mparsed/src/structs.rs

113 lines
4.3 KiB
Rust

use helpers::*;
use serde::Deserialize;
use std::time::Duration;
#[derive(Deserialize, Clone, Debug, Default, PartialEq)]
#[serde(default)]
pub struct Track {
pub file: String,
#[serde(rename = "artistsort")]
pub artist_sort: Option<String>,
#[serde(rename = "albumartist")]
pub album_artist: Option<String>,
#[serde(rename = "albumsort")]
pub album_sort: Option<String>,
#[serde(rename = "albumartistsort")]
pub album_artist_sort: Option<String>,
#[serde(deserialize_with = "de_string_or_vec")]
#[serde(rename = "performer")]
pub performers: Vec<String>,
pub genre: Option<String>,
pub title: Option<String>,
#[serde(deserialize_with = "de_position")]
pub track: Option<Position>,
pub album: Option<String>,
pub artist: Option<String>,
pub pos: u32,
pub id: u32,
// TODO: use proper time here
#[serde(rename = "last-modified")]
pub last_modified: Option<String>,
#[serde(rename = "originaldate")]
pub original_date: Option<u16>,
// probably not needed. it’s just the duration but as an int
// pub time: u16,
pub format: Option<String>,
#[serde(deserialize_with = "de_time_float")]
pub duration: Duration,
pub label: Option<String>,
pub date: Option<u16>,
#[serde(deserialize_with = "de_position")]
pub disc: Option<Position>,
pub musicbraiz_trackid: Option<String>,
pub musicbrainz_albumid: Option<String>,
pub musicbrainz_albumartistid: Option<String>,
pub musicbrainz_artistid: Option<String>,
pub musicbrainz_releasetrackid: Option<String>,
pub musicbrainz_trackid: Option<String>,
pub composer: Option<String>,
}
/// The position of an item in a list with an optional total length.
/// Can be used for e.g. track number,
/// where `Position { 3, 12 }` represents track 3 of a CD with 12 tracks,
/// or disc numbers in a multi-disc set.
#[derive(Deserialize, Clone, Debug, Default, PartialEq)]
pub struct Position {
pub item_position: u16,
pub total_items: Option<u16>,
}
/// Deserialization helpers to handle the quirks of mpd’s output.
mod helpers {
use super::*;
use crate::SEPARATOR;
use serde::{de, Deserialize};
use std::{str::FromStr, time::Duration};
/// Deserialize time from an integer that represents the seconds.
/// mpd uses int for the database stats (e.g. total time played).
pub fn de_time_int<'de, D>(deserializer: D) -> Result<Duration, D::Error>
where D: de::Deserializer<'de> {
u64::deserialize(deserializer).map(Duration::from_secs)
}
/// Deserialize time from a float that represents the seconds.
/// mpd uses floats for the current status (e.g. time elapsed in song).
pub fn de_time_float<'de, D>(deserializer: D) -> Result<Duration, D::Error>
where D: de::Deserializer<'de> {
f64::deserialize(deserializer).map(Duration::from_secs_f64)
}
pub fn de_string_or_vec<'de, D>(deserializer: D) -> Result<Vec<String>, D::Error>
where D: de::Deserializer<'de> {
String::deserialize(deserializer).map(|s| s.split(SEPARATOR).map(std::string::String::from).collect())
}
/// mpd uses bints (0 or 1) to represent booleans,
/// so we need a special parser for those.
pub fn de_bint<'de, D>(deserializer: D) -> Result<bool, D::Error>
where D: de::Deserializer<'de> {
match u8::deserialize(deserializer)? {
0 => Ok(false),
1 => Ok(true),
n => Err(de::Error::invalid_value(de::Unexpected::Unsigned(n as u64), &"zero or one")),
}
}
/// Deserialize a position with an optional total length.
/// The input string here is either a number or two numbers separated by `SEPARATOR`.
pub fn de_position<'de, D>(deserializer: D) -> Result<Option<Position>, D::Error>
where D: de::Deserializer<'de> {
let s = String::deserialize(deserializer)?;
let mut ints = s.split(SEPARATOR).filter_map(|s| u16::from_str(s).ok());
if let Some(n) = ints.next() {
return Ok(Some(Position {
item_position: n,
total_items: ints.next(),
}));
}
Ok(None)
}
}