The Tor Browser: intl/icu/source/i18n/smpdtfmt.cpp@6474c204b198 (annotated)

intl/icu/source/i18n/smpdtfmt.cpp@6474c204b198 (annotated)

intl/icu/source/i18n/smpdtfmt.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
 *******************************************************************************
 * Copyright (C) 1997-2013, International Business Machines Corporation and    *
 * others. All Rights Reserved.                                                *
 *******************************************************************************
 *
 * File SMPDTFMT.CPP
 *
 * Modification History:
 *
 *   Date        Name        Description
 *   02/19/97    aliu        Converted from java.
 *   03/31/97    aliu        Modified extensively to work with 50 locales.
 *   04/01/97    aliu        Added support for centuries.
 *   07/09/97    helena      Made ParsePosition into a class.
 *   07/21/98    stephen     Added initializeDefaultCentury.
 *                             Removed getZoneIndex (added in DateFormatSymbols)
 *                             Removed subParseLong
 *                             Removed chk
 *  02/22/99     stephen     Removed character literals for EBCDIC safety
 *   10/14/99    aliu        Updated 2-digit year parsing so that only "00" thru
 *                           "99" are recognized. {j28 4182066}
 *   11/15/99    weiv        Added support for week of year/day of week format
 ********************************************************************************
 */
 #define ZID_KEY_MAX 128
 #include "unicode/utypes.h"
 #if !UCONFIG_NO_FORMATTING
 #include "unicode/smpdtfmt.h"
 #include "unicode/dtfmtsym.h"
 #include "unicode/ures.h"
 #include "unicode/msgfmt.h"
 #include "unicode/calendar.h"
 #include "unicode/gregocal.h"
 #include "unicode/timezone.h"
 #include "unicode/decimfmt.h"
 #include "unicode/dcfmtsym.h"
 #include "unicode/uchar.h"
 #include "unicode/uniset.h"
 #include "unicode/ustring.h"
 #include "unicode/basictz.h"
 #include "unicode/simpletz.h"
 #include "unicode/rbtz.h"
 #include "unicode/tzfmt.h"
 #include "unicode/utf16.h"
 #include "unicode/vtzone.h"
 #include "unicode/udisplaycontext.h"
 #include "olsontz.h"
 #include "patternprops.h"
 #include "fphdlimp.h"
 #include "gregoimp.h"
 #include "hebrwcal.h"
 #include "cstring.h"
 #include "uassert.h"
 #include "cmemory.h"
 #include "umutex.h"
 #include <float.h>
 #include "smpdtfst.h"
 #if defined( U_DEBUG_CALSVC ) || defined (U_DEBUG_CAL)
 #include <stdio.h>
 #endif
 // *****************************************************************************
 // class SimpleDateFormat
 // *****************************************************************************
 U_NAMESPACE_BEGIN
 static const UChar PATTERN_CHAR_BASE = 0x40;
 /**
  * Last-resort string to use for "GMT" when constructing time zone strings.
  */
 // For time zones that have no names, use strings GMT+minutes and
 // GMT-minutes. For instance, in France the time zone is GMT+60.
 // Also accepted are GMT+H:MM or GMT-H:MM.
 // Currently not being used
 //static const UChar gGmt[]      = {0x0047, 0x004D, 0x0054, 0x0000};         // "GMT"
 //static const UChar gGmtPlus[]  = {0x0047, 0x004D, 0x0054, 0x002B, 0x0000}; // "GMT+"
 //static const UChar gGmtMinus[] = {0x0047, 0x004D, 0x0054, 0x002D, 0x0000}; // "GMT-"
 //static const UChar gDefGmtPat[]       = {0x0047, 0x004D, 0x0054, 0x007B, 0x0030, 0x007D, 0x0000}; /* GMT{0} */
 //static const UChar gDefGmtNegHmsPat[] = {0x002D, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x003A, 0x0073, 0x0073, 0x0000}; /* -HH:mm:ss */
 //static const UChar gDefGmtNegHmPat[]  = {0x002D, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x0000}; /* -HH:mm */
 //static const UChar gDefGmtPosHmsPat[] = {0x002B, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x003A, 0x0073, 0x0073, 0x0000}; /* +HH:mm:ss */
 //static const UChar gDefGmtPosHmPat[]  = {0x002B, 0x0048, 0x0048, 0x003A, 0x006D, 0x006D, 0x0000}; /* +HH:mm */
 //static const UChar gUt[]       = {0x0055, 0x0054, 0x0000};  // "UT"
 //static const UChar gUtc[]      = {0x0055, 0x0054, 0x0043, 0x0000};  // "UT"
 typedef enum GmtPatSize {
     kGmtLen = 3,
     kGmtPatLen = 6,
     kNegHmsLen = 9,
     kNegHmLen = 6,
     kPosHmsLen = 9,
     kPosHmLen = 6,
     kUtLen = 2,
     kUtcLen = 3
 } GmtPatSize;
 // Stuff needed for numbering system overrides
 typedef enum OvrStrType {
     kOvrStrDate = 0,
     kOvrStrTime = 1,
     kOvrStrBoth = 2
 } OvrStrType;
 static const UDateFormatField kDateFields[] = {
     UDAT_YEAR_FIELD,
     UDAT_MONTH_FIELD,
     UDAT_DATE_FIELD,
     UDAT_DAY_OF_YEAR_FIELD,
     UDAT_DAY_OF_WEEK_IN_MONTH_FIELD,
     UDAT_WEEK_OF_YEAR_FIELD,
     UDAT_WEEK_OF_MONTH_FIELD,
     UDAT_YEAR_WOY_FIELD,
     UDAT_EXTENDED_YEAR_FIELD,
     UDAT_JULIAN_DAY_FIELD,
     UDAT_STANDALONE_DAY_FIELD,
     UDAT_STANDALONE_MONTH_FIELD,
     UDAT_QUARTER_FIELD,
     UDAT_STANDALONE_QUARTER_FIELD,
     UDAT_YEAR_NAME_FIELD };
 static const int8_t kDateFieldsCount = 15;
 static const UDateFormatField kTimeFields[] = {
     UDAT_HOUR_OF_DAY1_FIELD,
     UDAT_HOUR_OF_DAY0_FIELD,
     UDAT_MINUTE_FIELD,
     UDAT_SECOND_FIELD,
     UDAT_FRACTIONAL_SECOND_FIELD,
     UDAT_HOUR1_FIELD,
     UDAT_HOUR0_FIELD,
     UDAT_MILLISECONDS_IN_DAY_FIELD,
     UDAT_TIMEZONE_RFC_FIELD,
     UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD };
 static const int8_t kTimeFieldsCount = 10;
 // This is a pattern-of-last-resort used when we can't load a usable pattern out
 // of a resource.
 static const UChar gDefaultPattern[] =
 {
 x79, 0x79, 0x79, 0x79, 0x4D, 0x4D, 0x64, 0x64, 0x20, 0x68, 0x68, 0x3A, 0x6D, 0x6D, 0x20, 0x61, 0
 };  /* "yyyyMMdd hh:mm a" */
 // This prefix is designed to NEVER MATCH real text, in order to
 // suppress the parsing of negative numbers.  Adjust as needed (if
 // this becomes valid Unicode).
 static const UChar SUPPRESS_NEGATIVE_PREFIX[] = {0xAB00, 0};
 /**
  * These are the tags we expect to see in normal resource bundle files associated
  * with a locale.
  */
 static const char gDateTimePatternsTag[]="DateTimePatterns";
 //static const UChar gEtcUTC[] = {0x45, 0x74, 0x63, 0x2F, 0x55, 0x54, 0x43, 0x00}; // "Etc/UTC"
 static const UChar QUOTE = 0x27; // Single quote
 /*
  * The field range check bias for each UDateFormatField.
  * The bias is added to the minimum and maximum values
  * before they are compared to the parsed number.
  * For example, the calendar stores zero-based month numbers
  * but the parsed month numbers start at 1, so the bias is 1.
  *
  * A value of -1 means that the value is not checked.
  */
 static const int32_t gFieldRangeBias[] = {
     -1,  // 'G' - UDAT_ERA_FIELD
     -1,  // 'y' - UDAT_YEAR_FIELD
 ,  // 'M' - UDAT_MONTH_FIELD
 ,  // 'd' - UDAT_DATE_FIELD
     -1,  // 'k' - UDAT_HOUR_OF_DAY1_FIELD
     -1,  // 'H' - UDAT_HOUR_OF_DAY0_FIELD
 ,  // 'm' - UDAT_MINUTE_FIELD
 ,  // 's' - UDAT_SEOND_FIELD
     -1,  // 'S' - UDAT_FRACTIONAL_SECOND_FIELD (0-999?)
     -1,  // 'E' - UDAT_DAY_OF_WEEK_FIELD (1-7?)
     -1,  // 'D' - UDAT_DAY_OF_YEAR_FIELD (1 - 366?)
     -1,  // 'F' - UDAT_DAY_OF_WEEK_IN_MONTH_FIELD (1-5?)
     -1,  // 'w' - UDAT_WEEK_OF_YEAR_FIELD (1-52?)
     -1,  // 'W' - UDAT_WEEK_OF_MONTH_FIELD (1-5?)
     -1,  // 'a' - UDAT_AM_PM_FIELD
     -1,  // 'h' - UDAT_HOUR1_FIELD
     -1,  // 'K' - UDAT_HOUR0_FIELD
     -1,  // 'z' - UDAT_TIMEZONE_FIELD
     -1,  // 'Y' - UDAT_YEAR_WOY_FIELD
     -1,  // 'e' - UDAT_DOW_LOCAL_FIELD
     -1,  // 'u' - UDAT_EXTENDED_YEAR_FIELD
     -1,  // 'g' - UDAT_JULIAN_DAY_FIELD
     -1,  // 'A' - UDAT_MILLISECONDS_IN_DAY_FIELD
     -1,  // 'Z' - UDAT_TIMEZONE_RFC_FIELD
     -1,  // 'v' - UDAT_TIMEZONE_GENERIC_FIELD
 ,  // 'c' - UDAT_STANDALONE_DAY_FIELD
 ,  // 'L' - UDAT_STANDALONE_MONTH_FIELD
     -1,  // 'Q' - UDAT_QUARTER_FIELD (1-4?)
     -1,  // 'q' - UDAT_STANDALONE_QUARTER_FIELD
     -1   // 'V' - UDAT_TIMEZONE_SPECIAL_FIELD
     -1,  // 'U' - UDAT_YEAR_NAME_FIELD
     -1,  // 'O' - UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD
     -1,  // 'X' - UDAT_TIMEZONE_ISO_FIELD
     -1,  // 'x' - UDAT_TIMEZONE_ISO_LOCAL_FIELD
 };
 // When calendar uses hebr numbering (i.e. he@calendar=hebrew),
 // offset the years within the current millenium down to 1-999
 static const int32_t HEBREW_CAL_CUR_MILLENIUM_START_YEAR = 5000;
 static const int32_t HEBREW_CAL_CUR_MILLENIUM_END_YEAR = 6000;
 static UMutex LOCK = U_MUTEX_INITIALIZER;
 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SimpleDateFormat)
 //----------------------------------------------------------------------
 SimpleDateFormat::~SimpleDateFormat()
 {
     delete fSymbols;
     if (fNumberFormatters) {
         uprv_free(fNumberFormatters);
     }
     if (fTimeZoneFormat) {
         delete fTimeZoneFormat;
     }
     while (fOverrideList) {
         NSOverride *cur = fOverrideList;
         fOverrideList = cur->next;
         delete cur->nf;
         uprv_free(cur);
     }
 }
 //----------------------------------------------------------------------
 SimpleDateFormat::SimpleDateFormat(UErrorCode& status)
   :   fLocale(Locale::getDefault()),
       fSymbols(NULL),
       fTimeZoneFormat(NULL),
       fNumberFormatters(NULL),
       fOverrideList(NULL),
       fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     construct(kShort, (EStyle) (kShort + kDateOffset), fLocale, status);
     initializeDefaultCentury();
 }
 //----------------------------------------------------------------------
 SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
                                    UErrorCode &status)
 :   fPattern(pattern),
     fLocale(Locale::getDefault()),
     fSymbols(NULL),
     fTimeZoneFormat(NULL),
     fNumberFormatters(NULL),
     fOverrideList(NULL),
     fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     initializeSymbols(fLocale, initializeCalendar(NULL,fLocale,status), status);
     initialize(fLocale, status);
     initializeDefaultCentury();
 }
 //----------------------------------------------------------------------
 SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
                                    const UnicodeString& override,
                                    UErrorCode &status)
 :   fPattern(pattern),
     fLocale(Locale::getDefault()),
     fSymbols(NULL),
     fTimeZoneFormat(NULL),
     fNumberFormatters(NULL),
     fOverrideList(NULL),
     fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     fDateOverride.setTo(override);
     fTimeOverride.setToBogus();
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     initializeSymbols(fLocale, initializeCalendar(NULL,fLocale,status), status);
     initialize(fLocale, status);
     initializeDefaultCentury();
     processOverrideString(fLocale,override,kOvrStrBoth,status);
 }
 //----------------------------------------------------------------------
 SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
                                    const Locale& locale,
                                    UErrorCode& status)
 :   fPattern(pattern),
     fLocale(locale),
     fTimeZoneFormat(NULL),
     fNumberFormatters(NULL),
     fOverrideList(NULL),
     fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     initializeSymbols(fLocale, initializeCalendar(NULL,fLocale,status), status);
     initialize(fLocale, status);
     initializeDefaultCentury();
 }
 //----------------------------------------------------------------------
 SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
                                    const UnicodeString& override,
                                    const Locale& locale,
                                    UErrorCode& status)
 :   fPattern(pattern),
     fLocale(locale),
     fTimeZoneFormat(NULL),
     fNumberFormatters(NULL),
     fOverrideList(NULL),
     fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     fDateOverride.setTo(override);
     fTimeOverride.setToBogus();
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     initializeSymbols(fLocale, initializeCalendar(NULL,fLocale,status), status);
     initialize(fLocale, status);
     initializeDefaultCentury();
     processOverrideString(locale,override,kOvrStrBoth,status);
 }
 //----------------------------------------------------------------------
 SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
                                    DateFormatSymbols* symbolsToAdopt,
                                    UErrorCode& status)
 :   fPattern(pattern),
     fLocale(Locale::getDefault()),
     fSymbols(symbolsToAdopt),
     fTimeZoneFormat(NULL),
     fNumberFormatters(NULL),
     fOverrideList(NULL),
     fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     initializeCalendar(NULL,fLocale,status);
     initialize(fLocale, status);
     initializeDefaultCentury();
 }
 //----------------------------------------------------------------------
 SimpleDateFormat::SimpleDateFormat(const UnicodeString& pattern,
                                    const DateFormatSymbols& symbols,
                                    UErrorCode& status)
 :   fPattern(pattern),
     fLocale(Locale::getDefault()),
     fSymbols(new DateFormatSymbols(symbols)),
     fTimeZoneFormat(NULL),
     fNumberFormatters(NULL),
     fOverrideList(NULL),
     fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     initializeCalendar(NULL, fLocale, status);
     initialize(fLocale, status);
     initializeDefaultCentury();
 }
 //----------------------------------------------------------------------
 // Not for public consumption; used by DateFormat
 SimpleDateFormat::SimpleDateFormat(EStyle timeStyle,
                                    EStyle dateStyle,
                                    const Locale& locale,
                                    UErrorCode& status)
 :   fLocale(locale),
     fSymbols(NULL),
     fTimeZoneFormat(NULL),
     fNumberFormatters(NULL),
     fOverrideList(NULL),
     fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     construct(timeStyle, dateStyle, fLocale, status);
     if(U_SUCCESS(status)) {
       initializeDefaultCentury();
     }
 }
 //----------------------------------------------------------------------
 /**
  * Not for public consumption; used by DateFormat.  This constructor
  * never fails.  If the resource data is not available, it uses the
  * the last resort symbols.
  */
 SimpleDateFormat::SimpleDateFormat(const Locale& locale,
                                    UErrorCode& status)
 :   fPattern(gDefaultPattern),
     fLocale(locale),
     fSymbols(NULL),
     fTimeZoneFormat(NULL),
     fNumberFormatters(NULL),
     fOverrideList(NULL),
     fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     if (U_FAILURE(status)) return;
     initializeSymbols(fLocale, initializeCalendar(NULL, fLocale, status),status);
     if (U_FAILURE(status))
     {
         status = U_ZERO_ERROR;
         delete fSymbols;
         // This constructor doesn't fail; it uses last resort data
         fSymbols = new DateFormatSymbols(status);
         /* test for NULL */
         if (fSymbols == 0) {
             status = U_MEMORY_ALLOCATION_ERROR;
             return;
         }
     }
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     initialize(fLocale, status);
     if(U_SUCCESS(status)) {
       initializeDefaultCentury();
     }
 }
 //----------------------------------------------------------------------
 SimpleDateFormat::SimpleDateFormat(const SimpleDateFormat& other)
 :   DateFormat(other),
     fLocale(other.fLocale),
     fSymbols(NULL),
     fTimeZoneFormat(NULL),
     fNumberFormatters(NULL),
     fOverrideList(NULL),
     fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
 {
     UErrorCode status = U_ZERO_ERROR;
     setBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, true, status).setBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, true, status);
     *this = other;
 }
 //----------------------------------------------------------------------
 SimpleDateFormat& SimpleDateFormat::operator=(const SimpleDateFormat& other)
 {
     if (this == &other) {
         return *this;
     }
     DateFormat::operator=(other);
     delete fSymbols;
     fSymbols = NULL;
     if (other.fSymbols)
         fSymbols = new DateFormatSymbols(*other.fSymbols);
     fDefaultCenturyStart         = other.fDefaultCenturyStart;
     fDefaultCenturyStartYear     = other.fDefaultCenturyStartYear;
     fHaveDefaultCentury          = other.fHaveDefaultCentury;
     fPattern = other.fPattern;
     // TimeZoneFormat in ICU4C only depends on a locale for now
     if (fLocale != other.fLocale) {
         delete fTimeZoneFormat;
         fTimeZoneFormat = NULL; // forces lazy instantiation with the other locale
         fLocale = other.fLocale;
     }
     fCapitalizationContext = other.fCapitalizationContext;
     return *this;
 }
 //----------------------------------------------------------------------
 Format*
 SimpleDateFormat::clone() const
 {
     return new SimpleDateFormat(*this);
 }
 //----------------------------------------------------------------------
 UBool
 SimpleDateFormat::operator==(const Format& other) const
 {
     if (DateFormat::operator==(other)) {
         // DateFormat::operator== guarantees following cast is safe
         SimpleDateFormat* that = (SimpleDateFormat*)&other;
         return (fPattern             == that->fPattern &&
                 fSymbols             != NULL && // Check for pathological object
                 that->fSymbols       != NULL && // Check for pathological object
                 *fSymbols            == *that->fSymbols &&
                 fHaveDefaultCentury  == that->fHaveDefaultCentury &&
                 fDefaultCenturyStart == that->fDefaultCenturyStart &&
                 fCapitalizationContext == that->fCapitalizationContext);
     }
     return FALSE;
 }
 //----------------------------------------------------------------------
 void SimpleDateFormat::construct(EStyle timeStyle,
                                  EStyle dateStyle,
                                  const Locale& locale,
                                  UErrorCode& status)
 {
     // called by several constructors to load pattern data from the resources
     if (U_FAILURE(status)) return;
     // We will need the calendar to know what type of symbols to load.
     initializeCalendar(NULL, locale, status);
     if (U_FAILURE(status)) return;
     CalendarData calData(locale, fCalendar?fCalendar->getType():NULL, status);
     UResourceBundle *dateTimePatterns = calData.getByKey(gDateTimePatternsTag, status);
     UResourceBundle *currentBundle;
     if (U_FAILURE(status)) return;
     if (ures_getSize(dateTimePatterns) <= kDateTime)
     {
         status = U_INVALID_FORMAT_ERROR;
         return;
     }
     setLocaleIDs(ures_getLocaleByType(dateTimePatterns, ULOC_VALID_LOCALE, &status),
                  ures_getLocaleByType(dateTimePatterns, ULOC_ACTUAL_LOCALE, &status));
     // create a symbols object from the locale
     initializeSymbols(locale,fCalendar, status);
     if (U_FAILURE(status)) return;
     /* test for NULL */
     if (fSymbols == 0) {
         status = U_MEMORY_ALLOCATION_ERROR;
         return;
     }
     const UChar *resStr,*ovrStr;
     int32_t resStrLen,ovrStrLen = 0;
     fDateOverride.setToBogus();
     fTimeOverride.setToBogus();
     // if the pattern should include both date and time information, use the date/time
     // pattern string as a guide to tell use how to glue together the appropriate date
     // and time pattern strings.  The actual gluing-together is handled by a convenience
     // method on MessageFormat.
     if ((timeStyle != kNone) && (dateStyle != kNone))
     {
         Formattable timeDateArray[2];
         // use Formattable::adoptString() so that we can use fastCopyFrom()
         // instead of Formattable::setString()'s unaware, safe, deep string clone
         // see Jitterbug 2296
         currentBundle = ures_getByIndex(dateTimePatterns, (int32_t)timeStyle, NULL, &status);
         if (U_FAILURE(status)) {
            status = U_INVALID_FORMAT_ERROR;
            return;
         }
         switch (ures_getType(currentBundle)) {
             case URES_STRING: {
                resStr = ures_getString(currentBundle, &resStrLen, &status);
                break;
             }
             case URES_ARRAY: {
                resStr = ures_getStringByIndex(currentBundle, 0, &resStrLen, &status);
                ovrStr = ures_getStringByIndex(currentBundle, 1, &ovrStrLen, &status);
                fTimeOverride.setTo(TRUE, ovrStr, ovrStrLen);
                break;
             }
             default: {
                status = U_INVALID_FORMAT_ERROR;
                ures_close(currentBundle);
                return;
             }
         }
         ures_close(currentBundle);
         UnicodeString *tempus1 = new UnicodeString(TRUE, resStr, resStrLen);
         // NULL pointer check
         if (tempus1 == NULL) {
             status = U_MEMORY_ALLOCATION_ERROR;
             return;
         }
         timeDateArray[0].adoptString(tempus1);
         currentBundle = ures_getByIndex(dateTimePatterns, (int32_t)dateStyle, NULL, &status);
         if (U_FAILURE(status)) {
            status = U_INVALID_FORMAT_ERROR;
            return;
         }
         switch (ures_getType(currentBundle)) {
             case URES_STRING: {
                resStr = ures_getString(currentBundle, &resStrLen, &status);
                break;
             }
             case URES_ARRAY: {
                resStr = ures_getStringByIndex(currentBundle, 0, &resStrLen, &status);
                ovrStr = ures_getStringByIndex(currentBundle, 1, &ovrStrLen, &status);
                fDateOverride.setTo(TRUE, ovrStr, ovrStrLen);
                break;
             }
             default: {
                status = U_INVALID_FORMAT_ERROR;
                ures_close(currentBundle);
                return;
             }
         }
         ures_close(currentBundle);
         UnicodeString *tempus2 = new UnicodeString(TRUE, resStr, resStrLen);
         // Null pointer check
         if (tempus2 == NULL) {
             status = U_MEMORY_ALLOCATION_ERROR;
             return;
         }
         timeDateArray[1].adoptString(tempus2);
         int32_t glueIndex = kDateTime;
         int32_t patternsSize = ures_getSize(dateTimePatterns);
         if (patternsSize >= (kDateTimeOffset + kShort + 1)) {
             // Get proper date time format
             glueIndex = (int32_t)(kDateTimeOffset + (dateStyle - kDateOffset));
         }
         resStr = ures_getStringByIndex(dateTimePatterns, glueIndex, &resStrLen, &status);
         MessageFormat::format(UnicodeString(TRUE, resStr, resStrLen), timeDateArray, 2, fPattern, status);
     }
     // if the pattern includes just time data or just date date, load the appropriate
     // pattern string from the resources
     // setTo() - see DateFormatSymbols::assignArray comments
     else if (timeStyle != kNone) {
         currentBundle = ures_getByIndex(dateTimePatterns, (int32_t)timeStyle, NULL, &status);
         if (U_FAILURE(status)) {
            status = U_INVALID_FORMAT_ERROR;
            return;
         }
         switch (ures_getType(currentBundle)) {
             case URES_STRING: {
                resStr = ures_getString(currentBundle, &resStrLen, &status);
                break;
             }
             case URES_ARRAY: {
                resStr = ures_getStringByIndex(currentBundle, 0, &resStrLen, &status);
                ovrStr = ures_getStringByIndex(currentBundle, 1, &ovrStrLen, &status);
                fDateOverride.setTo(TRUE, ovrStr, ovrStrLen);
                break;
             }
             default: {
                status = U_INVALID_FORMAT_ERROR;
                 ures_close(currentBundle);
                return;
             }
         }
         fPattern.setTo(TRUE, resStr, resStrLen);
         ures_close(currentBundle);
     }
     else if (dateStyle != kNone) {
         currentBundle = ures_getByIndex(dateTimePatterns, (int32_t)dateStyle, NULL, &status);
         if (U_FAILURE(status)) {
            status = U_INVALID_FORMAT_ERROR;
            return;
         }
         switch (ures_getType(currentBundle)) {
             case URES_STRING: {
                resStr = ures_getString(currentBundle, &resStrLen, &status);
                break;
             }
             case URES_ARRAY: {
                resStr = ures_getStringByIndex(currentBundle, 0, &resStrLen, &status);
                ovrStr = ures_getStringByIndex(currentBundle, 1, &ovrStrLen, &status);
                fDateOverride.setTo(TRUE, ovrStr, ovrStrLen);
                break;
             }
             default: {
                status = U_INVALID_FORMAT_ERROR;
                ures_close(currentBundle);
                return;
             }
         }
         fPattern.setTo(TRUE, resStr, resStrLen);
         ures_close(currentBundle);
     }
     // and if it includes _neither_, that's an error
     else
         status = U_INVALID_FORMAT_ERROR;
     // finally, finish initializing by creating a Calendar and a NumberFormat
     initialize(locale, status);
 }
 //----------------------------------------------------------------------
 Calendar*
 SimpleDateFormat::initializeCalendar(TimeZone* adoptZone, const Locale& locale, UErrorCode& status)
 {
     if(!U_FAILURE(status)) {
         fCalendar = Calendar::createInstance(adoptZone?adoptZone:TimeZone::createDefault(), locale, status);
     }
     if (U_SUCCESS(status) && fCalendar == NULL) {
         status = U_MEMORY_ALLOCATION_ERROR;
     }
     return fCalendar;
 }
 void
 SimpleDateFormat::initializeSymbols(const Locale& locale, Calendar* calendar, UErrorCode& status)
 {
   if(U_FAILURE(status)) {
     fSymbols = NULL;
   } else {
     // pass in calendar type - use NULL (default) if no calendar set (or err).
     fSymbols = new DateFormatSymbols(locale, calendar?calendar->getType() :NULL , status);
     // Null pointer check
     if (fSymbols == NULL) {
         status = U_MEMORY_ALLOCATION_ERROR;
         return;
     }
   }
 }
 void
 SimpleDateFormat::initialize(const Locale& locale,
                              UErrorCode& status)
 {
     if (U_FAILURE(status)) return;
     // We don't need to check that the row count is >= 1, since all 2d arrays have at
     // least one row
     fNumberFormat = NumberFormat::createInstance(locale, status);
     if (fNumberFormat != NULL && U_SUCCESS(status))
     {
         // no matter what the locale's default number format looked like, we want
         // to modify it so that it doesn't use thousands separators, doesn't always
         // show the decimal point, and recognizes integers only when parsing
         fNumberFormat->setGroupingUsed(FALSE);
         DecimalFormat* decfmt = dynamic_cast<DecimalFormat*>(fNumberFormat);
         if (decfmt != NULL) {
             decfmt->setDecimalSeparatorAlwaysShown(FALSE);
         }
         fNumberFormat->setParseIntegerOnly(TRUE);
         fNumberFormat->setMinimumFractionDigits(0); // To prevent "Jan 1.00, 1997.00"
         //fNumberFormat->setLenient(TRUE); // Java uses a custom DateNumberFormat to format/parse
         initNumberFormatters(locale,status);
     }
     else if (U_SUCCESS(status))
     {
         status = U_MISSING_RESOURCE_ERROR;
     }
 }
 /* Initialize the fields we use to disambiguate ambiguous years. Separate
  * so we can call it from readObject().
  */
 void SimpleDateFormat::initializeDefaultCentury()
 {
   if(fCalendar) {
     fHaveDefaultCentury = fCalendar->haveDefaultCentury();
     if(fHaveDefaultCentury) {
       fDefaultCenturyStart = fCalendar->defaultCenturyStart();
       fDefaultCenturyStartYear = fCalendar->defaultCenturyStartYear();
     } else {
       fDefaultCenturyStart = DBL_MIN;
       fDefaultCenturyStartYear = -1;
     }
   }
 }
 /* Define one-century window into which to disambiguate dates using
  * two-digit years. Make public in JDK 1.2.
  */
 void SimpleDateFormat::parseAmbiguousDatesAsAfter(UDate startDate, UErrorCode& status)
 {
     if(U_FAILURE(status)) {
         return;
     }
     if(!fCalendar) {
       status = U_ILLEGAL_ARGUMENT_ERROR;
       return;
     }
     fCalendar->setTime(startDate, status);
     if(U_SUCCESS(status)) {
         fHaveDefaultCentury = TRUE;
         fDefaultCenturyStart = startDate;
         fDefaultCenturyStartYear = fCalendar->get(UCAL_YEAR, status);
     }
 }
 //----------------------------------------------------------------------
 UnicodeString&
 SimpleDateFormat::format(Calendar& cal, UnicodeString& appendTo, FieldPosition& pos) const
 {
   UErrorCode status = U_ZERO_ERROR;
   FieldPositionOnlyHandler handler(pos);
   return _format(cal, appendTo, handler, status);
 }
 //----------------------------------------------------------------------
 UnicodeString&
 SimpleDateFormat::format(Calendar& cal, UnicodeString& appendTo,
                          FieldPositionIterator* posIter, UErrorCode& status) const
 {
   FieldPositionIteratorHandler handler(posIter, status);
   return _format(cal, appendTo, handler, status);
 }
 //----------------------------------------------------------------------
 UnicodeString&
 SimpleDateFormat::_format(Calendar& cal, UnicodeString& appendTo,
                             FieldPositionHandler& handler, UErrorCode& status) const
 {
     if ( U_FAILURE(status) ) {
        return appendTo;
     }
     Calendar* workCal = &cal;
     Calendar* calClone = NULL;
     if (&cal != fCalendar && uprv_strcmp(cal.getType(), fCalendar->getType()) != 0) {
         // Different calendar type
         // We use the time and time zone from the input calendar, but
         // do not use the input calendar for field calculation.
         calClone = fCalendar->clone();
         if (calClone != NULL) {
             UDate t = cal.getTime(status);
             calClone->setTime(t, status);
             calClone->setTimeZone(cal.getTimeZone());
             workCal = calClone;
         } else {
             status = U_MEMORY_ALLOCATION_ERROR;
             return appendTo;
         }
     }
     UBool inQuote = FALSE;
     UChar prevCh = 0;
     int32_t count = 0;
     int32_t fieldNum = 0;
     // loop through the pattern string character by character
     for (int32_t i = 0; i < fPattern.length() && U_SUCCESS(status); ++i) {
         UChar ch = fPattern[i];
         // Use subFormat() to format a repeated pattern character
         // when a different pattern or non-pattern character is seen
         if (ch != prevCh && count > 0) {
             subFormat(appendTo, prevCh, count, fCapitalizationContext, fieldNum++, handler, *workCal, status);
             count = 0;
         }
         if (ch == QUOTE) {
             // Consecutive single quotes are a single quote literal,
             // either outside of quotes or between quotes
             if ((i+1) < fPattern.length() && fPattern[i+1] == QUOTE) {
                 appendTo += (UChar)QUOTE;
                 ++i;
             } else {
                 inQuote = ! inQuote;
             }
         }
         else if ( ! inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/)
                     || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) {
             // ch is a date-time pattern character to be interpreted
             // by subFormat(); count the number of times it is repeated
             prevCh = ch;
             ++count;
         }
         else {
             // Append quoted characters and unquoted non-pattern characters
             appendTo += ch;
         }
     }
     // Format the last item in the pattern, if any
     if (count > 0) {
         subFormat(appendTo, prevCh, count, fCapitalizationContext, fieldNum++, handler, *workCal, status);
     }
     if (calClone != NULL) {
         delete calClone;
     }
     return appendTo;
 }
 //----------------------------------------------------------------------
 /* Map calendar field into calendar 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.
  * NOTE: if new fields adds in, the table needs to update.
  */
 const int32_t
 SimpleDateFormat::fgCalendarFieldToLevel[] =
 {
     /*GyM*/ 0, 10, 20,
     /*wW*/ 20, 30,
     /*dDEF*/ 30, 20, 30, 30,
     /*ahHm*/ 40, 50, 50, 60,
     /*sS..*/ 70, 80,
     /*z?Y*/ 0, 0, 10,
     /*eug*/ 30, 10, 0,
     /*A*/ 40
 };
 /* Map calendar field LETTER into calendar field level.
  * the larger the level, the smaller the field unit.
  * NOTE: if new fields adds in, the table needs to update.
  */
 const int32_t
 SimpleDateFormat::fgPatternCharToLevel[] = {
     //       A   B   C   D   E   F   G   H   I   J   K   L   M   N   O
         -1, 40, -1, -1, 20, 30, 30,  0, 50, -1, -1, 50, 20, 20, -1,  0,
     //   P   Q   R   S   T   U   V   W   X   Y   Z
         -1, 20, -1, 80, -1, 10,  0, 30,  0, 10,  0, -1, -1, -1, -1, -1,
     //       a   b   c   d   e   f   g   h   i   j   k   l   m   n   o
         -1, 40, -1, 30, 30, 30, -1,  0, 50, -1, -1, 50, -1, 60, -1, -1,
     //   p   q   r   s   t   u   v   w   x   y   z
         -1, 20, -1, 70, -1, 10,  0, 20,  0, 10,  0, -1, -1, -1, -1, -1
 };
 // Map index into pattern character string to Calendar field number.
 const UCalendarDateFields
 SimpleDateFormat::fgPatternIndexToCalendarField[] =
 {
     /*GyM*/ UCAL_ERA, UCAL_YEAR, UCAL_MONTH,
     /*dkH*/ UCAL_DATE, UCAL_HOUR_OF_DAY, UCAL_HOUR_OF_DAY,
     /*msS*/ UCAL_MINUTE, UCAL_SECOND, UCAL_MILLISECOND,
     /*EDF*/ UCAL_DAY_OF_WEEK, UCAL_DAY_OF_YEAR, UCAL_DAY_OF_WEEK_IN_MONTH,
     /*wWa*/ UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, UCAL_AM_PM,
     /*hKz*/ UCAL_HOUR, UCAL_HOUR, UCAL_ZONE_OFFSET,
     /*Yeu*/ UCAL_YEAR_WOY, UCAL_DOW_LOCAL, UCAL_EXTENDED_YEAR,
     /*gAZ*/ UCAL_JULIAN_DAY, UCAL_MILLISECONDS_IN_DAY, UCAL_ZONE_OFFSET,
     /*v*/   UCAL_ZONE_OFFSET,
     /*c*/   UCAL_DOW_LOCAL,
     /*L*/   UCAL_MONTH,
     /*Q*/   UCAL_MONTH,
     /*q*/   UCAL_MONTH,
     /*V*/   UCAL_ZONE_OFFSET,
     /*U*/   UCAL_YEAR,
     /*O*/   UCAL_ZONE_OFFSET,
     /*Xx*/  UCAL_ZONE_OFFSET, UCAL_ZONE_OFFSET,
 };
 // Map index into pattern character string to DateFormat field number
 const UDateFormatField
 SimpleDateFormat::fgPatternIndexToDateFormatField[] = {
     /*GyM*/ UDAT_ERA_FIELD, UDAT_YEAR_FIELD, UDAT_MONTH_FIELD,
     /*dkH*/ UDAT_DATE_FIELD, UDAT_HOUR_OF_DAY1_FIELD, UDAT_HOUR_OF_DAY0_FIELD,
     /*msS*/ UDAT_MINUTE_FIELD, UDAT_SECOND_FIELD, UDAT_FRACTIONAL_SECOND_FIELD,
     /*EDF*/ UDAT_DAY_OF_WEEK_FIELD, UDAT_DAY_OF_YEAR_FIELD, UDAT_DAY_OF_WEEK_IN_MONTH_FIELD,
     /*wWa*/ UDAT_WEEK_OF_YEAR_FIELD, UDAT_WEEK_OF_MONTH_FIELD, UDAT_AM_PM_FIELD,
     /*hKz*/ UDAT_HOUR1_FIELD, UDAT_HOUR0_FIELD, UDAT_TIMEZONE_FIELD,
     /*Yeu*/ UDAT_YEAR_WOY_FIELD, UDAT_DOW_LOCAL_FIELD, UDAT_EXTENDED_YEAR_FIELD,
     /*gAZ*/ UDAT_JULIAN_DAY_FIELD, UDAT_MILLISECONDS_IN_DAY_FIELD, UDAT_TIMEZONE_RFC_FIELD,
     /*v*/   UDAT_TIMEZONE_GENERIC_FIELD,
     /*c*/   UDAT_STANDALONE_DAY_FIELD,
     /*L*/   UDAT_STANDALONE_MONTH_FIELD,
     /*Q*/   UDAT_QUARTER_FIELD,
     /*q*/   UDAT_STANDALONE_QUARTER_FIELD,
     /*V*/   UDAT_TIMEZONE_SPECIAL_FIELD,
     /*U*/   UDAT_YEAR_NAME_FIELD,
     /*O*/   UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD,
     /*Xx*/  UDAT_TIMEZONE_ISO_FIELD, UDAT_TIMEZONE_ISO_LOCAL_FIELD,
 };
 //----------------------------------------------------------------------
 /**
  * Append symbols[value] to dst.  Make sure the array index is not out
  * of bounds.
  */
 static inline void
 _appendSymbol(UnicodeString& dst,
               int32_t value,
               const UnicodeString* symbols,
               int32_t symbolsCount) {
     U_ASSERT(0 <= value && value < symbolsCount);
     if (0 <= value && value < symbolsCount) {
         dst += symbols[value];
     }
 }
 static inline void
 _appendSymbolWithMonthPattern(UnicodeString& dst, int32_t value, const UnicodeString* symbols, int32_t symbolsCount,
               const UnicodeString* monthPattern, UErrorCode& status) {
     U_ASSERT(0 <= value && value < symbolsCount);
     if (0 <= value && value < symbolsCount) {
         if (monthPattern == NULL) {
             dst += symbols[value];
         } else {
             Formattable monthName((const UnicodeString&)(symbols[value]));
             MessageFormat::format(*monthPattern, &monthName, 1, dst, status);
         }
     }
 }
 //----------------------------------------------------------------------
 void
 SimpleDateFormat::initNumberFormatters(const Locale &locale,UErrorCode &status) {
     if (U_FAILURE(status)) {
         return;
     }
     if ( fDateOverride.isBogus() && fTimeOverride.isBogus() ) {
         return;
     }
     umtx_lock(&LOCK);
     if (fNumberFormatters == NULL) {
         fNumberFormatters = (NumberFormat**)uprv_malloc(UDAT_FIELD_COUNT * sizeof(NumberFormat*));
         if (fNumberFormatters) {
             for (int32_t i = 0; i < UDAT_FIELD_COUNT; i++) {
                 fNumberFormatters[i] = fNumberFormat;
             }
         } else {
             status = U_MEMORY_ALLOCATION_ERROR;
         }
     }
     umtx_unlock(&LOCK);
     processOverrideString(locale,fDateOverride,kOvrStrDate,status);
     processOverrideString(locale,fTimeOverride,kOvrStrTime,status);
 }
 void
 SimpleDateFormat::processOverrideString(const Locale &locale, const UnicodeString &str, int8_t type, UErrorCode &status) {
     if (str.isBogus()) {
         return;
     }
     int32_t start = 0;
     int32_t len;
     UnicodeString nsName;
     UnicodeString ovrField;
     UBool moreToProcess = TRUE;
     while (moreToProcess) {
         int32_t delimiterPosition = str.indexOf((UChar)ULOC_KEYWORD_ITEM_SEPARATOR_UNICODE,start);
         if (delimiterPosition == -1) {
             moreToProcess = FALSE;
             len = str.length() - start;
         } else {
             len = delimiterPosition - start;
         }
         UnicodeString currentString(str,start,len);
         int32_t equalSignPosition = currentString.indexOf((UChar)ULOC_KEYWORD_ASSIGN_UNICODE,0);
         if (equalSignPosition == -1) { // Simple override string such as "hebrew"
             nsName.setTo(currentString);
             ovrField.setToBogus();
         } else { // Field specific override string such as "y=hebrew"
             nsName.setTo(currentString,equalSignPosition+1);
             ovrField.setTo(currentString,0,1); // We just need the first character.
         }
         int32_t nsNameHash = nsName.hashCode();
         // See if the numbering system is in the override list, if not, then add it.
         NSOverride *cur = fOverrideList;
         NumberFormat *nf = NULL;
         UBool found = FALSE;
         while ( cur && !found ) {
             if ( cur->hash == nsNameHash ) {
                 nf = cur->nf;
                 found = TRUE;
             }
             cur = cur->next;
         }
         if (!found) {
            cur = (NSOverride *)uprv_malloc(sizeof(NSOverride));
            if (cur) {
                char kw[ULOC_KEYWORD_AND_VALUES_CAPACITY];
                uprv_strcpy(kw,"numbers=");
                nsName.extract(0,len,kw+8,ULOC_KEYWORD_AND_VALUES_CAPACITY-8,US_INV);
                Locale ovrLoc(locale.getLanguage(),locale.getCountry(),locale.getVariant(),kw);
                nf = NumberFormat::createInstance(ovrLoc,status);
                // no matter what the locale's default number format looked like, we want
                // to modify it so that it doesn't use thousands separators, doesn't always
                // show the decimal point, and recognizes integers only when parsing
                if (U_SUCCESS(status)) {
                    nf->setGroupingUsed(FALSE);
                    DecimalFormat* decfmt = dynamic_cast<DecimalFormat*>(nf);
                    if (decfmt != NULL) {
                        decfmt->setDecimalSeparatorAlwaysShown(FALSE);
                    }
                    nf->setParseIntegerOnly(TRUE);
                    nf->setMinimumFractionDigits(0); // To prevent "Jan 1.00, 1997.00"
                    cur->nf = nf;
                    cur->hash = nsNameHash;
                    cur->next = fOverrideList;
                    fOverrideList = cur;
                }
                else {
                    // clean up before returning
                    if (cur != NULL) {
                        uprv_free(cur);
                    }
                   return;
                }
            } else {
                status = U_MEMORY_ALLOCATION_ERROR;
                return;
            }
         }
         // Now that we have an appropriate number formatter, fill in the appropriate spaces in the
         // number formatters table.
         if (ovrField.isBogus()) {
             switch (type) {
                 case kOvrStrDate:
                 case kOvrStrBoth: {
                     for ( int8_t i=0 ; i<kDateFieldsCount; i++ ) {
                         fNumberFormatters[kDateFields[i]] = nf;
                     }
                     if (type==kOvrStrDate) {
                         break;
                     }
                 }
                 case kOvrStrTime : {
                     for ( int8_t i=0 ; i<kTimeFieldsCount; i++ ) {
                         fNumberFormatters[kTimeFields[i]] = nf;
                     }
                     break;
                 }
             }
         } else {
            // if the pattern character is unrecognized, signal an error and bail out
            UDateFormatField patternCharIndex =
               DateFormatSymbols::getPatternCharIndex(ovrField.charAt(0));
            if (patternCharIndex == UDAT_FIELD_COUNT) {
                status = U_INVALID_FORMAT_ERROR;
                return;
            }
            // Set the number formatter in the table
            fNumberFormatters[patternCharIndex] = nf;
         }
         start = delimiterPosition + 1;
     }
 }
 //---------------------------------------------------------------------
 void
 SimpleDateFormat::subFormat(UnicodeString &appendTo,
                             UChar ch,
                             int32_t count,
                             UDisplayContext capitalizationContext,
                             int32_t fieldNum,
                             FieldPositionHandler& handler,
                             Calendar& cal,
                             UErrorCode& status) const
 {
     if (U_FAILURE(status)) {
         return;
     }
     // this function gets called by format() to produce the appropriate substitution
     // text for an individual pattern symbol (e.g., "HH" or "yyyy")
     UDateFormatField patternCharIndex = DateFormatSymbols::getPatternCharIndex(ch);
     const int32_t maxIntCount = 10;
     int32_t beginOffset = appendTo.length();
     NumberFormat *currentNumberFormat;
     DateFormatSymbols::ECapitalizationContextUsageType capContextUsageType = DateFormatSymbols::kCapContextUsageOther;
     UBool isHebrewCalendar = (uprv_strcmp(cal.getType(),"hebrew") == 0);
     UBool isChineseCalendar = (uprv_strcmp(cal.getType(),"chinese") == 0 || uprv_strcmp(cal.getType(),"dangi") == 0);
     // if the pattern character is unrecognized, signal an error and dump out
     if (patternCharIndex == UDAT_FIELD_COUNT)
     {
         if (ch != 0x6C) { // pattern char 'l' (SMALL LETTER L) just gets ignored
             status = U_INVALID_FORMAT_ERROR;
         }
         return;
     }
     UCalendarDateFields field = fgPatternIndexToCalendarField[patternCharIndex];
     int32_t value = cal.get(field, status);
     if (U_FAILURE(status)) {
         return;
     }
     currentNumberFormat = getNumberFormatByIndex(patternCharIndex);
     UnicodeString hebr("hebr", 4, US_INV);
     switch (patternCharIndex) {
     // for any "G" symbol, write out the appropriate era string
     // "GGGG" is wide era name, "GGGGG" is narrow era name, anything else is abbreviated name
     case UDAT_ERA_FIELD:
         if (isChineseCalendar) {
             zeroPaddingNumber(currentNumberFormat,appendTo, value, 1, 9); // as in ICU4J
         } else {
             if (count == 5) {
                 _appendSymbol(appendTo, value, fSymbols->fNarrowEras, fSymbols->fNarrowErasCount);
                 capContextUsageType = DateFormatSymbols::kCapContextUsageEraNarrow;
             } else if (count == 4) {
                 _appendSymbol(appendTo, value, fSymbols->fEraNames, fSymbols->fEraNamesCount);
                 capContextUsageType = DateFormatSymbols::kCapContextUsageEraWide;
             } else {
                 _appendSymbol(appendTo, value, fSymbols->fEras, fSymbols->fErasCount);
                 capContextUsageType = DateFormatSymbols::kCapContextUsageEraAbbrev;
             }
         }
         break;
      case UDAT_YEAR_NAME_FIELD:
         if (fSymbols->fShortYearNames != NULL && value <= fSymbols->fShortYearNamesCount) {
             // the Calendar YEAR field runs 1 through 60 for cyclic years
             _appendSymbol(appendTo, value - 1, fSymbols->fShortYearNames, fSymbols->fShortYearNamesCount);
             break;
         }
         // else fall through to numeric year handling, do not break here
    // OLD: for "yyyy", write out the whole year; for "yy", write out the last 2 digits
     // NEW: UTS#35:
 //Year         y     yy     yyy     yyyy     yyyyy
 //AD 1         1     01     001     0001     00001
 //AD 12       12     12     012     0012     00012
 //AD 123     123     23     123     0123     00123
 //AD 1234   1234     34    1234     1234     01234
 //AD 12345 12345     45   12345    12345     12345
     case UDAT_YEAR_FIELD:
     case UDAT_YEAR_WOY_FIELD:
         if (fDateOverride.compare(hebr)==0 && value>HEBREW_CAL_CUR_MILLENIUM_START_YEAR && value<HEBREW_CAL_CUR_MILLENIUM_END_YEAR) {
             value-=HEBREW_CAL_CUR_MILLENIUM_START_YEAR;
         }
         if(count == 2)
             zeroPaddingNumber(currentNumberFormat, appendTo, value, 2, 2);
         else
             zeroPaddingNumber(currentNumberFormat, appendTo, value, count, maxIntCount);
         break;
     // for "MMMM"/"LLLL", write out the whole month name, for "MMM"/"LLL", write out the month
     // abbreviation, for "M"/"L" or "MM"/"LL", write out the month as a number with the
     // appropriate number of digits
     // for "MMMMM"/"LLLLL", use the narrow form
     case UDAT_MONTH_FIELD:
     case UDAT_STANDALONE_MONTH_FIELD:
         if ( isHebrewCalendar ) {
            HebrewCalendar *hc = (HebrewCalendar*)&cal;
            if (hc->isLeapYear(hc->get(UCAL_YEAR,status)) && value == 6 && count >= 3 )
                value = 13; // Show alternate form for Adar II in leap years in Hebrew calendar.
            if (!hc->isLeapYear(hc->get(UCAL_YEAR,status)) && value >= 6 && count < 3 )
                value--; // Adjust the month number down 1 in Hebrew non-leap years, i.e. Adar is 6, not 7.
         }
         {
             int32_t isLeapMonth = (fSymbols->fLeapMonthPatterns != NULL && fSymbols->fLeapMonthPatternsCount >= DateFormatSymbols::kMonthPatternsCount)?
                         cal.get(UCAL_IS_LEAP_MONTH, status): 0;
             // should consolidate the next section by using arrays of pointers & counts for the right symbols...
             if (count == 5) {
                 if (patternCharIndex == UDAT_MONTH_FIELD) {
                     _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fNarrowMonths, fSymbols->fNarrowMonthsCount,
                             (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatNarrow]): NULL, status);
                 } else {
                     _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fStandaloneNarrowMonths, fSymbols->fStandaloneNarrowMonthsCount,
                             (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneNarrow]): NULL, status);
                 }
                 capContextUsageType = DateFormatSymbols::kCapContextUsageMonthNarrow;
             } else if (count == 4) {
                 if (patternCharIndex == UDAT_MONTH_FIELD) {
                     _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fMonths, fSymbols->fMonthsCount,
                             (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatWide]): NULL, status);
                     capContextUsageType = DateFormatSymbols::kCapContextUsageMonthFormat;
                 } else {
                     _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fStandaloneMonths, fSymbols->fStandaloneMonthsCount,
                             (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneWide]): NULL, status);
                     capContextUsageType = DateFormatSymbols::kCapContextUsageMonthStandalone;
                 }
             } else if (count == 3) {
                 if (patternCharIndex == UDAT_MONTH_FIELD) {
                     _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fShortMonths, fSymbols->fShortMonthsCount,
                             (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatAbbrev]): NULL, status);
                     capContextUsageType = DateFormatSymbols::kCapContextUsageMonthFormat;
                 } else {
                     _appendSymbolWithMonthPattern(appendTo, value, fSymbols->fStandaloneShortMonths, fSymbols->fStandaloneShortMonthsCount,
                             (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneAbbrev]): NULL, status);
                     capContextUsageType = DateFormatSymbols::kCapContextUsageMonthStandalone;
                 }
             } else {
                 UnicodeString monthNumber;
                 zeroPaddingNumber(currentNumberFormat,monthNumber, value + 1, count, maxIntCount);
                 _appendSymbolWithMonthPattern(appendTo, 0, &monthNumber, 1,
                         (isLeapMonth!=0)? &(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternNumeric]): NULL, status);
             }
         }
         break;
     // for "k" and "kk", write out the hour, adjusting midnight to appear as "24"
     case UDAT_HOUR_OF_DAY1_FIELD:
         if (value == 0)
             zeroPaddingNumber(currentNumberFormat,appendTo, cal.getMaximum(UCAL_HOUR_OF_DAY) + 1, count, maxIntCount);
         else
             zeroPaddingNumber(currentNumberFormat,appendTo, value, count, maxIntCount);
         break;
     case UDAT_FRACTIONAL_SECOND_FIELD:
         // Fractional seconds left-justify
         {
             currentNumberFormat->setMinimumIntegerDigits((count > 3) ? 3 : count);
             currentNumberFormat->setMaximumIntegerDigits(maxIntCount);
             if (count == 1) {
                 value /= 100;
             } else if (count == 2) {
                 value /= 10;
             }
             FieldPosition p(0);
             currentNumberFormat->format(value, appendTo, p);
             if (count > 3) {
                 currentNumberFormat->setMinimumIntegerDigits(count - 3);
                 currentNumberFormat->format((int32_t)0, appendTo, p);
             }
         }
         break;
     // for "ee" or "e", use local numeric day-of-the-week
     // for "EEEEEE" or "eeeeee", write out the short day-of-the-week name
     // for "EEEEE" or "eeeee", write out the narrow day-of-the-week name
     // for "EEEE" or "eeee", write out the wide day-of-the-week name
     // for "EEE" or "EE" or "E" or "eee", write out the abbreviated day-of-the-week name
     case UDAT_DOW_LOCAL_FIELD:
         if ( count < 3 ) {
             zeroPaddingNumber(currentNumberFormat,appendTo, value, count, maxIntCount);
             break;
         }
         // fall through to EEEEE-EEE handling, but for that we don't want local day-of-week,
         // we want standard day-of-week, so first fix value to work for EEEEE-EEE.
         value = cal.get(UCAL_DAY_OF_WEEK, status);
         if (U_FAILURE(status)) {
             return;
         }
         // fall through, do not break here
     case UDAT_DAY_OF_WEEK_FIELD:
         if (count == 5) {
             _appendSymbol(appendTo, value, fSymbols->fNarrowWeekdays,
                           fSymbols->fNarrowWeekdaysCount);
             capContextUsageType = DateFormatSymbols::kCapContextUsageDayNarrow;
         } else if (count == 4) {
             _appendSymbol(appendTo, value, fSymbols->fWeekdays,
                           fSymbols->fWeekdaysCount);
             capContextUsageType = DateFormatSymbols::kCapContextUsageDayFormat;
         } else if (count == 6) {
             _appendSymbol(appendTo, value, fSymbols->fShorterWeekdays,
                           fSymbols->fShorterWeekdaysCount);
             capContextUsageType = DateFormatSymbols::kCapContextUsageDayFormat;
         } else {
             _appendSymbol(appendTo, value, fSymbols->fShortWeekdays,
                           fSymbols->fShortWeekdaysCount);
             capContextUsageType = DateFormatSymbols::kCapContextUsageDayFormat;
         }
         break;
     // for "ccc", write out the abbreviated day-of-the-week name
     // for "cccc", write out the wide day-of-the-week name
     // for "ccccc", use the narrow day-of-the-week name
     // for "ccccc", use the short day-of-the-week name
     case UDAT_STANDALONE_DAY_FIELD:
         if ( count < 3 ) {
             zeroPaddingNumber(currentNumberFormat,appendTo, value, 1, maxIntCount);
             break;
         }
         // fall through to alpha DOW handling, but for that we don't want local day-of-week,
         // we want standard day-of-week, so first fix value.
         value = cal.get(UCAL_DAY_OF_WEEK, status);
         if (U_FAILURE(status)) {
             return;
         }
         if (count == 5) {
             _appendSymbol(appendTo, value, fSymbols->fStandaloneNarrowWeekdays,
                           fSymbols->fStandaloneNarrowWeekdaysCount);
             capContextUsageType = DateFormatSymbols::kCapContextUsageDayNarrow;
         } else if (count == 4) {
             _appendSymbol(appendTo, value, fSymbols->fStandaloneWeekdays,
                           fSymbols->fStandaloneWeekdaysCount);
             capContextUsageType = DateFormatSymbols::kCapContextUsageDayStandalone;
         } else if (count == 6) {
             _appendSymbol(appendTo, value, fSymbols->fStandaloneShorterWeekdays,
                           fSymbols->fStandaloneShorterWeekdaysCount);
             capContextUsageType = DateFormatSymbols::kCapContextUsageDayStandalone;
         } else { // count == 3
             _appendSymbol(appendTo, value, fSymbols->fStandaloneShortWeekdays,
                           fSymbols->fStandaloneShortWeekdaysCount);
             capContextUsageType = DateFormatSymbols::kCapContextUsageDayStandalone;
         }
         break;
     // for and "a" symbol, write out the whole AM/PM string
     case UDAT_AM_PM_FIELD:
         _appendSymbol(appendTo, value, fSymbols->fAmPms,
                       fSymbols->fAmPmsCount);
         break;
     // for "h" and "hh", write out the hour, adjusting noon and midnight to show up
     // as "12"
     case UDAT_HOUR1_FIELD:
         if (value == 0)
             zeroPaddingNumber(currentNumberFormat,appendTo, cal.getLeastMaximum(UCAL_HOUR) + 1, count, maxIntCount);
         else
             zeroPaddingNumber(currentNumberFormat,appendTo, value, count, maxIntCount);
         break;
     case UDAT_TIMEZONE_FIELD: // 'z'
     case UDAT_TIMEZONE_RFC_FIELD: // 'Z'
     case UDAT_TIMEZONE_GENERIC_FIELD: // 'v'
     case UDAT_TIMEZONE_SPECIAL_FIELD: // 'V'
     case UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD: // 'O'
     case UDAT_TIMEZONE_ISO_FIELD: // 'X'
     case UDAT_TIMEZONE_ISO_LOCAL_FIELD: // 'x'
         {
             UnicodeString zoneString;
             const TimeZone& tz = cal.getTimeZone();
             UDate date = cal.getTime(status);
             if (U_SUCCESS(status)) {
                 if (patternCharIndex == UDAT_TIMEZONE_FIELD) {
                     if (count < 4) {
                         // "z", "zz", "zzz"
                         tzFormat()->format(UTZFMT_STYLE_SPECIFIC_SHORT, tz, date, zoneString);
                         capContextUsageType = DateFormatSymbols::kCapContextUsageMetazoneShort;
                     } else {
                         // "zzzz" or longer
                         tzFormat()->format(UTZFMT_STYLE_SPECIFIC_LONG, tz, date, zoneString);
                         capContextUsageType = DateFormatSymbols::kCapContextUsageMetazoneLong;
                     }
                 }
                 else if (patternCharIndex == UDAT_TIMEZONE_RFC_FIELD) {
                     if (count < 4) {
                         // "Z"
                         tzFormat()->format(UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL, tz, date, zoneString);
                     } else if (count == 5) {
                         // "ZZZZZ"
                         tzFormat()->format(UTZFMT_STYLE_ISO_EXTENDED_FULL, tz, date, zoneString);
                     } else {
                         // "ZZ", "ZZZ", "ZZZZ"
                         tzFormat()->format(UTZFMT_STYLE_LOCALIZED_GMT, tz, date, zoneString);
                     }
                 }
                 else if (patternCharIndex == UDAT_TIMEZONE_GENERIC_FIELD) {
                     if (count == 1) {
                         // "v"
                         tzFormat()->format(UTZFMT_STYLE_GENERIC_SHORT, tz, date, zoneString);
                         capContextUsageType = DateFormatSymbols::kCapContextUsageMetazoneShort;
                     } else if (count == 4) {
                         // "vvvv"
                         tzFormat()->format(UTZFMT_STYLE_GENERIC_LONG, tz, date, zoneString);
                         capContextUsageType = DateFormatSymbols::kCapContextUsageMetazoneLong;
                     }
                 }
                 else if (patternCharIndex == UDAT_TIMEZONE_SPECIAL_FIELD) {
                     if (count == 1) {
                         // "V"
                         tzFormat()->format(UTZFMT_STYLE_ZONE_ID_SHORT, tz, date, zoneString);
                     } else if (count == 2) {
                         // "VV"
                         tzFormat()->format(UTZFMT_STYLE_ZONE_ID, tz, date, zoneString);
                     } else if (count == 3) {
                         // "VVV"
                         tzFormat()->format(UTZFMT_STYLE_EXEMPLAR_LOCATION, tz, date, zoneString);
                     } else if (count == 4) {
                         // "VVVV"
                         tzFormat()->format(UTZFMT_STYLE_GENERIC_LOCATION, tz, date, zoneString);
                         capContextUsageType = DateFormatSymbols::kCapContextUsageZoneLong;
                     }
                 }
                 else if (patternCharIndex == UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD) {
                     if (count == 1) {
                         // "O"
                         tzFormat()->format(UTZFMT_STYLE_LOCALIZED_GMT_SHORT, tz, date, zoneString);
                     } else if (count == 4) {
                         // "OOOO"
                         tzFormat()->format(UTZFMT_STYLE_LOCALIZED_GMT, tz, date, zoneString);
                     }
                 }
                 else if (patternCharIndex == UDAT_TIMEZONE_ISO_FIELD) {
                     if (count == 1) {
                         // "X"
                         tzFormat()->format(UTZFMT_STYLE_ISO_BASIC_SHORT, tz, date, zoneString);
                     } else if (count == 2) {
                         // "XX"
                         tzFormat()->format(UTZFMT_STYLE_ISO_BASIC_FIXED, tz, date, zoneString);
                     } else if (count == 3) {
                         // "XXX"
                         tzFormat()->format(UTZFMT_STYLE_ISO_EXTENDED_FIXED, tz, date, zoneString);
                     } else if (count == 4) {
                         // "XXXX"
                         tzFormat()->format(UTZFMT_STYLE_ISO_BASIC_FULL, tz, date, zoneString);
                     } else if (count == 5) {
                         // "XXXXX"
                         tzFormat()->format(UTZFMT_STYLE_ISO_EXTENDED_FULL, tz, date, zoneString);
                     }
                 }
                 else if (patternCharIndex == UDAT_TIMEZONE_ISO_LOCAL_FIELD) {
                     if (count == 1) {
                         // "x"
                         tzFormat()->format(UTZFMT_STYLE_ISO_BASIC_LOCAL_SHORT, tz, date, zoneString);
                     } else if (count == 2) {
                         // "xx"
                         tzFormat()->format(UTZFMT_STYLE_ISO_BASIC_LOCAL_FIXED, tz, date, zoneString);
                     } else if (count == 3) {
                         // "xxx"
                         tzFormat()->format(UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FIXED, tz, date, zoneString);
                     } else if (count == 4) {
                         // "xxxx"
                         tzFormat()->format(UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL, tz, date, zoneString);
                     } else if (count == 5) {
                         // "xxxxx"
                         tzFormat()->format(UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FULL, tz, date, zoneString);
                     }
                 }
                 else {
                     U_ASSERT(FALSE);
                 }
             }
             appendTo += zoneString;
         }
         break;
     case UDAT_QUARTER_FIELD:
         if (count >= 4)
             _appendSymbol(appendTo, value/3, fSymbols->fQuarters,
                           fSymbols->fQuartersCount);
         else if (count == 3)
             _appendSymbol(appendTo, value/3, fSymbols->fShortQuarters,
                           fSymbols->fShortQuartersCount);
         else
             zeroPaddingNumber(currentNumberFormat,appendTo, (value/3) + 1, count, maxIntCount);
         break;
     case UDAT_STANDALONE_QUARTER_FIELD:
         if (count >= 4)
             _appendSymbol(appendTo, value/3, fSymbols->fStandaloneQuarters,
                           fSymbols->fStandaloneQuartersCount);
         else if (count == 3)
             _appendSymbol(appendTo, value/3, fSymbols->fStandaloneShortQuarters,
                           fSymbols->fStandaloneShortQuartersCount);
         else
             zeroPaddingNumber(currentNumberFormat,appendTo, (value/3) + 1, count, maxIntCount);
         break;
     // all of the other pattern symbols can be formatted as simple numbers with
     // appropriate zero padding
     default:
         zeroPaddingNumber(currentNumberFormat,appendTo, value, count, maxIntCount);
         break;
     }
 #if !UCONFIG_NO_BREAK_ITERATION
     if (fieldNum == 0) {
         // first field, check to see whether we need to titlecase it
         UBool titlecase = FALSE;
         switch (capitalizationContext) {
             case UDISPCTX_CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE:
                 titlecase = TRUE;
                 break;
             case UDISPCTX_CAPITALIZATION_FOR_UI_LIST_OR_MENU:
                 titlecase = fSymbols->fCapitalization[capContextUsageType][0];
                 break;
             case UDISPCTX_CAPITALIZATION_FOR_STANDALONE:
                 titlecase = fSymbols->fCapitalization[capContextUsageType][1];
                 break;
             default:
                 // titlecase = FALSE;
                 break;
         }
         if (titlecase) {
             UnicodeString firstField(appendTo, beginOffset);
             firstField.toTitle(NULL, fLocale, U_TITLECASE_NO_LOWERCASE | U_TITLECASE_NO_BREAK_ADJUSTMENT);
             appendTo.replaceBetween(beginOffset, appendTo.length(), firstField);
         }
     }
 #endif
     handler.addAttribute(fgPatternIndexToDateFormatField[patternCharIndex], beginOffset, appendTo.length());
 }
 //----------------------------------------------------------------------
 NumberFormat *
 SimpleDateFormat::getNumberFormatByIndex(UDateFormatField index) const {
     if (fNumberFormatters != NULL) {
         return fNumberFormatters[index];
     } else {
         return fNumberFormat;
     }
 }
 //----------------------------------------------------------------------
 void
 SimpleDateFormat::zeroPaddingNumber(NumberFormat *currentNumberFormat,UnicodeString &appendTo,
                                     int32_t value, int32_t minDigits, int32_t maxDigits) const
 {
     if (currentNumberFormat!=NULL) {
         FieldPosition pos(0);
         currentNumberFormat->setMinimumIntegerDigits(minDigits);
         currentNumberFormat->setMaximumIntegerDigits(maxDigits);
         currentNumberFormat->format(value, appendTo, pos);  // 3rd arg is there to speed up processing
     }
 }
 //----------------------------------------------------------------------
 /**
  * Return true if the given format character, occuring count
  * times, represents a numeric field.
  */
 UBool SimpleDateFormat::isNumeric(UChar formatChar, int32_t count) {
     return DateFormatSymbols::isNumericPatternChar(formatChar, count);
 }
 UBool
 SimpleDateFormat::isAtNumericField(const UnicodeString &pattern, int32_t patternOffset) {
     if (patternOffset >= pattern.length()) {
         // not at any field
         return FALSE;
     }
     UChar ch = pattern.charAt(patternOffset);
     UDateFormatField f = DateFormatSymbols::getPatternCharIndex(ch);
     if (f == UDAT_FIELD_COUNT) {
         // not at any field
         return FALSE;
     }
     int32_t i = patternOffset;
     while (pattern.charAt(++i) == ch) {}
     return DateFormatSymbols::isNumericField(f, i - patternOffset);
 }
 UBool
 SimpleDateFormat::isAfterNonNumericField(const UnicodeString &pattern, int32_t patternOffset) {
     if (patternOffset <= 0) {
         // not after any field
         return FALSE;
     }
     UChar ch = pattern.charAt(--patternOffset);
     UDateFormatField f = DateFormatSymbols::getPatternCharIndex(ch);
     if (f == UDAT_FIELD_COUNT) {
         // not after any field
         return FALSE;
     }
     int32_t i = patternOffset;
     while (pattern.charAt(--i) == ch) {}
     return !DateFormatSymbols::isNumericField(f, patternOffset - i);
 }
 void
 SimpleDateFormat::parse(const UnicodeString& text, Calendar& cal, ParsePosition& parsePos) const
 {
     UErrorCode status = U_ZERO_ERROR;
     int32_t pos = parsePos.getIndex();
     int32_t start = pos;
     UBool ambiguousYear[] = { FALSE };
     int32_t saveHebrewMonth = -1;
     int32_t count = 0;
     // hack, reset tztype, cast away const
     ((SimpleDateFormat*)this)->tztype = UTZFMT_TIME_TYPE_UNKNOWN;
     // For parsing abutting numeric fields. 'abutPat' is the
     // offset into 'pattern' of the first of 2 or more abutting
     // numeric fields.  'abutStart' is the offset into 'text'
     // where parsing the fields begins. 'abutPass' starts off as 0
     // and increments each time we try to parse the fields.
     int32_t abutPat = -1; // If >=0, we are in a run of abutting numeric fields
     int32_t abutStart = 0;
     int32_t abutPass = 0;
     UBool inQuote = FALSE;
     MessageFormat * numericLeapMonthFormatter = NULL;
     Calendar* calClone = NULL;
     Calendar *workCal = &cal;
     if (&cal != fCalendar && uprv_strcmp(cal.getType(), fCalendar->getType()) != 0) {
         // Different calendar type
         // We use the time/zone from the input calendar, but
         // do not use the input calendar for field calculation.
         calClone = fCalendar->clone();
         if (calClone != NULL) {
             calClone->setTime(cal.getTime(status),status);
             if (U_FAILURE(status)) {
                 goto ExitParse;
             }
             calClone->setTimeZone(cal.getTimeZone());
             workCal = calClone;
         } else {
             status = U_MEMORY_ALLOCATION_ERROR;
             goto ExitParse;
         }
     }
     if (fSymbols->fLeapMonthPatterns != NULL && fSymbols->fLeapMonthPatternsCount >= DateFormatSymbols::kMonthPatternsCount) {
         numericLeapMonthFormatter = new MessageFormat(fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternNumeric], fLocale, status);
         if (numericLeapMonthFormatter == NULL) {
              status = U_MEMORY_ALLOCATION_ERROR;
              goto ExitParse;
         } else if (U_FAILURE(status)) {
              goto ExitParse; // this will delete numericLeapMonthFormatter
         }
     }
     for (int32_t i=0; i<fPattern.length(); ++i) {
         UChar ch = fPattern.charAt(i);
         // Handle alphabetic field characters.
         if (!inQuote && ((ch >= 0x41 && ch <= 0x5A) || (ch >= 0x61 && ch <= 0x7A))) { // [A-Za-z]
             int32_t fieldPat = i;
             // Count the length of this field specifier
             count = 1;
             while ((i+1)<fPattern.length() &&
                    fPattern.charAt(i+1) == ch) {
                 ++count;
                 ++i;
             }
             if (isNumeric(ch, count)) {
                 if (abutPat < 0) {
                     // Determine if there is an abutting numeric field.
                     // Record the start of a set of abutting numeric fields.
                     if (isAtNumericField(fPattern, i + 1)) {
                         abutPat = fieldPat;
                         abutStart = pos;
                         abutPass = 0;
                     }
                 }
             } else {
                 abutPat = -1; // End of any abutting fields
             }
             // Handle fields within a run of abutting numeric fields.  Take
             // the pattern "HHmmss" as an example. We will try to parse
             // 2/2/2 characters of the input text, then if that fails,
             // 1/2/2.  We only adjust the width of the leftmost field; the
             // others remain fixed.  This allows "123456" => 12:34:56, but
             // "12345" => 1:23:45.  Likewise, for the pattern "yyyyMMdd" we
             // try 4/2/2, 3/2/2, 2/2/2, and finally 1/2/2.
             if (abutPat >= 0) {
                 // If we are at the start of a run of abutting fields, then
                 // shorten this field in each pass.  If we can't shorten
                 // this field any more, then the parse of this set of
                 // abutting numeric fields has failed.
                 if (fieldPat == abutPat) {
                     count -= abutPass++;
                     if (count == 0) {
                         status = U_PARSE_ERROR;
                         goto ExitParse;
                     }
                 }
                 pos = subParse(text, pos, ch, count,
                                TRUE, FALSE, ambiguousYear, saveHebrewMonth, *workCal, i, numericLeapMonthFormatter);
                 // If the parse fails anywhere in the run, back up to the
                 // start of the run and retry.
                 if (pos < 0) {
                     i = abutPat - 1;
                     pos = abutStart;
                     continue;
                 }
             }
             // Handle non-numeric fields and non-abutting numeric
             // fields.
             else if (ch != 0x6C) { // pattern char 'l' (SMALL LETTER L) just gets ignored
                 int32_t s = subParse(text, pos, ch, count,
                                FALSE, TRUE, ambiguousYear, saveHebrewMonth, *workCal, i, numericLeapMonthFormatter);
                 if (s == -pos-1) {
                     // era not present, in special cases allow this to continue
                     // from the position where the era was expected
                     s = pos;
                     if (i+1 < fPattern.length()) {
                         // move to next pattern character
                         UChar ch = fPattern.charAt(i+1);
                         // check for whitespace
                         if (PatternProps::isWhiteSpace(ch)) {
                             i++;
                             // Advance over run in pattern
                             while ((i+1)<fPattern.length() &&
                                    PatternProps::isWhiteSpace(fPattern.charAt(i+1))) {
                                 ++i;
                             }
                         }
                     }
                 }
                 else if (s <= 0) {
                     status = U_PARSE_ERROR;
                     goto ExitParse;
                 }
                 pos = s;
             }
         }
         // Handle literal pattern characters.  These are any
         // quoted characters and non-alphabetic unquoted
         // characters.
         else {
             abutPat = -1; // End of any abutting fields
             if (! matchLiterals(fPattern, i, text, pos, getBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, status))) {
                 status = U_PARSE_ERROR;
                 goto ExitParse;
             }
         }
     }
     // Special hack for trailing "." after non-numeric field.
     if (text.charAt(pos) == 0x2e && getBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, status)) {
         // only do if the last field is not numeric
         if (isAfterNonNumericField(fPattern, fPattern.length())) {
             pos++; // skip the extra "."
         }
     }
     // At this point the fields of Calendar have been set.  Calendar
     // will fill in default values for missing fields when the time
     // is computed.
     parsePos.setIndex(pos);
     // This part is a problem:  When we call parsedDate.after, we compute the time.
     // Take the date April 3 2004 at 2:30 am.  When this is first set up, the year
     // will be wrong if we're parsing a 2-digit year pattern.  It will be 1904.
     // April 3 1904 is a Sunday (unlike 2004) so it is the DST onset day.  2:30 am
     // is therefore an "impossible" time, since the time goes from 1:59 to 3:00 am
     // on that day.  It is therefore parsed out to fields as 3:30 am.  Then we
     // add 100 years, and get April 3 2004 at 3:30 am.  Note that April 3 2004 is
     // a Saturday, so it can have a 2:30 am -- and it should. [LIU]
     /*
         UDate parsedDate = calendar.getTime();
         if( ambiguousYear[0] && !parsedDate.after(fDefaultCenturyStart) ) {
             calendar.add(Calendar.YEAR, 100);
             parsedDate = calendar.getTime();
         }
     */
     // Because of the above condition, save off the fields in case we need to readjust.
     // The procedure we use here is not particularly efficient, but there is no other
     // way to do this given the API restrictions present in Calendar.  We minimize
     // inefficiency by only performing this computation when it might apply, that is,
     // when the two-digit year is equal to the start year, and thus might fall at the
     // front or the back of the default century.  This only works because we adjust
     // the year correctly to start with in other cases -- see subParse().
     if (ambiguousYear[0] || tztype != UTZFMT_TIME_TYPE_UNKNOWN) // If this is true then the two-digit year == the default start year
     {
         // We need a copy of the fields, and we need to avoid triggering a call to
         // complete(), which will recalculate the fields.  Since we can't access
         // the fields[] array in Calendar, we clone the entire object.  This will
         // stop working if Calendar.clone() is ever rewritten to call complete().
         Calendar *copy;
         if (ambiguousYear[0]) {
             copy = cal.clone();
             // Check for failed cloning.
             if (copy == NULL) {
                 status = U_MEMORY_ALLOCATION_ERROR;
                 goto ExitParse;
             }
             UDate parsedDate = copy->getTime(status);
             // {sfb} check internalGetDefaultCenturyStart
             if (fHaveDefaultCentury && (parsedDate < fDefaultCenturyStart)) {
                 // We can't use add here because that does a complete() first.
                 cal.set(UCAL_YEAR, fDefaultCenturyStartYear + 100);
             }
             delete copy;
         }
         if (tztype != UTZFMT_TIME_TYPE_UNKNOWN) {
             copy = cal.clone();
             // Check for failed cloning.
             if (copy == NULL) {
                 status = U_MEMORY_ALLOCATION_ERROR;
                 goto ExitParse;
             }
             const TimeZone & tz = cal.getTimeZone();
             BasicTimeZone *btz = NULL;
             if (dynamic_cast<const OlsonTimeZone *>(&tz) != NULL
                 || dynamic_cast<const SimpleTimeZone *>(&tz) != NULL
                 || dynamic_cast<const RuleBasedTimeZone *>(&tz) != NULL
                 || dynamic_cast<const VTimeZone *>(&tz) != NULL) {
                 btz = (BasicTimeZone*)&tz;
             }
             // Get local millis
             copy->set(UCAL_ZONE_OFFSET, 0);
             copy->set(UCAL_DST_OFFSET, 0);
             UDate localMillis = copy->getTime(status);
             // Make sure parsed time zone type (Standard or Daylight)
             // matches the rule used by the parsed time zone.
             int32_t raw, dst;
             if (btz != NULL) {
                 if (tztype == UTZFMT_TIME_TYPE_STANDARD) {
                     btz->getOffsetFromLocal(localMillis,
                         BasicTimeZone::kStandard, BasicTimeZone::kStandard, raw, dst, status);
                 } else {
                     btz->getOffsetFromLocal(localMillis,
                         BasicTimeZone::kDaylight, BasicTimeZone::kDaylight, raw, dst, status);
                 }
             } else {
                 // No good way to resolve ambiguous time at transition,
                 // but following code work in most case.
                 tz.getOffset(localMillis, TRUE, raw, dst, status);
             }
             // Now, compare the results with parsed type, either standard or daylight saving time
             int32_t resolvedSavings = dst;
             if (tztype == UTZFMT_TIME_TYPE_STANDARD) {
                 if (dst != 0) {
                     // Override DST_OFFSET = 0 in the result calendar
                     resolvedSavings = 0;
                 }
             } else { // tztype == TZTYPE_DST
                 if (dst == 0) {
                     if (btz != NULL) {
                         UDate time = localMillis + raw;
                         // We use the nearest daylight saving time rule.
                         TimeZoneTransition beforeTrs, afterTrs;
                         UDate beforeT = time, afterT = time;
                         int32_t beforeSav = 0, afterSav = 0;
                         UBool beforeTrsAvail, afterTrsAvail;
                         // Search for DST rule before or on the time
                         while (TRUE) {
                             beforeTrsAvail = btz->getPreviousTransition(beforeT, TRUE, beforeTrs);
                             if (!beforeTrsAvail) {
                                 break;
                             }
                             beforeT = beforeTrs.getTime() - 1;
                             beforeSav = beforeTrs.getFrom()->getDSTSavings();
                             if (beforeSav != 0) {
                                 break;
                             }
                         }
                         // Search for DST rule after the time
                         while (TRUE) {
                             afterTrsAvail = btz->getNextTransition(afterT, FALSE, afterTrs);
                             if (!afterTrsAvail) {
                                 break;
                             }
                             afterT = afterTrs.getTime();
                             afterSav = afterTrs.getTo()->getDSTSavings();
                             if (afterSav != 0) {
                                 break;
                             }
                         }
                         if (beforeTrsAvail && afterTrsAvail) {
                             if (time - beforeT > afterT - time) {
                                 resolvedSavings = afterSav;
                             } else {
                                 resolvedSavings = beforeSav;
                             }
                         } else if (beforeTrsAvail && beforeSav != 0) {
                             resolvedSavings = beforeSav;
                         } else if (afterTrsAvail && afterSav != 0) {
                             resolvedSavings = afterSav;
                         } else {
                             resolvedSavings = btz->getDSTSavings();
                         }
                     } else {
                         resolvedSavings = tz.getDSTSavings();
                     }
                     if (resolvedSavings == 0) {
                         // final fallback
                         resolvedSavings = U_MILLIS_PER_HOUR;
                     }
                 }
             }
             cal.set(UCAL_ZONE_OFFSET, raw);
             cal.set(UCAL_DST_OFFSET, resolvedSavings);
             delete copy;
         }
     }
 ExitParse:
     // Set the parsed result if local calendar is used
     // instead of the input calendar
     if (U_SUCCESS(status) && workCal != &cal) {
         cal.setTimeZone(workCal->getTimeZone());
         cal.setTime(workCal->getTime(status), status);
     }
     if (numericLeapMonthFormatter != NULL) {
         delete numericLeapMonthFormatter;
     }
     if (calClone != NULL) {
         delete calClone;
     }
     // If any Calendar calls failed, we pretend that we
     // couldn't parse the string, when in reality this isn't quite accurate--
     // we did parse it; the Calendar calls just failed.
     if (U_FAILURE(status)) {
         parsePos.setErrorIndex(pos);
         parsePos.setIndex(start);
     }
 }
 //----------------------------------------------------------------------
 static UBool
 newBestMatchWithOptionalDot(const UnicodeString &lcaseText,
                             const UnicodeString &data,
                             UnicodeString &bestMatchName,
                             int32_t &bestMatchLength);
 int32_t SimpleDateFormat::matchQuarterString(const UnicodeString& text,
                               int32_t start,
                               UCalendarDateFields field,
                               const UnicodeString* data,
                               int32_t dataCount,
                               Calendar& cal) const
 {
     int32_t i = 0;
     int32_t count = dataCount;
     // There may be multiple strings in the data[] array which begin with
     // the same prefix (e.g., Cerven and Cervenec (June and July) in Czech).
     // We keep track of the longest match, and return that.  Note that this
     // unfortunately requires us to test all array elements.
     int32_t bestMatchLength = 0, bestMatch = -1;
     UnicodeString bestMatchName;
     // {sfb} kludge to support case-insensitive comparison
     // {markus 2002oct11} do not just use caseCompareBetween because we do not know
     // the length of the match after case folding
     // {alan 20040607} don't case change the whole string, since the length
     // can change
     // TODO we need a case-insensitive startsWith function
     UnicodeString lcaseText;
     text.extract(start, INT32_MAX, lcaseText);
     lcaseText.foldCase();
     for (; i < count; ++i)
     {
         // Always compare if we have no match yet; otherwise only compare
         // against potentially better matches (longer strings).
         if (newBestMatchWithOptionalDot(lcaseText, data[i], bestMatchName, bestMatchLength)) {
             bestMatch = i;
         }
     }
     if (bestMatch >= 0)
     {
         cal.set(field, bestMatch * 3);
         // Once we have a match, we have to determine the length of the
         // original source string.  This will usually be == the length of
         // the case folded string, but it may differ (e.g. sharp s).
         // Most of the time, the length will be the same as the length
         // of the string from the locale data.  Sometimes it will be
         // different, in which case we will have to figure it out by
         // adding a character at a time, until we have a match.  We do
         // this all in one loop, where we try 'len' first (at index
         // i==0).
         int32_t len = bestMatchName.length(); // 99+% of the time
         int32_t n = text.length() - start;
         for (i=0; i<=n; ++i) {
             int32_t j=i;
             if (i == 0) {
                 j = len;
             } else if (i == len) {
                 continue; // already tried this when i was 0
             }
             text.extract(start, j, lcaseText);
             lcaseText.foldCase();
             if (bestMatchName == lcaseText) {
                 return start + j;
             }
         }
     }
     return -start;
 }
 //----------------------------------------------------------------------
 UBool SimpleDateFormat::matchLiterals(const UnicodeString &pattern,
                                       int32_t &patternOffset,
                                       const UnicodeString &text,
                                       int32_t &textOffset,
                                       UBool lenient)
 {
     UBool inQuote = FALSE;
     UnicodeString literal;
     int32_t i = patternOffset;
     // scan pattern looking for contiguous literal characters
     for ( ; i < pattern.length(); i += 1) {
         UChar ch = pattern.charAt(i);
         if (!inQuote && ((ch >= 0x41 && ch <= 0x5A) || (ch >= 0x61 && ch <= 0x7A))) { // unquoted [A-Za-z]
             break;
         }
         if (ch == QUOTE) {
             // Match a quote literal ('') inside OR outside of quotes
             if ((i + 1) < pattern.length() && pattern.charAt(i + 1) == QUOTE) {
                 i += 1;
             } else {
                 inQuote = !inQuote;
                 continue;
             }
         }
         literal += ch;
     }
     // at this point, literal contains the literal text
     // and i is the index of the next non-literal pattern character.
     int32_t p;
     int32_t t = textOffset;
     if (lenient) {
         // trim leading, trailing whitespace from
         // the literal text
         literal.trim();
         // ignore any leading whitespace in the text
         while (t < text.length() && u_isWhitespace(text.charAt(t))) {
             t += 1;
         }
     }
     for (p = 0; p < literal.length() && t < text.length();) {
         UBool needWhitespace = FALSE;
         while (p < literal.length() && PatternProps::isWhiteSpace(literal.charAt(p))) {
             needWhitespace = TRUE;
             p += 1;
         }
         if (needWhitespace) {
             int32_t tStart = t;
             while (t < text.length()) {
                 UChar tch = text.charAt(t);
                 if (!u_isUWhiteSpace(tch) && !PatternProps::isWhiteSpace(tch)) {
                     break;
                 }
                 t += 1;
             }
             // TODO: should we require internal spaces
             // in lenient mode? (There won't be any
             // leading or trailing spaces)
             if (!lenient && t == tStart) {
                 // didn't find matching whitespace:
                 // an error in strict mode
                 return FALSE;
             }
             // In strict mode, this run of whitespace
             // may have been at the end.
             if (p >= literal.length()) {
                 break;
             }
         }
         if (t >= text.length() || literal.charAt(p) != text.charAt(t)) {
             // Ran out of text, or found a non-matching character:
             // OK in lenient mode, an error in strict mode.
             if (lenient) {
                 if (t == textOffset && text.charAt(t) == 0x2e &&
                         isAfterNonNumericField(pattern, patternOffset)) {
                     // Lenient mode and the literal input text begins with a "." and
                     // we are after a non-numeric field: We skip the "."
                     ++t;
                     continue;  // Do not update p.
                 }
                 break;
             }
             return FALSE;
         }
         ++p;
         ++t;
     }
     // At this point if we're in strict mode we have a complete match.
     // If we're in lenient mode we may have a partial match, or no
     // match at all.
     if (p <= 0) {
         // no match. Pretend it matched a run of whitespace
         // and ignorables in the text.
         const  UnicodeSet *ignorables = NULL;
         UDateFormatField patternCharIndex = DateFormatSymbols::getPatternCharIndex(pattern.charAt(i));
         if (patternCharIndex != UDAT_FIELD_COUNT) {
             ignorables = SimpleDateFormatStaticSets::getIgnorables(patternCharIndex);
         }
         for (t = textOffset; t < text.length(); t += 1) {
             UChar ch = text.charAt(t);
             if (ignorables == NULL || !ignorables->contains(ch)) {
                 break;
             }
         }
     }
     // if we get here, we've got a complete match.
     patternOffset = i - 1;
     textOffset = t;
     return TRUE;
 }
 //----------------------------------------------------------------------
 int32_t SimpleDateFormat::matchString(const UnicodeString& text,
                               int32_t start,
                               UCalendarDateFields field,
                               const UnicodeString* data,
                               int32_t dataCount,
                               const UnicodeString* monthPattern,
                               Calendar& cal) const
 {
     int32_t i = 0;
     int32_t count = dataCount;
     if (field == UCAL_DAY_OF_WEEK) i = 1;
     // There may be multiple strings in the data[] array which begin with
     // the same prefix (e.g., Cerven and Cervenec (June and July) in Czech).
     // We keep track of the longest match, and return that.  Note that this
     // unfortunately requires us to test all array elements.
     int32_t bestMatchLength = 0, bestMatch = -1;
     UnicodeString bestMatchName;
     int32_t isLeapMonth = 0;
     // {sfb} kludge to support case-insensitive comparison
     // {markus 2002oct11} do not just use caseCompareBetween because we do not know
     // the length of the match after case folding
     // {alan 20040607} don't case change the whole string, since the length
     // can change
     // TODO we need a case-insensitive startsWith function
     UnicodeString lcaseText;
     text.extract(start, INT32_MAX, lcaseText);
     lcaseText.foldCase();
     for (; i < count; ++i)
     {
         // Always compare if we have no match yet; otherwise only compare
         // against potentially better matches (longer strings).
         if (newBestMatchWithOptionalDot(lcaseText, data[i], bestMatchName, bestMatchLength)) {
             bestMatch = i;
             isLeapMonth = 0;
         }
         if (monthPattern != NULL) {
             UErrorCode status = U_ZERO_ERROR;
             UnicodeString leapMonthName;
             Formattable monthName((const UnicodeString&)(data[i]));
             MessageFormat::format(*monthPattern, &monthName, 1, leapMonthName, status);
             if (U_SUCCESS(status)) {
                 if (newBestMatchWithOptionalDot(lcaseText, leapMonthName, bestMatchName, bestMatchLength)) {
                     bestMatch = i;
                     isLeapMonth = 1;
                 }
             }
         }
     }
     if (bestMatch >= 0)
     {
         // Adjustment for Hebrew Calendar month Adar II
         if (!strcmp(cal.getType(),"hebrew") && field==UCAL_MONTH && bestMatch==13) {
             cal.set(field,6);
         }
         else {
             if (field == UCAL_YEAR) {
                 bestMatch++; // only get here for cyclic year names, which match 1-based years 1-60
             }
             cal.set(field, bestMatch);
         }
         if (monthPattern != NULL) {
             cal.set(UCAL_IS_LEAP_MONTH, isLeapMonth);
         }
         // Once we have a match, we have to determine the length of the
         // original source string.  This will usually be == the length of
         // the case folded string, but it may differ (e.g. sharp s).
         // Most of the time, the length will be the same as the length
         // of the string from the locale data.  Sometimes it will be
         // different, in which case we will have to figure it out by
         // adding a character at a time, until we have a match.  We do
         // this all in one loop, where we try 'len' first (at index
         // i==0).
         int32_t len = bestMatchName.length(); // 99+% of the time
         int32_t n = text.length() - start;
         for (i=0; i<=n; ++i) {
             int32_t j=i;
             if (i == 0) {
                 j = len;
             } else if (i == len) {
                 continue; // already tried this when i was 0
             }
             text.extract(start, j, lcaseText);
             lcaseText.foldCase();
             if (bestMatchName == lcaseText) {
                 return start + j;
             }
         }
     }
     return -start;
 }
 static UBool
 newBestMatchWithOptionalDot(const UnicodeString &lcaseText,
                             const UnicodeString &data,
                             UnicodeString &bestMatchName,
                             int32_t &bestMatchLength) {
     UnicodeString lcase;
     lcase.fastCopyFrom(data).foldCase();
     int32_t length = lcase.length();
     if (length <= bestMatchLength) {
         // data cannot provide a better match.
         return FALSE;
     }
     if (lcaseText.compareBetween(0, length, lcase, 0, length) == 0) {
         // normal match
         bestMatchName = lcase;
         bestMatchLength = length;
         return TRUE;
     }
     if (lcase.charAt(--length) == 0x2e) {
         if (lcaseText.compareBetween(0, length, lcase, 0, length) == 0) {
             // The input text matches the data except for data's trailing dot.
             bestMatchName = lcase;
             bestMatchName.truncate(length);
             bestMatchLength = length;
             return TRUE;
         }
     }
     return FALSE;
 }
 //----------------------------------------------------------------------
 void
 SimpleDateFormat::set2DigitYearStart(UDate d, UErrorCode& status)
 {
     parseAmbiguousDatesAsAfter(d, status);
 }
 /**
  * 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.
  * @return the new start position if matching succeeded; a negative number
  * indicating matching failure, otherwise.
  */
 int32_t SimpleDateFormat::subParse(const UnicodeString& text, int32_t& start, UChar ch, int32_t count,
                            UBool obeyCount, UBool allowNegative, UBool ambiguousYear[], int32_t& saveHebrewMonth, Calendar& cal,
                            int32_t patLoc, MessageFormat * numericLeapMonthFormatter) const
 {
     Formattable number;
     int32_t value = 0;
     int32_t i;
     int32_t ps = 0;
     UErrorCode status = U_ZERO_ERROR;
     ParsePosition pos(0);
     UDateFormatField patternCharIndex = DateFormatSymbols::getPatternCharIndex(ch);
     NumberFormat *currentNumberFormat;
     UnicodeString temp;
     UBool gotNumber = FALSE;
 #if defined (U_DEBUG_CAL)
     //fprintf(stderr, "%s:%d - [%c]  st=%d \n", __FILE__, __LINE__, (char) ch, start);
 #endif
     if (patternCharIndex == UDAT_FIELD_COUNT) {
         return -start;
     }
     currentNumberFormat = getNumberFormatByIndex(patternCharIndex);
     UCalendarDateFields field = fgPatternIndexToCalendarField[patternCharIndex];
     UnicodeString hebr("hebr", 4, US_INV);
     if (numericLeapMonthFormatter != NULL) {
         numericLeapMonthFormatter->setFormats((const Format **)&currentNumberFormat, 1);
     }
     UBool isChineseCalendar = (uprv_strcmp(cal.getType(),"chinese") == 0 || uprv_strcmp(cal.getType(),"dangi") == 0);
     // If there are any spaces here, skip over them.  If we hit the end
     // of the string, then fail.
     for (;;) {
         if (start >= text.length()) {
             return -start;
         }
         UChar32 c = text.char32At(start);
         if (!u_isUWhiteSpace(c) /*||*/ && !PatternProps::isWhiteSpace(c)) {
             break;
         }
         start += U16_LENGTH(c);
     }
     pos.setIndex(start);
     // We handle a few special cases here where we need to parse
     // a number value.  We handle further, more generic cases below.  We need
     // to handle some of them here because some fields require extra processing on
     // the parsed value.
     if (patternCharIndex == UDAT_HOUR_OF_DAY1_FIELD ||                       // k
         patternCharIndex == UDAT_HOUR_OF_DAY0_FIELD ||                       // H
         patternCharIndex == UDAT_HOUR1_FIELD ||                              // h
         patternCharIndex == UDAT_HOUR0_FIELD ||                              // K
         (patternCharIndex == UDAT_DOW_LOCAL_FIELD && count <= 2) ||          // e
         (patternCharIndex == UDAT_STANDALONE_DAY_FIELD && count <= 2) ||     // c
         (patternCharIndex == UDAT_MONTH_FIELD && count <= 2) ||              // M
         (patternCharIndex == UDAT_STANDALONE_MONTH_FIELD && count <= 2) ||   // L
         (patternCharIndex == UDAT_QUARTER_FIELD && count <= 2) ||            // Q
         (patternCharIndex == UDAT_STANDALONE_QUARTER_FIELD && count <= 2) || // q
         patternCharIndex == UDAT_YEAR_FIELD ||                               // y
         patternCharIndex == UDAT_YEAR_WOY_FIELD ||                           // Y
         patternCharIndex == UDAT_YEAR_NAME_FIELD ||                          // U (falls back to numeric)
         (patternCharIndex == UDAT_ERA_FIELD && isChineseCalendar) ||         // G
         patternCharIndex == UDAT_FRACTIONAL_SECOND_FIELD)                    // S
     {
         int32_t parseStart = pos.getIndex();
         // It would be good to unify this with the obeyCount logic below,
         // but that's going to be difficult.
         const UnicodeString* src;
         UBool parsedNumericLeapMonth = FALSE;
         if (numericLeapMonthFormatter != NULL && (patternCharIndex == UDAT_MONTH_FIELD || patternCharIndex == UDAT_STANDALONE_MONTH_FIELD)) {
             int32_t argCount;
             Formattable * args = numericLeapMonthFormatter->parse(text, pos, argCount);
             if (args != NULL && argCount == 1 && pos.getIndex() > parseStart && args[0].isNumeric()) {
                 parsedNumericLeapMonth = TRUE;
                 number.setLong(args[0].getLong());
                 cal.set(UCAL_IS_LEAP_MONTH, 1);
                 delete[] args;
             } else {
                 pos.setIndex(parseStart);
                 cal.set(UCAL_IS_LEAP_MONTH, 0);
             }
         }
         if (!parsedNumericLeapMonth) {
             if (obeyCount) {
                 if ((start+count) > text.length()) {
                     return -start;
                 }
                 text.extractBetween(0, start + count, temp);
                 src = &temp;
             } else {
                 src = &text;
             }
             parseInt(*src, number, pos, allowNegative,currentNumberFormat);
         }
         int32_t txtLoc = pos.getIndex();
         if (txtLoc > parseStart) {
             value = number.getLong();
             gotNumber = TRUE;
             // suffix processing
             if (value < 0 ) {
                 txtLoc = checkIntSuffix(text, txtLoc, patLoc+1, TRUE);
                 if (txtLoc != pos.getIndex()) {
                     value *= -1;
                 }
             }
             else {
                 txtLoc = checkIntSuffix(text, txtLoc, patLoc+1, FALSE);
             }
             if (!getBooleanAttribute(UDAT_PARSE_ALLOW_WHITESPACE, status)) {
                 // Check the range of the value
                 int32_t bias = gFieldRangeBias[patternCharIndex];
                 if (bias >= 0 && (value > cal.getMaximum(field) + bias || value < cal.getMinimum(field) + bias)) {
                     return -start;
                 }
             }
             pos.setIndex(txtLoc);
         }
     }
     // Make sure that we got a number if
     // we want one, and didn't get one
     // if we don't want one.
     switch (patternCharIndex) {
         case UDAT_HOUR_OF_DAY1_FIELD:
         case UDAT_HOUR_OF_DAY0_FIELD:
         case UDAT_HOUR1_FIELD:
         case UDAT_HOUR0_FIELD:
             // special range check for hours:
             if (value < 0 || value > 24) {
                 return -start;
             }
             // fall through to gotNumber check
         case UDAT_YEAR_FIELD:
         case UDAT_YEAR_WOY_FIELD:
         case UDAT_FRACTIONAL_SECOND_FIELD:
             // these must be a number
             if (! gotNumber) {
                 return -start;
             }
             break;
         default:
             // we check the rest of the fields below.
             break;
     }
     switch (patternCharIndex) {
     case UDAT_ERA_FIELD:
         if (isChineseCalendar) {
             if (!gotNumber) {
                 return -start;
             }
             cal.set(UCAL_ERA, value);
             return pos.getIndex();
         }
         if (count == 5) {
             ps = matchString(text, start, UCAL_ERA, fSymbols->fNarrowEras, fSymbols->fNarrowErasCount, NULL, cal);
         } else if (count == 4) {
             ps = matchString(text, start, UCAL_ERA, fSymbols->fEraNames, fSymbols->fEraNamesCount, NULL, cal);
         } else {
             ps = matchString(text, start, UCAL_ERA, fSymbols->fEras, fSymbols->fErasCount, NULL, cal);
         }
         // check return position, if it equals -start, then matchString error
         // special case the return code so we don't necessarily fail out until we
         // verify no year information also
         if (ps == -start)
             ps--;
         return ps;
     case UDAT_YEAR_FIELD:
         // If there are 3 or more YEAR pattern characters, this indicates
         // that the year value is to be treated literally, without any
         // two-digit year adjustments (e.g., from "01" to 2001).  Otherwise
         // we made adjustments to place the 2-digit year in the proper
         // century, for parsed strings from "00" to "99".  Any other string
         // is treated literally:  "2250", "-1", "1", "002".
         if (fDateOverride.compare(hebr)==0 && value < 1000) {
             value += HEBREW_CAL_CUR_MILLENIUM_START_YEAR;
         } else if ((pos.getIndex() - start) == 2 && !isChineseCalendar
             && u_isdigit(text.charAt(start))
             && u_isdigit(text.charAt(start+1)))
         {
         	// only adjust year for patterns less than 3.
         	if(count < 3) {
         		// Assume for example that the defaultCenturyStart is 6/18/1903.
         		// This means that two-digit years will be forced into the range
         		// 6/18/1903 to 6/17/2003.  As a result, years 00, 01, and 02
         		// correspond to 2000, 2001, and 2002.  Years 04, 05, etc. correspond
         		// to 1904, 1905, etc.  If the year is 03, then it is 2003 if the
         		// other fields specify a date before 6/18, or 1903 if they specify a
         		// date afterwards.  As a result, 03 is an ambiguous year.  All other
         		// two-digit years are unambiguous.
         		if(fHaveDefaultCentury) { // check if this formatter even has a pivot year
         			int32_t ambiguousTwoDigitYear = fDefaultCenturyStartYear % 100;
         			ambiguousYear[0] = (value == ambiguousTwoDigitYear);
         			value += (fDefaultCenturyStartYear/100)*100 +
         					(value < ambiguousTwoDigitYear ? 100 : 0);
         		}
             }
         }
         cal.set(UCAL_YEAR, value);
         // Delayed checking for adjustment of Hebrew month numbers in non-leap years.
         if (saveHebrewMonth >= 0) {
             HebrewCalendar *hc = (HebrewCalendar*)&cal;
             if (!hc->isLeapYear(value) && saveHebrewMonth >= 6) {
                cal.set(UCAL_MONTH,saveHebrewMonth);
             } else {
                cal.set(UCAL_MONTH,saveHebrewMonth-1);
             }
             saveHebrewMonth = -1;
         }
         return pos.getIndex();
     case UDAT_YEAR_WOY_FIELD:
         // Comment is the same as for UDAT_Year_FIELDs - look above
         if (fDateOverride.compare(hebr)==0 && value < 1000) {
             value += HEBREW_CAL_CUR_MILLENIUM_START_YEAR;
         } else if ((pos.getIndex() - start) == 2
             && u_isdigit(text.charAt(start))
             && u_isdigit(text.charAt(start+1))
             && fHaveDefaultCentury )
         {
             int32_t ambiguousTwoDigitYear = fDefaultCenturyStartYear % 100;
             ambiguousYear[0] = (value == ambiguousTwoDigitYear);
             value += (fDefaultCenturyStartYear/100)*100 +
                 (value < ambiguousTwoDigitYear ? 100 : 0);
         }
         cal.set(UCAL_YEAR_WOY, value);
         return pos.getIndex();
     case UDAT_YEAR_NAME_FIELD:
         if (fSymbols->fShortYearNames != NULL) {
             int32_t newStart = matchString(text, start, UCAL_YEAR, fSymbols->fShortYearNames, fSymbols->fShortYearNamesCount, NULL, cal);
             if (newStart > 0) {
                 return newStart;
             }
         }
         if (gotNumber && (getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC,status) || value > fSymbols->fShortYearNamesCount)) {
             cal.set(UCAL_YEAR, value);
             return pos.getIndex();
         }
         return -start;
     case UDAT_MONTH_FIELD:
     case UDAT_STANDALONE_MONTH_FIELD:
         if (gotNumber) // i.e., M or MM.
         {
             // When parsing month numbers from the Hebrew Calendar, we might need to adjust the month depending on whether
             // or not it was a leap year.  We may or may not yet know what year it is, so might have to delay checking until
             // the year is parsed.
             if (!strcmp(cal.getType(),"hebrew")) {
                 HebrewCalendar *hc = (HebrewCalendar*)&cal;
                 if (cal.isSet(UCAL_YEAR)) {
                    UErrorCode status = U_ZERO_ERROR;
                    if (!hc->isLeapYear(hc->get(UCAL_YEAR,status)) && value >= 6) {
                        cal.set(UCAL_MONTH, value);
                    } else {
                        cal.set(UCAL_MONTH, value - 1);
                    }
                 } else {
                     saveHebrewMonth = value;
                 }
             } else {
                 // Don't want to parse the month if it is a string
                 // while pattern uses numeric style: M/MM, L/LL
                 // [We computed 'value' above.]
                 cal.set(UCAL_MONTH, value - 1);
             }
             return pos.getIndex();
         } else {
             // count >= 3 // i.e., MMM/MMMM, LLL/LLLL
             // Want to be able to parse both short and long forms.
             // Try count == 4 first:
             UnicodeString * wideMonthPat = NULL;
             UnicodeString * shortMonthPat = NULL;
             if (fSymbols->fLeapMonthPatterns != NULL && fSymbols->fLeapMonthPatternsCount >= DateFormatSymbols::kMonthPatternsCount) {
                 if (patternCharIndex==UDAT_MONTH_FIELD) {
                     wideMonthPat = &fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatWide];
                     shortMonthPat = &fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternFormatAbbrev];
                 } else {
                     wideMonthPat = &fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneWide];
                     shortMonthPat = &fSymbols->fLeapMonthPatterns[DateFormatSymbols::kLeapMonthPatternStandaloneAbbrev];
                 }
             }
             int32_t newStart = 0;
             if (patternCharIndex==UDAT_MONTH_FIELD) {
                 newStart = matchString(text, start, UCAL_MONTH, fSymbols->fMonths, fSymbols->fMonthsCount, wideMonthPat, cal); // try MMMM
                 if (newStart > 0) {
                     return newStart;
                 }
                 newStart = matchString(text, start, UCAL_MONTH, fSymbols->fShortMonths, fSymbols->fShortMonthsCount, shortMonthPat, cal); // try MMM
             } else {
                 newStart = matchString(text, start, UCAL_MONTH, fSymbols->fStandaloneMonths, fSymbols->fStandaloneMonthsCount, wideMonthPat, cal); // try LLLL
                 if (newStart > 0) {
                     return newStart;
                 }
                 newStart = matchString(text, start, UCAL_MONTH, fSymbols->fStandaloneShortMonths, fSymbols->fStandaloneShortMonthsCount, shortMonthPat, cal); // try LLL
             }
             if (newStart > 0 || !getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status))  // currently we do not try to parse MMMMM/LLLLL: #8860
                 return newStart;
             // else we allowing parsing as number, below
         }
         break;
     case UDAT_HOUR_OF_DAY1_FIELD:
         // [We computed 'value' above.]
         if (value == cal.getMaximum(UCAL_HOUR_OF_DAY) + 1)
             value = 0;
         // fall through to set field
     case UDAT_HOUR_OF_DAY0_FIELD:
         cal.set(UCAL_HOUR_OF_DAY, value);
         return pos.getIndex();
     case UDAT_FRACTIONAL_SECOND_FIELD:
         // Fractional seconds left-justify
         i = pos.getIndex() - start;
         if (i < 3) {
             while (i < 3) {
                 value *= 10;
                 i++;
             }
         } else {
             int32_t a = 1;
             while (i > 3) {
                 a *= 10;
                 i--;
             }
             value /= a;
         }
         cal.set(UCAL_MILLISECOND, value);
         return pos.getIndex();
     case UDAT_DOW_LOCAL_FIELD:
         if (gotNumber) // i.e., e or ee
         {
             // [We computed 'value' above.]
             cal.set(UCAL_DOW_LOCAL, value);
             return pos.getIndex();
         }
         // else for eee-eeeee fall through to handling of EEE-EEEEE
         // fall through, do not break here
     case UDAT_DAY_OF_WEEK_FIELD:
         {
             // Want to be able to parse both short and long forms.
             // Try count == 4 (EEEE) wide first:
             int32_t newStart = 0;
             if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
                                       fSymbols->fWeekdays, fSymbols->fWeekdaysCount, NULL, cal)) > 0)
                 return newStart;
             // EEEE wide failed, now try EEE abbreviated
             else if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
                                    fSymbols->fShortWeekdays, fSymbols->fShortWeekdaysCount, NULL, cal)) > 0)
                 return newStart;
             // EEE abbreviated failed, now try EEEEEE short
             else if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
                                    fSymbols->fShorterWeekdays, fSymbols->fShorterWeekdaysCount, NULL, cal)) > 0)
                 return newStart;
             // EEEEEE short failed, now try EEEEE narrow
             else if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
                                    fSymbols->fNarrowWeekdays, fSymbols->fNarrowWeekdaysCount, NULL, cal)) > 0)
                 return newStart;
             else if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status) || patternCharIndex == UDAT_DAY_OF_WEEK_FIELD)
                 return newStart;
             // else we allowing parsing as number, below
         }
         break;
     case UDAT_STANDALONE_DAY_FIELD:
         {
             if (gotNumber) // c or cc
             {
                 // [We computed 'value' above.]
                 cal.set(UCAL_DOW_LOCAL, value);
                 return pos.getIndex();
             }
             // Want to be able to parse both short and long forms.
             // Try count == 4 (cccc) first:
             int32_t newStart = 0;
             if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
                                       fSymbols->fStandaloneWeekdays, fSymbols->fStandaloneWeekdaysCount, NULL, cal)) > 0)
                 return newStart;
             else if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
                                           fSymbols->fStandaloneShortWeekdays, fSymbols->fStandaloneShortWeekdaysCount, NULL, cal)) > 0)
                 return newStart;
             else if ((newStart = matchString(text, start, UCAL_DAY_OF_WEEK,
                                           fSymbols->fStandaloneShorterWeekdays, fSymbols->fStandaloneShorterWeekdaysCount, NULL, cal)) > 0)
                 return newStart;
             else if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status))
                 return newStart;
             // else we allowing parsing as number, below
         }
         break;
     case UDAT_AM_PM_FIELD:
         return matchString(text, start, UCAL_AM_PM, fSymbols->fAmPms, fSymbols->fAmPmsCount, NULL, cal);
     case UDAT_HOUR1_FIELD:
         // [We computed 'value' above.]
         if (value == cal.getLeastMaximum(UCAL_HOUR)+1)
             value = 0;
         // fall through to set field
     case UDAT_HOUR0_FIELD:
         cal.set(UCAL_HOUR, value);
         return pos.getIndex();
     case UDAT_QUARTER_FIELD:
         if (gotNumber) // i.e., Q or QQ.
         {
             // Don't want to parse the month if it is a string
             // while pattern uses numeric style: Q or QQ.
             // [We computed 'value' above.]
             cal.set(UCAL_MONTH, (value - 1) * 3);
             return pos.getIndex();
         } else {
             // count >= 3 // i.e., QQQ or QQQQ
             // Want to be able to parse both short and long forms.
             // Try count == 4 first:
             int32_t newStart = 0;
             if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
                                       fSymbols->fQuarters, fSymbols->fQuartersCount, cal)) > 0)
                 return newStart;
             else if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
                                           fSymbols->fShortQuarters, fSymbols->fShortQuartersCount, cal)) > 0)
                 return newStart;
             else if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status))
                 return newStart;
             // else we allowing parsing as number, below
         }
         break;
     case UDAT_STANDALONE_QUARTER_FIELD:
         if (gotNumber) // i.e., q or qq.
         {
             // Don't want to parse the month if it is a string
             // while pattern uses numeric style: q or q.
             // [We computed 'value' above.]
             cal.set(UCAL_MONTH, (value - 1) * 3);
             return pos.getIndex();
         } else {
             // count >= 3 // i.e., qqq or qqqq
             // Want to be able to parse both short and long forms.
             // Try count == 4 first:
             int32_t newStart = 0;
             if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
                                       fSymbols->fStandaloneQuarters, fSymbols->fStandaloneQuartersCount, cal)) > 0)
                 return newStart;
             else if ((newStart = matchQuarterString(text, start, UCAL_MONTH,
                                           fSymbols->fStandaloneShortQuarters, fSymbols->fStandaloneShortQuartersCount, cal)) > 0)
                 return newStart;
             else if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status))
                 return newStart;
             // else we allowing parsing as number, below
         }
         break;
     case UDAT_TIMEZONE_FIELD: // 'z'
         {
             UTimeZoneFormatTimeType tzTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
             UTimeZoneFormatStyle style = (count < 4) ? UTZFMT_STYLE_SPECIFIC_SHORT : UTZFMT_STYLE_SPECIFIC_LONG;
             TimeZone *tz  = tzFormat()->parse(style, text, pos, &tzTimeType);
             if (tz != NULL) {
                 ((SimpleDateFormat*)this)->tztype = tzTimeType;
                 cal.adoptTimeZone(tz);
                 return pos.getIndex();
             }
         }
         break;
     case UDAT_TIMEZONE_RFC_FIELD: // 'Z'
         {
             UTimeZoneFormatTimeType tzTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
             UTimeZoneFormatStyle style = (count < 4) ?
                 UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL : ((count == 5) ? UTZFMT_STYLE_ISO_EXTENDED_FULL: UTZFMT_STYLE_LOCALIZED_GMT);
             TimeZone *tz  = tzFormat()->parse(style, text, pos, &tzTimeType);
             if (tz != NULL) {
                 ((SimpleDateFormat*)this)->tztype = tzTimeType;
                 cal.adoptTimeZone(tz);
                 return pos.getIndex();
             }
             return -start;
         }
     case UDAT_TIMEZONE_GENERIC_FIELD: // 'v'
         {
             UTimeZoneFormatTimeType tzTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
             UTimeZoneFormatStyle style = (count < 4) ? UTZFMT_STYLE_GENERIC_SHORT : UTZFMT_STYLE_GENERIC_LONG;
             TimeZone *tz  = tzFormat()->parse(style, text, pos, &tzTimeType);
             if (tz != NULL) {
                 ((SimpleDateFormat*)this)->tztype = tzTimeType;
                 cal.adoptTimeZone(tz);
                 return pos.getIndex();
             }
             return -start;
         }
     case UDAT_TIMEZONE_SPECIAL_FIELD: // 'V'
         {
             UTimeZoneFormatTimeType tzTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
             UTimeZoneFormatStyle style;
             switch (count) {
             case 1:
                 style = UTZFMT_STYLE_ZONE_ID_SHORT;
                 break;
             case 2:
                 style = UTZFMT_STYLE_ZONE_ID;
                 break;
             case 3:
                 style = UTZFMT_STYLE_EXEMPLAR_LOCATION;
                 break;
             default:
                 style = UTZFMT_STYLE_GENERIC_LOCATION;
                 break;
             }
             TimeZone *tz  = tzFormat()->parse(style, text, pos, &tzTimeType);
             if (tz != NULL) {
                 ((SimpleDateFormat*)this)->tztype = tzTimeType;
                 cal.adoptTimeZone(tz);
                 return pos.getIndex();
             }
             return -start;
         }
     case UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD: // 'O'
         {
             UTimeZoneFormatTimeType tzTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
             UTimeZoneFormatStyle style = (count < 4) ? UTZFMT_STYLE_LOCALIZED_GMT_SHORT : UTZFMT_STYLE_LOCALIZED_GMT;
             TimeZone *tz  = tzFormat()->parse(style, text, pos, &tzTimeType);
             if (tz != NULL) {
                 ((SimpleDateFormat*)this)->tztype = tzTimeType;
                 cal.adoptTimeZone(tz);
                 return pos.getIndex();
             }
             return -start;
         }
     case UDAT_TIMEZONE_ISO_FIELD: // 'X'
         {
             UTimeZoneFormatTimeType tzTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
             UTimeZoneFormatStyle style;
             switch (count) {
             case 1:
                 style = UTZFMT_STYLE_ISO_BASIC_SHORT;
                 break;
             case 2:
                 style = UTZFMT_STYLE_ISO_BASIC_FIXED;
                 break;
             case 3:
                 style = UTZFMT_STYLE_ISO_EXTENDED_FIXED;
                 break;
             case 4:
                 style = UTZFMT_STYLE_ISO_BASIC_FULL;
                 break;
             default:
                 style = UTZFMT_STYLE_ISO_EXTENDED_FULL;
                 break;
             }
             TimeZone *tz  = tzFormat()->parse(style, text, pos, &tzTimeType);
             if (tz != NULL) {
                 ((SimpleDateFormat*)this)->tztype = tzTimeType;
                 cal.adoptTimeZone(tz);
                 return pos.getIndex();
             }
             return -start;
         }
     case UDAT_TIMEZONE_ISO_LOCAL_FIELD: // 'x'
         {
             UTimeZoneFormatTimeType tzTimeType = UTZFMT_TIME_TYPE_UNKNOWN;
             UTimeZoneFormatStyle style;
             switch (count) {
             case 1:
                 style = UTZFMT_STYLE_ISO_BASIC_LOCAL_SHORT;
                 break;
             case 2:
                 style = UTZFMT_STYLE_ISO_BASIC_LOCAL_FIXED;
                 break;
             case 3:
                 style = UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FIXED;
                 break;
             case 4:
                 style = UTZFMT_STYLE_ISO_BASIC_LOCAL_FULL;
                 break;
             default:
                 style = UTZFMT_STYLE_ISO_EXTENDED_LOCAL_FULL;
                 break;
             }
             TimeZone *tz  = tzFormat()->parse(style, text, pos, &tzTimeType);
             if (tz != NULL) {
                 ((SimpleDateFormat*)this)->tztype = tzTimeType;
                 cal.adoptTimeZone(tz);
                 return pos.getIndex();
             }
             return -start;
         }
     default:
         // Handle "generic" fields
         // this is now handled below, outside the switch block
         break;
     }
     // Handle "generic" fields:
     // switch default case now handled here (outside switch block) to allow
     // parsing of some string fields as digits for lenient case
     int32_t parseStart = pos.getIndex();
     const UnicodeString* src;
     if (obeyCount) {
         if ((start+count) > text.length()) {
             return -start;
         }
         text.extractBetween(0, start + count, temp);
         src = &temp;
     } else {
         src = &text;
     }
     parseInt(*src, number, pos, allowNegative,currentNumberFormat);
     if (pos.getIndex() != parseStart) {
         int32_t value = number.getLong();
         // Don't need suffix processing here (as in number processing at the beginning of the function);
         // the new fields being handled as numeric values (month, weekdays, quarters) should not have suffixes.
         if (!getBooleanAttribute(UDAT_PARSE_ALLOW_NUMERIC, status)) {
             // Check the range of the value
             int32_t bias = gFieldRangeBias[patternCharIndex];
             if (bias >= 0 && (value > cal.getMaximum(field) + bias || value < cal.getMinimum(field) + bias)) {
                 return -start;
             }
         }
         // For the following, need to repeat some of the "if (gotNumber)" code above:
         // UDAT_[STANDALONE_]MONTH_FIELD, UDAT_DOW_LOCAL_FIELD, UDAT_STANDALONE_DAY_FIELD,
         // UDAT_[STANDALONE_]QUARTER_FIELD
         switch (patternCharIndex) {
         case UDAT_MONTH_FIELD:
             // See notes under UDAT_MONTH_FIELD case above
             if (!strcmp(cal.getType(),"hebrew")) {
                 HebrewCalendar *hc = (HebrewCalendar*)&cal;
                 if (cal.isSet(UCAL_YEAR)) {
                    UErrorCode status = U_ZERO_ERROR;
                    if (!hc->isLeapYear(hc->get(UCAL_YEAR,status)) && value >= 6) {
                        cal.set(UCAL_MONTH, value);
                    } else {
                        cal.set(UCAL_MONTH, value - 1);
                    }
                 } else {
                     saveHebrewMonth = value;
                 }
             } else {
                 cal.set(UCAL_MONTH, value - 1);
             }
             break;
         case UDAT_STANDALONE_MONTH_FIELD:
             cal.set(UCAL_MONTH, value - 1);
             break;
         case UDAT_DOW_LOCAL_FIELD:
         case UDAT_STANDALONE_DAY_FIELD:
             cal.set(UCAL_DOW_LOCAL, value);
             break;
         case UDAT_QUARTER_FIELD:
         case UDAT_STANDALONE_QUARTER_FIELD:
              cal.set(UCAL_MONTH, (value - 1) * 3);
              break;
         default:
             cal.set(field, value);
             break;
         }
         return pos.getIndex();
     }
     return -start;
 }
 /**
  * Parse an integer using fNumberFormat.  This method is semantically
  * const, but actually may modify fNumberFormat.
  */
 void SimpleDateFormat::parseInt(const UnicodeString& text,
                                 Formattable& number,
                                 ParsePosition& pos,
                                 UBool allowNegative,
                                 NumberFormat *fmt) const {
     parseInt(text, number, -1, pos, allowNegative,fmt);
 }
 /**
  * Parse an integer using fNumberFormat up to maxDigits.
  */
 void SimpleDateFormat::parseInt(const UnicodeString& text,
                                 Formattable& number,
                                 int32_t maxDigits,
                                 ParsePosition& pos,
                                 UBool allowNegative,
                                 NumberFormat *fmt) const {
     UnicodeString oldPrefix;
     DecimalFormat* df = NULL;
     if (!allowNegative && (df = dynamic_cast<DecimalFormat*>(fmt)) != NULL) {
         df->getNegativePrefix(oldPrefix);
         df->setNegativePrefix(UnicodeString(TRUE, SUPPRESS_NEGATIVE_PREFIX, -1));
     }
     int32_t oldPos = pos.getIndex();
     fmt->parse(text, number, pos);
     if (df != NULL) {
         df->setNegativePrefix(oldPrefix);
     }
     if (maxDigits > 0) {
         // adjust the result to fit into
         // the maxDigits and move the position back
         int32_t nDigits = pos.getIndex() - oldPos;
         if (nDigits > maxDigits) {
             int32_t val = number.getLong();
             nDigits -= maxDigits;
             while (nDigits > 0) {
                 val /= 10;
                 nDigits--;
             }
             pos.setIndex(oldPos + maxDigits);
             number.setLong(val);
         }
     }
 }
 //----------------------------------------------------------------------
 void SimpleDateFormat::translatePattern(const UnicodeString& originalPattern,
                                         UnicodeString& translatedPattern,
                                         const UnicodeString& from,
                                         const UnicodeString& to,
                                         UErrorCode& status)
 {
   // run through the pattern and convert any pattern symbols from the version
   // in "from" to the corresponding character ion "to".  This code takes
   // quoted strings into account (it doesn't try to translate them), and it signals
   // an error if a particular "pattern character" doesn't appear in "from".
   // Depending on the values of "from" and "to" this can convert from generic
   // to localized patterns or localized to generic.
   if (U_FAILURE(status))
     return;
   translatedPattern.remove();
   UBool inQuote = FALSE;
   for (int32_t i = 0; i < originalPattern.length(); ++i) {
     UChar c = originalPattern[i];
     if (inQuote) {
       if (c == QUOTE)
     inQuote = FALSE;
     }
     else {
       if (c == QUOTE)
     inQuote = TRUE;
       else if ((c >= 0x0061 /*'a'*/ && c <= 0x007A) /*'z'*/
            || (c >= 0x0041 /*'A'*/ && c <= 0x005A /*'Z'*/)) {
     int32_t ci = from.indexOf(c);
     if (ci == -1) {
       status = U_INVALID_FORMAT_ERROR;
       return;
     }
     c = to[ci];
       }
     }
     translatedPattern += c;
   }
   if (inQuote) {
     status = U_INVALID_FORMAT_ERROR;
     return;
   }
 }
 //----------------------------------------------------------------------
 UnicodeString&
 SimpleDateFormat::toPattern(UnicodeString& result) const
 {
     result = fPattern;
     return result;
 }
 //----------------------------------------------------------------------
 UnicodeString&
 SimpleDateFormat::toLocalizedPattern(UnicodeString& result,
                                      UErrorCode& status) const
 {
     translatePattern(fPattern, result,
                      UnicodeString(DateFormatSymbols::getPatternUChars()),
                      fSymbols->fLocalPatternChars, status);
     return result;
 }
 //----------------------------------------------------------------------
 void
 SimpleDateFormat::applyPattern(const UnicodeString& pattern)
 {
     fPattern = pattern;
 }
 //----------------------------------------------------------------------
 void
 SimpleDateFormat::applyLocalizedPattern(const UnicodeString& pattern,
                                         UErrorCode &status)
 {
     translatePattern(pattern, fPattern,
                      fSymbols->fLocalPatternChars,
                      UnicodeString(DateFormatSymbols::getPatternUChars()), status);
 }
 //----------------------------------------------------------------------
 const DateFormatSymbols*
 SimpleDateFormat::getDateFormatSymbols() const
 {
     return fSymbols;
 }
 //----------------------------------------------------------------------
 void
 SimpleDateFormat::adoptDateFormatSymbols(DateFormatSymbols* newFormatSymbols)
 {
     delete fSymbols;
     fSymbols = newFormatSymbols;
 }
 //----------------------------------------------------------------------
 void
 SimpleDateFormat::setDateFormatSymbols(const DateFormatSymbols& newFormatSymbols)
 {
     delete fSymbols;
     fSymbols = new DateFormatSymbols(newFormatSymbols);
 }
 //----------------------------------------------------------------------
 const TimeZoneFormat*
 SimpleDateFormat::getTimeZoneFormat(void) const {
     return (const TimeZoneFormat*)tzFormat();
 }
 //----------------------------------------------------------------------
 void
 SimpleDateFormat::adoptTimeZoneFormat(TimeZoneFormat* timeZoneFormatToAdopt)
 {
     delete fTimeZoneFormat;
     fTimeZoneFormat = timeZoneFormatToAdopt;
 }
 //----------------------------------------------------------------------
 void
 SimpleDateFormat::setTimeZoneFormat(const TimeZoneFormat& newTimeZoneFormat)
 {
     delete fTimeZoneFormat;
     fTimeZoneFormat = new TimeZoneFormat(newTimeZoneFormat);
 }
 //----------------------------------------------------------------------
 void SimpleDateFormat::adoptCalendar(Calendar* calendarToAdopt)
 {
   UErrorCode status = U_ZERO_ERROR;
   DateFormat::adoptCalendar(calendarToAdopt);
   delete fSymbols;
   fSymbols=NULL;
   initializeSymbols(fLocale, fCalendar, status);  // we need new symbols
   initializeDefaultCentury();  // we need a new century (possibly)
 }
 //----------------------------------------------------------------------
 void SimpleDateFormat::setContext(UDisplayContext value, UErrorCode& status)
 {
     if (U_FAILURE(status))
         return;
     if ( (UDisplayContextType)((uint32_t)value >> 8) == UDISPCTX_TYPE_CAPITALIZATION ) {
         fCapitalizationContext = value;
     } else {
         status = U_ILLEGAL_ARGUMENT_ERROR;
    }
 }
 //----------------------------------------------------------------------
 UDisplayContext SimpleDateFormat::getContext(UDisplayContextType type, UErrorCode& status) const
 {
     if (U_FAILURE(status))
         return (UDisplayContext)0;
     if (type != UDISPCTX_TYPE_CAPITALIZATION) {
         status = U_ILLEGAL_ARGUMENT_ERROR;
         return (UDisplayContext)0;
     }
     return fCapitalizationContext;
 }
 //----------------------------------------------------------------------
 UBool
 SimpleDateFormat::isFieldUnitIgnored(UCalendarDateFields field) const {
     return isFieldUnitIgnored(fPattern, field);
 }
 UBool
 SimpleDateFormat::isFieldUnitIgnored(const UnicodeString& pattern,
                                      UCalendarDateFields field) {
     int32_t fieldLevel = fgCalendarFieldToLevel[field];
     int32_t level;
     UChar ch;
     UBool inQuote = FALSE;
     UChar prevCh = 0;
     int32_t count = 0;
     for (int32_t i = 0; i < pattern.length(); ++i) {
         ch = pattern[i];
         if (ch != prevCh && count > 0) {
             level = fgPatternCharToLevel[prevCh - PATTERN_CHAR_BASE];
             // the larger the level, the smaller the field unit.
             if ( fieldLevel <= level ) {
                 return FALSE;
             }
             count = 0;
         }
         if (ch == QUOTE) {
             if ((i+1) < pattern.length() && pattern[i+1] == QUOTE) {
                 ++i;
             } else {
                 inQuote = ! inQuote;
             }
         }
         else if ( ! inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/)
                     || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) {
             prevCh = ch;
             ++count;
         }
     }
     if ( count > 0 ) {
         // last item
         level = fgPatternCharToLevel[prevCh - PATTERN_CHAR_BASE];
             if ( fieldLevel <= level ) {
                 return FALSE;
             }
     }
     return TRUE;
 }
 //----------------------------------------------------------------------
 const Locale&
 SimpleDateFormat::getSmpFmtLocale(void) const {
     return fLocale;
 }
 //----------------------------------------------------------------------
 int32_t
 SimpleDateFormat::checkIntSuffix(const UnicodeString& text, int32_t start,
                                  int32_t patLoc, UBool isNegative) const {
     // local variables
     UnicodeString suf;
     int32_t patternMatch;
     int32_t textPreMatch;
     int32_t textPostMatch;
     // check that we are still in range
     if ( (start > text.length()) ||
          (start < 0) ||
          (patLoc < 0) ||
          (patLoc > fPattern.length())) {
         // out of range, don't advance location in text
         return start;
     }
     // get the suffix
     DecimalFormat* decfmt = dynamic_cast<DecimalFormat*>(fNumberFormat);
     if (decfmt != NULL) {
         if (isNegative) {
             suf = decfmt->getNegativeSuffix(suf);
         }
         else {
             suf = decfmt->getPositiveSuffix(suf);
         }
     }
     // check for suffix
     if (suf.length() <= 0) {
         return start;
     }
     // check suffix will be encountered in the pattern
     patternMatch = compareSimpleAffix(suf,fPattern,patLoc);
     // check if a suffix will be encountered in the text
     textPreMatch = compareSimpleAffix(suf,text,start);
     // check if a suffix was encountered in the text
     textPostMatch = compareSimpleAffix(suf,text,start-suf.length());
     // check for suffix match
     if ((textPreMatch >= 0) && (patternMatch >= 0) && (textPreMatch == patternMatch)) {
         return start;
     }
     else if ((textPostMatch >= 0) && (patternMatch >= 0) && (textPostMatch == patternMatch)) {
         return  start - suf.length();
     }
     // should not get here
     return start;
 }
 //----------------------------------------------------------------------
 int32_t
 SimpleDateFormat::compareSimpleAffix(const UnicodeString& affix,
                    const UnicodeString& input,
                    int32_t pos) const {
     int32_t start = pos;
     for (int32_t i=0; i<affix.length(); ) {
         UChar32 c = affix.char32At(i);
         int32_t len = U16_LENGTH(c);
         if (PatternProps::isWhiteSpace(c)) {
             // We may have a pattern like: \u200F \u0020
             //        and input text like: \u200F \u0020
             // Note that U+200F and U+0020 are Pattern_White_Space but only
             // U+0020 is UWhiteSpace.  So we have to first do a direct
             // match of the run of Pattern_White_Space in the pattern,
             // then match any extra characters.
             UBool literalMatch = FALSE;
             while (pos < input.length() &&
                    input.char32At(pos) == c) {
                 literalMatch = TRUE;
                 i += len;
                 pos += len;
                 if (i == affix.length()) {
                     break;
                 }
                 c = affix.char32At(i);
                 len = U16_LENGTH(c);
                 if (!PatternProps::isWhiteSpace(c)) {
                     break;
                 }
             }
             // Advance over run in pattern
             i = skipPatternWhiteSpace(affix, i);
             // Advance over run in input text
             // Must see at least one white space char in input,
             // unless we've already matched some characters literally.
             int32_t s = pos;
             pos = skipUWhiteSpace(input, pos);
             if (pos == s && !literalMatch) {
                 return -1;
             }
             // If we skip UWhiteSpace in the input text, we need to skip it in the pattern.
             // Otherwise, the previous lines may have skipped over text (such as U+00A0) that
             // is also in the affix.
             i = skipUWhiteSpace(affix, i);
         } else {
             if (pos < input.length() &&
                 input.char32At(pos) == c) {
                 i += len;
                 pos += len;
             } else {
                 return -1;
             }
         }
     }
     return pos - start;
 }
 //----------------------------------------------------------------------
 int32_t
 SimpleDateFormat::skipPatternWhiteSpace(const UnicodeString& text, int32_t pos) const {
     const UChar* s = text.getBuffer();
     return (int32_t)(PatternProps::skipWhiteSpace(s + pos, text.length() - pos) - s);
 }
 //----------------------------------------------------------------------
 int32_t
 SimpleDateFormat::skipUWhiteSpace(const UnicodeString& text, int32_t pos) const {
     while (pos < text.length()) {
         UChar32 c = text.char32At(pos);
         if (!u_isUWhiteSpace(c)) {
             break;
         }
         pos += U16_LENGTH(c);
     }
     return pos;
 }
 //----------------------------------------------------------------------
 // Lazy TimeZoneFormat instantiation, semantically const.
 TimeZoneFormat *
 SimpleDateFormat::tzFormat() const {
     if (fTimeZoneFormat == NULL) {
         umtx_lock(&LOCK);
         {
             if (fTimeZoneFormat == NULL) {
                 UErrorCode status = U_ZERO_ERROR;
                 TimeZoneFormat *tzfmt = TimeZoneFormat::createInstance(fLocale, status);
                 if (U_FAILURE(status)) {
                     return NULL;
                 }
                 const_cast<SimpleDateFormat *>(this)->fTimeZoneFormat = tzfmt;
             }
         }
         umtx_unlock(&LOCK);
     }
     return fTimeZoneFormat;
 }
 U_NAMESPACE_END
 #endif /* #if !UCONFIG_NO_FORMATTING */
 //eof

The Tor Browser / annotate

intl/icu/source/i18n/smpdtfmt.cpp@6474c204b198 (annotated)

intl/icu/source/i18n/smpdtfmt.cpp