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