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use std::path::{Path, PathBuf};
use std::process::{Command, Stdio};
pub(crate) fn get_host_triple(rustc: &Path) -> String {
let version_info =
Command::new(rustc).stderr(Stdio::inherit()).args(&["-vV"]).output().unwrap().stdout;
String::from_utf8(version_info)
.unwrap()
.lines()
.to_owned()
.find(|line| line.starts_with("host"))
.unwrap()
.split(":")
.nth(1)
.unwrap()
.trim()
.to_owned()
}
pub(crate) fn get_toolchain_name() -> String {
let active_toolchain = Command::new("rustup")
.stderr(Stdio::inherit())
.args(&["show", "active-toolchain"])
.output()
.unwrap()
.stdout;
String::from_utf8(active_toolchain).unwrap().trim().split_once(' ').unwrap().0.to_owned()
}
pub(crate) fn get_cargo_path() -> PathBuf {
if let Ok(cargo) = std::env::var("CARGO") {
return PathBuf::from(cargo);
}
let cargo_path = Command::new("rustup")
.stderr(Stdio::inherit())
.args(&["which", "cargo"])
.output()
.unwrap()
.stdout;
Path::new(String::from_utf8(cargo_path).unwrap().trim()).to_owned()
}
pub(crate) fn get_rustc_path() -> PathBuf {
if let Ok(rustc) = std::env::var("RUSTC") {
return PathBuf::from(rustc);
}
let rustc_path = Command::new("rustup")
.stderr(Stdio::inherit())
.args(&["which", "rustc"])
.output()
.unwrap()
.stdout;
Path::new(String::from_utf8(rustc_path).unwrap().trim()).to_owned()
}
pub(crate) fn get_rustdoc_path() -> PathBuf {
if let Ok(rustdoc) = std::env::var("RUSTDOC") {
return PathBuf::from(rustdoc);
}
let rustc_path = Command::new("rustup")
.stderr(Stdio::inherit())
.args(&["which", "rustdoc"])
.output()
.unwrap()
.stdout;
Path::new(String::from_utf8(rustc_path).unwrap().trim()).to_owned()
}
pub(crate) fn get_default_sysroot(rustc: &Path) -> PathBuf {
let default_sysroot = Command::new(rustc)
.stderr(Stdio::inherit())
.args(&["--print", "sysroot"])
.output()
.unwrap()
.stdout;
Path::new(String::from_utf8(default_sysroot).unwrap().trim()).to_owned()
}
// FIXME call once for each target and pass result around in struct
pub(crate) fn get_file_name(rustc: &Path, crate_name: &str, crate_type: &str) -> String {
let file_name = Command::new(rustc)
.stderr(Stdio::inherit())
.args(&[
"--crate-name",
crate_name,
"--crate-type",
crate_type,
"--print",
"file-names",
"-",
])
.output()
.unwrap()
.stdout;
let file_name = String::from_utf8(file_name).unwrap().trim().to_owned();
assert!(!file_name.contains('\n'));
assert!(file_name.contains(crate_name));
file_name
}
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