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// This file is part of ICU4X. For terms of use, please see the file
// called LICENSE at the top level of the ICU4X source tree
// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
#[diplomat::bridge]
pub mod ffi {
use crate::errors::ffi::ICU4XError;
use alloc::boxed::Box;
use core::str;
use diplomat_runtime::DiplomatWriteable;
use icu_locid::extensions::unicode::Key;
use icu_locid::subtags::{Language, Region, Script};
use icu_locid::Locale;
use writeable::Writeable;
use crate::common::ffi::ICU4XOrdering;
#[diplomat::opaque]
/// An ICU4X Locale, capable of representing strings like `"en-US"`.
#[diplomat::rust_link(icu::locid::Locale, Struct)]
pub struct ICU4XLocale(pub Locale);
impl ICU4XLocale {
/// Construct an [`ICU4XLocale`] from an locale identifier.
///
/// This will run the complete locale parsing algorithm. If code size and
/// performance are critical and the locale is of a known shape (such as
/// `aa-BB`) use `create_und`, `set_language`, `set_script`, and `set_region`.
#[diplomat::rust_link(icu::locid::Locale::try_from_bytes, FnInStruct)]
#[diplomat::rust_link(icu::locid::Locale::from_str, FnInStruct, hidden)]
pub fn create_from_string(name: &str) -> Result<Box<ICU4XLocale>, ICU4XError> {
let name = name.as_bytes(); // #2520
Ok(Box::new(ICU4XLocale(Locale::try_from_bytes(name)?)))
}
/// Construct a default undefined [`ICU4XLocale`] "und".
#[diplomat::rust_link(icu::locid::Locale::UND, AssociatedConstantInStruct)]
pub fn create_und() -> Box<ICU4XLocale> {
Box::new(ICU4XLocale(Locale::UND))
}
/// Clones the [`ICU4XLocale`].
#[diplomat::rust_link(icu::locid::Locale, Struct)]
#[allow(clippy::should_implement_trait)]
pub fn clone(&self) -> Box<ICU4XLocale> {
Box::new(ICU4XLocale(self.0.clone()))
}
/// Write a string representation of the `LanguageIdentifier` part of
/// [`ICU4XLocale`] to `write`.
#[diplomat::rust_link(icu::locid::Locale::id, StructField)]
pub fn basename(
&self,
write: &mut diplomat_runtime::DiplomatWriteable,
) -> Result<(), ICU4XError> {
self.0.id.write_to(write)?;
Ok(())
}
/// Write a string representation of the unicode extension to `write`
#[diplomat::rust_link(icu::locid::Locale::extensions, StructField)]
pub fn get_unicode_extension(
&self,
bytes: &str,
write: &mut diplomat_runtime::DiplomatWriteable,
) -> Result<(), ICU4XError> {
let bytes = bytes.as_bytes(); // #2520
self.0
.extensions
.unicode
.keywords
.get(&Key::try_from_bytes(bytes)?)
.ok_or(ICU4XError::LocaleUndefinedSubtagError)?
.write_to(write)?;
Ok(())
}
/// Write a string representation of [`ICU4XLocale`] language to `write`
#[diplomat::rust_link(icu::locid::Locale::id, StructField)]
pub fn language(
&self,
write: &mut diplomat_runtime::DiplomatWriteable,
) -> Result<(), ICU4XError> {
self.0.id.language.write_to(write)?;
Ok(())
}
/// Set the language part of the [`ICU4XLocale`].
#[diplomat::rust_link(icu::locid::Locale::try_from_bytes, FnInStruct)]
pub fn set_language(&mut self, bytes: &str) -> Result<(), ICU4XError> {
let bytes = bytes.as_bytes(); // #2520
self.0.id.language = if bytes.is_empty() {
Language::UND
} else {
Language::try_from_bytes(bytes)?
};
Ok(())
}
/// Write a string representation of [`ICU4XLocale`] region to `write`
#[diplomat::rust_link(icu::locid::Locale::id, StructField)]
pub fn region(
&self,
write: &mut diplomat_runtime::DiplomatWriteable,
) -> Result<(), ICU4XError> {
if let Some(region) = self.0.id.region {
region.write_to(write)?;
Ok(())
} else {
Err(ICU4XError::LocaleUndefinedSubtagError)
}
}
/// Set the region part of the [`ICU4XLocale`].
#[diplomat::rust_link(icu::locid::Locale::try_from_bytes, FnInStruct)]
pub fn set_region(&mut self, bytes: &str) -> Result<(), ICU4XError> {
let bytes = bytes.as_bytes(); // #2520
self.0.id.region = if bytes.is_empty() {
None
} else {
Some(Region::try_from_bytes(bytes)?)
};
Ok(())
}
/// Write a string representation of [`ICU4XLocale`] script to `write`
#[diplomat::rust_link(icu::locid::Locale::id, StructField)]
pub fn script(
&self,
write: &mut diplomat_runtime::DiplomatWriteable,
) -> Result<(), ICU4XError> {
if let Some(script) = self.0.id.script {
script.write_to(write)?;
Ok(())
} else {
Err(ICU4XError::LocaleUndefinedSubtagError)
}
}
/// Set the script part of the [`ICU4XLocale`]. Pass an empty string to remove the script.
#[diplomat::rust_link(icu::locid::Locale::try_from_bytes, FnInStruct)]
pub fn set_script(&mut self, bytes: &str) -> Result<(), ICU4XError> {
let bytes = bytes.as_bytes(); // #2520
self.0.id.script = if bytes.is_empty() {
None
} else {
Some(Script::try_from_bytes(bytes)?)
};
Ok(())
}
/// Best effort locale canonicalizer that doesn't need any data
///
/// Use ICU4XLocaleCanonicalizer for better control and functionality
#[diplomat::rust_link(icu::locid::Locale::canonicalize, FnInStruct)]
pub fn canonicalize(bytes: &str, write: &mut DiplomatWriteable) -> Result<(), ICU4XError> {
let bytes = bytes.as_bytes(); // #2520
Locale::canonicalize(bytes)?.write_to(write)?;
Ok(())
}
/// Write a string representation of [`ICU4XLocale`] to `write`
#[diplomat::rust_link(icu::locid::Locale::write_to, FnInStruct)]
pub fn to_string(
&self,
write: &mut diplomat_runtime::DiplomatWriteable,
) -> Result<(), ICU4XError> {
self.0.write_to(write)?;
Ok(())
}
#[diplomat::rust_link(icu::locid::Locale::normalizing_eq, FnInStruct)]
pub fn normalizing_eq(&self, other: &str) -> bool {
let other = other.as_bytes(); // #2520
if let Ok(other) = str::from_utf8(other) {
self.0.normalizing_eq(other)
} else {
// invalid UTF8 won't be allowed in locales anyway
false
}
}
#[diplomat::rust_link(icu::locid::Locale::strict_cmp, FnInStruct)]
pub fn strict_cmp(&self, other: &str) -> ICU4XOrdering {
let other = other.as_bytes(); // #2520
self.0.strict_cmp(other).into()
}
/// Deprecated
///
/// Use `create_from_string("en").
#[cfg(feature = "provider_test")]
#[diplomat::attr(dart, disable)]
pub fn create_en() -> Box<ICU4XLocale> {
Box::new(ICU4XLocale(icu_locid::locale!("en")))
}
/// Deprecated
///
/// Use `create_from_string("bn").
#[cfg(feature = "provider_test")]
#[diplomat::attr(dart, disable)]
pub fn create_bn() -> Box<ICU4XLocale> {
Box::new(ICU4XLocale(icu_locid::locale!("bn")))
}
}
}
impl ffi::ICU4XLocale {
pub fn to_datalocale(&self) -> icu_provider::DataLocale {
(&self.0).into()
}
}
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