/usr/include/x86_64-linux-gnu/unicode/dtitvfmt.h is in libicu-dev 52.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 | /********************************************************************************
* Copyright (C) 2008-2013, International Business Machines Corporation and
* others. All Rights Reserved.
*******************************************************************************
*
* File DTITVFMT.H
*
*******************************************************************************
*/
#ifndef __DTITVFMT_H__
#define __DTITVFMT_H__
#include "unicode/utypes.h"
/**
* \file
* \brief C++ API: Format and parse date interval in a language-independent manner.
*/
#if !UCONFIG_NO_FORMATTING
#include "unicode/ucal.h"
#include "unicode/smpdtfmt.h"
#include "unicode/dtintrv.h"
#include "unicode/dtitvinf.h"
#include "unicode/dtptngen.h"
U_NAMESPACE_BEGIN
/**
* DateIntervalFormat is a class for formatting and parsing date
* intervals in a language-independent manner.
* Only formatting is supported, parsing is not supported.
*
* <P>
* Date interval means from one date to another date,
* for example, from "Jan 11, 2008" to "Jan 18, 2008".
* We introduced class DateInterval to represent it.
* DateInterval is a pair of UDate, which is
* the standard milliseconds since 24:00 GMT, Jan 1, 1970.
*
* <P>
* DateIntervalFormat formats a DateInterval into
* text as compactly as possible.
* For example, the date interval format from "Jan 11, 2008" to "Jan 18,. 2008"
* is "Jan 11-18, 2008" for English.
* And it parses text into DateInterval,
* although initially, parsing is not supported.
*
* <P>
* There is no structural information in date time patterns.
* For any punctuations and string literals inside a date time pattern,
* we do not know whether it is just a separator, or a prefix, or a suffix.
* Without such information, so, it is difficult to generate a sub-pattern
* (or super-pattern) by algorithm.
* So, formatting a DateInterval is pattern-driven. It is very
* similar to formatting in SimpleDateFormat.
* We introduce class DateIntervalInfo to save date interval
* patterns, similar to date time pattern in SimpleDateFormat.
*
* <P>
* Logically, the interval patterns are mappings
* from (skeleton, the_largest_different_calendar_field)
* to (date_interval_pattern).
*
* <P>
* A skeleton
* <ol>
* <li>
* only keeps the field pattern letter and ignores all other parts
* in a pattern, such as space, punctuations, and string literals.
* </li>
* <li>
* hides the order of fields.
* </li>
* <li>
* might hide a field's pattern letter length.
* </li>
* </ol>
*
* For those non-digit calendar fields, the pattern letter length is
* important, such as MMM, MMMM, and MMMMM; EEE and EEEE,
* and the field's pattern letter length is honored.
*
* For the digit calendar fields, such as M or MM, d or dd, yy or yyyy,
* the field pattern length is ignored and the best match, which is defined
* in date time patterns, will be returned without honor the field pattern
* letter length in skeleton.
*
* <P>
* The calendar fields we support for interval formatting are:
* year, month, date, day-of-week, am-pm, hour, hour-of-day, and minute.
* Those calendar fields can be defined in the following order:
* year > month > date > hour (in day) > minute
*
* The largest different calendar fields between 2 calendars is the
* first different calendar field in above order.
*
* For example: the largest different calendar fields between "Jan 10, 2007"
* and "Feb 20, 2008" is year.
*
* <P>
* For other calendar fields, the compact interval formatting is not
* supported. And the interval format will be fall back to fall-back
* patterns, which is mostly "{date0} - {date1}".
*
* <P>
* There is a set of pre-defined static skeleton strings.
* There are pre-defined interval patterns for those pre-defined skeletons
* in locales' resource files.
* For example, for a skeleton UDAT_YEAR_ABBR_MONTH_DAY, which is "yMMMd",
* in en_US, if the largest different calendar field between date1 and date2
* is "year", the date interval pattern is "MMM d, yyyy - MMM d, yyyy",
* such as "Jan 10, 2007 - Jan 10, 2008".
* If the largest different calendar field between date1 and date2 is "month",
* the date interval pattern is "MMM d - MMM d, yyyy",
* such as "Jan 10 - Feb 10, 2007".
* If the largest different calendar field between date1 and date2 is "day",
* the date interval pattern is "MMM d-d, yyyy", such as "Jan 10-20, 2007".
*
* For date skeleton, the interval patterns when year, or month, or date is
* different are defined in resource files.
* For time skeleton, the interval patterns when am/pm, or hour, or minute is
* different are defined in resource files.
*
* <P>
* If a skeleton is not found in a locale's DateIntervalInfo, which means
* the interval patterns for the skeleton is not defined in resource file,
* the interval pattern will falls back to the interval "fallback" pattern
* defined in resource file.
* If the interval "fallback" pattern is not defined, the default fall-back
* is "{date0} - {data1}".
*
* <P>
* For the combination of date and time,
* The rule to generate interval patterns are:
* <ol>
* <li>
* when the year, month, or day differs, falls back to fall-back
* interval pattern, which mostly is the concatenate the two original
* expressions with a separator between,
* For example, interval pattern from "Jan 10, 2007 10:10 am"
* to "Jan 11, 2007 10:10am" is
* "Jan 10, 2007 10:10 am - Jan 11, 2007 10:10am"
* </li>
* <li>
* otherwise, present the date followed by the range expression
* for the time.
* For example, interval pattern from "Jan 10, 2007 10:10 am"
* to "Jan 10, 2007 11:10am" is "Jan 10, 2007 10:10 am - 11:10am"
* </li>
* </ol>
*
*
* <P>
* If two dates are the same, the interval pattern is the single date pattern.
* For example, interval pattern from "Jan 10, 2007" to "Jan 10, 2007" is
* "Jan 10, 2007".
*
* Or if the presenting fields between 2 dates have the exact same values,
* the interval pattern is the single date pattern.
* For example, if user only requests year and month,
* the interval pattern from "Jan 10, 2007" to "Jan 20, 2007" is "Jan 2007".
*
* <P>
* DateIntervalFormat needs the following information for correct
* formatting: time zone, calendar type, pattern, date format symbols,
* and date interval patterns.
* It can be instantiated in 2 ways:
* <ol>
* <li>
* create an instance using default or given locale plus given skeleton.
* Users are encouraged to created date interval formatter this way and
* to use the pre-defined skeleton macros, such as
* UDAT_YEAR_NUM_MONTH, which consists the calendar fields and
* the format style.
* </li>
* <li>
* create an instance using default or given locale plus given skeleton
* plus a given DateIntervalInfo.
* This factory method is for powerful users who want to provide their own
* interval patterns.
* Locale provides the timezone, calendar, and format symbols information.
* Local plus skeleton provides full pattern information.
* DateIntervalInfo provides the date interval patterns.
* </li>
* </ol>
*
* <P>
* For the calendar field pattern letter, such as G, y, M, d, a, h, H, m, s etc.
* DateIntervalFormat uses the same syntax as that of
* DateTime format.
*
* <P>
* Code Sample: general usage
* <pre>
* \code
* // the date interval object which the DateIntervalFormat formats on
* // and parses into
* DateInterval* dtInterval = new DateInterval(1000*3600*24, 1000*3600*24*2);
* UErrorCode status = U_ZERO_ERROR;
* DateIntervalFormat* dtIntervalFmt = DateIntervalFormat::createInstance(
* UDAT_YEAR_MONTH_DAY,
* Locale("en", "GB", ""), status);
* UnicodeUnicodeString dateIntervalString;
* FieldPosition pos = 0;
* // formatting
* dtIntervalFmt->format(dtInterval, dateIntervalUnicodeString, pos, status);
* delete dtIntervalFmt;
* \endcode
* </pre>
*/
class U_I18N_API DateIntervalFormat : public Format {
public:
/**
* Construct a DateIntervalFormat from skeleton and the default locale.
*
* This is a convenient override of
* createInstance(const UnicodeString& skeleton, const Locale& locale,
* UErrorCode&)
* with the value of locale as default locale.
*
* @param skeleton the skeleton on which interval format based.
* @param status output param set to success/failure code on exit
* @return a date time interval formatter which the caller owns.
* @stable ICU 4.0
*/
static DateIntervalFormat* U_EXPORT2 createInstance(
const UnicodeString& skeleton,
UErrorCode& status);
/**
* Construct a DateIntervalFormat from skeleton and a given locale.
* <P>
* In this factory method,
* the date interval pattern information is load from resource files.
* Users are encouraged to created date interval formatter this way and
* to use the pre-defined skeleton macros.
*
* <P>
* There are pre-defined skeletons (defined in udate.h) having predefined
* interval patterns in resource files.
* Users are encouraged to use those macros.
* For example:
* DateIntervalFormat::createInstance(UDAT_MONTH_DAY, status)
*
* The given Locale provides the interval patterns.
* For example, for en_GB, if skeleton is UDAT_YEAR_ABBR_MONTH_WEEKDAY_DAY,
* which is "yMMMEEEd",
* the interval patterns defined in resource file to above skeleton are:
* "EEE, d MMM, yyyy - EEE, d MMM, yyyy" for year differs,
* "EEE, d MMM - EEE, d MMM, yyyy" for month differs,
* "EEE, d - EEE, d MMM, yyyy" for day differs,
* @param skeleton the skeleton on which the interval format is based.
* @param locale the given locale
* @param status output param set to success/failure code on exit
* @return a date time interval formatter which the caller owns.
* @stable ICU 4.0
* <p>
* <h4>Sample code</h4>
* \snippet samples/dtitvfmtsample/dtitvfmtsample.cpp dtitvfmtPreDefined1
* \snippet samples/dtitvfmtsample/dtitvfmtsample.cpp dtitvfmtPreDefined
* <p>
*/
static DateIntervalFormat* U_EXPORT2 createInstance(
const UnicodeString& skeleton,
const Locale& locale,
UErrorCode& status);
/**
* Construct a DateIntervalFormat from skeleton
* DateIntervalInfo, and default locale.
*
* This is a convenient override of
* createInstance(const UnicodeString& skeleton, const Locale& locale,
* const DateIntervalInfo& dtitvinf, UErrorCode&)
* with the locale value as default locale.
*
* @param skeleton the skeleton on which interval format based.
* @param dtitvinf the DateIntervalInfo object.
* @param status output param set to success/failure code on exit
* @return a date time interval formatter which the caller owns.
* @stable ICU 4.0
*/
static DateIntervalFormat* U_EXPORT2 createInstance(
const UnicodeString& skeleton,
const DateIntervalInfo& dtitvinf,
UErrorCode& status);
/**
* Construct a DateIntervalFormat from skeleton
* a DateIntervalInfo, and the given locale.
*
* <P>
* In this factory method, user provides its own date interval pattern
* information, instead of using those pre-defined data in resource file.
* This factory method is for powerful users who want to provide their own
* interval patterns.
* <P>
* There are pre-defined skeletons (defined in udate.h) having predefined
* interval patterns in resource files.
* Users are encouraged to use those macros.
* For example:
* DateIntervalFormat::createInstance(UDAT_MONTH_DAY, status)
*
* The DateIntervalInfo provides the interval patterns.
* and the DateIntervalInfo ownership remains to the caller.
*
* User are encouraged to set default interval pattern in DateIntervalInfo
* as well, if they want to set other interval patterns ( instead of
* reading the interval patterns from resource files).
* When the corresponding interval pattern for a largest calendar different
* field is not found ( if user not set it ), interval format fallback to
* the default interval pattern.
* If user does not provide default interval pattern, it fallback to
* "{date0} - {date1}"
*
* @param skeleton the skeleton on which interval format based.
* @param locale the given locale
* @param dtitvinf the DateIntervalInfo object.
* @param status output param set to success/failure code on exit
* @return a date time interval formatter which the caller owns.
* @stable ICU 4.0
* <p>
* <h4>Sample code</h4>
* \snippet samples/dtitvfmtsample/dtitvfmtsample.cpp dtitvfmtPreDefined1
* \snippet samples/dtitvfmtsample/dtitvfmtsample.cpp dtitvfmtCustomized
* <p>
*/
static DateIntervalFormat* U_EXPORT2 createInstance(
const UnicodeString& skeleton,
const Locale& locale,
const DateIntervalInfo& dtitvinf,
UErrorCode& status);
/**
* Destructor.
* @stable ICU 4.0
*/
virtual ~DateIntervalFormat();
/**
* Clone this Format object polymorphically. The caller owns the result and
* should delete it when done.
* @return A copy of the object.
* @stable ICU 4.0
*/
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 4.0
*/
virtual UBool operator==(const Format& other) const;
/**
* Return true if the given Format objects are not 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 not semantically equal.
* @stable ICU 4.0
*/
UBool operator!=(const Format& other) const;
using Format::format;
/**
* Format an object to produce a string. This method handles Formattable
* objects with a DateInterval type.
* If a the Formattable object type is not a DateInterval,
* then it returns a failing UErrorCode.
*
* @param obj The object to format.
* Must be a DateInterval.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param fieldPosition On input: an alignment field, if desired.
* On output: the offsets of the alignment field.
* @param status Output param filled with success/failure status.
* @return Reference to 'appendTo' parameter.
* @stable ICU 4.0
*/
virtual UnicodeString& format(const Formattable& obj,
UnicodeString& appendTo,
FieldPosition& fieldPosition,
UErrorCode& status) const ;
/**
* Format a DateInterval to produce a string.
*
* @param dtInterval DateInterval to be formatted.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param fieldPosition On input: an alignment field, if desired.
* On output: the offsets of the alignment field.
* @param status Output param filled with success/failure status.
* @return Reference to 'appendTo' parameter.
* @stable ICU 4.0
*/
UnicodeString& format(const DateInterval* dtInterval,
UnicodeString& appendTo,
FieldPosition& fieldPosition,
UErrorCode& status) const ;
/**
* Format 2 Calendars to produce a string.
*
* Note: "fromCalendar" and "toCalendar" are not const,
* since calendar is not const in SimpleDateFormat::format(Calendar&),
*
* @param fromCalendar calendar set to the from date in date interval
* to be formatted into date interval string
* @param toCalendar calendar set to the to date in date interval
* to be formatted into date interval string
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param fieldPosition On input: an alignment field, if desired.
* On output: the offsets of the alignment field.
* @param status Output param filled with success/failure status.
* Caller needs to make sure it is SUCCESS
* at the function entrance
* @return Reference to 'appendTo' parameter.
* @stable ICU 4.0
*/
UnicodeString& format(Calendar& fromCalendar,
Calendar& toCalendar,
UnicodeString& appendTo,
FieldPosition& fieldPosition,
UErrorCode& status) const ;
/**
* Date interval parsing is not supported. Please do not use.
* <P>
* This method should handle parsing of
* date time interval strings into Formattable objects with
* DateInterval type, which is a pair of UDate.
* <P>
* Before calling, set parse_pos.index to the offset you want to start
* parsing at in the source. After calling, parse_pos.index is the end of
* the text you parsed. If error occurs, index is unchanged.
* <P>
* When parsing, leading whitespace is discarded (with a successful parse),
* while trailing whitespace is left as is.
* <P>
* See Format::parseObject() for more.
*
* @param source The string to be parsed into an object.
* @param result Formattable to be set to the parse result.
* If parse fails, return contents are undefined.
* @param parse_pos The position to start parsing at. Since no parsing
* is supported, upon return this param is unchanged.
* @return A newly created Formattable* object, or NULL
* on failure. The caller owns this and should
* delete it when done.
* @internal ICU 4.0
*/
virtual void parseObject(const UnicodeString& source,
Formattable& result,
ParsePosition& parse_pos) const;
/**
* Gets the date time interval patterns.
* @return the date time interval patterns associated with
* this date interval formatter.
* @stable ICU 4.0
*/
const DateIntervalInfo* getDateIntervalInfo(void) const;
/**
* Set the date time interval patterns.
* @param newIntervalPatterns the given interval patterns to copy.
* @param status output param set to success/failure code on exit
* @stable ICU 4.0
*/
void setDateIntervalInfo(const DateIntervalInfo& newIntervalPatterns,
UErrorCode& status);
/**
* Gets the date formatter
* @return the date formatter associated with this date interval formatter.
* @stable ICU 4.0
*/
const DateFormat* getDateFormat(void) const;
/**
* Returns a reference to the TimeZone used by this DateIntervalFormat's calendar.
* @return the time zone associated with the calendar of DateIntervalFormat.
* @stable ICU 4.8
*/
virtual const TimeZone& getTimeZone(void) const;
/**
* Sets the time zone for the calendar used by this DateIntervalFormat object. The
* caller no longer owns the TimeZone object and should not delete it after this call.
* @param zoneToAdopt the TimeZone to be adopted.
* @stable ICU 4.8
*/
virtual void adoptTimeZone(TimeZone* zoneToAdopt);
/**
* Sets the time zone for the calendar used by this DateIntervalFormat object.
* @param zone the new time zone.
* @stable ICU 4.8
*/
virtual void setTimeZone(const TimeZone& zone);
/**
* 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 4.0
*/
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 4.0
*/
virtual UClassID getDynamicClassID(void) const;
protected:
/**
* Copy constructor.
* @stable ICU 4.0
*/
DateIntervalFormat(const DateIntervalFormat&);
/**
* Assignment operator.
* @stable ICU 4.0
*/
DateIntervalFormat& operator=(const DateIntervalFormat&);
private:
/*
* This is for ICU internal use only. Please do not use.
* Save the interval pattern information.
* Interval pattern consists of 2 single date patterns and the separator.
* For example, interval pattern "MMM d - MMM d, yyyy" consists
* a single date pattern "MMM d", another single date pattern "MMM d, yyyy",
* and a separator "-".
* The pattern is divided into 2 parts. For above example,
* the first part is "MMM d - ", and the second part is "MMM d, yyyy".
* Also, the first date appears in an interval pattern could be
* the earlier date or the later date.
* And such information is saved in the interval pattern as well.
*/
struct PatternInfo {
UnicodeString firstPart;
UnicodeString secondPart;
/**
* Whether the first date in interval pattern is later date or not.
* Fallback format set the default ordering.
* And for a particular interval pattern, the order can be
* overriden by prefixing the interval pattern with "latestFirst:" or
* "earliestFirst:"
* For example, given 2 date, Jan 10, 2007 to Feb 10, 2007.
* if the fallback format is "{0} - {1}",
* and the pattern is "d MMM - d MMM yyyy", the interval format is
* "10 Jan - 10 Feb, 2007".
* If the pattern is "latestFirst:d MMM - d MMM yyyy",
* the interval format is "10 Feb - 10 Jan, 2007"
*/
UBool laterDateFirst;
};
/**
* default constructor
* @internal ICU 4.0
*/
DateIntervalFormat();
/**
* Construct a DateIntervalFormat from DateFormat,
* a DateIntervalInfo, and skeleton.
* DateFormat provides the timezone, calendar,
* full pattern, and date format symbols information.
* It should be a SimpleDateFormat object which
* has a pattern in it.
* the DateIntervalInfo provides the interval patterns.
*
* Note: the DateIntervalFormat takes ownership of both
* DateFormat and DateIntervalInfo objects.
* Caller should not delete them.
*
* @param locale the locale of this date interval formatter.
* @param dtItvInfo the DateIntervalInfo object to be adopted.
* @param skeleton the skeleton of the date formatter
* @param status output param set to success/failure code on exit
*/
DateIntervalFormat(const Locale& locale, DateIntervalInfo* dtItvInfo,
const UnicodeString* skeleton, UErrorCode& status);
/**
* Construct a DateIntervalFormat from DateFormat
* and a DateIntervalInfo.
*
* It is a wrapper of the constructor.
*
* @param locale the locale of this date interval formatter.
* @param dtitvinf the DateIntervalInfo object to be adopted.
* @param skeleton the skeleton of this formatter.
* @param status Output param set to success/failure code.
* @return a date time interval formatter which the caller owns.
*/
static DateIntervalFormat* U_EXPORT2 create(const Locale& locale,
DateIntervalInfo* dtitvinf,
const UnicodeString* skeleton,
UErrorCode& status);
/**
* Create a simple date/time formatter from skeleton, given locale,
* and date time pattern generator.
*
* @param skeleton the skeleton on which date format based.
* @param locale the given locale.
* @param dtpng the date time pattern generator.
* @param status Output param to be set to success/failure code.
* If it is failure, the returned date formatter will
* be NULL.
* @return a simple date formatter which the caller owns.
*/
static SimpleDateFormat* U_EXPORT2 createSDFPatternInstance(
const UnicodeString& skeleton,
const Locale& locale,
DateTimePatternGenerator* dtpng,
UErrorCode& status);
/**
* Below are for generating interval patterns local to the formatter
*/
/**
* Format 2 Calendars using fall-back interval pattern
*
* The full pattern used in this fall-back format is the
* full pattern of the date formatter.
*
* @param fromCalendar calendar set to the from date in date interval
* to be formatted into date interval string
* @param toCalendar calendar set to the to date in date interval
* to be formatted into date interval string
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param pos On input: an alignment field, if desired.
* On output: the offsets of the alignment field.
* @param status output param set to success/failure code on exit
* @return Reference to 'appendTo' parameter.
*/
UnicodeString& fallbackFormat(Calendar& fromCalendar,
Calendar& toCalendar,
UnicodeString& appendTo,
FieldPosition& pos,
UErrorCode& status) const;
/**
* Initialize interval patterns locale to this formatter
*
* This code is a bit complicated since
* 1. the interval patterns saved in resource bundle files are interval
* patterns based on date or time only.
* It does not have interval patterns based on both date and time.
* Interval patterns on both date and time are algorithm generated.
*
* For example, it has interval patterns on skeleton "dMy" and "hm",
* but it does not have interval patterns on skeleton "dMyhm".
*
* The rule to generate interval patterns for both date and time skeleton are
* 1) when the year, month, or day differs, concatenate the two original
* expressions with a separator between,
* For example, interval pattern from "Jan 10, 2007 10:10 am"
* to "Jan 11, 2007 10:10am" is
* "Jan 10, 2007 10:10 am - Jan 11, 2007 10:10am"
*
* 2) otherwise, present the date followed by the range expression
* for the time.
* For example, interval pattern from "Jan 10, 2007 10:10 am"
* to "Jan 10, 2007 11:10am" is
* "Jan 10, 2007 10:10 am - 11:10am"
*
* 2. even a pattern does not request a certain calendar field,
* the interval pattern needs to include such field if such fields are
* different between 2 dates.
* For example, a pattern/skeleton is "hm", but the interval pattern
* includes year, month, and date when year, month, and date differs.
*
*
* @param status output param set to success/failure code on exit
*/
void initializePattern(UErrorCode& status);
/**
* Set fall back interval pattern given a calendar field,
* a skeleton, and a date time pattern generator.
* @param field the largest different calendar field
* @param skeleton a skeleton
* @param status output param set to success/failure code on exit
*/
void setFallbackPattern(UCalendarDateFields field,
const UnicodeString& skeleton,
UErrorCode& status);
/**
* get separated date and time skeleton from a combined skeleton.
*
* The difference between date skeleton and normalizedDateSkeleton are:
* 1. both 'y' and 'd' are appeared only once in normalizeDateSkeleton
* 2. 'E' and 'EE' are normalized into 'EEE'
* 3. 'MM' is normalized into 'M'
*
** the difference between time skeleton and normalizedTimeSkeleton are:
* 1. both 'H' and 'h' are normalized as 'h' in normalized time skeleton,
* 2. 'a' is omitted in normalized time skeleton.
* 3. there is only one appearance for 'h', 'm','v', 'z' in normalized time
* skeleton
*
*
* @param skeleton given combined skeleton.
* @param date Output parameter for date only skeleton.
* @param normalizedDate Output parameter for normalized date only
*
* @param time Output parameter for time only skeleton.
* @param normalizedTime Output parameter for normalized time only
* skeleton.
*
*/
static void U_EXPORT2 getDateTimeSkeleton(const UnicodeString& skeleton,
UnicodeString& date,
UnicodeString& normalizedDate,
UnicodeString& time,
UnicodeString& normalizedTime);
/**
* Generate date or time interval pattern from resource,
* and set them into the interval pattern locale to this formatter.
*
* It needs to handle the following:
* 1. need to adjust field width.
* For example, the interval patterns saved in DateIntervalInfo
* includes "dMMMy", but not "dMMMMy".
* Need to get interval patterns for dMMMMy from dMMMy.
* Another example, the interval patterns saved in DateIntervalInfo
* includes "hmv", but not "hmz".
* Need to get interval patterns for "hmz' from 'hmv'
*
* 2. there might be no pattern for 'y' differ for skeleton "Md",
* in order to get interval patterns for 'y' differ,
* need to look for it from skeleton 'yMd'
*
* @param dateSkeleton normalized date skeleton
* @param timeSkeleton normalized time skeleton
* @return whether the resource is found for the skeleton.
* TRUE if interval pattern found for the skeleton,
* FALSE otherwise.
*/
UBool setSeparateDateTimePtn(const UnicodeString& dateSkeleton,
const UnicodeString& timeSkeleton);
/**
* Generate interval pattern from existing resource
*
* It not only save the interval patterns,
* but also return the extended skeleton and its best match skeleton.
*
* @param field largest different calendar field
* @param skeleton skeleton
* @param bestSkeleton the best match skeleton which has interval pattern
* defined in resource
* @param differenceInfo the difference between skeleton and best skeleton
* 0 means the best matched skeleton is the same as input skeleton
* 1 means the fields are the same, but field width are different
* 2 means the only difference between fields are v/z,
* -1 means there are other fields difference
*
* @param extendedSkeleton extended skeleton
* @param extendedBestSkeleton extended best match skeleton
* @return whether the interval pattern is found
* through extending skeleton or not.
* TRUE if interval pattern is found by
* extending skeleton, FALSE otherwise.
*/
UBool setIntervalPattern(UCalendarDateFields field,
const UnicodeString* skeleton,
const UnicodeString* bestSkeleton,
int8_t differenceInfo,
UnicodeString* extendedSkeleton = NULL,
UnicodeString* extendedBestSkeleton = NULL);
/**
* Adjust field width in best match interval pattern to match
* the field width in input skeleton.
*
* TODO (xji) make a general solution
* The adjusting rule can be:
* 1. always adjust
* 2. never adjust
* 3. default adjust, which means adjust according to the following rules
* 3.1 always adjust string, such as MMM and MMMM
* 3.2 never adjust between string and numeric, such as MM and MMM
* 3.3 always adjust year
* 3.4 do not adjust 'd', 'h', or 'm' if h presents
* 3.5 do not adjust 'M' if it is numeric(?)
*
* Since date interval format is well-formed format,
* date and time skeletons are normalized previously,
* till this stage, the adjust here is only "adjust strings, such as MMM
* and MMMM, EEE and EEEE.
*
* @param inputSkeleton the input skeleton
* @param bestMatchSkeleton the best match skeleton
* @param bestMatchIntervalPattern the best match interval pattern
* @param differenceInfo the difference between 2 skeletons
* 1 means only field width differs
* 2 means v/z exchange
* @param adjustedIntervalPattern adjusted interval pattern
*/
static void U_EXPORT2 adjustFieldWidth(
const UnicodeString& inputSkeleton,
const UnicodeString& bestMatchSkeleton,
const UnicodeString& bestMatchIntervalPattern,
int8_t differenceInfo,
UnicodeString& adjustedIntervalPattern);
/**
* Concat a single date pattern with a time interval pattern,
* set it into the intervalPatterns, while field is time field.
* This is used to handle time interval patterns on skeleton with
* both time and date. Present the date followed by
* the range expression for the time.
* @param format date and time format
* @param formatLen format string length
* @param datePattern date pattern
* @param field time calendar field: AM_PM, HOUR, MINUTE
* @param status output param set to success/failure code on exit
*/
void concatSingleDate2TimeInterval(const UChar* format,
int32_t formatLen,
const UnicodeString& datePattern,
UCalendarDateFields field,
UErrorCode& status);
/**
* check whether a calendar field present in a skeleton.
* @param field calendar field need to check
* @param skeleton given skeleton on which to check the calendar field
* @return true if field present in a skeleton.
*/
static UBool U_EXPORT2 fieldExistsInSkeleton(UCalendarDateFields field,
const UnicodeString& skeleton);
/**
* Split interval patterns into 2 part.
* @param intervalPattern interval pattern
* @return the index in interval pattern which split the pattern into 2 part
*/
static int32_t U_EXPORT2 splitPatternInto2Part(const UnicodeString& intervalPattern);
/**
* Break interval patterns as 2 part and save them into pattern info.
* @param field calendar field
* @param intervalPattern interval pattern
*/
void setIntervalPattern(UCalendarDateFields field,
const UnicodeString& intervalPattern);
/**
* Break interval patterns as 2 part and save them into pattern info.
* @param field calendar field
* @param intervalPattern interval pattern
* @param laterDateFirst whether later date appear first in interval pattern
*/
void setIntervalPattern(UCalendarDateFields field,
const UnicodeString& intervalPattern,
UBool laterDateFirst);
/**
* Set pattern information.
*
* @param field calendar field
* @param firstPart the first part in interval pattern
* @param secondPart the second part in interval pattern
* @param laterDateFirst whether the first date in intervalPattern
* is earlier date or later date
*/
void setPatternInfo(UCalendarDateFields field,
const UnicodeString* firstPart,
const UnicodeString* secondPart,
UBool laterDateFirst);
// from calendar field to pattern letter
static const UChar fgCalendarFieldToPatternLetter[];
/**
* The interval patterns for this locale.
*/
DateIntervalInfo* fInfo;
/**
* The DateFormat object used to format single pattern
*/
SimpleDateFormat* fDateFormat;
/**
* The 2 calendars with the from and to date.
* could re-use the calendar in fDateFormat,
* but keeping 2 calendars make it clear and clean.
*/
Calendar* fFromCalendar;
Calendar* fToCalendar;
/**
* Date time pattern generator
*/
DateTimePatternGenerator* fDtpng;
/**
* Following are interval information relavent (locale) to this formatter.
*/
UnicodeString fSkeleton;
PatternInfo fIntervalPatterns[DateIntervalInfo::kIPI_MAX_INDEX];
};
inline UBool
DateIntervalFormat::operator!=(const Format& other) const {
return !operator==(other);
}
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
#endif // _DTITVFMT_H__
//eof
|