mirror of
https://github.com/sile/hls_m3u8.git
synced 2024-05-03 09:09:06 +00:00
61 lines
1.5 KiB
Rust
61 lines
1.5 KiB
Rust
use std::convert::TryFrom;
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use std::fmt;
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use crate::types::ProtocolVersion;
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use crate::utils::tag;
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use crate::{Error, RequiredVersion};
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/// The [`ExtM3u`] tag indicates that the file is an **Ext**ended **[`M3U`]**
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/// Playlist file.
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/// It is the at the start of every [`MediaPlaylist`] and [`MasterPlaylist`].
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///
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/// [`MediaPlaylist`]: crate::MediaPlaylist
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/// [`MasterPlaylist`]: crate::MasterPlaylist
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/// [`M3U`]: https://en.wikipedia.org/wiki/M3U
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#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug, Default)]
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pub(crate) struct ExtM3u;
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impl ExtM3u {
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pub(crate) const PREFIX: &'static str = "#EXTM3U";
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}
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/// This tag requires [`ProtocolVersion::V1`].
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impl RequiredVersion for ExtM3u {
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fn required_version(&self) -> ProtocolVersion { ProtocolVersion::V1 }
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}
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impl fmt::Display for ExtM3u {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!(f, "{}", Self::PREFIX) }
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}
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impl TryFrom<&str> for ExtM3u {
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type Error = Error;
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fn try_from(input: &str) -> Result<Self, Self::Error> {
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tag(input, Self::PREFIX)?;
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Ok(Self)
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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use pretty_assertions::assert_eq;
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#[test]
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fn test_display() {
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assert_eq!(ExtM3u.to_string(), "#EXTM3U".to_string());
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}
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#[test]
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fn test_parser() {
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assert_eq!(ExtM3u::try_from("#EXTM3U").unwrap(), ExtM3u);
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assert!(ExtM3u::try_from("#EXTM2U").is_err());
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}
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#[test]
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fn test_required_version() {
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assert_eq!(ExtM3u.required_version(), ProtocolVersion::V1);
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}
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}
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