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::impl {
25
26 enum CldrPatternStyle {
27 CLDR_PATTERN_STYLE_DECIMAL,
28 CLDR_PATTERN_STYLE_CURRENCY,
29 CLDR_PATTERN_STYLE_ACCOUNTING,
30 CLDR_PATTERN_STYLE_PERCENT,
31 CLDR_PATTERN_STYLE_SCIENTIFIC,
32 CLDR_PATTERN_STYLE_COUNT,
33 };
34
35 // Namespace for naked functions
36 namespace utils {
37
insertDigitFromSymbols(FormattedStringBuilder & output,int32_t index,int8_t digit,const DecimalFormatSymbols & symbols,Field field,UErrorCode & status)38 inline int32_t insertDigitFromSymbols(FormattedStringBuilder& output, int32_t index, int8_t digit,
39 const DecimalFormatSymbols& symbols, Field field,
40 UErrorCode& status) {
41 if (symbols.getCodePointZero() != -1) {
42 return output.insertCodePoint(index, symbols.getCodePointZero() + digit, field, status);
43 }
44 return output.insert(index, symbols.getConstDigitSymbol(digit), field, status);
45 }
46
unitIsCurrency(const MeasureUnit & unit)47 inline bool unitIsCurrency(const MeasureUnit& unit) {
48 return uprv_strcmp("currency", unit.getType()) == 0;
49 }
50
unitIsBaseUnit(const MeasureUnit & unit)51 inline bool unitIsBaseUnit(const MeasureUnit& unit) {
52 return unit == MeasureUnit();
53 }
54
unitIsPercent(const MeasureUnit & unit)55 inline bool unitIsPercent(const MeasureUnit& unit) {
56 return uprv_strcmp("percent", unit.getSubtype()) == 0;
57 }
58
unitIsPermille(const MeasureUnit & unit)59 inline bool unitIsPermille(const MeasureUnit& unit) {
60 return uprv_strcmp("permille", unit.getSubtype()) == 0;
61 }
62
63 // NOTE: In Java, this method is in NumberFormat.java
64 const char16_t*
65 getPatternForStyle(const Locale& locale, const char* nsName, CldrPatternStyle style, UErrorCode& status);
66
67 /**
68 * Computes the plural form for this number based on the specified set of rules.
69 *
70 * @param rules A {@link PluralRules} object representing the set of rules.
71 * @return The {@link StandardPlural} according to the PluralRules. If the plural form is not in
72 * the set of standard plurals, {@link StandardPlural#OTHER} is returned instead.
73 */
getStandardPlural(const PluralRules * rules,const IFixedDecimal & fdec)74 inline StandardPlural::Form getStandardPlural(const PluralRules *rules,
75 const IFixedDecimal &fdec) {
76 if (rules == nullptr) {
77 // Fail gracefully if the user didn't provide a PluralRules
78 return StandardPlural::Form::OTHER;
79 } else {
80 UnicodeString ruleString = rules->select(fdec);
81 return StandardPlural::orOtherFromString(ruleString);
82 }
83 }
84
85 /**
86 * Computes the plural form after copying the number and applying rounding rules.
87 */
getPluralSafe(const RoundingImpl & rounder,const PluralRules * rules,const DecimalQuantity & dq,UErrorCode & status)88 inline StandardPlural::Form getPluralSafe(
89 const RoundingImpl& rounder,
90 const PluralRules* rules,
91 const DecimalQuantity& dq,
92 UErrorCode& status) {
93 // TODO(ICU-20500): Avoid the copy?
94 DecimalQuantity copy(dq);
95 rounder.apply(copy, status);
96 if (U_FAILURE(status)) {
97 return StandardPlural::Form::OTHER;
98 }
99 return getStandardPlural(rules, copy);
100 }
101
102 } // namespace utils
103
104 } // namespace number::impl
105
106 U_NAMESPACE_END
107
108 #endif //__NUMBER_UTILS_H__
109
110 #endif /* #if !UCONFIG_NO_FORMATTING */
111