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// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* * Copyright (C) 1997-2016, 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" #if U_SHOW_CPLUSPLUS_API /** * \file * \brief C++ API: Format and parse dates in a language-independent manner. */ #if !UCONFIG_NO_FORMATTING #include "unicode/datefmt.h" #include "unicode/udisplaycontext.h" #include "unicode/tzfmt.h" /* for UTimeZoneFormatTimeType */ #include "unicode/brkiter.h" U_NAMESPACE_BEGIN class DateFormatSymbols; class DateFormat; class MessageFormat; class FieldPositionHandler; class TimeZoneFormat; class SharedNumberFormat; class SimpleDateFormatMutableNFs; class DateIntervalFormat; namespace number { class LocalizedNumberFormatter; } /** * * 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. * * 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(). * * Date and Time Patterns: * * Date and time formats are specified by date and time pattern strings. * Within date and time pattern strings, all unquoted ASCII letters [A-Za-z] are reserved * as pattern letters representing calendar fields. <code>SimpleDateFormat</code> supports * the date and time formatting algorithm and pattern letters defined by * <a href="http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table">UTS#35 * Unicode Locale Data Markup Language (LDML)</a> and further documented for ICU in the * <a href="https://unicode-org.github.io/icu/userguide/format_parse/datetime/#date-field-symbol-table">ICU * User Guide</a>. The following pattern letters are currently available (note that the actual * values depend on CLDR and may change from the examples shown here): * * <table border="1"> * <tr> * <th>Field</th> * <th style="text-align: center">Sym.</th> * <th style="text-align: center">No.</th> * <th>Example</th> * <th>Description</th> * </tr> * <tr> * <th rowspan="3">era</th> * <td style="text-align: center" rowspan="3">G</td> * <td style="text-align: center">1..3</td> * <td>AD</td> * <td rowspan="3">Era - Replaced with the Era string for the current date. One to three letters for the * abbreviated form, four letters for the long (wide) form, five for the narrow form.</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>Anno Domini</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>A</td> * </tr> * <tr> * <th rowspan="6">year</th> * <td style="text-align: center">y</td> * <td style="text-align: center">1..n</td> * <td>1996</td> * <td>Year. Normally the length specifies the padding, but for two letters it also specifies the maximum * length. Example:<div align="center"> * <center> * <table border="1" cellpadding="2" cellspacing="0"> * <tr> * <th>Year</th> * <th style="text-align: right">y</th> * <th style="text-align: right">yy</th> * <th style="text-align: right">yyy</th> * <th style="text-align: right">yyyy</th> * <th style="text-align: right">yyyyy</th> * </tr> * <tr> * <td>AD 1</td> * <td style="text-align: right">1</td> * <td style="text-align: right">01</td> * <td style="text-align: right">001</td> * <td style="text-align: right">0001</td> * <td style="text-align: right">00001</td> * </tr> * <tr> * <td>AD 12</td> * <td style="text-align: right">12</td> * <td style="text-align: right">12</td> * <td style="text-align: right">012</td> * <td style="text-align: right">0012</td> * <td style="text-align: right">00012</td> * </tr> * <tr> * <td>AD 123</td> * <td style="text-align: right">123</td> * <td style="text-align: right">23</td> * <td style="text-align: right">123</td> * <td style="text-align: right">0123</td> * <td style="text-align: right">00123</td> * </tr> * <tr> * <td>AD 1234</td> * <td style="text-align: right">1234</td> * <td style="text-align: right">34</td> * <td style="text-align: right">1234</td> * <td style="text-align: right">1234</td> * <td style="text-align: right">01234</td> * </tr> * <tr> * <td>AD 12345</td> * <td style="text-align: right">12345</td> * <td style="text-align: right">45</td> * <td style="text-align: right">12345</td> * <td style="text-align: right">12345</td> * <td style="text-align: right">12345</td> * </tr> * </table> * </center></div> * </td> * </tr> * <tr> * <td style="text-align: center">Y</td> * <td style="text-align: center">1..n</td> * <td>1997</td> * <td>Year (in "Week of Year" based calendars). Normally the length specifies the padding, * but for two letters it also specifies the maximum length. This year designation is used in ISO * year-week calendar as defined by ISO 8601, but can be used in non-Gregorian based calendar systems * where week date processing is desired. May not always be the same value as calendar year.</td> * </tr> * <tr> * <td style="text-align: center">u</td> * <td style="text-align: center">1..n</td> * <td>4601</td> * <td>Extended year. This is a single number designating the year of this calendar system, encompassing * all supra-year fields. For example, for the Julian calendar system, year numbers are positive, with an * era of BCE or CE. An extended year value for the Julian calendar system assigns positive values to CE * years and negative values to BCE years, with 1 BCE being year 0.</td> * </tr> * <tr> * <td style="text-align: center" rowspan="3">U</td> * <td style="text-align: center">1..3</td> * <td>甲子</td> * <td rowspan="3">Cyclic year name. Calendars such as the Chinese lunar calendar (and related calendars) * and the Hindu calendars use 60-year cycles of year names. Use one through three letters for the abbreviated * name, four for the full (wide) name, or five for the narrow name (currently the data only provides abbreviated names, * which will be used for all requested name widths). If the calendar does not provide cyclic year name data, * or if the year value to be formatted is out of the range of years for which cyclic name data is provided, * then numeric formatting is used (behaves like 'y').</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>(currently also 甲子)</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>(currently also 甲子)</td> * </tr> * <tr> * <th rowspan="6">quarter</th> * <td rowspan="3" style="text-align: center">Q</td> * <td style="text-align: center">1..2</td> * <td>02</td> * <td rowspan="3">Quarter - Use one or two for the numerical quarter, three for the abbreviation, or four for the * full (wide) name (five for the narrow name is not yet supported).</td> * </tr> * <tr> * <td style="text-align: center">3</td> * <td>Q2</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>2nd quarter</td> * </tr> * <tr> * <td rowspan="3" style="text-align: center">q</td> * <td style="text-align: center">1..2</td> * <td>02</td> * <td rowspan="3">Stand-Alone Quarter - Use one or two for the numerical quarter, three for the abbreviation, * or four for the full name (five for the narrow name is not yet supported).</td> * </tr> * <tr> * <td style="text-align: center">3</td> * <td>Q2</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>2nd quarter</td> * </tr> * <tr> * <th rowspan="8">month</th> * <td rowspan="4" style="text-align: center">M</td> * <td style="text-align: center">1..2</td> * <td>09</td> * <td rowspan="4">Month - Use one or two for the numerical month, three for the abbreviation, four for * the full (wide) name, or five for the narrow name. With two ("MM"), the month number is zero-padded * if necessary (e.g. "08")</td> * </tr> * <tr> * <td style="text-align: center">3</td> * <td>Sep</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>September</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>S</td> * </tr> * <tr> * <td rowspan="4" style="text-align: center">L</td> * <td style="text-align: center">1..2</td> * <td>09</td> * <td rowspan="4">Stand-Alone Month - Use one or two for the numerical month, three for the abbreviation, * four for the full (wide) name, or 5 for the narrow name. With two ("LL"), the month number is zero-padded if * necessary (e.g. "08")</td> * </tr> * <tr> * <td style="text-align: center">3</td> * <td>Sep</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>September</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>S</td> * </tr> * <tr> * <th rowspan="2">week</th> * <td style="text-align: center">w</td> * <td style="text-align: center">1..2</td> * <td>27</td> * <td>Week of Year. Use "w" to show the minimum number of digits, or "ww" to always show two digits * (zero-padding if necessary, e.g. "08").</td> * </tr> * <tr> * <td style="text-align: center">W</td> * <td style="text-align: center">1</td> * <td>3</td> * <td>Week of Month</td> * </tr> * <tr> * <th rowspan="4">day</th> * <td style="text-align: center">d</td> * <td style="text-align: center">1..2</td> * <td>1</td> * <td>Date - Day of the month. Use "d" to show the minimum number of digits, or "dd" to always show * two digits (zero-padding if necessary, e.g. "08").</td> * </tr> * <tr> * <td style="text-align: center">D</td> * <td style="text-align: center">1..3</td> * <td>345</td> * <td>Day of year</td> * </tr> * <tr> * <td style="text-align: center">F</td> * <td style="text-align: center">1</td> * <td>2</td> * <td>Day of Week in Month. The example is for the 2nd Wed in July</td> * </tr> * <tr> * <td style="text-align: center">g</td> * <td style="text-align: center">1..n</td> * <td>2451334</td> * <td>Modified Julian day. This is different from the conventional Julian day number in two regards. * First, it demarcates days at local zone midnight, rather than noon GMT. Second, it is a local number; * that is, it depends on the local time zone. It can be thought of as a single number that encompasses * all the date-related fields.</td> * </tr> * <tr> * <th rowspan="14">week * day</th> * <td rowspan="4" style="text-align: center">E</td> * <td style="text-align: center">1..3</td> * <td>Tue</td> * <td rowspan="4">Day of week - Use one through three letters for the short day, four for the full (wide) name, * five for the narrow name, or six for the short name.</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>Tuesday</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>T</td> * </tr> * <tr> * <td style="text-align: center">6</td> * <td>Tu</td> * </tr> * <tr> * <td rowspan="5" style="text-align: center">e</td> * <td style="text-align: center">1..2</td> * <td>2</td> * <td rowspan="5">Local day of week. Same as E except adds a numeric value that will depend on the local * starting day of the week, using one or two letters. For this example, Monday is the first day of the week.</td> * </tr> * <tr> * <td style="text-align: center">3</td> * <td>Tue</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>Tuesday</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>T</td> * </tr> * <tr> * <td style="text-align: center">6</td> * <td>Tu</td> * </tr> * <tr> * <td rowspan="5" style="text-align: center">c</td> * <td style="text-align: center">1</td> * <td>2</td> * <td rowspan="5">Stand-Alone local day of week - Use one letter for the local numeric value (same * as 'e'), three for the short day, four for the full (wide) name, five for the narrow name, or six for * the short name.</td> * </tr> * <tr> * <td style="text-align: center">3</td> * <td>Tue</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>Tuesday</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>T</td> * </tr> * <tr> * <td style="text-align: center">6</td> * <td>Tu</td> * </tr> * <tr> * <th>period</th> * <td style="text-align: center">a</td> * <td style="text-align: center">1</td> * <td>AM</td> * <td>AM or PM</td> * </tr> * <tr> * <th rowspan="4">hour</th> * <td style="text-align: center">h</td> * <td style="text-align: center">1..2</td> * <td>11</td> * <td>Hour [1-12]. When used in skeleton data or in a skeleton passed in an API for flexible data pattern * generation, it should match the 12-hour-cycle format preferred by the locale (h or K); it should not match * a 24-hour-cycle format (H or k). Use hh for zero padding.</td> * </tr> * <tr> * <td style="text-align: center">H</td> * <td style="text-align: center">1..2</td> * <td>13</td> * <td>Hour [0-23]. When used in skeleton data or in a skeleton passed in an API for flexible data pattern * generation, it should match the 24-hour-cycle format preferred by the locale (H or k); it should not match a * 12-hour-cycle format (h or K). Use HH for zero padding.</td> * </tr> * <tr> * <td style="text-align: center">K</td> * <td style="text-align: center">1..2</td> * <td>0</td> * <td>Hour [0-11]. When used in a skeleton, only matches K or h, see above. Use KK for zero padding.</td> * </tr> * <tr> * <td style="text-align: center">k</td> * <td style="text-align: center">1..2</td> * <td>24</td> * <td>Hour [1-24]. When used in a skeleton, only matches k or H, see above. Use kk for zero padding.</td> * </tr> * <tr> * <th>minute</th> * <td style="text-align: center">m</td> * <td style="text-align: center">1..2</td> * <td>59</td> * <td>Minute. Use "m" to show the minimum number of digits, or "mm" to always show two digits * (zero-padding if necessary, e.g. "08").</td> * </tr> * <tr> * <th rowspan="3">second</th> * <td style="text-align: center">s</td> * <td style="text-align: center">1..2</td> * <td>12</td> * <td>Second. Use "s" to show the minimum number of digits, or "ss" to always show two digits * (zero-padding if necessary, e.g. "08").</td> * </tr> * <tr> * <td style="text-align: center">S</td> * <td style="text-align: center">1..n</td> * <td>3450</td> * <td>Fractional Second - truncates (like other time fields) to the count of letters when formatting. * Appends zeros if more than 3 letters specified. Truncates at three significant digits when parsing. * (example shows display using pattern SSSS for seconds value 12.34567)</td> * </tr> * <tr> * <td style="text-align: center">A</td> * <td style="text-align: center">1..n</td> * <td>69540000</td> * <td>Milliseconds in day. This field behaves exactly like a composite of all time-related fields, * not including the zone fields. As such, it also reflects discontinuities of those fields on DST transition * days. On a day of DST onset, it will jump forward. On a day of DST cessation, it will jump backward. This * reflects the fact that is must be combined with the offset field to obtain a unique local time value.</td> * </tr> * <tr> * <th rowspan="23">zone</th> * <td rowspan="2" style="text-align: center">z</td> * <td style="text-align: center">1..3</td> * <td>PDT</td> * <td>The short specific non-location format. * Where that is unavailable, falls back to the short localized GMT format ("O").</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>Pacific Daylight Time</td> * <td>The long specific non-location format. * Where that is unavailable, falls back to the long localized GMT format ("OOOO").</td> * </tr> * <tr> * <td rowspan="3" style="text-align: center">Z</td> * <td style="text-align: center">1..3</td> * <td>-0800</td> * <td>The ISO8601 basic format with hours, minutes and optional seconds fields. * The format is equivalent to RFC 822 zone format (when optional seconds field is absent). * This is equivalent to the "xxxx" specifier.</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>GMT-8:00</td> * <td>The long localized GMT format. * This is equivalent to the "OOOO" specifier.</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>-08:00 * -07:52:58</td> * <td>The ISO8601 extended format with hours, minutes and optional seconds fields. * The ISO8601 UTC indicator "Z" is used when local time offset is 0. * This is equivalent to the "XXXXX" specifier.</td> * </tr> * <tr> * <td rowspan="2" style="text-align: center">O</td> * <td style="text-align: center">1</td> * <td>GMT-8</td> * <td>The short localized GMT format.</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>GMT-08:00</td> * <td>The long localized GMT format.</td> * </tr> * <tr> * <td rowspan="2" style="text-align: center">v</td> * <td style="text-align: center">1</td> * <td>PT</td> * <td>The short generic non-location format. * Where that is unavailable, falls back to the generic location format ("VVVV"), * then the short localized GMT format as the final fallback.</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>Pacific Time</td> * <td>The long generic non-location format. * Where that is unavailable, falls back to generic location format ("VVVV"). * </tr> * <tr> * <td rowspan="4" style="text-align: center">V</td> * <td style="text-align: center">1</td> * <td>uslax</td> * <td>The short time zone ID. * Where that is unavailable, the special short time zone ID unk (Unknown Zone) is used. * Note: This specifier was originally used for a variant of the short specific non-location format, * but it was deprecated in the later version of the LDML specification. In CLDR 23/ICU 51, the definition of * the specifier was changed to designate a short time zone ID.</td> * </tr> * <tr> * <td style="text-align: center">2</td> * <td>America/Los_Angeles</td> * <td>The long time zone ID.</td> * </tr> * <tr> * <td style="text-align: center">3</td> * <td>Los Angeles</td> * <td>The exemplar city (location) for the time zone. * Where that is unavailable, the localized exemplar city name for the special zone Etc/Unknown is used * as the fallback (for example, "Unknown City"). </td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>Los Angeles Time</td> * <td>The generic location format. * Where that is unavailable, falls back to the long localized GMT format ("OOOO"; * Note: Fallback is only necessary with a GMT-style Time Zone ID, like Etc/GMT-830.) * This is especially useful when presenting possible timezone choices for user selection, * since the naming is more uniform than the "v" format.</td> * </tr> * <tr> * <td rowspan="5" style="text-align: center">X</td> * <td style="text-align: center">1</td> * <td>-08 * +0530 * Z</td> * <td>The ISO8601 basic format with hours field and optional minutes field. * The ISO8601 UTC indicator "Z" is used when local time offset is 0.</td> * </tr> * <tr> * <td style="text-align: center">2</td> * <td>-0800 * Z</td> * <td>The ISO8601 basic format with hours and minutes fields. * The ISO8601 UTC indicator "Z" is used when local time offset is 0.</td> * </tr> * <tr> * <td style="text-align: center">3</td> * <td>-08:00 * Z</td> * <td>The ISO8601 extended format with hours and minutes fields. * The ISO8601 UTC indicator "Z" is used when local time offset is 0.</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>-0800 * -075258 * Z</td> * <td>The ISO8601 basic format with hours, minutes and optional seconds fields. * (Note: The seconds field is not supported by the ISO8601 specification.) * The ISO8601 UTC indicator "Z" is used when local time offset is 0.</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>-08:00 * -07:52:58 * Z</td> * <td>The ISO8601 extended format with hours, minutes and optional seconds fields. * (Note: The seconds field is not supported by the ISO8601 specification.) * The ISO8601 UTC indicator "Z" is used when local time offset is 0.</td> * </tr> * <tr> * <td rowspan="5" style="text-align: center">x</td> * <td style="text-align: center">1</td> * <td>-08 * +0530</td> * <td>The ISO8601 basic format with hours field and optional minutes field.</td> * </tr> * <tr> * <td style="text-align: center">2</td> * <td>-0800</td> * <td>The ISO8601 basic format with hours and minutes fields.</td> * </tr> * <tr> * <td style="text-align: center">3</td> * <td>-08:00</td> * <td>The ISO8601 extended format with hours and minutes fields.</td> * </tr> * <tr> * <td style="text-align: center">4</td> * <td>-0800 * -075258</td> * <td>The ISO8601 basic format with hours, minutes and optional seconds fields. * (Note: The seconds field is not supported by the ISO8601 specification.)</td> * </tr> * <tr> * <td style="text-align: center">5</td> * <td>-08:00 * -07:52:58</td> * <td>The ISO8601 extended format with hours, minutes and optional seconds fields. * (Note: The seconds field is not supported by the ISO8601 specification.)</td> * </tr> * </table> * * * 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. * * A pattern containing any invalid pattern letter will result in a failing * UErrorCode result during formatting or parsing. * * 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(FieldPosition::DONT_CARE); * 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. * * * 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. * * * 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. * * * 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. * * * For time zones that have no names, SimpleDateFormat uses strings GMT+hours:minutes or * GMT-hours:minutes. * * 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. * * User subclasses are not supported. 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. * * [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. * * [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. * * 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 formatted 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. * * * [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. * * [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. * * 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 formatted 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. * * [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 SimpleDateFormat* clone() const override; /** * 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 bool operator==(const Format& other) const override; 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. * * 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 override; /** * Format a date or time, which is the standard millis since 24:00 GMT, Jan * 1, 1970. Overrides DateFormat pure virtual method. * * 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 override; using DateFormat::parse; /** * 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). * * 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. * @stable ICU 2.1 */ virtual void parse( const UnicodeString& text, Calendar& cal, ParsePosition& pos) const override; /** * 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. * * 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. * * 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. * * Note: This implementation depends on DateFormatSymbols::getLocalPatternChars() * to get localized format pattern characters. ICU does not include * localized pattern character data, therefore, unless user sets localized * pattern characters manually, this method returns the same result as * toPattern(). * * @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 override; /** * 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) override; /* Cannot use #ifndef U_HIDE_INTERNAL_API for the following methods since they are virtual */ /** * 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; /** * Set a particular UDisplayContext value in the formatter, such as * UDISPCTX_CAPITALIZATION_FOR_STANDALONE. Note: For getContext, see * DateFormat. * @param value The UDisplayContext value to set. * @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. * @stable ICU 53 */ virtual void setContext(UDisplayContext value, UErrorCode& status) override; /** * Overrides base class method and * This method clears per field NumberFormat instances * previously set by {@see adoptNumberFormat(const UnicodeString&, NumberFormat*, UErrorCode)} * @param formatToAdopt the NumbeferFormat used * @stable ICU 54 */ void adoptNumberFormat(NumberFormat *formatToAdopt) override; /** * Allow the user to set the NumberFormat for several fields * It can be a single field like: "y"(year) or "M"(month) * It can be several field combined together: "yM"(year and month) * Note: * 1 symbol field is enough for multiple symbol field (so "y" will override "yy", "yyy") * If the field is not numeric, then override has no effect (like "MMM" will use abbreviation, not numerical field) * Per field NumberFormat can also be cleared in {@see DateFormat::setNumberFormat(const NumberFormat& newNumberFormat)} * * @param fields the fields to override(like y) * @param formatToAdopt the NumbeferFormat used * @param status Receives a status code, which will be U_ZERO_ERROR * if the operation succeeds. * @stable ICU 54 */ void adoptNumberFormat(const UnicodeString& fields, NumberFormat *formatToAdopt, UErrorCode &status); /** * Get the numbering system to be used for a particular field. * @param field The UDateFormatField to get * @stable ICU 54 */ const NumberFormat * getNumberFormatForField(char16_t field) const; #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; friend class DateIntervalFormat; void initializeDefaultCentury(void); void initializeBooleanAttributes(void); SimpleDateFormat() = delete; // 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, 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, char16_t ch, int32_t count, UDisplayContext capitalizationContext, int32_t fieldNum, char16_t fieldToOutput, 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(const NumberFormat *currentNumberFormat, UnicodeString &appendTo, int32_t value, int32_t minDigits, int32_t maxDigits) const; /** * Return true if the given format character, occurring count * times, represents a numeric field. */ static UBool isNumeric(char16_t formatChar, int32_t count); /** * Returns true if the patternOffset is at the start of a numeric field. */ static UBool isAtNumericField(const UnicodeString &pattern, int32_t patternOffset); /** * Returns true if the patternOffset is right after a non-numeric field. */ static UBool isAfterNonNumericField(const UnicodeString &pattern, int32_t patternOffset); /** * 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); /** * 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. Only for UCAL_MONTH * @param text the time text being parsed. * @param start where to start parsing. * @param wideStringArray the wide string array to parsed. * @param shortStringArray the short string array to parsed. * @param stringArrayCount the size of the string arrays. * @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 matchAlphaMonthStrings(const UnicodeString& text, int32_t start, const UnicodeString* wideStringArray, const UnicodeString* shortStringArray, int32_t stringArrayCount, 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; /** * Used by subParse() to match localized day period strings. */ int32_t matchDayPeriodStrings(const UnicodeString& text, int32_t start, const UnicodeString* stringArray, int32_t stringArrayCount, int32_t &dayPeriod) 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 * output 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 whitespaceLenient <code>true</code> if whitespace parse is lenient, <code>false</code> otherwise. * @param partialMatchLenient <code>true</code> if partial match parse is lenient, <code>false</code> otherwise. * @param oldLeniency <code>true</code> if old leniency control 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 whitespaceLenient, UBool partialMatchLenient, UBool oldLeniency); /** * 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. * @param tzTimeType the type of parsed time zone - standard, daylight or unknown (output). * This parameter can be NULL if caller does not need the information. * @return the new start position if matching succeeded; a negative number * indicating matching failure, otherwise. */ int32_t subParse(const UnicodeString& text, int32_t& start, char16_t ch, int32_t count, UBool obeyCount, UBool allowNegative, UBool ambiguousYear[], int32_t& saveHebrewMonth, Calendar& cal, int32_t patLoc, MessageFormat * numericLeapMonthFormatter, UTimeZoneFormatTimeType *tzTimeType, int32_t *dayPeriod=NULL) const; void parseInt(const UnicodeString& text, Formattable& number, ParsePosition& pos, UBool allowNegative, const NumberFormat *fmt) const; void parseInt(const UnicodeString& text, Formattable& number, int32_t maxDigits, ParsePosition& pos, UBool allowNegative, const NumberFormat *fmt) const; int32_t checkIntSuffix(const UnicodeString& text, int32_t start, int32_t patLoc, UBool isNegative) const; /** * Counts number of digit code points in the specified text. * * @param text input text * @param start start index, inclusive * @param end end index, exclusive * @return number of digits found in the text in the specified range. */ int32_t countDigits(const UnicodeString& text, int32_t start, int32_t end) 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 LocalizedNumberFormatter instances used for speedup. */ void initFastNumberFormatters(UErrorCode& status); /** * Delete the LocalizedNumberFormatter instances used for speedup. */ void freeFastNumberFormatters(); /** * Initialize NumberFormat instances used for numbering system overrides. */ void initNumberFormatters(const Locale &locale,UErrorCode &status); /** * 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(UErrorCode &status) const; const NumberFormat* getNumberFormatByIndex(UDateFormatField index) 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[]; /** * Map calendar field letter into calendar field level. */ static int32_t getLevelFromChar(char16_t ch); /** * Tell if a character can be used to define a field in a format string. */ static UBool isSyntaxChar(char16_t ch); /** * 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; UBool fHasMinute; UBool fHasSecond; UBool fHasHanYearChar; // pattern contains the Han year character \u5E74 /** * Sets fHasMinutes and fHasSeconds. */ void parsePattern(); /** * See documentation for defaultCenturyStart. */ /*transient*/ int32_t fDefaultCenturyStartYear; struct NSOverride : public UMemory { const SharedNumberFormat *snf; int32_t hash; NSOverride *next; void free(); NSOverride() : snf(NULL), hash(0), next(NULL) { } ~NSOverride(); }; /** * The number format in use for each date field. NULL means fall back * to fNumberFormat in DateFormat. */ const SharedNumberFormat **fSharedNumberFormatters; enum NumberFormatterKey { SMPDTFMT_NF_1x10, SMPDTFMT_NF_2x10, SMPDTFMT_NF_3x10, SMPDTFMT_NF_4x10, SMPDTFMT_NF_2x2, SMPDTFMT_NF_COUNT }; /** * Number formatters pre-allocated for fast performance on the most common integer lengths. */ const number::LocalizedNumberFormatter* fFastNumberFormatters[SMPDTFMT_NF_COUNT] = {}; UBool fHaveDefaultCentury; const BreakIterator* fCapitalizationBrkIter; }; inline UDate SimpleDateFormat::get2DigitYearStart(UErrorCode& /*status*/) const { return fDefaultCenturyStart; } U_NAMESPACE_END #endif /* #if !UCONFIG_NO_FORMATTING */ #endif /* U_SHOW_CPLUSPLUS_API */ #endif // _SMPDTFMT //eof