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use crate::store::StorePath;
use crate::Error;
use std::collections::BTreeSet;
#[derive(Clone, Debug)]
pub struct PathInfo {
pub path: StorePath,
pub references: BTreeSet<StorePath>,
pub nar_size: u64,
pub deriver: Option<StorePath>,
// Additional binary cache info.
pub url: Option<String>,
pub compression: Option<String>,
pub file_size: Option<u64>,
}
impl PathInfo {
pub fn parse_nar_info(nar_info: &str, store_dir: &str) -> Result<Self, Error> {
let mut path = None;
let mut references = BTreeSet::new();
let mut nar_size = None;
let mut deriver = None;
let mut url = None;
let mut compression = None;
let mut file_size = None;
for line in nar_info.lines() {
let colon = line.find(':').ok_or(Error::BadNarInfo)?;
let (name, value) = line.split_at(colon);
if !value.starts_with(": ") {
return Err(Error::BadNarInfo);
}
let value = &value[2..];
if name == "StorePath" {
path = Some(StorePath::new(std::path::Path::new(value), store_dir)?);
} else if name == "NarSize" {
nar_size = Some(u64::from_str_radix(value, 10).map_err(|_| Error::BadNarInfo)?);
} else if name == "References" {
if !value.is_empty() {
for r in value.split(' ') {
references.insert(StorePath::new_from_base_name(r)?);
}
}
} else if name == "Deriver" {
deriver = Some(StorePath::new_from_base_name(value)?);
} else if name == "URL" {
url = Some(value.into());
} else if name == "Compression" {
compression = Some(value.into());
} else if name == "FileSize" {
file_size = Some(u64::from_str_radix(value, 10).map_err(|_| Error::BadNarInfo)?);
}
}
Ok(PathInfo {
path: path.ok_or(Error::BadNarInfo)?,
references,
nar_size: nar_size.ok_or(Error::BadNarInfo)?,
deriver,
url: Some(url.ok_or(Error::BadNarInfo)?),
compression,
file_size,
})
}
}
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