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use std::path::{Path, PathBuf};
use std::process::{Command, Stdio};
pub(crate) fn get_rustc_version() -> String {
let version_info =
Command::new("rustc").stderr(Stdio::inherit()).args(&["-V"]).output().unwrap().stdout;
String::from_utf8(version_info).unwrap()
}
pub(crate) fn get_host_triple() -> 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_rustc_path() -> PathBuf {
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_default_sysroot() -> 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()
}
pub(crate) fn get_file_name(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
}
/// Similar to `get_file_name`, but converts any dashes (`-`) in the `crate_name` to
/// underscores (`_`). This is specially made for the the rustc and cargo wrappers
/// which have a dash in the name, and that is not allowed in a crate name.
pub(crate) fn get_wrapper_file_name(crate_name: &str, crate_type: &str) -> String {
let crate_name = crate_name.replace('-', "_");
let wrapper_name = get_file_name(&crate_name, crate_type);
wrapper_name.replace('_', "-")
}
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