C++ StringEnumeration::next方法代码示例

/**
 * Returns an enumeration over the IDs of all the regions that are children of this region anywhere in the region
 * hierarchy and match the given type.  This API may return an empty enumeration if this region doesn't have any
 * sub-regions that match the given type. For example, calling this method with region "150" (Europe) and type
 * "URGN_TERRITORY" returns a set containing all the territories in Europe ( "FR" (France) - "IT" (Italy) - "DE" (Germany) etc. )
 */
StringEnumeration*
Region::getContainedRegions( URegionType type, UErrorCode &status ) const {
    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status); // returns immediately if U_FAILURE(status)
    if (U_FAILURE(status)) {
        return NULL;
    }

    UVector *result = new UVector(NULL, uhash_compareChars, status);

    StringEnumeration *cr = getContainedRegions(status);

    for ( int32_t i = 0 ; i < cr->count(status) ; i++ ) {
        const char *id = cr->next(NULL,status);
        const Region *r = Region::getInstance(id,status);
        if ( r->getType() == type ) {
            result->addElement((void *)&r->idStr,status);
        } else {
            StringEnumeration *children = r->getContainedRegions(type, status);
            for ( int32_t j = 0 ; j < children->count(status) ; j++ ) {
                const char *id2 = children->next(NULL,status);
                const Region *r2 = Region::getInstance(id2,status);
                result->addElement((void *)&r2->idStr,status);
            }
            delete children;
        }
    }
    delete cr;
    StringEnumeration* resultEnumeration = new RegionNameEnumeration(result,status);
    delete result;
    return resultEnumeration;
}

void 
TimeUnitFormat::checkConsistency(EStyle style, const char* key, UErrorCode& err) {
    if (U_FAILURE(err)) {
        return;
    }
    // there should be patterns for each plural rule in each time unit.
    // For each time unit, 
    //     for each plural rule, following is unit pattern fall-back rule:
    //         ( for example: "one" hour )
    //         look for its unit pattern in its locale tree.
    //         if pattern is not found in its own locale, such as de_DE,
    //         look for the pattern in its parent, such as de,
    //         keep looking till found or till root.
    //         if the pattern is not found in root either,
    //         fallback to plural count "other",
    //         look for the pattern of "other" in the locale tree:
    //         "de_DE" to "de" to "root".
    //         If not found, fall back to value of 
    //         static variable DEFAULT_PATTERN_FOR_xxx, such as "{0} h". 
    //
    // Following is consistency check to create pattern for each
    // plural rule in each time unit using above fall-back rule.
    //
    StringEnumeration* keywords = fPluralRules->getKeywords(err);
    if (U_SUCCESS(err)) {
        const char* pluralCount;
        while ((pluralCount = keywords->next(NULL, err)) != NULL) {
            if ( U_SUCCESS(err) ) {
                for (int32_t i = 0; i < TimeUnit::UTIMEUNIT_FIELD_COUNT; ++i) {
                    // for each time unit, 
                    // get all the patterns for each plural rule in this locale.
                    Hashtable* countToPatterns = fTimeUnitToCountToPatterns[i];
                    if ( countToPatterns == NULL ) {
                        countToPatterns = initHash(err);
                        if (U_FAILURE(err)) {
                            delete countToPatterns;
                            return;
                        }
                        fTimeUnitToCountToPatterns[i] = countToPatterns;
                    }
                    MessageFormat** formatters = (MessageFormat**)countToPatterns->get(pluralCount);
                    if( formatters == NULL || formatters[style] == NULL ) {
                        // look through parents
                        const char* localeName = fLocale.getName();
                        searchInLocaleChain(style, key, localeName,
                                            (TimeUnit::UTimeUnitFields)i, 
                                            pluralCount, pluralCount, 
                                            countToPatterns, err);
                    }
                }
            }
        }
    }
    delete keywords;
}

void
CurrencyPluralInfo::setupCurrencyPluralPattern(const Locale& loc, UErrorCode& status) {
    if (U_FAILURE(status)) {
        return;
    }

    fPluralCountToCurrencyUnitPattern = initHash(status);
    if (U_FAILURE(status)) {
        return;
    }

    UErrorCode ec = U_ZERO_ERROR;
    UResourceBundle *rb = ures_open(NULL, loc.getName(), &ec);
    UResourceBundle *numberPatterns = ures_getByKey(rb, gNumberPatternsTag, NULL, &ec);
    int32_t ptnLen;
    // TODO: 0 to be NumberFormat::fNumberStyle
    const UChar* numberStylePattern = ures_getStringByIndex(numberPatterns, 0,
                                      &ptnLen, &ec);
    int32_t numberStylePatternLen = ptnLen;
    const UChar* negNumberStylePattern = NULL;
    int32_t negNumberStylePatternLen = 0;
    // TODO: Java
    // parse to check whether there is ";" separator in the numberStylePattern
    UBool hasSeparator = false;
    if (U_SUCCESS(ec)) {
        for (int32_t styleCharIndex = 0; styleCharIndex < ptnLen; ++styleCharIndex) {
            if (numberStylePattern[styleCharIndex] == gNumberPatternSeparator) {
                hasSeparator = true;
                // split the number style pattern into positive and negative
                negNumberStylePattern = numberStylePattern + styleCharIndex + 1;
                negNumberStylePatternLen = ptnLen - styleCharIndex - 1;
                numberStylePatternLen = styleCharIndex;
            }
        }
    }
    ures_close(numberPatterns);

    if (U_FAILURE(ec)) {
        ures_close(rb);
        return;
    }

    UResourceBundle *currencyRes = ures_getByKeyWithFallback(rb, gCurrUnitPtnTag, NULL, &ec);

#ifdef CURRENCY_PLURAL_INFO_DEBUG
    std::cout << "in set up\n";
#endif
    StringEnumeration* keywords = fPluralRules->getKeywords(ec);
    if (U_SUCCESS(ec)) {
        const char* pluralCount;
        while ((pluralCount = keywords->next(NULL, ec)) != NULL) {
            if ( U_SUCCESS(ec) ) {
                int32_t ptnLen;
                UErrorCode err = U_ZERO_ERROR;
                const UChar* patternChars = ures_getStringByKeyWithFallback(
                                                currencyRes, pluralCount, &ptnLen, &err);
                if (U_SUCCESS(err) && ptnLen > 0) {
                    UnicodeString* pattern = new UnicodeString(patternChars, ptnLen);
#ifdef CURRENCY_PLURAL_INFO_DEBUG
                    char result_1[1000];
                    pattern->extract(0, pattern->length(), result_1, "UTF-8");
                    std::cout << "pluralCount: " << pluralCount << "; pattern: " << result_1 << "\n";
#endif
                    pattern->findAndReplace(gPart0,
                                            UnicodeString(numberStylePattern, numberStylePatternLen));
                    pattern->findAndReplace(gPart1, gTripleCurrencySign);

                    if (hasSeparator) {
                        UnicodeString negPattern(patternChars, ptnLen);
                        negPattern.findAndReplace(gPart0,
                                                  UnicodeString(negNumberStylePattern, negNumberStylePatternLen));
                        negPattern.findAndReplace(gPart1, gTripleCurrencySign);
                        pattern->append(gNumberPatternSeparator);
                        pattern->append(negPattern);
                    }
#ifdef CURRENCY_PLURAL_INFO_DEBUG
                    pattern->extract(0, pattern->length(), result_1, "UTF-8");
                    std::cout << "pluralCount: " << pluralCount << "; pattern: " << result_1 << "\n";
#endif

                    fPluralCountToCurrencyUnitPattern->put(UnicodeString(pluralCount), pattern, status);
                }
            }
        }
    }
    delete keywords;
    ures_close(currencyRes);
    ures_close(rb);
}

void
CurrencyPluralInfo::setupCurrencyPluralPattern(const Locale& loc, UErrorCode& status) {
    if (U_FAILURE(status)) {
        return;
    }

    if (fPluralCountToCurrencyUnitPattern) {
        deleteHash(fPluralCountToCurrencyUnitPattern);
    }
    fPluralCountToCurrencyUnitPattern = initHash(status);
    if (U_FAILURE(status)) {
        return;
    }

    NumberingSystem *ns = NumberingSystem::createInstance(loc,status);
    UErrorCode ec = U_ZERO_ERROR;
    UResourceBundle *rb = ures_open(NULL, loc.getName(), &ec);
    UResourceBundle *numElements = ures_getByKeyWithFallback(rb, gNumberElementsTag, NULL, &ec);
    rb = ures_getByKeyWithFallback(numElements, ns->getName(), rb, &ec);
    rb = ures_getByKeyWithFallback(rb, gPatternsTag, rb, &ec);
    int32_t ptnLen;
    const UChar* numberStylePattern = ures_getStringByKeyWithFallback(rb, gDecimalFormatTag, &ptnLen, &ec);
    // Fall back to "latn" if num sys specific pattern isn't there.
    if ( ec == U_MISSING_RESOURCE_ERROR && uprv_strcmp(ns->getName(),gLatnTag)) {
        ec = U_ZERO_ERROR;
        rb = ures_getByKeyWithFallback(numElements, gLatnTag, rb, &ec);
        rb = ures_getByKeyWithFallback(rb, gPatternsTag, rb, &ec);
        numberStylePattern = ures_getStringByKeyWithFallback(rb, gDecimalFormatTag, &ptnLen, &ec);
    }
    int32_t numberStylePatternLen = ptnLen;
    const UChar* negNumberStylePattern = NULL;
    int32_t negNumberStylePatternLen = 0;
    // TODO: Java
    // parse to check whether there is ";" separator in the numberStylePattern
    UBool hasSeparator = false;
    if (U_SUCCESS(ec)) {
        for (int32_t styleCharIndex = 0; styleCharIndex < ptnLen; ++styleCharIndex) {
            if (numberStylePattern[styleCharIndex] == gNumberPatternSeparator) {
                hasSeparator = true;
                // split the number style pattern into positive and negative
                negNumberStylePattern = numberStylePattern + styleCharIndex + 1;
                negNumberStylePatternLen = ptnLen - styleCharIndex - 1;
                numberStylePatternLen = styleCharIndex;
            }
        }
    }

    ures_close(numElements);
    ures_close(rb);
    delete ns;

    if (U_FAILURE(ec)) {
        return;
    }

    UResourceBundle *currRb = ures_open(U_ICUDATA_CURR, loc.getName(), &ec);
    UResourceBundle *currencyRes = ures_getByKeyWithFallback(currRb, gCurrUnitPtnTag, NULL, &ec);
    
#ifdef CURRENCY_PLURAL_INFO_DEBUG
    std::cout << "in set up\n";
#endif
    StringEnumeration* keywords = fPluralRules->getKeywords(ec);
    if (U_SUCCESS(ec)) {
        const char* pluralCount;
        while ((pluralCount = keywords->next(NULL, ec)) != NULL) {
            if ( U_SUCCESS(ec) ) {
                int32_t ptnLen;
                UErrorCode err = U_ZERO_ERROR;
                const UChar* patternChars = ures_getStringByKeyWithFallback(
                    currencyRes, pluralCount, &ptnLen, &err);
                if (U_SUCCESS(err) && ptnLen > 0) {
                    UnicodeString* pattern = new UnicodeString(patternChars, ptnLen);
#ifdef CURRENCY_PLURAL_INFO_DEBUG
                    char result_1[1000];
                    pattern->extract(0, pattern->length(), result_1, "UTF-8");
                    std::cout << "pluralCount: " << pluralCount << "; pattern: " << result_1 << "\n";
#endif
                    pattern->findAndReplace(UnicodeString(TRUE, gPart0, 3), 
                      UnicodeString(numberStylePattern, numberStylePatternLen));
                    pattern->findAndReplace(UnicodeString(TRUE, gPart1, 3), UnicodeString(TRUE, gTripleCurrencySign, 3));

                    if (hasSeparator) {
                        UnicodeString negPattern(patternChars, ptnLen);
                        negPattern.findAndReplace(UnicodeString(TRUE, gPart0, 3), 
                          UnicodeString(negNumberStylePattern, negNumberStylePatternLen));
                        negPattern.findAndReplace(UnicodeString(TRUE, gPart1, 3), UnicodeString(TRUE, gTripleCurrencySign, 3));
                        pattern->append(gNumberPatternSeparator);
                        pattern->append(negPattern);
                    }
#ifdef CURRENCY_PLURAL_INFO_DEBUG
                    pattern->extract(0, pattern->length(), result_1, "UTF-8");
                    std::cout << "pluralCount: " << pluralCount << "; pattern: " << result_1 << "\n";
#endif

                    fPluralCountToCurrencyUnitPattern->put(UnicodeString(pluralCount, -1, US_INV), pattern, status);
                }
            }
        }
    }
    delete keywords;
//.........这里部分代码省略.........

UnicodeString&
LocaleDisplayNamesImpl::localeDisplayName(const Locale& locale,
                                          UnicodeString& result) const {
  UnicodeString resultName;

  const char* lang = locale.getLanguage();
  if (uprv_strlen(lang) == 0) {
    lang = "root";
  }
  const char* script = locale.getScript();
  const char* country = locale.getCountry();
  const char* variant = locale.getVariant();

  UBool hasScript = uprv_strlen(script) > 0;
  UBool hasCountry = uprv_strlen(country) > 0;
  UBool hasVariant = uprv_strlen(variant) > 0;

  if (dialectHandling == ULDN_DIALECT_NAMES) {
    char buffer[ULOC_FULLNAME_CAPACITY];
    do { // loop construct is so we can break early out of search
      if (hasScript && hasCountry) {
        ncat(buffer, ULOC_FULLNAME_CAPACITY, lang, "_", script, "_", country, (char *)0);
        localeIdName(buffer, resultName);
        if (!resultName.isBogus()) {
          hasScript = FALSE;
          hasCountry = FALSE;
          break;
        }
      }
      if (hasScript) {
        ncat(buffer, ULOC_FULLNAME_CAPACITY, lang, "_", script, (char *)0);
        localeIdName(buffer, resultName);
        if (!resultName.isBogus()) {
          hasScript = FALSE;
          break;
        }
      }
      if (hasCountry) {
        ncat(buffer, ULOC_FULLNAME_CAPACITY, lang, "_", country, (char*)0);
        localeIdName(buffer, resultName);
        if (!resultName.isBogus()) {
          hasCountry = FALSE;
          break;
        }
      }
    } while (FALSE);
  }
  if (resultName.isBogus() || resultName.isEmpty()) {
    localeIdName(lang, resultName);
  }

  UnicodeString resultRemainder;
  UnicodeString temp;
  StringEnumeration *e = NULL;
  UErrorCode status = U_ZERO_ERROR;

  if (hasScript) {
    resultRemainder.append(scriptDisplayName(script, temp));
  }
  if (hasCountry) {
    appendWithSep(resultRemainder, regionDisplayName(country, temp));
  }
  if (hasVariant) {
    appendWithSep(resultRemainder, variantDisplayName(variant, temp));
  }
  resultRemainder.findAndReplace(formatOpenParen, formatReplaceOpenParen);
  resultRemainder.findAndReplace(formatCloseParen, formatReplaceCloseParen);

  e = locale.createKeywords(status);
  if (e && U_SUCCESS(status)) {
    UnicodeString temp2;
    char value[ULOC_KEYWORD_AND_VALUES_CAPACITY]; // sigh, no ULOC_VALUE_CAPACITY
    const char* key;
    while ((key = e->next((int32_t *)0, status)) != NULL) {
      locale.getKeywordValue(key, value, ULOC_KEYWORD_AND_VALUES_CAPACITY, status);
      keyDisplayName(key, temp);
      temp.findAndReplace(formatOpenParen, formatReplaceOpenParen);
      temp.findAndReplace(formatCloseParen, formatReplaceCloseParen);
      keyValueDisplayName(key, value, temp2);
      temp2.findAndReplace(formatOpenParen, formatReplaceOpenParen);
      temp2.findAndReplace(formatCloseParen, formatReplaceCloseParen);
      if (temp2 != UnicodeString(value, -1, US_INV)) {
        appendWithSep(resultRemainder, temp2);
      } else if (temp != UnicodeString(key, -1, US_INV)) {
        UnicodeString temp3;
        Formattable data[] = {
          temp,
          temp2
        };
        FieldPosition fpos;
        status = U_ZERO_ERROR;
        keyTypeFormat->format(data, 2, temp3, fpos, status);
        appendWithSep(resultRemainder, temp3);
      } else {
        appendWithSep(resultRemainder, temp)
          .append((UChar)0x3d /* = */)
          .append(temp2);
      }
    }
    delete e;
//.........这里部分代码省略.........

void PluralRulesTest::testAvailbleLocales() {
    
    // Hash set of (char *) strings.
    UErrorCode status = U_ZERO_ERROR;
    UHashtable *localeSet = uhash_open(uhash_hashUnicodeString, uhash_compareUnicodeString, uhash_compareLong, &status);
    uhash_setKeyDeleter(localeSet, uprv_deleteUObject);
    if (U_FAILURE(status)) {
        errln("file %s,  line %d: Error status = %s", __FILE__, __LINE__, u_errorName(status));
        return;
    }

    // Check that each locale returned by the iterator is unique.
    StringEnumeration *localesEnum = PluralRules::getAvailableLocales(status);
    int localeCount = 0;
    for (;;) {
        const char *locale = localesEnum->next(NULL, status);
        if (U_FAILURE(status)) {
            dataerrln("file %s,  line %d: Error status = %s", __FILE__, __LINE__, u_errorName(status));
            return;
        }
        if (locale == NULL) {
            break;
        }
        localeCount++;
        int32_t oldVal = uhash_puti(localeSet, new UnicodeString(locale), 1, &status);
        if (oldVal != 0) {
            errln("file %s,  line %d: locale %s was seen before.", __FILE__, __LINE__, locale);
        }
    }

    // Reset the iterator, verify that we get the same count.
    localesEnum->reset(status);
    int32_t localeCount2 = 0;
    while (localesEnum->next(NULL, status) != NULL) {
        if (U_FAILURE(status)) {
            errln("file %s,  line %d: Error status = %s", __FILE__, __LINE__, u_errorName(status));
            break;
        }
        localeCount2++;
    }
    if (localeCount != localeCount2) {
        errln("file %s,  line %d: locale counts differ. They are (%d, %d)", 
            __FILE__, __LINE__, localeCount, localeCount2);
    }

    // Instantiate plural rules for each available locale.
    localesEnum->reset(status);
    for (;;) {
        status = U_ZERO_ERROR;
        const char *localeName = localesEnum->next(NULL, status);
        if (U_FAILURE(status)) {
            errln("file %s,  line %d: Error status = %s, locale = %s",
                __FILE__, __LINE__, u_errorName(status), localeName);
            return;
        }
        if (localeName == NULL) {
            break;
        }
        Locale locale = Locale::createFromName(localeName);
        PluralRules *pr = PluralRules::forLocale(locale, status);
        if (U_FAILURE(status)) {
            errln("file %s,  line %d: Error %s creating plural rules for locale %s", 
                __FILE__, __LINE__, u_errorName(status), localeName);
            continue;
        }
        if (pr == NULL) {
            errln("file %s, line %d: Null plural rules for locale %s", __FILE__, __LINE__, localeName);
            continue;
        }

        // Pump some numbers through the plural rules.  Can't check for correct results, 
        // mostly this to tickle any asserts or crashes that may be lurking.
        for (double n=0; n<120.0; n+=0.5) {
            UnicodeString keyword = pr->select(n);
            if (keyword.length() == 0) {
                errln("file %s, line %d, empty keyword for n = %g, locale %s",
                    __FILE__, __LINE__, n, localeName);
            }
        }
        delete pr;
    }

    uhash_close(localeSet);
    delete localesEnum;

}