/* * Copyright (C) 1997-2012, International Business Machines Corporation and * others. All Rights Reserved. ******************************************************************************* * * File SMPDTFMT.H * * Modification History: * * Date Name Description * 02/19/97 aliu Converted from java. * 07/09/97 helena Make ParsePosition into a class. * 07/21/98 stephen Added GMT_PLUS, GMT_MINUS * Changed setTwoDigitStartDate to set2DigitYearStart * Changed getTwoDigitStartDate to get2DigitYearStart * Removed subParseLong * Removed getZoneIndex (added in DateFormatSymbols) * 06/14/99 stephen Removed fgTimeZoneDataSuffix * 10/14/99 aliu Updated class doc to describe 2-digit year parsing * {j28 4182066}. ******************************************************************************* */ #ifndef SMPDTFMT_H #define SMPDTFMT_H #include "unicode/utypes.h" /** * \file * \brief C++ API: Format and parse dates in a language-independent manner. */ #if !UCONFIG_NO_FORMATTING #include "unicode/datefmt.h" U_NAMESPACE_BEGIN class DateFormatSymbols; class DateFormat; class MessageFormat; class FieldPositionHandler; class TimeZoneFormat; /** * * SimpleDateFormat is a concrete class for formatting and parsing dates in a * language-independent manner. It allows for formatting (millis -> text), * parsing (text -> millis), and normalization. Formats/Parses a date or time, * which is the standard milliseconds since 24:00 GMT, Jan 1, 1970. * <P> * Clients are encouraged to create a date-time formatter using DateFormat::getInstance(), * getDateInstance(), getDateInstance(), or getDateTimeInstance() rather than * explicitly constructing an instance of SimpleDateFormat. This way, the client * is guaranteed to get an appropriate formatting pattern for whatever locale the * program is running in. However, if the client needs something more unusual than * the default patterns in the locales, he can construct a SimpleDateFormat directly * and give it an appropriate pattern (or use one of the factory methods on DateFormat * and modify the pattern after the fact with toPattern() and applyPattern(). * <P> * Date/Time format syntax: * <P> * The date/time format is specified by means of a string time pattern. In this * pattern, all ASCII letters are reserved as pattern letters, which are defined * as the following: * <pre> * \code * Symbol Meaning Presentation Example * ------ ------- ------------ ------- * G era designator (Text) AD * y year (Number) 1996 * Y year (week of year) (Number) 1997 * u extended year (Number) 4601 * U cyclic year name (Text,NumFallback) ren-chen (29) * Q Quarter (Text & Number) Q2 & 02 * M month in year (Text & Number) July & 07 * d day in month (Number) 10 * h hour in am/pm (1~12) (Number) 12 * H hour in day (0~23) (Number) 0 * m minute in hour (Number) 30 * s second in minute (Number) 55 * S fractional second (Number) 978 * E day of week (Text) Tuesday * e day of week (local 1~7) (Text & Number) Tues & 2 * D day in year (Number) 189 * F day of week in month (Number) 2 (2nd Wed in July) * w week in year (Number) 27 * W week in month (Number) 2 * a am/pm marker (Text) PM * k hour in day (1~24) (Number) 24 * K hour in am/pm (0~11) (Number) 0 * z time zone (Text) PST * zzzz time zone (Text) Pacific Standard Time * Z time zone (RFC 822) (Number) -0800 * ZZZZ time zone (RFC 822) (Text & Number) GMT-08:00 * ZZZZZ time zone (ISO 8601) (Text & Number) -08:00 & Z * v time zone (generic) (Text) PT * vvvv time zone (generic) (Text) Pacific Time * V time zone (abreviation) (Text) PST * VVVV time zone (location) (Text) United States Time (Los Angeles) * g Julian day (Number) 2451334 * A milliseconds in day (Number) 69540000 * q stand alone quarter (Text & Number) Q2 & 02 * L stand alone month (Text & Number) July & 07 * c stand alone day of week (Text & Number) Tuesday & 2 * ' escape for text (Delimiter) 'Date=' * '' single quote (Literal) 'o''clock' * \endcode * </pre> * The count of pattern letters determine the format. * <P> * (Text): 4 or more, use full form, <4, use short or abbreviated form if it * exists. (e.g., "EEEE" produces "Monday", "EEE" produces "Mon") * <P> * (Number): the minimum number of digits. Shorter numbers are zero-padded to * this amount (e.g. if "m" produces "6", "mm" produces "06"). Year is handled * specially; that is, if the count of 'y' is 2, the Year will be truncated to 2 digits. * (e.g., if "yyyy" produces "1997", "yy" produces "97".) * Unlike other fields, fractional seconds are padded on the right with zero. * <P> * (Text & Number): 3 or over, use text, otherwise use number. (e.g., "M" produces "1", * "MM" produces "01", "MMM" produces "Jan", and "MMMM" produces "January".) * <P> * (Text,NumFallback): Behaves like Text if there is supporting data, like * Number otherwise. * <P> * Any characters in the pattern that are not in the ranges of ['a'..'z'] and * ['A'..'Z'] will be treated as quoted text. For instance, characters * like ':', '.', ' ', '#' and '@' will appear in the resulting time text * even they are not embraced within single quotes. * <P> * A pattern containing any invalid pattern letter will result in a failing * UErrorCode result during formatting or parsing. * <P> * Examples using the US locale: * <pre> * \code * Format Pattern Result * -------------- ------- * "yyyy.MM.dd G 'at' HH:mm:ss vvvv" ->> 1996.07.10 AD at 15:08:56 Pacific Time * "EEE, MMM d, ''yy" ->> Wed, July 10, '96 * "h:mm a" ->> 12:08 PM * "hh 'o''clock' a, zzzz" ->> 12 o'clock PM, Pacific Daylight Time * "K:mm a, vvv" ->> 0:00 PM, PT * "yyyyy.MMMMM.dd GGG hh:mm aaa" ->> 1996.July.10 AD 12:08 PM * \endcode * </pre> * Code Sample: * <pre> * \code * UErrorCode success = U_ZERO_ERROR; * SimpleTimeZone* pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, "PST"); * pdt->setStartRule( Calendar::APRIL, 1, Calendar::SUNDAY, 2*60*60*1000); * pdt->setEndRule( Calendar::OCTOBER, -1, Calendar::SUNDAY, 2*60*60*1000); * * // Format the current time. * SimpleDateFormat* formatter * = new SimpleDateFormat ("yyyy.MM.dd G 'at' hh:mm:ss a zzz", success ); * GregorianCalendar cal(success); * UDate currentTime_1 = cal.getTime(success); * FieldPosition fp(0); * UnicodeString dateString; * formatter->format( currentTime_1, dateString, fp ); * cout << "result: " << dateString << endl; * * // Parse the previous string back into a Date. * ParsePosition pp(0); * UDate currentTime_2 = formatter->parse(dateString, pp ); * \endcode * </pre> * In the above example, the time value "currentTime_2" obtained from parsing * will be equal to currentTime_1. However, they may not be equal if the am/pm * marker 'a' is left out from the format pattern while the "hour in am/pm" * pattern symbol is used. This information loss can happen when formatting the * time in PM. * * <p> * When parsing a date string using the abbreviated year pattern ("y" or "yy"), * SimpleDateFormat must interpret the abbreviated year * relative to some century. It does this by adjusting dates to be * within 80 years before and 20 years after the time the SimpleDateFormat * instance is created. For example, using a pattern of "MM/dd/yy" and a * SimpleDateFormat instance created on Jan 1, 1997, the string * "01/11/12" would be interpreted as Jan 11, 2012 while the string "05/04/64" * would be interpreted as May 4, 1964. * During parsing, only strings consisting of exactly two digits, as defined by * <code>Unicode::isDigit()</code>, will be parsed into the default century. * Any other numeric string, such as a one digit string, a three or more digit * string, or a two digit string that isn't all digits (for example, "-1"), is * interpreted literally. So "01/02/3" or "01/02/003" are parsed (for the * Gregorian calendar), using the same pattern, as Jan 2, 3 AD. Likewise (but * only in lenient parse mode, the default) "01/02/-3" is parsed as Jan 2, 4 BC. * * <p> * If the year pattern has more than two 'y' characters, the year is * interpreted literally, regardless of the number of digits. So using the * pattern "MM/dd/yyyy", "01/11/12" parses to Jan 11, 12 A.D. * * <p> * When numeric fields abut one another directly, with no intervening delimiter * characters, they constitute a run of abutting numeric fields. Such runs are * parsed specially. For example, the format "HHmmss" parses the input text * "123456" to 12:34:56, parses the input text "12345" to 1:23:45, and fails to * parse "1234". In other words, the leftmost field of the run is flexible, * while the others keep a fixed width. If the parse fails anywhere in the run, * then the leftmost field is shortened by one character, and the entire run is * parsed again. This is repeated until either the parse succeeds or the * leftmost field is one character in length. If the parse still fails at that * point, the parse of the run fails. * * <P> * For time zones that have no names, SimpleDateFormat uses strings GMT+hours:minutes or * GMT-hours:minutes. * <P> * The calendar defines what is the first day of the week, the first week of the * year, whether hours are zero based or not (0 vs 12 or 24), and the timezone. * There is one common number format to handle all the numbers; the digit count * is handled programmatically according to the pattern. * * <p><em>User subclasses are not supported.</em> While clients may write * subclasses, such code will not necessarily work and will not be * guaranteed to work stably from release to release. */ class U_I18N_API SimpleDateFormat: public DateFormat { public: /** * Construct a SimpleDateFormat using the default pattern for the default * locale. * <P> * [Note:] Not all locales support SimpleDateFormat; for full generality, * use the factory methods in the DateFormat class. * @param status Output param set to success/failure code. * @stable ICU 2.0 */ SimpleDateFormat(UErrorCode& status); /** * Construct a SimpleDateFormat using the given pattern and the default locale. * The locale is used to obtain the symbols used in formatting (e.g., the * names of the months), but not to provide the pattern. * <P> * [Note:] Not all locales support SimpleDateFormat; for full generality, * use the factory methods in the DateFormat class. * @param pattern the pattern for the format. * @param status Output param set to success/failure code. * @stable ICU 2.0 */ SimpleDateFormat(const UnicodeString& pattern, UErrorCode& status); /** * Construct a SimpleDateFormat using the given pattern, numbering system override, and the default locale. * The locale is used to obtain the symbols used in formatting (e.g., the * names of the months), but not to provide the pattern. * <P> * A numbering system override is a string containing either the name of a known numbering system, * or a set of field and numbering system pairs that specify which fields are to be formattied with * the alternate numbering system. For example, to specify that all numeric fields in the specified * date or time pattern are to be rendered using Thai digits, simply specify the numbering system override * as "thai". To specify that just the year portion of the date be formatted using Hebrew numbering, * use the override string "y=hebrew". Numbering system overrides can be combined using a semi-colon * character in the override string, such as "d=decimal;M=arabic;y=hebrew", etc. * * <P> * [Note:] Not all locales support SimpleDateFormat; for full generality, * use the factory methods in the DateFormat class. * @param pattern the pattern for the format. * @param override the override string. * @param status Output param set to success/failure code. * @stable ICU 4.2 */ SimpleDateFormat(const UnicodeString& pattern, const UnicodeString& override, UErrorCode& status); /** * Construct a SimpleDateFormat using the given pattern and locale. * The locale is used to obtain the symbols used in formatting (e.g., the * names of the months), but not to provide the pattern. * <P> * [Note:] Not all locales support SimpleDateFormat; for full generality, * use the factory methods in the DateFormat class. * @param pattern the pattern for the format. * @param locale the given locale. * @param status Output param set to success/failure code. * @stable ICU 2.0 */ SimpleDateFormat(const UnicodeString& pattern, const Locale& locale, UErrorCode& status); /** * Construct a SimpleDateFormat using the given pattern, numbering system override, and locale. * The locale is used to obtain the symbols used in formatting (e.g., the * names of the months), but not to provide the pattern. * <P> * A numbering system override is a string containing either the name of a known numbering system, * or a set of field and numbering system pairs that specify which fields are to be formattied with * the alternate numbering system. For example, to specify that all numeric fields in the specified * date or time pattern are to be rendered using Thai digits, simply specify the numbering system override * as "thai". To specify that just the year portion of the date be formatted using Hebrew numbering, * use the override string "y=hebrew". Numbering system overrides can be combined using a semi-colon * character in the override string, such as "d=decimal;M=arabic;y=hebrew", etc. * <P> * [Note:] Not all locales support SimpleDateFormat; for full generality, * use the factory methods in the DateFormat class. * @param pattern the pattern for the format. * @param override the numbering system override. * @param locale the given locale. * @param status Output param set to success/failure code. * @stable ICU 4.2 */ SimpleDateFormat(const UnicodeString& pattern, const UnicodeString& override, const Locale& locale, UErrorCode& status); /** * Construct a SimpleDateFormat using the given pattern and locale-specific * symbol data. The formatter takes ownership of the DateFormatSymbols object; * the caller is no longer responsible for deleting it. * @param pattern the given pattern for the format. * @param formatDataToAdopt the symbols to be adopted. * @param status Output param set to success/faulure code. * @stable ICU 2.0 */ SimpleDateFormat(const UnicodeString& pattern, DateFormatSymbols* formatDataToAdopt, UErrorCode& status); /** * Construct a SimpleDateFormat using the given pattern and locale-specific * symbol data. The DateFormatSymbols object is NOT adopted; the caller * remains responsible for deleting it. * @param pattern the given pattern for the format. * @param formatData the formatting symbols to be use. * @param status Output param set to success/faulure code. * @stable ICU 2.0 */ SimpleDateFormat(const UnicodeString& pattern, const DateFormatSymbols& formatData, UErrorCode& status); /** * Copy constructor. * @stable ICU 2.0 */ SimpleDateFormat(const SimpleDateFormat&); /** * Assignment operator. * @stable ICU 2.0 */ SimpleDateFormat& operator=(const SimpleDateFormat&); /** * Destructor. * @stable ICU 2.0 */ virtual ~SimpleDateFormat(); /** * Clone this Format object polymorphically. The caller owns the result and * should delete it when done. * @return A copy of the object. * @stable ICU 2.0 */ virtual Format* clone(void) const; /** * Return true if the given Format objects are semantically equal. Objects * of different subclasses are considered unequal. * @param other the object to be compared with. * @return true if the given Format objects are semantically equal. * @stable ICU 2.0 */ virtual UBool operator==(const Format& other) const; using DateFormat::format; /** * Format a date or time, which is the standard millis since 24:00 GMT, Jan * 1, 1970. Overrides DateFormat pure virtual method. * <P> * Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->> * 1996.07.10 AD at 15:08:56 PDT * * @param cal Calendar set to the date and time to be formatted * into a date/time string. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos The formatting position. On input: an alignment field, * if desired. On output: the offsets of the alignment field. * @return Reference to 'appendTo' parameter. * @stable ICU 2.1 */ virtual UnicodeString& format( Calendar& cal, UnicodeString& appendTo, FieldPosition& pos) const; /* Cannot use #ifndef U_HIDE_DRAFT_API for the following draft method since it is virtual */ /** * Format a date or time, which is the standard millis since 24:00 GMT, Jan * 1, 1970. Overrides DateFormat pure virtual method. * <P> * Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->> * 1996.07.10 AD at 15:08:56 PDT * * @param cal Calendar set to the date and time to be formatted * into a date/time string. * @param types Array of UDateFormatContextTypes for which the corresponding * value specified in the next parameter should override the * formatter's default value for this call (this does not * change the default value). * @param values Array of UDateFormatContextValues corresponding 1-1 to the * UDateFormatContextTypes in the previous parameter. * @param typesAndValuesCount Number of elements in the types and values * arrays. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos The formatting position. On input: an alignment field, * if desired. On output: the offsets of the alignment field. * @return Reference to 'appendTo' parameter. * @draft ICU 49 */ virtual UnicodeString& format( Calendar& cal, const UDateFormatContextType* types, const UDateFormatContextValue* values, int32_t typesAndValuesCount, UnicodeString& appendTo, FieldPosition& pos) const; /** * Format a date or time, which is the standard millis since 24:00 GMT, Jan * 1, 1970. Overrides DateFormat pure virtual method. * <P> * Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->> * 1996.07.10 AD at 15:08:56 PDT * * @param cal Calendar set to the date and time to be formatted * into a date/time string. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param posIter On return, can be used to iterate over positions * of fields generated by this format call. Field values * are defined in UDateFormatField. * @param status Input/output param set to success/failure code. * @return Reference to 'appendTo' parameter. * @stable ICU 4.4 */ virtual UnicodeString& format( Calendar& cal, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const; /** * Format a date or time, which is the standard millis since 24:00 GMT, Jan * 1, 1970. Overrides DateFormat pure virtual method. * <P> * Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->> * 1996.07.10 AD at 15:08:56 PDT * * @param obj A Formattable containing the date-time value to be formatted * into a date-time string. If the type of the Formattable * is a numeric type, it is treated as if it were an * instance of Date. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos The formatting position. On input: an alignment field, * if desired. On output: the offsets of the alignment field. * @param status Input/output param set to success/failure code. * @return Reference to 'appendTo' parameter. * @stable ICU 2.0 */ virtual UnicodeString& format( const Formattable& obj, UnicodeString& appendTo, FieldPosition& pos, UErrorCode& status) const; /** * Format a date or time, which is the standard millis since 24:00 GMT, Jan * 1, 1970. Overrides DateFormat pure virtual method. * <P> * Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->> * 1996.07.10 AD at 15:08:56 PDT * * @param obj A Formattable containing the date-time value to be formatted * into a date-time string. If the type of the Formattable * is a numeric type, it is treated as if it were an * instance of Date. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param posIter On return, can be used to iterate over positions * of fields generated by this format call. Field values * are defined in UDateFormatField. * @param status Input/output param set to success/failure code. * @return Reference to 'appendTo' parameter. * @stable ICU 4.4 */ virtual UnicodeString& format( const Formattable& obj, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const; /** * Redeclared DateFormat method. * @param date the Date value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param fieldPosition The formatting position. On input: an alignment field, * if desired. On output: the offsets of the alignment field. * @return Reference to 'appendTo' parameter. * @stable ICU 2.1 */ UnicodeString& format(UDate date, UnicodeString& appendTo, FieldPosition& fieldPosition) const; /** * Redeclared DateFormat method. * @param date the Date value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param posIter On return, can be used to iterate over positions * of fields generated by this format call. Field values * are defined in UDateFormatField. * @param status Input/output param set to success/failure code. * @return Reference to 'appendTo' parameter. * @stable ICU 4.4 */ UnicodeString& format(UDate date, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const; /** * Redeclared DateFormat method. * @param obj Object to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param status Input/output success/failure code. * @return Reference to 'appendTo' parameter. * @stable ICU 2.0 */ UnicodeString& format(const Formattable& obj, UnicodeString& appendTo, UErrorCode& status) const; /** * Redeclared DateFormat method. * @param date Date value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @return Reference to 'appendTo' parameter. * @stable ICU 2.0 */ UnicodeString& format(UDate date, UnicodeString& appendTo) const; /** * Parse a date/time string beginning at the given parse position. For * example, a time text "07/10/96 4:5 PM, PDT" will be parsed into a Date * that is equivalent to Date(837039928046). * <P> * By default, parsing is lenient: If the input is not in the form used by * this object's format method but can still be parsed as a date, then the * parse succeeds. Clients may insist on strict adherence to the format by * calling setLenient(false). * @see DateFormat::setLenient(boolean) * * @param text The date/time string to be parsed * @param cal A Calendar set on input to the date and time to be used for * missing values in the date/time string being parsed, and set * on output to the parsed date/time. When the calendar type is * different from the internal calendar held by this SimpleDateFormat * instance, the internal calendar will be cloned to a work * calendar set to the same milliseconds and time zone as the * cal parameter, field values will be parsed based on the work * calendar, then the result (milliseconds and time zone) will * be set in this calendar. * @param pos On input, the position at which to start parsing; on * output, the position at which parsing terminated, or the * start position if the parse failed. * @return A valid UDate if the input could be parsed. * @stable ICU 2.1 */ virtual void parse( const UnicodeString& text, Calendar& cal, ParsePosition& pos) const; /** * Parse a date/time string starting at the given parse position. For * example, a time text "07/10/96 4:5 PM, PDT" will be parsed into a Date * that is equivalent to Date(837039928046). * <P> * By default, parsing is lenient: If the input is not in the form used by * this object's format method but can still be parsed as a date, then the * parse succeeds. Clients may insist on strict adherence to the format by * calling setLenient(false). * @see DateFormat::setLenient(boolean) * <P> * Note that the normal date formats associated with some calendars - such * as the Chinese lunar calendar - do not specify enough fields to enable * dates to be parsed unambiguously. In the case of the Chinese lunar * calendar, while the year within the current 60-year cycle is specified, * the number of such cycles since the start date of the calendar (in the * ERA field of the Calendar object) is not normally part of the format, * and parsing may assume the wrong era. For cases such as this it is * recommended that clients parse using the method * parse(const UnicodeString&, Calendar& cal, ParsePosition&) * with the Calendar passed in set to the current date, or to a date * within the era/cycle that should be assumed if absent in the format. * * @param text The date/time string to be parsed * @param pos On input, the position at which to start parsing; on * output, the position at which parsing terminated, or the * start position if the parse failed. * @return A valid UDate if the input could be parsed. * @stable ICU 2.0 */ UDate parse( const UnicodeString& text, ParsePosition& pos) const; /** * Parse a date/time string. For example, a time text "07/10/96 4:5 PM, PDT" * will be parsed into a UDate that is equivalent to Date(837039928046). * Parsing begins at the beginning of the string and proceeds as far as * possible. Assuming no parse errors were encountered, this function * doesn't return any information about how much of the string was consumed * by the parsing. If you need that information, use the version of * parse() that takes a ParsePosition. * <P> * By default, parsing is lenient: If the input is not in the form used by * this object's format method but can still be parsed as a date, then the * parse succeeds. Clients may insist on strict adherence to the format by * calling setLenient(false). * @see DateFormat::setLenient(boolean) * <P> * Note that the normal date formats associated with some calendars - such * as the Chinese lunar calendar - do not specify enough fields to enable * dates to be parsed unambiguously. In the case of the Chinese lunar * calendar, while the year within the current 60-year cycle is specified, * the number of such cycles since the start date of the calendar (in the * ERA field of the Calendar object) is not normally part of the format, * and parsing may assume the wrong era. For cases such as this it is * recommended that clients parse using the method * parse(const UnicodeString&, Calendar& cal, ParsePosition&) * with the Calendar passed in set to the current date, or to a date * within the era/cycle that should be assumed if absent in the format. * * @param text The date/time string to be parsed into a UDate value. * @param status Filled in with U_ZERO_ERROR if the parse was successful, and with * an error value if there was a parse error. * @return A valid UDate if the input could be parsed. * @stable ICU 2.0 */ virtual UDate parse( const UnicodeString& text, UErrorCode& status) const; /** * Set the start UDate used to interpret two-digit year strings. * When dates are parsed having 2-digit year strings, they are placed within * a assumed range of 100 years starting on the two digit start date. For * example, the string "24-Jan-17" may be in the year 1817, 1917, 2017, or * some other year. SimpleDateFormat chooses a year so that the resultant * date is on or after the two digit start date and within 100 years of the * two digit start date. * <P> * By default, the two digit start date is set to 80 years before the current * time at which a SimpleDateFormat object is created. * @param d start UDate used to interpret two-digit year strings. * @param status Filled in with U_ZERO_ERROR if the parse was successful, and with * an error value if there was a parse error. * @stable ICU 2.0 */ virtual void set2DigitYearStart(UDate d, UErrorCode& status); /** * Get the start UDate used to interpret two-digit year strings. * When dates are parsed having 2-digit year strings, they are placed within * a assumed range of 100 years starting on the two digit start date. For * example, the string "24-Jan-17" may be in the year 1817, 1917, 2017, or * some other year. SimpleDateFormat chooses a year so that the resultant * date is on or after the two digit start date and within 100 years of the * two digit start date. * <P> * By default, the two digit start date is set to 80 years before the current * time at which a SimpleDateFormat object is created. * @param status Filled in with U_ZERO_ERROR if the parse was successful, and with * an error value if there was a parse error. * @stable ICU 2.0 */ UDate get2DigitYearStart(UErrorCode& status) const; /** * Return a pattern string describing this date format. * @param result Output param to receive the pattern. * @return A reference to 'result'. * @stable ICU 2.0 */ virtual UnicodeString& toPattern(UnicodeString& result) const; /** * Return a localized pattern string describing this date format. * In most cases, this will return the same thing as toPattern(), * but a locale can specify characters to use in pattern descriptions * in place of the ones described in this class's class documentation. * (Presumably, letters that would be more mnemonic in that locale's * language.) This function would produce a pattern using those * letters. * * @param result Receives the localized pattern. * @param status Output param set to success/failure code on * exit. If the pattern is invalid, this will be * set to a failure result. * @return A reference to 'result'. * @stable ICU 2.0 */ virtual UnicodeString& toLocalizedPattern(UnicodeString& result, UErrorCode& status) const; /** * Apply the given unlocalized pattern string to this date format. * (i.e., after this call, this formatter will format dates according to * the new pattern) * * @param pattern The pattern to be applied. * @stable ICU 2.0 */ virtual void applyPattern(const UnicodeString& pattern); /** * Apply the given localized pattern string to this date format. * (see toLocalizedPattern() for more information on localized patterns.) * * @param pattern The localized pattern to be applied. * @param status Output param set to success/failure code on * exit. If the pattern is invalid, this will be * set to a failure result. * @stable ICU 2.0 */ virtual void applyLocalizedPattern(const UnicodeString& pattern, UErrorCode& status); /** * Gets the date/time formatting symbols (this is an object carrying * the various strings and other symbols used in formatting: e.g., month * names and abbreviations, time zone names, AM/PM strings, etc.) * @return a copy of the date-time formatting data associated * with this date-time formatter. * @stable ICU 2.0 */ virtual const DateFormatSymbols* getDateFormatSymbols(void) const; /** * Set the date/time formatting symbols. The caller no longer owns the * DateFormatSymbols object and should not delete it after making this call. * @param newFormatSymbols the given date-time formatting symbols to copy. * @stable ICU 2.0 */ virtual void adoptDateFormatSymbols(DateFormatSymbols* newFormatSymbols); /** * Set the date/time formatting data. * @param newFormatSymbols the given date-time formatting symbols to copy. * @stable ICU 2.0 */ virtual void setDateFormatSymbols(const DateFormatSymbols& newFormatSymbols); /** * Return the class ID for this class. This is useful only for comparing to * a return value from getDynamicClassID(). For example: * <pre> * . Base* polymorphic_pointer = createPolymorphicObject(); * . if (polymorphic_pointer->getDynamicClassID() == * . erived::getStaticClassID()) ... * </pre> * @return The class ID for all objects of this class. * @stable ICU 2.0 */ static UClassID U_EXPORT2 getStaticClassID(void); /** * Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This * method is to implement a simple version of RTTI, since not all C++ * compilers support genuine RTTI. Polymorphic operator==() and clone() * methods call this method. * * @return The class ID for this object. All objects of a * given class have the same class ID. Objects of * other classes have different class IDs. * @stable ICU 2.0 */ virtual UClassID getDynamicClassID(void) const; /** * Set the calendar to be used by this date format. Initially, the default * calendar for the specified or default locale is used. The caller should * not delete the Calendar object after it is adopted by this call. * Adopting a new calendar will change to the default symbols. * * @param calendarToAdopt Calendar object to be adopted. * @stable ICU 2.0 */ virtual void adoptCalendar(Calendar* calendarToAdopt); /* Cannot use #ifndef U_HIDE_DRAFT_API for the following draft method since it is virtual */ /** * Set the formatter's default value for a particular context type, * such as UDAT_CAPITALIZATION. * @param type The context type for which the default value should be set. * @param value The default value to set for the specified context type. * @param status Input/output status. If at entry this indicates a failure * status, the function will do nothing; otherwise this will be * updated with any new status from the function. * @draft ICU 49 */ virtual void setDefaultContext(UDateFormatContextType type, UDateFormatContextValue value, UErrorCode& status); /* Cannot use #ifndef U_HIDE_DRAFT_API for the following draft method since it is virtual */ /** * Get the formatter's default value for a particular context type, * such as UDAT_CAPITALIZATION. * @param type The context type for which the default value should be obtained. * @param status Input/output status. If at entry this indicates a failure * status, the function will do nothing; otherwise this will be * updated with any new status from the function. * @return The current default value for the specified context type. * @draft ICU 49 */ virtual int32_t getDefaultContext(UDateFormatContextType type, UErrorCode& status) const; #ifndef U_HIDE_INTERNAL_API /** * Sets the TimeZoneFormat to be used by this date/time formatter. * The caller should not delete the TimeZoneFormat object after * it is adopted by this call. * @param timeZoneFormatToAdopt The TimeZoneFormat object to be adopted. * @internal ICU 49 technology preview */ virtual void adoptTimeZoneFormat(TimeZoneFormat* timeZoneFormatToAdopt); /** * Sets the TimeZoneFormat to be used by this date/time formatter. * @param newTimeZoneFormat The TimeZoneFormat object to copy. * @internal ICU 49 technology preview */ virtual void setTimeZoneFormat(const TimeZoneFormat& newTimeZoneFormat); /** * Gets the time zone format object associated with this date/time formatter. * @return the time zone format associated with this date/time formatter. * @internal ICU 49 technology preview */ virtual const TimeZoneFormat* getTimeZoneFormat(void) const; #endif /* U_HIDE_INTERNAL_API */ #ifndef U_HIDE_INTERNAL_API /** * This is for ICU internal use only. Please do not use. * Check whether the 'field' is smaller than all the fields covered in * pattern, return TRUE if it is. The sequence of calendar field, * from large to small is: ERA, YEAR, MONTH, DATE, AM_PM, HOUR, MINUTE,... * @param field the calendar field need to check against * @return TRUE if the 'field' is smaller than all the fields * covered in pattern. FALSE otherwise. * @internal ICU 4.0 */ UBool isFieldUnitIgnored(UCalendarDateFields field) const; /** * This is for ICU internal use only. Please do not use. * Check whether the 'field' is smaller than all the fields covered in * pattern, return TRUE if it is. The sequence of calendar field, * from large to small is: ERA, YEAR, MONTH, DATE, AM_PM, HOUR, MINUTE,... * @param pattern the pattern to check against * @param field the calendar field need to check against * @return TRUE if the 'field' is smaller than all the fields * covered in pattern. FALSE otherwise. * @internal ICU 4.0 */ static UBool isFieldUnitIgnored(const UnicodeString& pattern, UCalendarDateFields field); /** * This is for ICU internal use only. Please do not use. * Get the locale of this simple date formatter. * It is used in DateIntervalFormat. * * @return locale in this simple date formatter * @internal ICU 4.0 */ const Locale& getSmpFmtLocale(void) const; #endif /* U_HIDE_INTERNAL_API */ private: friend class DateFormat; void initializeDefaultCentury(void); SimpleDateFormat(); // default constructor not implemented /** * Used by the DateFormat factory methods to construct a SimpleDateFormat. * @param timeStyle the time style. * @param dateStyle the date style. * @param locale the given locale. * @param status Output param set to success/failure code on * exit. */ SimpleDateFormat(EStyle timeStyle, EStyle dateStyle, const Locale& locale, UErrorCode& status); /** * Construct a SimpleDateFormat for the given locale. If no resource data * is available, create an object of last resort, using hard-coded strings. * This is an internal method, called by DateFormat. It should never fail. * @param locale the given locale. * @param status Output param set to success/failure code on * exit. */ SimpleDateFormat(const Locale& locale, UErrorCode& status); // Use default pattern /** * Hook called by format(... FieldPosition& ...) and format(...FieldPositionIterator&...) */ UnicodeString& _format(Calendar& cal, UDateFormatContextValue capitalizationContext, UnicodeString& appendTo, FieldPositionHandler& handler, UErrorCode& status) const; /** * Called by format() to format a single field. * * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param ch The format character we encountered in the pattern. * @param count Number of characters in the current pattern symbol (e.g., * "yyyy" in the pattern would result in a call to this function * with ch equal to 'y' and count equal to 4) * @param capitalizationContext Capitalization context for this date format. * @param fieldNum Zero-based numbering of current field within the overall format. * @param handler Records information about field positions. * @param cal Calendar to use * @param status Receives a status code, which will be U_ZERO_ERROR if the operation * succeeds. */ void subFormat(UnicodeString &appendTo, UChar ch, int32_t count, UDateFormatContextValue capitalizationContext, int32_t fieldNum, FieldPositionHandler& handler, Calendar& cal, UErrorCode& status) const; // in case of illegal argument /** * Used by subFormat() to format a numeric value. * Appends to toAppendTo a string representation of "value" * having a number of digits between "minDigits" and * "maxDigits". Uses the DateFormat's NumberFormat. * * @param currentNumberFormat * @param appendTo Output parameter to receive result. * Formatted number is appended to existing contents. * @param value Value to format. * @param minDigits Minimum number of digits the result should have * @param maxDigits Maximum number of digits the result should have */ void zeroPaddingNumber(NumberFormat *currentNumberFormat, UnicodeString &appendTo, int32_t value, int32_t minDigits, int32_t maxDigits) const; /** * Return true if the given format character, occuring count * times, represents a numeric field. */ static UBool isNumeric(UChar formatChar, int32_t count); /** * initializes fCalendar from parameters. Returns fCalendar as a convenience. * @param adoptZone Zone to be adopted, or NULL for TimeZone::createDefault(). * @param locale Locale of the calendar * @param status Error code * @return the newly constructed fCalendar */ Calendar *initializeCalendar(TimeZone* adoptZone, const Locale& locale, UErrorCode& status); /** * initializes fSymbols from parameters. * @param locale Locale of the symbols * @param calendar Alias to Calendar that will be used. * @param status Error code */ void initializeSymbols(const Locale& locale, Calendar* calendar, UErrorCode& status); /** * Called by several of the constructors to load pattern data and formatting symbols * out of a resource bundle and initialize the locale based on it. * @param timeStyle The time style, as passed to DateFormat::createDateInstance(). * @param dateStyle The date style, as passed to DateFormat::createTimeInstance(). * @param locale The locale to load the patterns from. * @param status Filled in with an error code if loading the data from the * resources fails. */ void construct(EStyle timeStyle, EStyle dateStyle, const Locale& locale, UErrorCode& status); /** * Called by construct() and the various constructors to set up the SimpleDateFormat's * Calendar and NumberFormat objects. * @param locale The locale for which we want a Calendar and a NumberFormat. * @param status Filled in with an error code if creating either subobject fails. */ void initialize(const Locale& locale, UErrorCode& status); /** * Private code-size reduction function used by subParse. * @param text the time text being parsed. * @param start where to start parsing. * @param field the date field being parsed. * @param stringArray the string array to parsed. * @param stringArrayCount the size of the array. * @param monthPattern pointer to leap month pattern, or NULL if none. * @param cal a Calendar set to the date and time to be formatted * into a date/time string. * @return the new start position if matching succeeded; a negative number * indicating matching failure, otherwise. */ int32_t matchString(const UnicodeString& text, int32_t start, UCalendarDateFields field, const UnicodeString* stringArray, int32_t stringArrayCount, const UnicodeString* monthPattern, Calendar& cal) const; /** * Private code-size reduction function used by subParse. * @param text the time text being parsed. * @param start where to start parsing. * @param field the date field being parsed. * @param stringArray the string array to parsed. * @param stringArrayCount the size of the array. * @param cal a Calendar set to the date and time to be formatted * into a date/time string. * @return the new start position if matching succeeded; a negative number * indicating matching failure, otherwise. */ int32_t matchQuarterString(const UnicodeString& text, int32_t start, UCalendarDateFields field, const UnicodeString* stringArray, int32_t stringArrayCount, Calendar& cal) const; /** * Private function used by subParse to match literal pattern text. * * @param pattern the pattern string * @param patternOffset the starting offset into the pattern text. On * outupt will be set the offset of the first non-literal character in the pattern * @param text the text being parsed * @param textOffset the starting offset into the text. On output * will be set to the offset of the character after the match * @param lenient <code>TRUE</code> if the parse is lenient, <code>FALSE</code> otherwise. * * @return <code>TRUE</code> if the literal text could be matched, <code>FALSE</code> otherwise. */ static UBool matchLiterals(const UnicodeString &pattern, int32_t &patternOffset, const UnicodeString &text, int32_t &textOffset, UBool lenient); /** * Private member function that converts the parsed date strings into * timeFields. Returns -start (for ParsePosition) if failed. * @param text the time text to be parsed. * @param start where to start parsing. * @param ch the pattern character for the date field text to be parsed. * @param count the count of a pattern character. * @param obeyCount if true then the count is strictly obeyed. * @param allowNegative * @param ambiguousYear If true then the two-digit year == the default start year. * @param saveHebrewMonth Used to hang onto month until year is known. * @param cal a Calendar set to the date and time to be formatted * into a date/time string. * @param patLoc * @param numericLeapMonthFormatter If non-null, used to parse numeric leap months. * @return the new start position if matching succeeded; a negative number * indicating matching failure, otherwise. */ int32_t subParse(const UnicodeString& text, int32_t& start, UChar ch, int32_t count, UBool obeyCount, UBool allowNegative, UBool ambiguousYear[], int32_t& saveHebrewMonth, Calendar& cal, int32_t patLoc, MessageFormat * numericLeapMonthFormatter) const; void parseInt(const UnicodeString& text, Formattable& number, ParsePosition& pos, UBool allowNegative, NumberFormat *fmt) const; void parseInt(const UnicodeString& text, Formattable& number, int32_t maxDigits, ParsePosition& pos, UBool allowNegative, NumberFormat *fmt) const; int32_t checkIntSuffix(const UnicodeString& text, int32_t start, int32_t patLoc, UBool isNegative) const; /** * Translate a pattern, mapping each character in the from string to the * corresponding character in the to string. Return an error if the original * pattern contains an unmapped character, or if a quote is unmatched. * Quoted (single quotes only) material is not translated. * @param originalPattern the original pattern. * @param translatedPattern Output param to receive the translited pattern. * @param from the characters to be translited from. * @param to the characters to be translited to. * @param status Receives a status code, which will be U_ZERO_ERROR * if the operation succeeds. */ static void translatePattern(const UnicodeString& originalPattern, UnicodeString& translatedPattern, const UnicodeString& from, const UnicodeString& to, UErrorCode& status); /** * Sets the starting date of the 100-year window that dates with 2-digit years * are considered to fall within. * @param startDate the start date * @param status Receives a status code, which will be U_ZERO_ERROR * if the operation succeeds. */ void parseAmbiguousDatesAsAfter(UDate startDate, UErrorCode& status); /** * Return the length matched by the given affix, or -1 if none. * Runs of white space in the affix, match runs of white space in * the input. * @param affix pattern string, taken as a literal * @param input input text * @param pos offset into input at which to begin matching * @return length of input that matches, or -1 if match failure */ int32_t compareSimpleAffix(const UnicodeString& affix, const UnicodeString& input, int32_t pos) const; /** * Skip over a run of zero or more Pattern_White_Space characters at * pos in text. */ int32_t skipPatternWhiteSpace(const UnicodeString& text, int32_t pos) const; /** * Skip over a run of zero or more isUWhiteSpace() characters at pos * in text. */ int32_t skipUWhiteSpace(const UnicodeString& text, int32_t pos) const; /** * Initialize NumberFormat instances used for numbering system overrides. */ void initNumberFormatters(const Locale &locale,UErrorCode &status); /** * Get the numbering system to be used for a particular field. */ NumberFormat * getNumberFormatByIndex(UDateFormatField index) const; /** * Parse the given override string and set up structures for number formats */ void processOverrideString(const Locale &locale, const UnicodeString &str, int8_t type, UErrorCode &status); /** * Used to map pattern characters to Calendar field identifiers. */ static const UCalendarDateFields fgPatternIndexToCalendarField[]; /** * Map index into pattern character string to DateFormat field number */ static const UDateFormatField fgPatternIndexToDateFormatField[]; /** * Lazy TimeZoneFormat instantiation, semantically const */ TimeZoneFormat *tzFormat() const; /** * Used to map Calendar field to field level. * The larger the level, the smaller the field unit. * For example, UCAL_ERA level is 0, UCAL_YEAR level is 10, * UCAL_MONTH level is 20. */ static const int32_t fgCalendarFieldToLevel[]; static const int32_t fgPatternCharToLevel[]; /** * The formatting pattern for this formatter. */ UnicodeString fPattern; /** * The numbering system override for dates. */ UnicodeString fDateOverride; /** * The numbering system override for times. */ UnicodeString fTimeOverride; /** * The original locale used (for reloading symbols) */ Locale fLocale; /** * A pointer to an object containing the strings to use in formatting (e.g., * month and day names, AM and PM strings, time zone names, etc.) */ DateFormatSymbols* fSymbols; // Owned /** * The time zone formatter */ TimeZoneFormat* fTimeZoneFormat; /** * If dates have ambiguous years, we map them into the century starting * at defaultCenturyStart, which may be any date. If defaultCenturyStart is * set to SYSTEM_DEFAULT_CENTURY, which it is by default, then the system * values are used. The instance values defaultCenturyStart and * defaultCenturyStartYear are only used if explicitly set by the user * through the API method parseAmbiguousDatesAsAfter(). */ UDate fDefaultCenturyStart; /** * See documentation for defaultCenturyStart. */ /*transient*/ int32_t fDefaultCenturyStartYear; int32_t tztype; // here to avoid api change typedef struct NSOverride { NumberFormat *nf; int32_t hash; NSOverride *next; } NSOverride; NumberFormat **fNumberFormatters; NSOverride *fOverrideList; UBool fHaveDefaultCentury; UDateFormatContextValue fDefaultCapitalizationContext; }; inline UDate SimpleDateFormat::get2DigitYearStart(UErrorCode& /*status*/) const { return fDefaultCenturyStart; } inline UnicodeString& SimpleDateFormat::format(const Formattable& obj, UnicodeString& appendTo, UErrorCode& status) const { // Don't use Format:: - use immediate base class only, // in case immediate base modifies behavior later. return DateFormat::format(obj, appendTo, status); } inline UnicodeString& SimpleDateFormat::format(const Formattable& obj, UnicodeString& appendTo, FieldPosition& pos, UErrorCode& status) const { // Don't use Format:: - use immediate base class only, // in case immediate base modifies behavior later. return DateFormat::format(obj, appendTo, pos, status); } inline UnicodeString& SimpleDateFormat::format(const Formattable& obj, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const { // Don't use Format:: - use immediate base class only, // in case immediate base modifies behavior later. return DateFormat::format(obj, appendTo, posIter, status); } inline UnicodeString& SimpleDateFormat::format(UDate date, UnicodeString& appendTo, FieldPosition& fieldPosition) const { // Don't use Format:: - use immediate base class only, // in case immediate base modifies behavior later. return DateFormat::format(date, appendTo, fieldPosition); } inline UnicodeString& SimpleDateFormat::format(UDate date, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const { // Don't use Format:: - use immediate base class only, // in case immediate base modifies behavior later. return DateFormat::format(date, appendTo, posIter, status); } inline UnicodeString& SimpleDateFormat::format(UDate date, UnicodeString& appendTo) const { return DateFormat::format(date, appendTo); } U_NAMESPACE_END #endif /* #if !UCONFIG_NO_FORMATTING */ #endif // _SMPDTFMT //eof