Victor Chang | 7322950 | 2020-09-17 13:39:19 +0100 | [diff] [blame] | 1 | // © 2017 and later: Unicode, Inc. and others. |
| 2 | // License & terms of use: http://www.unicode.org/copyright.html |
| 3 | |
| 4 | #include "unicode/utypes.h" |
| 5 | |
| 6 | #if !UCONFIG_NO_FORMATTING |
| 7 | #ifndef __NUMBER_UTILS_H__ |
| 8 | #define __NUMBER_UTILS_H__ |
| 9 | |
| 10 | #include "unicode/numberformatter.h" |
| 11 | #include "number_types.h" |
| 12 | #include "number_decimalquantity.h" |
| 13 | #include "number_scientific.h" |
| 14 | #include "number_patternstring.h" |
| 15 | #include "number_modifiers.h" |
| 16 | #include "number_multiplier.h" |
| 17 | #include "number_roundingutils.h" |
| 18 | #include "decNumber.h" |
| 19 | #include "charstr.h" |
| 20 | #include "formatted_string_builder.h" |
| 21 | |
| 22 | U_NAMESPACE_BEGIN |
| 23 | |
| 24 | namespace number { |
| 25 | namespace impl { |
| 26 | |
| 27 | enum CldrPatternStyle { |
| 28 | CLDR_PATTERN_STYLE_DECIMAL, |
| 29 | CLDR_PATTERN_STYLE_CURRENCY, |
| 30 | CLDR_PATTERN_STYLE_ACCOUNTING, |
| 31 | CLDR_PATTERN_STYLE_PERCENT, |
| 32 | CLDR_PATTERN_STYLE_SCIENTIFIC, |
| 33 | CLDR_PATTERN_STYLE_COUNT, |
| 34 | }; |
| 35 | |
| 36 | // Namespace for naked functions |
| 37 | namespace utils { |
| 38 | |
| 39 | inline int32_t insertDigitFromSymbols(FormattedStringBuilder& output, int32_t index, int8_t digit, |
| 40 | const DecimalFormatSymbols& symbols, Field field, |
| 41 | UErrorCode& status) { |
| 42 | if (symbols.getCodePointZero() != -1) { |
| 43 | return output.insertCodePoint(index, symbols.getCodePointZero() + digit, field, status); |
| 44 | } |
| 45 | return output.insert(index, symbols.getConstDigitSymbol(digit), field, status); |
| 46 | } |
| 47 | |
| 48 | inline bool unitIsCurrency(const MeasureUnit& unit) { |
| 49 | return uprv_strcmp("currency", unit.getType()) == 0; |
| 50 | } |
| 51 | |
Victor Chang | ce4bf3c | 2021-01-19 16:34:24 +0000 | [diff] [blame] | 52 | inline bool unitIsBaseUnit(const MeasureUnit& unit) { |
| 53 | return unit == MeasureUnit(); |
Victor Chang | 7322950 | 2020-09-17 13:39:19 +0100 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | inline bool unitIsPercent(const MeasureUnit& unit) { |
| 57 | return uprv_strcmp("percent", unit.getSubtype()) == 0; |
| 58 | } |
| 59 | |
| 60 | inline bool unitIsPermille(const MeasureUnit& unit) { |
| 61 | return uprv_strcmp("permille", unit.getSubtype()) == 0; |
| 62 | } |
| 63 | |
| 64 | // NOTE: In Java, this method is in NumberFormat.java |
| 65 | const char16_t* |
| 66 | getPatternForStyle(const Locale& locale, const char* nsName, CldrPatternStyle style, UErrorCode& status); |
| 67 | |
| 68 | /** |
| 69 | * Computes the plural form for this number based on the specified set of rules. |
| 70 | * |
| 71 | * @param rules A {@link PluralRules} object representing the set of rules. |
| 72 | * @return The {@link StandardPlural} according to the PluralRules. If the plural form is not in |
| 73 | * the set of standard plurals, {@link StandardPlural#OTHER} is returned instead. |
| 74 | */ |
| 75 | inline StandardPlural::Form getStandardPlural(const PluralRules *rules, |
| 76 | const IFixedDecimal &fdec) { |
| 77 | if (rules == nullptr) { |
| 78 | // Fail gracefully if the user didn't provide a PluralRules |
| 79 | return StandardPlural::Form::OTHER; |
| 80 | } else { |
| 81 | UnicodeString ruleString = rules->select(fdec); |
| 82 | return StandardPlural::orOtherFromString(ruleString); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Computes the plural form after copying the number and applying rounding rules. |
| 88 | */ |
| 89 | inline StandardPlural::Form getPluralSafe( |
| 90 | const RoundingImpl& rounder, |
| 91 | const PluralRules* rules, |
| 92 | const DecimalQuantity& dq, |
| 93 | UErrorCode& status) { |
| 94 | // TODO(ICU-20500): Avoid the copy? |
| 95 | DecimalQuantity copy(dq); |
| 96 | rounder.apply(copy, status); |
| 97 | if (U_FAILURE(status)) { |
| 98 | return StandardPlural::Form::OTHER; |
| 99 | } |
| 100 | return getStandardPlural(rules, copy); |
| 101 | } |
| 102 | |
| 103 | } // namespace utils |
| 104 | |
| 105 | } // namespace impl |
| 106 | } // namespace number |
| 107 | |
| 108 | U_NAMESPACE_END |
| 109 | |
| 110 | #endif //__NUMBER_UTILS_H__ |
| 111 | |
| 112 | #endif /* #if !UCONFIG_NO_FORMATTING */ |