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https://github.com/sile/hls_m3u8.git
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79 lines
2.1 KiB
Rust
79 lines
2.1 KiB
Rust
use crate::{Error, ErrorKind, Result};
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use std::fmt;
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use std::str::{self, FromStr};
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use trackable::error::ErrorKindExt;
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/// Decimal resolution.
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///
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/// See: [4.2. Attribute Lists]
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///
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/// [4.2. Attribute Lists]: https://tools.ietf.org/html/rfc8216#section-4.2
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
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pub struct DecimalResolution {
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/// Horizontal pixel dimension.
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pub width: usize,
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/// Vertical pixel dimension.
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pub height: usize,
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}
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impl fmt::Display for DecimalResolution {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}x{}", self.width, self.height)
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}
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}
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impl FromStr for DecimalResolution {
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type Err = Error;
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fn from_str(s: &str) -> Result<Self> {
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let mut tokens = s.splitn(2, 'x');
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let width = tokens.next().expect("Never fails");
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let height = track_assert_some!(tokens.next(), ErrorKind::InvalidInput);
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Ok(DecimalResolution {
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width: track!(width.parse().map_err(|e| ErrorKind::InvalidInput.cause(e)))?,
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height: track!(height.parse().map_err(|e| ErrorKind::InvalidInput.cause(e)))?,
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})
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_display() {
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let decimal_resolution = DecimalResolution {
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width: 1920,
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height: 1080,
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};
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assert_eq!(decimal_resolution.to_string(), "1920x1080".to_string());
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let decimal_resolution = DecimalResolution {
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width: 1280,
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height: 720,
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};
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assert_eq!(decimal_resolution.to_string(), "1280x720".to_string());
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}
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#[test]
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fn test_parse() {
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let decimal_resolution = DecimalResolution {
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width: 1920,
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height: 1080,
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};
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assert_eq!(
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decimal_resolution,
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"1920x1080".parse::<DecimalResolution>().unwrap()
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);
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let decimal_resolution = DecimalResolution {
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width: 1280,
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height: 720,
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};
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assert_eq!(
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decimal_resolution,
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"1280x720".parse::<DecimalResolution>().unwrap()
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);
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}
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}
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