68 lines
1.8 KiB
Rust
68 lines
1.8 KiB
Rust
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//! Crate wrapping what we need from ICU’s C API for JIDs.
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//!
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//! See http://site.icu-project.org/
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use crate::bindings::{icu_error_code_to_name, UErrorCode};
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use std::ffi::CStr;
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/// Errors this library can produce.
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#[derive(Debug)]
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pub enum Error {
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/// An error produced by one of the ICU functions.
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Icu(String),
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/// An error produced by one of the IDNA2008 ICU functions.
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Idna(u32),
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/// Some ICU function didn’t produce a valid UTF-8 string, should never happen.
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Utf8(std::string::FromUtf8Error),
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/// Some ICU function didn’t produce a valid UTF-8 string, should never happen.
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Utf16(std::char::DecodeUtf16Error),
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/// Some string was too long for its profile in JID.
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TooLong,
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}
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impl PartialEq for Error {
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fn eq(&self, other: &Self) -> bool {
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match (self, other) {
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(Error::Icu(s1), Error::Icu(s2)) => s1 == s2,
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(Error::Idna(s1), Error::Idna(s2)) => s1 == s2,
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// TODO: compare by something here?
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(Error::Utf8(_s1), Error::Utf8(_s2)) => true,
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(Error::Utf16(_s1), Error::Utf16(_s2)) => true,
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(Error::TooLong, Error::TooLong) => true,
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_ => false,
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}
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}
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}
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impl Eq for Error {}
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impl Error {
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pub(crate) fn from_icu_code(err: UErrorCode) -> Error {
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let ptr = unsafe { icu_error_code_to_name(err) };
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let c_str = unsafe { CStr::from_ptr(ptr) };
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Error::Icu(c_str.to_string_lossy().into_owned())
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}
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}
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impl From<UErrorCode> for Error {
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fn from(err: UErrorCode) -> Error {
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Error::from_icu_code(err)
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}
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}
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impl From<std::string::FromUtf8Error> for Error {
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fn from(err: std::string::FromUtf8Error) -> Error {
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Error::Utf8(err)
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}
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}
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impl From<std::char::DecodeUtf16Error> for Error {
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fn from(err: std::char::DecodeUtf16Error) -> Error {
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Error::Utf16(err)
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}
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}
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