mirror of
https://github.com/sile/hls_m3u8.git
synced 2024-05-18 08:22:59 +00:00
62 lines
1.8 KiB
Rust
62 lines
1.8 KiB
Rust
use crate::types::{PlaylistType, ProtocolVersion};
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use crate::{Error, ErrorKind, Result};
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use std::fmt;
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use std::str::FromStr;
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use trackable::error::ErrorKindExt;
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/// [4.3.3.5. EXT-X-PLAYLIST-TYPE]
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///
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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)]
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pub struct ExtXPlaylistType {
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playlist_type: PlaylistType,
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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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/// Makes a new `ExtXPlaylistType` tag.
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pub fn new(playlist_type: PlaylistType) -> Self {
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ExtXPlaylistType { playlist_type }
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}
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/// Returns the type of the associated media playlist.
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pub fn playlist_type(self) -> PlaylistType {
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self.playlist_type
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}
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/// Returns the protocol compatibility version that this tag requires.
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pub fn requires_version(self) -> ProtocolVersion {
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ProtocolVersion::V1
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}
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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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write!(f, "{}{}", Self::PREFIX, self.playlist_type)
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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(s: &str) -> Result<Self> {
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track_assert!(s.starts_with(Self::PREFIX), ErrorKind::InvalidInput);
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let playlist_type = may_invalid!(s.split_at(Self::PREFIX.len()).1.parse())?;
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Ok(ExtXPlaylistType { playlist_type })
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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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#[test]
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fn ext_x_playlist_type() {
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let tag = ExtXPlaylistType::new(PlaylistType::Vod);
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let text = "#EXT-X-PLAYLIST-TYPE:VOD";
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assert_eq!(text.parse().ok(), Some(tag));
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assert_eq!(tag.to_string(), text);
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assert_eq!(tag.requires_version(), ProtocolVersion::V1);
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}
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}
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