Expand description
Query a program for supported features.
The obtain::obtain_features
function queries a program for the features that it supports
via various methods (e.g. running it with the --features
command-line option) and allows other programs to check for
the presence and, possibly, versions of specific features.
use feature_check::defs::{Config, Obtained};
use feature_check::obtain;
match obtain::obtain_features(&Config::default()
.with_program("confget".to_string()))? {
Obtained::NotSupported => eprintln!("Feature query not supported"),
Obtained::Failed(err) => eprintln!("Could not query for features: {err}"),
Obtained::Features(res) => {
let mut features: Vec<&String> = res.keys().collect();
features.sort_unstable();
for name in &features {
println!("{name}");
}
},
other => bail!("Unexpected obtain_features() result: {:?}", other)
}