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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use std::fs::File;
use std::io;
use std::io::Read;
use std::path::Path;
#[derive(Debug)]
/// Possible errors that can occur during Cargo.toml parsing.
pub enum Error {
/// Error during reading of Cargo.toml
Io(io::Error),
/// Deserialization error
Toml(toml::de::Error),
}
impl From<io::Error> for Error {
fn from(err: io::Error) -> Self {
Error::Io(err)
}
}
impl From<toml::de::Error> for Error {
fn from(err: toml::de::Error) -> Self {
Error::Toml(err)
}
}
#[derive(Clone, Deserialize, Debug)]
pub struct Lock {
pub root: Option<Package>,
pub package: Option<Vec<Package>>,
}
#[derive(Clone, Deserialize, Debug)]
pub struct Package {
pub name: String,
pub version: String,
/// A list of dependencies formatted like "NAME VERSION-OPT REGISTRY-OPT"
pub dependencies: Option<Vec<String>>,
}
/// Parse the Cargo.toml for a given path
pub fn lock(manifest_path: &Path) -> Result<Lock, Error> {
let mut s = String::new();
let mut f = File::open(manifest_path)?;
f.read_to_string(&mut s)?;
toml::from_str::<Lock>(&s).map_err(|x| x.into())
}
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