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#[cfg(test)]
#[path = "toolchain_test.rs"]
mod toolchain_test;
use cargo_metadata::Version;
use semver::Prerelease;
use crate::types::{CommandSpec, ToolchainSpecifier};
use std::process::{Command, Stdio};
pub(crate) fn wrap_command(
toolchain: &ToolchainSpecifier,
command: &str,
args: &Option<Vec<String>>,
) -> CommandSpec {
check_toolchain(toolchain);
let mut rustup_args = vec![
"run".to_string(),
toolchain.channel().to_string(),
command.to_string(),
];
match args {
Some(array) => {
for arg in array.iter() {
rustup_args.push(arg.to_string());
}
}
None => (),
};
CommandSpec {
command: "rustup".to_string(),
args: Some(rustup_args),
}
}
fn get_specified_min_version(toolchain: &ToolchainSpecifier) -> Option<Version> {
let min_version = toolchain.min_version()?;
let spec_min_version = min_version.parse::<Version>();
if let Err(_) = spec_min_version {
warn!("Unable to parse min version value: {}", &min_version);
}
spec_min_version.ok()
}
fn check_toolchain(toolchain: &ToolchainSpecifier) {
let output = Command::new("rustup")
.args(&["run", toolchain.channel(), "rustc", "--version"])
.stderr(Stdio::null())
.stdout(Stdio::piped())
.output()
.expect("Failed to check rustup toolchain");
if !output.status.success() {
error!(
"Missing toolchain {}! Please install it using rustup.",
&toolchain
);
return;
}
let spec_min_version = get_specified_min_version(toolchain);
if let Some(ref spec_min_version) = spec_min_version {
let rustc_version = String::from_utf8_lossy(&output.stdout);
let rustc_version = rustc_version
.split(" ")
.nth(1)
.expect("expected a version in rustc output");
let mut rustc_version = rustc_version
.parse::<Version>()
.expect("unexpected version format");
rustc_version.pre = Prerelease::EMPTY;
if &rustc_version < spec_min_version {
error!(
"Installed toolchain {} is required to satisfy version {}, found {}! Please upgrade it using rustup.",
toolchain.channel(),
&spec_min_version,
rustc_version,
);
}
}
}