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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 anyhow::anyhow;
use anyhow::Result;
use lazy_static::lazy_static;
use regex::Regex;
use crate::package::PackageName;
use crate::package::PackageVersionConstraint;
mod build;
pub use build::*;
mod runtime;
pub use runtime::*;
pub trait StringEqual {
fn str_equal(&self, s: &str) -> bool;
}
pub trait ParseDependency {
fn parse_as_name_and_version(&self) -> Result<(PackageName, PackageVersionConstraint)>;
}
lazy_static! {
pub(in crate::package::dependency) static ref DEPENDENCY_PARSING_RE: Regex =
Regex::new("^(?P<name>[[:alpha:]]([[[:alnum:]]-_])*) (?P<version>([\\*=><])?[[:alnum:]]([[[:alnum:]][[:punct:]]])*)$").unwrap();
}
/// Helper function for the actual implementation of the ParseDependency trait.
///
/// TODO: Reimplement using pom crate
pub(in crate::package::dependency) fn parse_package_dependency_string_into_name_and_version(
s: &str,
) -> Result<(PackageName, PackageVersionConstraint)> {
let caps = crate::package::dependency::DEPENDENCY_PARSING_RE
.captures(s)
.ok_or_else(|| {
anyhow!(
"Could not parse into package name and package version constraint: '{}'",
s
)
})?;
let name = caps
.name("name")
.ok_or_else(|| anyhow!("Could not parse name: '{}'", s))?;
let vers = caps
.name("version")
.ok_or_else(|| anyhow!("Could not parse version: '{}'", s))?;
let v = PackageVersionConstraint::parser().parse(vers.as_str().as_bytes())?;
Ok((PackageName::from(String::from(name.as_str())), v))
}
#[cfg(test)]
mod tests {
use super::*;
use crate::package::PackageName;
use crate::package::PackageVersion;
//
// helper functions
//
fn name(s: &'static str) -> PackageName {
PackageName::from(String::from(s))
}
fn exact(s: &'static str) -> PackageVersion {
PackageVersion::from(String::from(s))
}
//
// tests
//
#[test]
fn test_dependency_conversion_1() {
let s = "vim =8.2";
let d = Dependency::from(String::from(s));
let (n, c) = d.parse_as_name_and_version().unwrap();
assert_eq!(n, name("vim"));
assert_eq!(
c,
PackageVersionConstraint::from_version(String::from("="), exact("8.2"))
);
}
#[test]
fn test_dependency_conversion_2() {
let s = "gtk15 =1b";
let d = Dependency::from(String::from(s));
let (n, c) = d.parse_as_name_and_version().unwrap();
assert_eq!(n, name("gtk15"));
assert_eq!(
c,
PackageVersionConstraint::from_version(String::from("="), exact("1b"))
);
}
}
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