icu_provider_source/currency/
extended.rs

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1// This file is part of ICU4X. For terms of use, please see the file
2// called LICENSE at the top level of the ICU4X source tree
3// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
4
5use crate::cldr_serde;
6use crate::SourceDataProvider;
7use icu::experimental::dimension::provider::extended_currency::*;
8use icu::plurals::PluralElements;
9use icu_provider::prelude::*;
10use std::collections::HashSet;
11
12impl DataProvider<CurrencyExtendedDataV1> for crate::SourceDataProvider {
13    fn load(&self, req: DataRequest) -> Result<DataResponse<CurrencyExtendedDataV1>, DataError> {
14        self.check_req::<CurrencyExtendedDataV1>(req)?;
15
16        let currencies_resource: &cldr_serde::currencies::data::Resource =
17            self.cldr()?
18                .numbers()
19                .read_and_parse(req.id.locale, "currencies.json")?;
20
21        let currency = currencies_resource
22            .main
23            .value
24            .numbers
25            .currencies
26            .get(req.id.marker_attributes.as_str())
27            .ok_or(DataError::custom("No currency associated with the aux key"))?;
28
29        Ok(DataResponse {
30            metadata: Default::default(),
31            payload: DataPayload::from_owned(CurrencyExtendedData {
32                display_names: PluralElements::new(
33                    currency
34                        .other
35                        .as_deref()
36                        .ok_or_else(|| DataErrorKind::IdentifierNotFound.into_error())?,
37                )
38                .with_zero_value(currency.zero.as_deref())
39                .with_one_value(currency.one.as_deref())
40                .with_two_value(currency.two.as_deref())
41                .with_few_value(currency.few.as_deref())
42                .with_many_value(currency.many.as_deref())
43                .with_explicit_one_value(currency.explicit_one.as_deref())
44                .with_explicit_zero_value(currency.explicit_zero.as_deref())
45                .into(),
46            }),
47        })
48    }
49}
50
51impl crate::IterableDataProviderCached<CurrencyExtendedDataV1> for SourceDataProvider {
52    fn iter_ids_cached(&self) -> Result<HashSet<DataIdentifierCow<'static>>, DataError> {
53        let mut result = HashSet::new();
54        let numbers = self.cldr()?.numbers();
55        let locales = numbers.list_locales()?;
56        for locale in locales {
57            let currencies_resource: &cldr_serde::currencies::data::Resource = self
58                .cldr()?
59                .numbers()
60                .read_and_parse(&locale, "currencies.json")?;
61
62            let currencies = &currencies_resource.main.value.numbers.currencies;
63            for (currency, displaynames) in currencies {
64                // By TR 35 (https://unicode.org/reports/tr35/tr35-numbers.html#Currencies)
65                //      If the displayname is not found for the associated `Count`, fall back to the `Count::Other` displayname.
66                //      And the `other` displayname must be present.
67                //      Therefore, we filter out any currencies that do not have an `other` displayname.
68                //      NOTE:
69                //          In case of `other` displayname does not exist, File a Jira ticket to CLDR:
70                //          https://unicode-org.atlassian.net/browse/CLDR
71                if displaynames.other.is_none() {
72                    continue;
73                }
74                if let Ok(attributes) = DataMarkerAttributes::try_from_string(currency.clone()) {
75                    result.insert(DataIdentifierCow::from_owned(attributes, locale));
76                }
77            }
78        }
79
80        Ok(result)
81    }
82}
83
84#[test]
85fn test_basic() {
86    use icu::locale::langid;
87    use icu::plurals::PluralRules;
88    let provider = SourceDataProvider::new_testing();
89    let en: DataPayload<CurrencyExtendedDataV1> = provider
90        .load(DataRequest {
91            id: DataIdentifierBorrowed::for_marker_attributes_and_locale(
92                DataMarkerAttributes::from_str_or_panic("USD"),
93                &langid!("en").into(),
94            ),
95            ..Default::default()
96        })
97        .unwrap()
98        .payload;
99    let en_rules = PluralRules::try_new_cardinal_unstable(&provider, langid!("en").into()).unwrap();
100    assert_eq!(en.get().display_names.get(1.into(), &en_rules), "US dollar");
101    assert_eq!(
102        en.get().display_names.get(10.into(), &en_rules),
103        "US dollars"
104    );
105
106    let fr: DataPayload<CurrencyExtendedDataV1> = provider
107        .load(DataRequest {
108            id: DataIdentifierBorrowed::for_marker_attributes_and_locale(
109                DataMarkerAttributes::from_str_or_panic("USD"),
110                &langid!("fr").into(),
111            ),
112            ..Default::default()
113        })
114        .unwrap()
115        .payload;
116    let fr_rules = PluralRules::try_new_cardinal_unstable(&provider, langid!("fr").into()).unwrap();
117
118    assert_eq!(
119        fr.get().display_names.get(0.into(), &fr_rules),
120        "dollar des États-Unis"
121    );
122    assert_eq!(
123        fr.get().display_names.get(1.into(), &fr_rules),
124        "dollar des États-Unis"
125    );
126    assert_eq!(
127        fr.get().display_names.get(10.into(), &fr_rules),
128        "dollars des États-Unis"
129    );
130}
icu_provider_source/currency/extended.rs

icu_provider_source/currency/
extended.rs
