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https://github.com/sile/hls_m3u8.git
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71 lines
2 KiB
Rust
71 lines
2 KiB
Rust
use crate::types::{ByteRange, 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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/// [4.3.2.2. EXT-X-BYTERANGE]
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///
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/// [4.3.2.2. EXT-X-BYTERANGE]: https://tools.ietf.org/html/rfc8216#section-4.3.2.2
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
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pub struct ExtXByteRange {
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range: ByteRange,
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}
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impl ExtXByteRange {
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pub(crate) const PREFIX: &'static str = "#EXT-X-BYTERANGE:";
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/// Makes a new `ExtXByteRange` tag.
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pub fn new(range: ByteRange) -> Self {
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ExtXByteRange { range }
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}
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/// Returns the range of the associated media segment.
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pub fn range(&self) -> ByteRange {
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self.range
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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::V4
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}
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}
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impl fmt::Display for ExtXByteRange {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}{}", Self::PREFIX, self.range)
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}
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}
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impl FromStr for ExtXByteRange {
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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 range = may_invalid!(s.split_at(Self::PREFIX.len()).1.parse())?;
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Ok(ExtXByteRange { range })
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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_byterange() {
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let tag = ExtXByteRange::new(ByteRange {
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length: 3,
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start: None,
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});
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assert_eq!("#EXT-X-BYTERANGE:3".parse().ok(), Some(tag));
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assert_eq!(tag.to_string(), "#EXT-X-BYTERANGE:3");
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assert_eq!(tag.requires_version(), ProtocolVersion::V4);
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let tag = ExtXByteRange::new(ByteRange {
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length: 3,
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start: Some(5),
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});
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assert_eq!("#EXT-X-BYTERANGE:3@5".parse().ok(), Some(tag));
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assert_eq!(tag.to_string(), "#EXT-X-BYTERANGE:3@5");
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assert_eq!(tag.requires_version(), ProtocolVersion::V4);
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}
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}
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