mirror of
https://github.com/sile/hls_m3u8.git
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69 lines
1.7 KiB
Rust
69 lines
1.7 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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/// Indicates the Media Sequence Number of the first `MediaSegment` that
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/// appears in a `MediaPlaylist`.
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#[derive(Default, Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
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pub(crate) struct ExtXMediaSequence(pub usize);
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impl ExtXMediaSequence {
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pub(crate) const PREFIX: &'static str = "#EXT-X-MEDIA-SEQUENCE:";
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}
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/// This tag requires [`ProtocolVersion::V1`].
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impl RequiredVersion for ExtXMediaSequence {
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fn required_version(&self) -> ProtocolVersion { ProtocolVersion::V1 }
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}
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impl fmt::Display for ExtXMediaSequence {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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//
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write!(f, "{}{}", Self::PREFIX, self.0)
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}
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}
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impl TryFrom<&str> for ExtXMediaSequence {
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type Error = Error;
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fn try_from(input: &str) -> Result<Self, Self::Error> {
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let input = tag(input, Self::PREFIX)?;
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let seq_num = input.parse().map_err(|e| Error::parse_int(input, e))?;
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Ok(Self(seq_num))
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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!(
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ExtXMediaSequence(123).to_string(),
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"#EXT-X-MEDIA-SEQUENCE:123".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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ExtXMediaSequence(123).required_version(),
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ProtocolVersion::V1
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);
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}
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#[test]
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fn test_parser() {
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assert_eq!(
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ExtXMediaSequence(123),
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ExtXMediaSequence::try_from("#EXT-X-MEDIA-SEQUENCE:123").unwrap()
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);
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}
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}
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