use cargo_metadata::CargoOpt;
use cargo_metadata::Dependency;
use cargo_metadata::MetadataCommand;
use cargo_metadata::Package;
use cargo_metadata::PackageId;
use crates_index::Index;
use quick_error::quick_error;
use semver::Version;
use std::collections::HashMap;
pub use cargo_metadata::Error as MetadataError;
pub use crates_index::Error as IndexError;
quick_error! {
#[derive(Debug)]
pub enum Error {
Index(err: IndexError) {
from()
display("Can't fetch index: {}", err)
}
Metadata(err: MetadataError) {
from()
display("Can't get crate metadata: {}", err)
}
}
}
pub struct UpgradesChecker {
workspace: Workspace,
index: Index,
}
struct Workspace {
packages: HashMap<PackageId, Package>,
members: Vec<PackageId>,
}
impl UpgradesChecker {
pub fn new(manifest_path: Option<&str>) -> Result<Self, Error> {
let crates = std::thread::spawn(|| {
let index = Index::new_cargo_default();
if !index.exists() {
index.retrieve()?;
} else {
let needs_update = index.path().join(".git").metadata()
.and_then(|m| m.modified()).ok()
.map_or(true, |modified| {
modified < std::time::SystemTime::now() - std::time::Duration::from_secs(3600*24)
});
if needs_update {
index.update()?;
}
}
Ok(index)
});
let workspace = Workspace::new(manifest_path)?;
let index: Result<_, IndexError> = crates.join().unwrap();
Ok(Self {
workspace,
index: index?,
})
}
}
pub struct Match<'a> {
pub dependency: &'a Dependency,
pub matches: Option<Version>,
pub latest: Version,
}
impl Workspace {
pub fn new(manifest_path: Option<&str>) -> Result<Self, MetadataError> {
let mut cmd = Self::new_metadata(manifest_path, CargoOpt::AllFeatures);
let metadata = cmd.exec().or_else(|_| {
Self::new_metadata(manifest_path, CargoOpt::NoDefaultFeatures)
}.exec())?;
Ok(Self {
packages: metadata.packages.into_iter().map(|p| (p.id.clone(), p)).collect(),
members: metadata.workspace_members,
})
}
fn new_metadata(manifest_path: Option<&str>, features: CargoOpt) -> MetadataCommand {
let mut cmd = MetadataCommand::new();
if let Some(path) = manifest_path {
cmd.manifest_path(path);
}
cmd.features(features);
cmd
}
pub fn check_package(&self, id: &PackageId, index: &Index) -> Option<(&Package, Vec<Match>)> {
let package = self.packages.get(id)?;
let deps = package.dependencies.iter().filter_map(|dep| {
let is_from_crates_io = dep.source.as_ref().map_or(false, |d| d == "registry+https://github.com/rust-lang/crates.io-index");
if !is_from_crates_io {
return None;
}
let c = index.crate_(dep.name.as_str())?;
let versions: Vec<_> = c.versions().iter().filter_map(|v| Version::parse(v.version()).ok()).collect();
let latest_stable = versions.iter().filter(|v| v.pre.is_empty()).max();
let latest_unstable = versions.iter().filter(|v| !v.pre.is_empty()).max();
let latest_usable = latest_stable.or(latest_unstable)?;
let latest_matching = versions.iter().filter(|v| dep.req.matches(v)).max();
if latest_matching >= Some(latest_usable) {
return None;
}
Some(Match {
dependency: dep,
matches: latest_matching.cloned(),
latest: latest_usable.clone(),
})
})
.collect();
Some((package, deps))
}
}
impl UpgradesChecker {
pub fn outdated_dependencies<'a>(&'a self) -> impl Iterator<Item=(&Package, Vec<Match>)> + 'a {
self.workspace.members.iter().filter_map(move |id| {
self.workspace.check_package(id, &self.index)
})
.filter(|(_, deps)| !deps.is_empty())
}
}
#[test]
fn beta_vs_stable() {
let beta11 = Version::parse("1.0.1-beta.1").unwrap();
let beta1 = Version::parse("1.0.0-beta.1").unwrap();
let v100 = Version::parse("1.0.0").unwrap();
assert!(v100 > beta1);
assert!(beta11 > beta1);
assert!(beta11 > v100);
}
#[test]
fn test_self() {
let u = UpgradesChecker::new(None).unwrap();
assert_eq!(0, u.outdated_dependencies().count());
}