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//
// Copyright (c) 2020-2021 science+computing ag and other contributors
//
// This program and the accompanying materials are made
// available under the terms of the Eclipse Public License 2.0
// which is available at https://www.eclipse.org/legal/epl-2.0/
//
// SPDX-License-Identifier: EPL-2.0
//
use std::convert::TryFrom;
use anyhow::Result;
use clap::ArgMatches;
use log::trace;
use crate::package::PackageName;
use crate::package::PackageVersionConstraint;
use crate::repository::Repository;
/// Implementation of the "env_of" subcommand
pub async fn env_of(matches: &ArgMatches, repo: Repository) -> Result<()> {
use filters::filter::Filter;
use std::io::Write;
let package_filter = {
let name = matches
.value_of("package_name")
.map(String::from)
.map(PackageName::from)
.unwrap();
let constraint = matches
.value_of("package_version_constraint")
.map(PackageVersionConstraint::try_from)
.unwrap()?;
trace!(
"Checking for package with name = {} and version = {:?}",
name,
constraint
);
crate::util::filters::build_package_filter_by_name(name)
.and(crate::util::filters::build_package_filter_by_version_constraint(constraint))
};
let mut stdout = std::io::stdout();
repo.packages()
.filter(|package| package_filter.filter(package))
.inspect(|pkg| trace!("Found package: {:?}", pkg))
.try_for_each(|pkg| {
if let Some(hm) = pkg.environment() {
for (key, value) in hm {
writeln!(stdout, "{} = '{}'", key, value)?;
}
} else {
writeln!(stdout, "No environment")?;
}
Ok(())
})
}
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