timezone-data 0.1.0

no_std, no-alloc parser for embedded IANA TZif timezone data: transitions, zone types, POSIX TZ rules, leap seconds, and zone metadata.
Documentation 
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//! Error type for timezone data parsing and lookup.

use core::fmt;

/// Errors produced when loading or parsing timezone data.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[non_exhaustive]
pub enum Error {
    /// The requested zone was not found in the embedded database.
    NotFound,
    /// The TZif binary data is malformed. The payload is a short reason.
    BadData(&'static str),
    /// The embedded zip archive could not be read. The payload is a short reason.
    BadZip(&'static str),
    /// A POSIX TZ string could not be parsed. The payload is a short reason.
    BadPosixTz(&'static str),
}

impl fmt::Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Error::NotFound => f.write_str("timezone not found in embedded data"),
            Error::BadData(why) => write!(f, "malformed timezone data: {why}"),
            Error::BadZip(why) => write!(f, "malformed zip archive: {why}"),
            Error::BadPosixTz(why) => write!(f, "malformed POSIX TZ string: {why}"),
        }
    }
}

impl core::error::Error for Error {}