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Diffstat (limited to 'src/corelib/text/qlocale_p.h')
| -rw-r--r-- | src/corelib/text/qlocale_p.h | 471 |
1 files changed, 471 insertions, 0 deletions
diff --git a/src/corelib/text/qlocale_p.h b/src/corelib/text/qlocale_p.h new file mode 100644 index 0000000000..37afb8542b --- /dev/null +++ b/src/corelib/text/qlocale_p.h @@ -0,0 +1,471 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Copyright (C) 2016 Intel Corporation. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QLOCALE_P_H +#define QLOCALE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of internal files. This header file may change from version to version +// without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/private/qglobal_p.h> +#include "QtCore/qstring.h" +#include "QtCore/qvarlengtharray.h" +#include "QtCore/qvariant.h" +#include "QtCore/qnumeric.h" + +#include "qlocale.h" + +#include <limits> +#include <cmath> + +QT_BEGIN_NAMESPACE + +#ifndef QT_NO_SYSTEMLOCALE +struct QLocaleData; +class Q_CORE_EXPORT QSystemLocale +{ +public: + QSystemLocale(); + virtual ~QSystemLocale(); + + struct CurrencyToStringArgument + { + CurrencyToStringArgument() { } + CurrencyToStringArgument(const QVariant &v, const QString &s) + : value(v), symbol(s) { } + QVariant value; + QString symbol; + }; + + enum QueryType { + LanguageId, // uint + CountryId, // uint + DecimalPoint, // QString + GroupSeparator, // QString + ZeroDigit, // QString + NegativeSign, // QString + DateFormatLong, // QString + DateFormatShort, // QString + TimeFormatLong, // QString + TimeFormatShort, // QString + DayNameLong, // QString, in: int + DayNameShort, // QString, in: int + MonthNameLong, // QString, in: int + MonthNameShort, // QString, in: int + DateToStringLong, // QString, in: QDate + DateToStringShort, // QString in: QDate + TimeToStringLong, // QString in: QTime + TimeToStringShort, // QString in: QTime + DateTimeFormatLong, // QString + DateTimeFormatShort, // QString + DateTimeToStringLong, // QString in: QDateTime + DateTimeToStringShort, // QString in: QDateTime + MeasurementSystem, // uint + PositiveSign, // QString + AMText, // QString + PMText, // QString + FirstDayOfWeek, // Qt::DayOfWeek + Weekdays, // QList<Qt::DayOfWeek> + CurrencySymbol, // QString in: CurrencyToStringArgument + CurrencyToString, // QString in: qlonglong, qulonglong or double + Collation, // QString + UILanguages, // QStringList + StringToStandardQuotation, // QString in: QStringRef to quote + StringToAlternateQuotation, // QString in: QStringRef to quote + ScriptId, // uint + ListToSeparatedString, // QString + LocaleChanged, // system locale changed + NativeLanguageName, // QString + NativeCountryName, // QString + StandaloneMonthNameLong, // QString, in: int + StandaloneMonthNameShort // QString, in: int + }; + virtual QVariant query(QueryType type, QVariant in) const; + virtual QLocale fallbackUiLocale() const; + + inline const QLocaleData *fallbackUiLocaleData() const; +private: + QSystemLocale(bool); + friend class QSystemLocaleSingleton; +}; +Q_DECLARE_TYPEINFO(QSystemLocale::QueryType, Q_PRIMITIVE_TYPE); +Q_DECLARE_TYPEINFO(QSystemLocale::CurrencyToStringArgument, Q_MOVABLE_TYPE); +#endif + +#if QT_CONFIG(icu) +namespace QIcu { + QString toUpper(const QByteArray &localeId, const QString &str, bool *ok); + QString toLower(const QByteArray &localeId, const QString &str, bool *ok); +} +#endif + + +struct QLocaleId +{ + // bypass constructors + static inline QLocaleId fromIds(ushort language, ushort script, ushort country) + { + const QLocaleId localeId = { language, script, country }; + return localeId; + } + + inline bool operator==(QLocaleId other) const + { return language_id == other.language_id && script_id == other.script_id && country_id == other.country_id; } + inline bool operator!=(QLocaleId other) const + { return !operator==(other); } + + QLocaleId withLikelySubtagsAdded() const; + QLocaleId withLikelySubtagsRemoved() const; + + QByteArray name(char separator = '-') const; + + ushort language_id, script_id, country_id; +}; +Q_DECLARE_TYPEINFO(QLocaleId, Q_PRIMITIVE_TYPE); + +struct QLocaleData +{ +public: + static const QLocaleData *findLocaleData(QLocale::Language language, + QLocale::Script script, + QLocale::Country country); + static const QLocaleData *c(); + + // Maximum number of significant digits needed to represent a double. + // We cannot use std::numeric_limits here without constexpr. + static const int DoubleMantissaBits = 53; + static const int Log10_2_100000 = 30103; // log10(2) * 100000 + // same as C++11 std::numeric_limits<T>::max_digits10 + static const int DoubleMaxSignificant = (DoubleMantissaBits * Log10_2_100000) / 100000 + 2; + + // Maximum number of digits before decimal point to represent a double + // Same as std::numeric_limits<double>::max_exponent10 + 1 + static const int DoubleMaxDigitsBeforeDecimal = 309; + + enum DoubleForm { + DFExponent = 0, + DFDecimal, + DFSignificantDigits, + _DFMax = DFSignificantDigits + }; + + enum Flags { + NoFlags = 0, + AddTrailingZeroes = 0x01, + ZeroPadded = 0x02, + LeftAdjusted = 0x04, + BlankBeforePositive = 0x08, + AlwaysShowSign = 0x10, + ThousandsGroup = 0x20, + CapitalEorX = 0x40, + + ShowBase = 0x80, + UppercaseBase = 0x100, + ZeroPadExponent = 0x200, + ForcePoint = 0x400 + }; + + enum NumberMode { IntegerMode, DoubleStandardMode, DoubleScientificMode }; + + typedef QVarLengthArray<char, 256> CharBuff; + + static QString doubleToString(const QChar zero, const QChar plus, + const QChar minus, const QChar exponent, + const QChar group, const QChar decimal, + double d, int precision, + DoubleForm form, + int width, unsigned flags); + static QString longLongToString(const QChar zero, const QChar group, + const QChar plus, const QChar minus, + qint64 l, int precision, int base, + int width, unsigned flags); + static QString unsLongLongToString(const QChar zero, const QChar group, + const QChar plus, + quint64 l, int precision, + int base, int width, + unsigned flags); + + QString doubleToString(double d, + int precision = -1, + DoubleForm form = DFSignificantDigits, + int width = -1, + unsigned flags = NoFlags) const; + QString longLongToString(qint64 l, int precision = -1, + int base = 10, + int width = -1, + unsigned flags = NoFlags) const; + QString unsLongLongToString(quint64 l, int precision = -1, + int base = 10, + int width = -1, + unsigned flags = NoFlags) const; + + // this function is meant to be called with the result of stringToDouble or bytearrayToDouble + static float convertDoubleToFloat(double d, bool *ok) + { + if (qIsInf(d)) + return float(d); + if (std::fabs(d) > std::numeric_limits<float>::max()) { + if (ok) + *ok = false; + const float huge = std::numeric_limits<float>::infinity(); + return d < 0 ? -huge : huge; + } + if (d != 0 && float(d) == 0) { + // Values that underflow double already failed. Match them: + if (ok) + *ok = false; + return 0; + } + return float(d); + } + + double stringToDouble(QStringView str, bool *ok, QLocale::NumberOptions options) const; + qint64 stringToLongLong(QStringView str, int base, bool *ok, QLocale::NumberOptions options) const; + quint64 stringToUnsLongLong(QStringView str, int base, bool *ok, QLocale::NumberOptions options) const; + + static double bytearrayToDouble(const char *num, bool *ok); + // this function is used in QIntValidator (QtGui) + Q_CORE_EXPORT static qint64 bytearrayToLongLong(const char *num, int base, bool *ok); + static quint64 bytearrayToUnsLongLong(const char *num, int base, bool *ok); + + bool numberToCLocale(QStringView s, QLocale::NumberOptions number_options, + CharBuff *result) const; + inline char digitToCLocale(QChar c) const; + + // this function is used in QIntValidator (QtGui) + Q_CORE_EXPORT bool validateChars(QStringView str, NumberMode numMode, QByteArray *buff, int decDigits = -1, + QLocale::NumberOptions number_options = QLocale::DefaultNumberOptions) const; + +public: + quint16 m_language_id, m_script_id, m_country_id; + + // FIXME QTBUG-69324: not all unicode code-points map to single-token UTF-16 :-( + char16_t m_decimal, m_group, m_list, m_percent, m_zero, m_minus, m_plus, m_exponential; + char16_t m_quotation_start, m_quotation_end; + char16_t m_alternate_quotation_start, m_alternate_quotation_end; + + quint16 m_list_pattern_part_start_idx, m_list_pattern_part_start_size; + quint16 m_list_pattern_part_mid_idx, m_list_pattern_part_mid_size; + quint16 m_list_pattern_part_end_idx, m_list_pattern_part_end_size; + quint16 m_list_pattern_part_two_idx, m_list_pattern_part_two_size; + quint16 m_short_date_format_idx, m_short_date_format_size; + quint16 m_long_date_format_idx, m_long_date_format_size; + quint16 m_short_time_format_idx, m_short_time_format_size; + quint16 m_long_time_format_idx, m_long_time_format_size; + quint16 m_standalone_short_month_names_idx, m_standalone_short_month_names_size; + quint16 m_standalone_long_month_names_idx, m_standalone_long_month_names_size; + quint16 m_standalone_narrow_month_names_idx, m_standalone_narrow_month_names_size; + quint16 m_short_month_names_idx, m_short_month_names_size; + quint16 m_long_month_names_idx, m_long_month_names_size; + quint16 m_narrow_month_names_idx, m_narrow_month_names_size; + quint16 m_standalone_short_day_names_idx, m_standalone_short_day_names_size; + quint16 m_standalone_long_day_names_idx, m_standalone_long_day_names_size; + quint16 m_standalone_narrow_day_names_idx, m_standalone_narrow_day_names_size; + quint16 m_short_day_names_idx, m_short_day_names_size; + quint16 m_long_day_names_idx, m_long_day_names_size; + quint16 m_narrow_day_names_idx, m_narrow_day_names_size; + quint16 m_am_idx, m_am_size; + quint16 m_pm_idx, m_pm_size; + quint16 m_byte_idx, m_byte_size; + quint16 m_byte_si_quantified_idx, m_byte_si_quantified_size; + quint16 m_byte_iec_quantified_idx, m_byte_iec_quantified_size; + char m_currency_iso_code[3]; + quint16 m_currency_symbol_idx, m_currency_symbol_size; + quint16 m_currency_display_name_idx, m_currency_display_name_size; + quint8 m_currency_format_idx, m_currency_format_size; + quint8 m_currency_negative_format_idx, m_currency_negative_format_size; + quint16 m_language_endonym_idx, m_language_endonym_size; + quint16 m_country_endonym_idx, m_country_endonym_size; + quint16 m_currency_digits : 2; + quint16 m_currency_rounding : 3; + quint16 m_first_day_of_week : 3; + quint16 m_weekend_start : 3; + quint16 m_weekend_end : 3; +}; + +class Q_CORE_EXPORT QLocalePrivate +{ +public: + static QLocalePrivate *create( + const QLocaleData *data, + QLocale::NumberOptions numberOptions = QLocale::DefaultNumberOptions) + { + QLocalePrivate *retval = new QLocalePrivate; + retval->m_data = data; + retval->ref.storeRelaxed(0); + retval->m_numberOptions = numberOptions; + return retval; + } + + static QLocalePrivate *get(QLocale &l) { return l.d; } + static const QLocalePrivate *get(const QLocale &l) { return l.d; } + + QChar decimal() const { return QChar(m_data->m_decimal); } + QChar group() const { return QChar(m_data->m_group); } + QChar list() const { return QChar(m_data->m_list); } + QChar percent() const { return QChar(m_data->m_percent); } + QChar zero() const { return QChar(m_data->m_zero); } + QChar plus() const { return QChar(m_data->m_plus); } + QChar minus() const { return QChar(m_data->m_minus); } + QChar exponential() const { return QChar(m_data->m_exponential); } + + quint16 languageId() const { return m_data->m_language_id; } + quint16 countryId() const { return m_data->m_country_id; } + + QByteArray bcp47Name(char separator = '-') const; + + inline QLatin1String languageCode() const { return languageToCode(QLocale::Language(m_data->m_language_id)); } + inline QLatin1String scriptCode() const { return scriptToCode(QLocale::Script(m_data->m_script_id)); } + inline QLatin1String countryCode() const { return countryToCode(QLocale::Country(m_data->m_country_id)); } + + static QLatin1String languageToCode(QLocale::Language language); + static QLatin1String scriptToCode(QLocale::Script script); + static QLatin1String countryToCode(QLocale::Country country); + static QLocale::Language codeToLanguage(QStringView code) noexcept; + static QLocale::Script codeToScript(QStringView code) noexcept; + static QLocale::Country codeToCountry(QStringView code) noexcept; + static void getLangAndCountry(const QString &name, QLocale::Language &lang, + QLocale::Script &script, QLocale::Country &cntry); + + QLocale::MeasurementSystem measurementSystem() const; + + QString dateTimeToString(QStringView format, const QDateTime &datetime, + const QDate &dateOnly, const QTime &timeOnly, + const QLocale *q) const; + + const QLocaleData *m_data; + QBasicAtomicInt ref; + QLocale::NumberOptions m_numberOptions; +}; + +#ifndef QT_NO_SYSTEMLOCALE +const QLocaleData *QSystemLocale::fallbackUiLocaleData() const { return fallbackUiLocale().d->m_data; } +#endif + +template <> +inline QLocalePrivate *QSharedDataPointer<QLocalePrivate>::clone() +{ + // cannot use QLocalePrivate's copy constructor + // since it is deleted in C++11 + return QLocalePrivate::create(d->m_data, d->m_numberOptions); +} + +inline char QLocaleData::digitToCLocale(QChar in) const +{ + const ushort tenUnicode = m_zero + 10; + + if (in.unicode() >= m_zero && in.unicode() < tenUnicode) + return '0' + in.unicode() - m_zero; + + if (in.unicode() >= '0' && in.unicode() <= '9') + return in.toLatin1(); + + if (in == m_plus || in == QLatin1Char('+')) + return '+'; + + if (in == m_minus || in == QLatin1Char('-') || in == QChar(0x2212)) + return '-'; + + if (in == m_decimal) + return '.'; + + if (in == m_group) + return ','; + + if (in == m_exponential || in == QChar(QChar::toUpper(m_exponential))) + return 'e'; + + // In several languages group() is a non-breaking space (U+00A0) or its thin + // version (U+202f), which look like spaces. People (and thus some of our + // tests) use a regular space instead and complain if it doesn't work. + if ((m_group == 0xA0 || m_group == 0x202f) && in.unicode() == ' ') + return ','; + + return 0; +} + +QString qt_readEscapedFormatString(QStringView format, int *idx); +bool qt_splitLocaleName(const QString &name, QString &lang, QString &script, QString &cntry); +int qt_repeatCount(QStringView s); + +enum { AsciiSpaceMask = (1u << (' ' - 1)) | + (1u << ('\t' - 1)) | // 9: HT - horizontal tab + (1u << ('\n' - 1)) | // 10: LF - line feed + (1u << ('\v' - 1)) | // 11: VT - vertical tab + (1u << ('\f' - 1)) | // 12: FF - form feed + (1u << ('\r' - 1)) }; // 13: CR - carriage return +Q_DECL_CONSTEXPR inline bool ascii_isspace(uchar c) +{ + return c >= 1u && c <= 32u && (AsciiSpaceMask >> uint(c - 1)) & 1u; +} + +#if defined(Q_COMPILER_CONSTEXPR) +Q_STATIC_ASSERT(ascii_isspace(' ')); +Q_STATIC_ASSERT(ascii_isspace('\t')); +Q_STATIC_ASSERT(ascii_isspace('\n')); +Q_STATIC_ASSERT(ascii_isspace('\v')); +Q_STATIC_ASSERT(ascii_isspace('\f')); +Q_STATIC_ASSERT(ascii_isspace('\r')); +Q_STATIC_ASSERT(!ascii_isspace('\0')); +Q_STATIC_ASSERT(!ascii_isspace('\a')); +Q_STATIC_ASSERT(!ascii_isspace('a')); +Q_STATIC_ASSERT(!ascii_isspace('\177')); +Q_STATIC_ASSERT(!ascii_isspace(uchar('\200'))); +Q_STATIC_ASSERT(!ascii_isspace(uchar('\xA0'))); +Q_STATIC_ASSERT(!ascii_isspace(uchar('\377'))); +#endif + +QT_END_NAMESPACE + +Q_DECLARE_METATYPE(QStringRef) +Q_DECLARE_METATYPE(QList<Qt::DayOfWeek>) +#ifndef QT_NO_SYSTEMLOCALE +Q_DECLARE_METATYPE(QSystemLocale::CurrencyToStringArgument) +#endif + +#endif // QLOCALE_P_H |