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      1 /*******************************************************************************
      2 * Copyright (C) 2008-2012, International Business Machines Corporation and
      3 * others. All Rights Reserved.
      4 *******************************************************************************
      5 *
      6 * File DTITVINF.CPP
      7 *
      8 *******************************************************************************
      9 */
     10 
     11 #include "unicode/dtitvinf.h"
     12 
     13 
     14 #if !UCONFIG_NO_FORMATTING
     15 
     16 //TODO: define it in compiler time
     17 //#define DTITVINF_DEBUG 1
     18 
     19 
     20 #ifdef DTITVINF_DEBUG
     21 #include <iostream>
     22 #endif
     23 
     24 #include "cstring.h"
     25 #include "unicode/msgfmt.h"
     26 #include "unicode/uloc.h"
     27 #include "unicode/ures.h"
     28 #include "dtitv_impl.h"
     29 #include "hash.h"
     30 #include "gregoimp.h"
     31 #include "uresimp.h"
     32 #include "hash.h"
     33 #include "gregoimp.h"
     34 #include "uresimp.h"
     35 
     36 
     37 U_NAMESPACE_BEGIN
     38 
     39 
     40 #ifdef DTITVINF_DEBUG
     41 #define PRINTMESG(msg) { std::cout << "(" << __FILE__ << ":" << __LINE__ << ") " << msg << "\n"; }
     42 #endif
     43 
     44 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(DateIntervalInfo)
     45 
     46 static const char gCalendarTag[]="calendar";
     47 static const char gGregorianTag[]="gregorian";
     48 static const char gIntervalDateTimePatternTag[]="intervalFormats";
     49 static const char gFallbackPatternTag[]="fallback";
     50 
     51 // {0}
     52 static const UChar gFirstPattern[] = {LEFT_CURLY_BRACKET, DIGIT_ZERO, RIGHT_CURLY_BRACKET};
     53 // {1}
     54 static const UChar gSecondPattern[] = {LEFT_CURLY_BRACKET, DIGIT_ONE, RIGHT_CURLY_BRACKET};
     55 
     56 // default fall-back
     57 static const UChar gDefaultFallbackPattern[] = {LEFT_CURLY_BRACKET, DIGIT_ZERO, RIGHT_CURLY_BRACKET, SPACE, EN_DASH, SPACE, LEFT_CURLY_BRACKET, DIGIT_ONE, RIGHT_CURLY_BRACKET, 0};
     58 
     59 
     60 
     61 DateIntervalInfo::DateIntervalInfo(UErrorCode& status)
     62 :   fFallbackIntervalPattern(gDefaultFallbackPattern),
     63     fFirstDateInPtnIsLaterDate(false),
     64     fIntervalPatterns(NULL)
     65 {
     66     fIntervalPatterns = initHash(status);
     67 }
     68 
     69 
     70 
     71 DateIntervalInfo::DateIntervalInfo(const Locale& locale, UErrorCode& status)
     72 :   fFallbackIntervalPattern(gDefaultFallbackPattern),
     73     fFirstDateInPtnIsLaterDate(false),
     74     fIntervalPatterns(NULL)
     75 {
     76     initializeData(locale, status);
     77 }
     78 
     79 
     80 
     81 void
     82 DateIntervalInfo::setIntervalPattern(const UnicodeString& skeleton,
     83                                      UCalendarDateFields lrgDiffCalUnit,
     84                                      const UnicodeString& intervalPattern,
     85                                      UErrorCode& status) {
     86 
     87     if ( lrgDiffCalUnit == UCAL_HOUR_OF_DAY ) {
     88         setIntervalPatternInternally(skeleton, UCAL_AM_PM, intervalPattern, status);
     89         setIntervalPatternInternally(skeleton, UCAL_HOUR, intervalPattern, status);
     90     } else if ( lrgDiffCalUnit == UCAL_DAY_OF_MONTH ||
     91                 lrgDiffCalUnit == UCAL_DAY_OF_WEEK ) {
     92         setIntervalPatternInternally(skeleton, UCAL_DATE, intervalPattern, status);
     93     } else {
     94         setIntervalPatternInternally(skeleton, lrgDiffCalUnit, intervalPattern, status);
     95     }
     96 }
     97 
     98 
     99 void
    100 DateIntervalInfo::setFallbackIntervalPattern(
    101                                     const UnicodeString& fallbackPattern,
    102                                     UErrorCode& status) {
    103     if ( U_FAILURE(status) ) {
    104         return;
    105     }
    106     int32_t firstPatternIndex = fallbackPattern.indexOf(gFirstPattern,
    107                         sizeof(gFirstPattern)/sizeof(gFirstPattern[0]), 0);
    108     int32_t secondPatternIndex = fallbackPattern.indexOf(gSecondPattern,
    109                         sizeof(gSecondPattern)/sizeof(gSecondPattern[0]), 0);
    110     if ( firstPatternIndex == -1 || secondPatternIndex == -1 ) {
    111         status = U_ILLEGAL_ARGUMENT_ERROR;
    112         return;
    113     }
    114     if ( firstPatternIndex > secondPatternIndex ) {
    115         fFirstDateInPtnIsLaterDate = true;
    116     }
    117     fFallbackIntervalPattern = fallbackPattern;
    118 }
    119 
    120 
    121 
    122 DateIntervalInfo::DateIntervalInfo(const DateIntervalInfo& dtitvinf)
    123 :   UObject(dtitvinf),
    124     fIntervalPatterns(NULL)
    125 {
    126     *this = dtitvinf;
    127 }
    128 
    129 
    130 
    131 DateIntervalInfo&
    132 DateIntervalInfo::operator=(const DateIntervalInfo& dtitvinf) {
    133     if ( this == &dtitvinf ) {
    134         return *this;
    135     }
    136 
    137     UErrorCode status = U_ZERO_ERROR;
    138     deleteHash(fIntervalPatterns);
    139     fIntervalPatterns = initHash(status);
    140     copyHash(dtitvinf.fIntervalPatterns, fIntervalPatterns, status);
    141     if ( U_FAILURE(status) ) {
    142         return *this;
    143     }
    144 
    145     fFallbackIntervalPattern = dtitvinf.fFallbackIntervalPattern;
    146     fFirstDateInPtnIsLaterDate = dtitvinf.fFirstDateInPtnIsLaterDate;
    147     return *this;
    148 }
    149 
    150 
    151 DateIntervalInfo*
    152 DateIntervalInfo::clone() const {
    153     return new DateIntervalInfo(*this);
    154 }
    155 
    156 
    157 DateIntervalInfo::~DateIntervalInfo() {
    158     deleteHash(fIntervalPatterns);
    159     fIntervalPatterns = NULL;
    160 }
    161 
    162 
    163 UBool
    164 DateIntervalInfo::operator==(const DateIntervalInfo& other) const {
    165     UBool equal = (
    166       fFallbackIntervalPattern == other.fFallbackIntervalPattern &&
    167       fFirstDateInPtnIsLaterDate == other.fFirstDateInPtnIsLaterDate );
    168 
    169     if ( equal == TRUE ) {
    170         equal = fIntervalPatterns->equals(*(other.fIntervalPatterns));
    171     }
    172 
    173     return equal;
    174 }
    175 
    176 
    177 UnicodeString&
    178 DateIntervalInfo::getIntervalPattern(const UnicodeString& skeleton,
    179                                      UCalendarDateFields field,
    180                                      UnicodeString& result,
    181                                      UErrorCode& status) const {
    182     if ( U_FAILURE(status) ) {
    183         return result;
    184     }
    185 
    186     const UnicodeString* patternsOfOneSkeleton = (UnicodeString*) fIntervalPatterns->get(skeleton);
    187     if ( patternsOfOneSkeleton != NULL ) {
    188         IntervalPatternIndex index = calendarFieldToIntervalIndex(field, status);
    189         if ( U_FAILURE(status) ) {
    190             return result;
    191         }
    192         const UnicodeString& intervalPattern =  patternsOfOneSkeleton[index];
    193         if ( !intervalPattern.isEmpty() ) {
    194             result = intervalPattern;
    195         }
    196     }
    197     return result;
    198 }
    199 
    200 
    201 UBool
    202 DateIntervalInfo::getDefaultOrder() const {
    203     return fFirstDateInPtnIsLaterDate;
    204 }
    205 
    206 
    207 UnicodeString&
    208 DateIntervalInfo::getFallbackIntervalPattern(UnicodeString& result) const {
    209     result = fFallbackIntervalPattern;
    210     return result;
    211 }
    212 
    213 #define ULOC_LOCALE_IDENTIFIER_CAPACITY (ULOC_FULLNAME_CAPACITY + 1 + ULOC_KEYWORD_AND_VALUES_CAPACITY)
    214 
    215 void
    216 DateIntervalInfo::initializeData(const Locale& locale, UErrorCode& err)
    217 {
    218   fIntervalPatterns = initHash(err);
    219   if ( U_FAILURE(err) ) {
    220       return;
    221   }
    222   const char *locName = locale.getName();
    223   char parentLocale[ULOC_FULLNAME_CAPACITY];
    224   uprv_strcpy(parentLocale, locName);
    225   UErrorCode status = U_ZERO_ERROR;
    226   Hashtable skeletonSet(FALSE, status);
    227   if ( U_FAILURE(status) ) {
    228       return;
    229   }
    230 
    231   // determine calendar type
    232   const char * calendarTypeToUse = gGregorianTag; // initial default
    233   char         calendarType[ULOC_KEYWORDS_CAPACITY]; // to be filled in with the type to use, if all goes well
    234   char         localeWithCalendarKey[ULOC_LOCALE_IDENTIFIER_CAPACITY];
    235   // obtain a locale that always has the calendar key value that should be used
    236   (void)ures_getFunctionalEquivalent(localeWithCalendarKey, ULOC_LOCALE_IDENTIFIER_CAPACITY, NULL,
    237                                      "calendar", "calendar", locName, NULL, FALSE, &status);
    238   localeWithCalendarKey[ULOC_LOCALE_IDENTIFIER_CAPACITY-1] = 0; // ensure null termination
    239   // now get the calendar key value from that locale
    240   int32_t calendarTypeLen = uloc_getKeywordValue(localeWithCalendarKey, "calendar", calendarType, ULOC_KEYWORDS_CAPACITY, &status);
    241   if (U_SUCCESS(status) && calendarTypeLen < ULOC_KEYWORDS_CAPACITY) {
    242     calendarTypeToUse = calendarType;
    243   }
    244   status = U_ZERO_ERROR;
    245 
    246   do {
    247     UResourceBundle *rb, *calBundle, *calTypeBundle, *itvDtPtnResource;
    248     rb = ures_open(NULL, parentLocale, &status);
    249     if ( U_FAILURE(status) ) {
    250         break;
    251     }
    252     calBundle = ures_getByKey(rb, gCalendarTag, NULL, &status);
    253     calTypeBundle = ures_getByKey(calBundle, calendarTypeToUse, NULL, &status);
    254     itvDtPtnResource = ures_getByKeyWithFallback(calTypeBundle,
    255                          gIntervalDateTimePatternTag, NULL, &status);
    256 
    257     if ( U_SUCCESS(status) ) {
    258         // look for fallback first, since it establishes the default order
    259         const UChar* resStr;
    260         int32_t resStrLen = 0;
    261         resStr = ures_getStringByKeyWithFallback(itvDtPtnResource,
    262                                              gFallbackPatternTag,
    263                                              &resStrLen, &status);
    264         if ( U_SUCCESS(status) ) {
    265             UnicodeString pattern = UnicodeString(TRUE, resStr, resStrLen);
    266             setFallbackIntervalPattern(pattern, status);
    267         }
    268 
    269         int32_t size = ures_getSize(itvDtPtnResource);
    270         int32_t index;
    271         for ( index = 0; index < size; ++index ) {
    272             LocalUResourceBundlePointer oneRes(ures_getByIndex(itvDtPtnResource, index,
    273                                                      NULL, &status));
    274             if ( U_SUCCESS(status) ) {
    275                 const char* skeleton = ures_getKey(oneRes.getAlias());
    276                 if (skeleton == NULL) {
    277                     continue;
    278                 }
    279                 UnicodeString skeletonUniStr(skeleton, -1, US_INV);
    280                 if ( skeletonSet.geti(skeletonUniStr) == 1 ) {
    281                     continue;
    282                 }
    283                 skeletonSet.puti(skeletonUniStr, 1, status);
    284                 if ( uprv_strcmp(skeleton, gFallbackPatternTag) == 0 ) {
    285                     continue;  // fallback
    286                 }
    287 
    288                 LocalUResourceBundlePointer intervalPatterns(ures_getByKey(
    289                                      itvDtPtnResource, skeleton, NULL, &status));
    290 
    291                 if ( U_FAILURE(status) ) {
    292                     break;
    293                 }
    294                 if ( intervalPatterns == NULL ) {
    295                     continue;
    296                 }
    297 
    298                 const char* key;
    299                 int32_t ptnNum = ures_getSize(intervalPatterns.getAlias());
    300                 int32_t ptnIndex;
    301                 for ( ptnIndex = 0; ptnIndex < ptnNum; ++ptnIndex ) {
    302                     UnicodeString pattern =
    303                         ures_getNextUnicodeString(intervalPatterns.getAlias(), &key, &status);
    304                     if ( U_FAILURE(status) ) {
    305                         break;
    306                     }
    307 
    308                     UCalendarDateFields calendarField = UCAL_FIELD_COUNT;
    309                     if ( !uprv_strcmp(key, "y") ) {
    310                         calendarField = UCAL_YEAR;
    311                     } else if ( !uprv_strcmp(key, "M") ) {
    312                         calendarField = UCAL_MONTH;
    313                     } else if ( !uprv_strcmp(key, "d") ) {
    314                         calendarField = UCAL_DATE;
    315                     } else if ( !uprv_strcmp(key, "a") ) {
    316                         calendarField = UCAL_AM_PM;
    317                     } else if ( !uprv_strcmp(key, "h") || !uprv_strcmp(key, "H") ) {
    318                         calendarField = UCAL_HOUR;
    319                     } else if ( !uprv_strcmp(key, "m") ) {
    320                         calendarField = UCAL_MINUTE;
    321                     }
    322                     if ( calendarField != UCAL_FIELD_COUNT ) {
    323                         setIntervalPatternInternally(skeletonUniStr, calendarField, pattern,status);
    324                     }
    325                 }
    326             }
    327         }
    328     }
    329     ures_close(itvDtPtnResource);
    330     ures_close(calTypeBundle);
    331     ures_close(calBundle);
    332 
    333     status = U_ZERO_ERROR;
    334     // Find the name of the appropriate parent locale (from %%Parent if present, else
    335     // uloc_getParent on the actual locale name)
    336     // (It would be nice to have a ures function that did this...)
    337     int32_t locNameLen;
    338     const UChar * parentUName = ures_getStringByKey(rb, "%%Parent", &locNameLen, &status);
    339     if (U_SUCCESS(status) && status != U_USING_FALLBACK_WARNING && locNameLen < ULOC_FULLNAME_CAPACITY) {
    340         u_UCharsToChars(parentUName, parentLocale, locNameLen + 1);
    341     } else {
    342         status = U_ZERO_ERROR;
    343         // Get the actual name of the current locale being used
    344         const char *curLocaleName=ures_getLocaleByType(rb, ULOC_ACTUAL_LOCALE, &status);
    345         if ( U_FAILURE(status) ) {
    346             curLocaleName = parentLocale;
    347             status = U_ZERO_ERROR;
    348         }
    349         uloc_getParent(curLocaleName, parentLocale, ULOC_FULLNAME_CAPACITY, &status);
    350         if (U_FAILURE(err) || err == U_STRING_NOT_TERMINATED_WARNING) {
    351             parentLocale[0] = 0; // just fallback to root, will cause us to stop
    352             status = U_ZERO_ERROR;
    353         }
    354     }
    355     // Now we can close the current locale bundle
    356     ures_close(rb);
    357     // If the new current locale is root, then stop
    358     // (unlike for DateTimePatternGenerator, DateIntervalFormat does not go all the way up
    359     // to root to find additional data for non-root locales)
    360   } while ( parentLocale[0] != 0 && uprv_strcmp(parentLocale,"root")!=0 );
    361 }
    362 
    363 
    364 
    365 void
    366 DateIntervalInfo::setIntervalPatternInternally(const UnicodeString& skeleton,
    367                                       UCalendarDateFields lrgDiffCalUnit,
    368                                       const UnicodeString& intervalPattern,
    369                                       UErrorCode& status) {
    370     IntervalPatternIndex index = calendarFieldToIntervalIndex(lrgDiffCalUnit,status);
    371     if ( U_FAILURE(status) ) {
    372         return;
    373     }
    374     UnicodeString* patternsOfOneSkeleton = (UnicodeString*)(fIntervalPatterns->get(skeleton));
    375     UBool emptyHash = false;
    376     if ( patternsOfOneSkeleton == NULL ) {
    377         patternsOfOneSkeleton = new UnicodeString[kIPI_MAX_INDEX];
    378         emptyHash = true;
    379     }
    380 
    381     patternsOfOneSkeleton[index] = intervalPattern;
    382     if ( emptyHash == TRUE ) {
    383         fIntervalPatterns->put(skeleton, patternsOfOneSkeleton, status);
    384     }
    385 }
    386 
    387 
    388 
    389 void
    390 DateIntervalInfo::parseSkeleton(const UnicodeString& skeleton,
    391                                 int32_t* skeletonFieldWidth) {
    392     const int8_t PATTERN_CHAR_BASE = 0x41;
    393     int32_t i;
    394     for ( i = 0; i < skeleton.length(); ++i ) {
    395         // it is an ASCII char in skeleton
    396         int8_t ch = (int8_t)skeleton.charAt(i);
    397         ++skeletonFieldWidth[ch - PATTERN_CHAR_BASE];
    398     }
    399 }
    400 
    401 
    402 
    403 UBool
    404 DateIntervalInfo::stringNumeric(int32_t fieldWidth, int32_t anotherFieldWidth,
    405                                 char patternLetter) {
    406     if ( patternLetter == 'M' ) {
    407         if ( (fieldWidth <= 2 && anotherFieldWidth > 2) ||
    408              (fieldWidth > 2 && anotherFieldWidth <= 2 )) {
    409             return true;
    410         }
    411     }
    412     return false;
    413 }
    414 
    415 
    416 
    417 const UnicodeString*
    418 DateIntervalInfo::getBestSkeleton(const UnicodeString& skeleton,
    419                                   int8_t& bestMatchDistanceInfo) const {
    420 #ifdef DTITVINF_DEBUG
    421     char result[1000];
    422     char result_1[1000];
    423     char mesg[2000];
    424     skeleton.extract(0,  skeleton.length(), result, "UTF-8");
    425     sprintf(mesg, "in getBestSkeleton: skeleton: %s; \n", result);
    426     PRINTMESG(mesg)
    427 #endif
    428 
    429 
    430     int32_t inputSkeletonFieldWidth[] =
    431     {
    432     //       A   B   C   D   E   F   G   H   I   J   K   L   M   N   O
    433              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    434     //   P   Q   R   S   T   U   V   W   X   Y   Z
    435          0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, 0, 0,  0, 0, 0,
    436     //       a   b   c   d   e   f   g   h   i   j   k   l   m   n   o
    437          0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    438     //   p   q   r   s   t   u   v   w   x   y   z
    439          0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0
    440     };
    441 
    442     int32_t skeletonFieldWidth[] =
    443     {
    444     //       A   B   C   D   E   F   G   H   I   J   K   L   M   N   O
    445              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    446     //   P   Q   R   S   T   U   V   W   X   Y   Z
    447          0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, 0, 0,  0, 0, 0,
    448     //       a   b   c   d   e   f   g   h   i   j   k   l   m   n   o
    449          0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    450     //   p   q   r   s   t   u   v   w   x   y   z
    451          0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0
    452     };
    453 
    454     const int32_t DIFFERENT_FIELD = 0x1000;
    455     const int32_t STRING_NUMERIC_DIFFERENCE = 0x100;
    456     const int32_t BASE = 0x41;
    457     const UChar CHAR_V = 0x0076;
    458     const UChar CHAR_Z = 0x007A;
    459 
    460     // hack for 'v' and 'z'.
    461     // resource bundle only have time skeletons ending with 'v',
    462     // but not for time skeletons ending with 'z'.
    463     UBool replaceZWithV = false;
    464     const UnicodeString* inputSkeleton = &skeleton;
    465     UnicodeString copySkeleton;
    466     if ( skeleton.indexOf(CHAR_Z) != -1 ) {
    467         copySkeleton = skeleton;
    468         copySkeleton.findAndReplace(UnicodeString(CHAR_Z), UnicodeString(CHAR_V));
    469         inputSkeleton = &copySkeleton;
    470         replaceZWithV = true;
    471     }
    472 
    473     parseSkeleton(*inputSkeleton, inputSkeletonFieldWidth);
    474     int32_t bestDistance = MAX_POSITIVE_INT;
    475     const UnicodeString* bestSkeleton = NULL;
    476 
    477     // 0 means exact the same skeletons;
    478     // 1 means having the same field, but with different length,
    479     // 2 means only z/v differs
    480     // -1 means having different field.
    481     bestMatchDistanceInfo = 0;
    482     int8_t fieldLength = sizeof(skeletonFieldWidth)/sizeof(skeletonFieldWidth[0]);
    483 
    484     int32_t pos = -1;
    485     const UHashElement* elem = NULL;
    486     while ( (elem = fIntervalPatterns->nextElement(pos)) != NULL ) {
    487         const UHashTok keyTok = elem->key;
    488         UnicodeString* skeleton = (UnicodeString*)keyTok.pointer;
    489 #ifdef DTITVINF_DEBUG
    490     skeleton->extract(0,  skeleton->length(), result, "UTF-8");
    491     sprintf(mesg, "available skeletons: skeleton: %s; \n", result);
    492     PRINTMESG(mesg)
    493 #endif
    494 
    495         // clear skeleton field width
    496         int8_t i;
    497         for ( i = 0; i < fieldLength; ++i ) {
    498             skeletonFieldWidth[i] = 0;
    499         }
    500         parseSkeleton(*skeleton, skeletonFieldWidth);
    501         // calculate distance
    502         int32_t distance = 0;
    503         int8_t fieldDifference = 1;
    504         for ( i = 0; i < fieldLength; ++i ) {
    505             int32_t inputFieldWidth = inputSkeletonFieldWidth[i];
    506             int32_t fieldWidth = skeletonFieldWidth[i];
    507             if ( inputFieldWidth == fieldWidth ) {
    508                 continue;
    509             }
    510             if ( inputFieldWidth == 0 ) {
    511                 fieldDifference = -1;
    512                 distance += DIFFERENT_FIELD;
    513             } else if ( fieldWidth == 0 ) {
    514                 fieldDifference = -1;
    515                 distance += DIFFERENT_FIELD;
    516             } else if (stringNumeric(inputFieldWidth, fieldWidth,
    517                                      (char)(i+BASE) ) ) {
    518                 distance += STRING_NUMERIC_DIFFERENCE;
    519             } else {
    520                 distance += (inputFieldWidth > fieldWidth) ?
    521                             (inputFieldWidth - fieldWidth) :
    522                             (fieldWidth - inputFieldWidth);
    523             }
    524         }
    525         if ( distance < bestDistance ) {
    526             bestSkeleton = skeleton;
    527             bestDistance = distance;
    528             bestMatchDistanceInfo = fieldDifference;
    529         }
    530         if ( distance == 0 ) {
    531             bestMatchDistanceInfo = 0;
    532             break;
    533         }
    534     }
    535     if ( replaceZWithV && bestMatchDistanceInfo != -1 ) {
    536         bestMatchDistanceInfo = 2;
    537     }
    538     return bestSkeleton;
    539 }
    540 
    541 
    542 
    543 DateIntervalInfo::IntervalPatternIndex
    544 DateIntervalInfo::calendarFieldToIntervalIndex(UCalendarDateFields field,
    545                                                UErrorCode& status) {
    546     if ( U_FAILURE(status) ) {
    547         return kIPI_MAX_INDEX;
    548     }
    549     IntervalPatternIndex index = kIPI_MAX_INDEX;
    550     switch ( field ) {
    551       case UCAL_ERA:
    552         index = kIPI_ERA;
    553         break;
    554       case UCAL_YEAR:
    555         index = kIPI_YEAR;
    556         break;
    557       case UCAL_MONTH:
    558         index = kIPI_MONTH;
    559         break;
    560       case UCAL_DATE:
    561       case UCAL_DAY_OF_WEEK:
    562       //case UCAL_DAY_OF_MONTH:
    563         index = kIPI_DATE;
    564         break;
    565       case UCAL_AM_PM:
    566         index = kIPI_AM_PM;
    567         break;
    568       case UCAL_HOUR:
    569       case UCAL_HOUR_OF_DAY:
    570         index = kIPI_HOUR;
    571         break;
    572       case UCAL_MINUTE:
    573         index = kIPI_MINUTE;
    574         break;
    575       default:
    576         status = U_ILLEGAL_ARGUMENT_ERROR;
    577     }
    578     return index;
    579 }
    580 
    581 
    582 
    583 void
    584 DateIntervalInfo::deleteHash(Hashtable* hTable)
    585 {
    586     if ( hTable == NULL ) {
    587         return;
    588     }
    589     int32_t pos = -1;
    590     const UHashElement* element = NULL;
    591     while ( (element = hTable->nextElement(pos)) != NULL ) {
    592         const UHashTok valueTok = element->value;
    593         const UnicodeString* value = (UnicodeString*)valueTok.pointer;
    594         delete[] value;
    595     }
    596     delete fIntervalPatterns;
    597 }
    598 
    599 
    600 U_CDECL_BEGIN
    601 
    602 /**
    603  * set hash table value comparator
    604  *
    605  * @param val1  one value in comparison
    606  * @param val2  the other value in comparison
    607  * @return      TRUE if 2 values are the same, FALSE otherwise
    608  */
    609 static UBool U_CALLCONV dtitvinfHashTableValueComparator(UHashTok val1, UHashTok val2);
    610 
    611 static UBool
    612 U_CALLCONV dtitvinfHashTableValueComparator(UHashTok val1, UHashTok val2) {
    613     const UnicodeString* pattern1 = (UnicodeString*)val1.pointer;
    614     const UnicodeString* pattern2 = (UnicodeString*)val2.pointer;
    615     UBool ret = TRUE;
    616     int8_t i;
    617     for ( i = 0; i < DateIntervalInfo::kMaxIntervalPatternIndex && ret == TRUE; ++i ) {
    618         ret = (pattern1[i] == pattern2[i]);
    619     }
    620     return ret;
    621 }
    622 
    623 U_CDECL_END
    624 
    625 
    626 Hashtable*
    627 DateIntervalInfo::initHash(UErrorCode& status) {
    628     if ( U_FAILURE(status) ) {
    629         return NULL;
    630     }
    631     Hashtable* hTable;
    632     if ( (hTable = new Hashtable(FALSE, status)) == NULL ) {
    633         status = U_MEMORY_ALLOCATION_ERROR;
    634         return NULL;
    635     }
    636     if ( U_FAILURE(status) ) {
    637         delete hTable;
    638         return NULL;
    639     }
    640     hTable->setValueComparator(dtitvinfHashTableValueComparator);
    641     return hTable;
    642 }
    643 
    644 
    645 void
    646 DateIntervalInfo::copyHash(const Hashtable* source,
    647                            Hashtable* target,
    648                            UErrorCode& status) {
    649     if ( U_FAILURE(status) ) {
    650         return;
    651     }
    652     int32_t pos = -1;
    653     const UHashElement* element = NULL;
    654     if ( source ) {
    655         while ( (element = source->nextElement(pos)) != NULL ) {
    656             const UHashTok keyTok = element->key;
    657             const UnicodeString* key = (UnicodeString*)keyTok.pointer;
    658             const UHashTok valueTok = element->value;
    659             const UnicodeString* value = (UnicodeString*)valueTok.pointer;
    660             UnicodeString* copy = new UnicodeString[kIPI_MAX_INDEX];
    661             int8_t i;
    662             for ( i = 0; i < kIPI_MAX_INDEX; ++i ) {
    663                 copy[i] = value[i];
    664             }
    665             target->put(UnicodeString(*key), copy, status);
    666             if ( U_FAILURE(status) ) {
    667                 return;
    668             }
    669         }
    670     }
    671 }
    672 
    673 
    674 U_NAMESPACE_END
    675 
    676 #endif
    677