mirror of
https://github.com/sile/hls_m3u8.git
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114 lines
3 KiB
Rust
114 lines
3 KiB
Rust
use std::fmt;
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use std::str::FromStr;
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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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/// # [4.3.3.5. EXT-X-PLAYLIST-TYPE]
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///
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/// The [`ExtXPlaylistType`] tag provides mutability information about the
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/// [`Media Playlist`]. It applies to the entire [`Media Playlist`].
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///
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/// [`Media Playlist`]: crate::MediaPlaylist
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/// [4.3.3.5. EXT-X-PLAYLIST-TYPE]: https://tools.ietf.org/html/rfc8216#section-4.3.3.5
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
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pub enum ExtXPlaylistType {
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/// If the [`ExtXPlaylistType`] is Event, [`Media Segment`]s
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/// can only be added to the end of the [`Media Playlist`].
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///
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/// [`Media Segment`]: crate::MediaSegment
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/// [`Media Playlist`]: crate::MediaPlaylist
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Event,
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/// If the [`ExtXPlaylistType`] is Video On Demand (Vod),
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/// the [`Media Playlist`] cannot change.
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///
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/// [`Media Playlist`]: crate::MediaPlaylist
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Vod,
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}
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impl ExtXPlaylistType {
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pub(crate) const PREFIX: &'static str = "#EXT-X-PLAYLIST-TYPE:";
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}
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/// This tag requires [`ProtocolVersion::V1`].
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impl RequiredVersion for ExtXPlaylistType {
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fn required_version(&self) -> ProtocolVersion { ProtocolVersion::V1 }
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}
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impl fmt::Display for ExtXPlaylistType {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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match &self {
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Self::Event => write!(f, "{}EVENT", Self::PREFIX),
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Self::Vod => write!(f, "{}VOD", Self::PREFIX),
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}
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}
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}
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impl FromStr for ExtXPlaylistType {
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type Err = Error;
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fn from_str(input: &str) -> Result<Self, Self::Err> {
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let input = tag(input, Self::PREFIX)?;
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match input {
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"EVENT" => Ok(Self::Event),
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"VOD" => Ok(Self::Vod),
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_ => Err(Error::custom(format!("Unknown playlist type: {:?}", input))),
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}
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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_parser() {
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assert_eq!(
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"#EXT-X-PLAYLIST-TYPE:VOD"
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.parse::<ExtXPlaylistType>()
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.unwrap(),
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ExtXPlaylistType::Vod,
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);
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assert_eq!(
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"#EXT-X-PLAYLIST-TYPE:EVENT"
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.parse::<ExtXPlaylistType>()
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.unwrap(),
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ExtXPlaylistType::Event,
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);
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assert!("#EXT-X-PLAYLIST-TYPE:H"
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.parse::<ExtXPlaylistType>()
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.is_err());
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assert!("garbage".parse::<ExtXPlaylistType>().is_err());
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}
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#[test]
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fn test_display() {
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assert_eq!(
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"#EXT-X-PLAYLIST-TYPE:VOD".to_string(),
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ExtXPlaylistType::Vod.to_string(),
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);
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assert_eq!(
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"#EXT-X-PLAYLIST-TYPE:EVENT".to_string(),
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ExtXPlaylistType::Event.to_string(),
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);
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}
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#[test]
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fn test_required_version() {
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assert_eq!(
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ExtXPlaylistType::Vod.required_version(),
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ProtocolVersion::V1
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);
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assert_eq!(
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ExtXPlaylistType::Event.required_version(),
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ProtocolVersion::V1
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);
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}
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}
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