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rustc_tools_util: try to handle case of not having CFG_RELEASE_CHANNEL better when getting compiler channel.

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This commit is contained in:
Matthias Krüger 2019-04-28 20:07:49 +02:00
parent 78d13e007f
commit 8012b91198
2 changed files with 33 additions and 10 deletions
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4
rustc_tools_util/README.md
View file

@ -30,6 +30,10 @@ fn main() {
"cargo:rustc-env=COMMIT_DATE={}", "cargo:rustc-env=COMMIT_DATE={}",
rustc_tools_util::get_commit_date().unwrap_or_default() rustc_tools_util::get_commit_date().unwrap_or_default()
); );
println!(
"cargo:rustc-env=RUSTC_RELEASE_CHANNEL={}",
rustc_tools_util::get_channel_from_compiler_output().unwrap_or_default()
);
} }
```` ````

39
rustc_tools_util/src/lib.rs
View file

@ -8,7 +8,7 @@ macro_rules! get_version_info {
let patch = env!("CARGO_PKG_VERSION_PATCH").parse::<u16>().unwrap(); let patch = env!("CARGO_PKG_VERSION_PATCH").parse::<u16>().unwrap();
let crate_name = String::from(env!("CARGO_PKG_NAME")); let crate_name = String::from(env!("CARGO_PKG_NAME"));
let host_compiler = $crate::get_channel(); let host_compiler = option_env!("RUSTC_RELEASE_CHANNEL").map(str::to_string);
let commit_hash = option_env!("GIT_HASH").map(str::to_string); let commit_hash = option_env!("GIT_HASH").map(str::to_string);
let commit_date = option_env!("COMMIT_DATE").map(str::to_string); let commit_date = option_env!("COMMIT_DATE").map(str::to_string);
@ -79,15 +79,6 @@ impl std::fmt::Debug for VersionInfo {
} }
} }
pub fn get_channel() -> Option<String> {
if let Ok(channel) = env::var("CFG_RELEASE_CHANNEL") {
Some(channel)
} else {
// we could ask ${RUSTC} -Vv and do some parsing and find out
Some(String::from("nightly"))
}
}
pub fn get_commit_hash() -> Option<String> { pub fn get_commit_hash() -> Option<String> {
std::process::Command::new("git") std::process::Command::new("git")
.args(&["rev-parse", "--short", "HEAD"]) .args(&["rev-parse", "--short", "HEAD"])
@ -104,6 +95,34 @@ pub fn get_commit_date() -> Option<String> {
.and_then(|r| String::from_utf8(r.stdout).ok()) .and_then(|r| String::from_utf8(r.stdout).ok())
} }
pub fn get_channel() -> Option<String> {
match env::var("CFG_RELEASE_CHANNEL") {
Ok(channel) => Some(channel),
Err(_) => {
// if that failed, try to ask rustc -V, do some parsing and find out
match std::process::Command::new("rustc")
.arg("-V")
.output()
.ok()
.and_then(|r| String::from_utf8(r.stdout).ok())
{
Some(rustc_output) => {
if rustc_output.contains("beta") {
Some(String::from("beta"))
} else if rustc_output.contains("stable") {
Some(String::from("stable"))
} else {
// default to nightly if we fail to parse
Some(String::from("nightly"))
}
},
// default to nightly
None => Some(String::from("nightly")),
}
},
}
}
#[cfg(test)] #[cfg(test)]
mod test { mod test {
use super::*; use super::*;