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use std::fmt::{self, Formatter};
use std::hash;
use std::slice;
use std::path::{Path, PathBuf};
use semver::Version;
use core::{Dependency, Manifest, PackageId, SourceId, Registry, Target, Summary, Metadata};
use ops;
use core::dependency::SerializedDependency;
use util::{CargoResult, graph, Config};
use rustc_serialize::{Encoder,Encodable};
use core::source::Source;
#[derive(Clone, Debug)]
pub struct Package {
manifest: Manifest,
manifest_path: PathBuf,
}
#[derive(RustcEncodable)]
struct SerializedPackage {
name: String,
version: String,
dependencies: Vec<SerializedDependency>,
targets: Vec<Target>,
manifest_path: String,
}
impl Encodable for Package {
fn encode<S: Encoder>(&self, s: &mut S) -> Result<(), S::Error> {
let manifest = self.manifest();
let summary = manifest.summary();
let package_id = summary.package_id();
SerializedPackage {
name: package_id.name().to_string(),
version: package_id.version().to_string(),
dependencies: summary.dependencies().iter().map(|d| {
SerializedDependency::from_dependency(d)
}).collect(),
targets: manifest.targets().to_vec(),
manifest_path: self.manifest_path.display().to_string()
}.encode(s)
}
}
impl Package {
pub fn new(manifest: Manifest,
manifest_path: &Path) -> Package {
Package {
manifest: manifest,
manifest_path: manifest_path.to_path_buf(),
}
}
pub fn for_path(manifest_path: &Path, config: &Config) -> CargoResult<Package> {
let path = manifest_path.parent().unwrap();
let source_id = try!(SourceId::for_path(path));
let (pkg, _) = try!(ops::read_package(&manifest_path, &source_id,
config));
Ok(pkg)
}
pub fn dependencies(&self) -> &[Dependency] { self.manifest.dependencies() }
pub fn manifest(&self) -> &Manifest { &self.manifest }
pub fn manifest_path(&self) -> &Path { &self.manifest_path }
pub fn name(&self) -> &str { self.package_id().name() }
pub fn package_id(&self) -> &PackageId { self.manifest.package_id() }
pub fn root(&self) -> &Path { self.manifest_path.parent().unwrap() }
pub fn summary(&self) -> &Summary { self.manifest.summary() }
pub fn targets(&self) -> &[Target] { self.manifest().targets() }
pub fn version(&self) -> &Version { self.package_id().version() }
pub fn has_custom_build(&self) -> bool {
self.targets().iter().any(|t| t.is_custom_build())
}
pub fn generate_metadata(&self) -> Metadata {
self.package_id().generate_metadata(self.root())
}
}
impl fmt::Display for Package {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.summary().package_id())
}
}
impl PartialEq for Package {
fn eq(&self, other: &Package) -> bool {
self.package_id() == other.package_id()
}
}
impl Eq for Package {}
impl hash::Hash for Package {
fn hash<H: hash::Hasher>(&self, into: &mut H) {
if self.package_id().source_id().is_path() {
(0, self.root(), self.name(), self.package_id().version()).hash(into)
} else {
(1, self.package_id()).hash(into)
}
}
}
#[derive(PartialEq,Clone,Debug)]
pub struct PackageSet {
packages: Vec<Package>,
}
impl PackageSet {
pub fn new(packages: &[Package]) -> PackageSet {
PackageSet { packages: packages.to_vec() }
}
pub fn len(&self) -> usize {
self.packages.len()
}
pub fn pop(&mut self) -> Package {
self.packages.pop().expect("PackageSet.pop: empty set")
}
pub fn get(&self, name: &str) -> &Package {
self.packages.iter().find(|pkg| name == pkg.name())
.expect("PackageSet.get: empty set")
}
pub fn get_all(&self, names: &[&str]) -> Vec<&Package> {
names.iter().map(|name| self.get(*name) ).collect()
}
pub fn packages(&self) -> &[Package] { &self.packages }
pub fn sort(&self) -> Option<PackageSet> {
let mut graph = graph::Graph::new();
for pkg in self.packages.iter() {
let deps: Vec<&str> = pkg.dependencies().iter()
.map(|dep| dep.name())
.collect();
graph.add(pkg.name(), &deps);
}
let pkgs = match graph.sort() {
Some(pkgs) => pkgs,
None => return None,
};
let pkgs = pkgs.iter().map(|name| {
self.get(*name).clone()
}).collect();
Some(PackageSet {
packages: pkgs
})
}
pub fn iter(&self) -> slice::Iter<Package> {
self.packages.iter()
}
}
impl Registry for PackageSet {
fn query(&mut self, name: &Dependency) -> CargoResult<Vec<Summary>> {
Ok(self.packages.iter()
.filter(|pkg| name.name() == pkg.name())
.map(|pkg| pkg.summary().clone())
.collect())
}
}