName, QVariant());
        if (!res.isNull())
            return res.toString();
    }
#endif
    return getLocaleData(endonyms_data + d()->m_country_endonym_idx, d()->m_country_endonym_size);
}

QT_END_NAMESPACE