+/**
+ * Bottleneck through which all the public format() methods
+ * that take a long pass. By the time we get here, we know
+ * which rule set we're using to do the formatting.
+ * @param number The number to format
+ * @param ruleSet The rule set to use to format the number
+ * @return The text that resulted from formatting the number
+ */
+UnicodeString&
+RuleBasedNumberFormat::format(int64_t number, NFRuleSet *ruleSet, UnicodeString& toAppendTo, UErrorCode& status) const
+{
+ // all API format() routines that take a double vector through
+ // here. We have these two identical functions-- one taking a
+ // double and one taking a long-- the couple digits of precision
+ // that long has but double doesn't (both types are 8 bytes long,
+ // but double has to borrow some of the mantissa bits to hold
+ // the exponent).
+ // Create an empty string buffer where the result will
+ // be built, and pass it to the rule set (along with an insertion
+ // position of 0 and the number being formatted) to the rule set
+ // for formatting
+
+ if (U_SUCCESS(status)) {
+ if (number == U_INT64_MIN) {
+ // We can't handle this value right now. Provide an accurate default value.
+
+ // TODO this section should probably be optimized. The DecimalFormat is shared in ICU4J.
+ NumberFormat *decimalFormat = NumberFormat::createInstance(locale, UNUM_DECIMAL, status);
+ Formattable f;
+ FieldPosition pos(FieldPosition::DONT_CARE);
+ DigitList *digitList = new DigitList();
+ digitList->set(number);
+ f.adoptDigitList(digitList);
+ decimalFormat->format(f, toAppendTo, pos, status);
+ delete decimalFormat;
+ }
+ else {
+ int32_t startPos = toAppendTo.length();
+ ruleSet->format(number, toAppendTo, toAppendTo.length(), 0, status);
+ adjustForCapitalizationContext(startPos, toAppendTo, status);
+ }
+ }
+ return toAppendTo;
+}
+
+UnicodeString&
+RuleBasedNumberFormat::adjustForCapitalizationContext(int32_t startPos,
+ UnicodeString& currentResult,
+ UErrorCode& status) const
+{
+#if !UCONFIG_NO_BREAK_ITERATION
+ UDisplayContext capitalizationContext = getContext(UDISPCTX_TYPE_CAPITALIZATION, status);
+ if (capitalizationContext != UDISPCTX_CAPITALIZATION_NONE && startPos == 0 && currentResult.length() > 0) {
+ // capitalize currentResult according to context
+ UChar32 ch = currentResult.char32At(0);
+ if (u_islower(ch) && U_SUCCESS(status) && capitalizationBrkIter != NULL &&
+ ( capitalizationContext == UDISPCTX_CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE ||
+ (capitalizationContext == UDISPCTX_CAPITALIZATION_FOR_UI_LIST_OR_MENU && capitalizationForUIListMenu) ||
+ (capitalizationContext == UDISPCTX_CAPITALIZATION_FOR_STANDALONE && capitalizationForStandAlone)) ) {
+ // titlecase first word of currentResult, here use sentence iterator unlike current implementations
+ // in LocaleDisplayNamesImpl::adjustForUsageAndContext and RelativeDateFormat::format
+ currentResult.toTitle(capitalizationBrkIter, locale, U_TITLECASE_NO_LOWERCASE | U_TITLECASE_NO_BREAK_ADJUSTMENT);
+ }
+ }
+#endif
+ return currentResult;
+}
+
+
projects / apple / icu.git / blobdiff