combostew 0.3.0

Combostew is an intermediate layer between the image crate and the 'sic' and 'stew' image tool front-ends.
Documentation 
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use std::process;

use crate::config::{Config, SelectedLicenses};
use crate::processor::ProcessWithConfig;

#[derive(Debug, Default)]
pub struct LicenseDisplayProcessor<'a> {
    self_license: &'a str,
    dependency_licenses: &'a str,
}

impl<'a> LicenseDisplayProcessor<'a> {
    pub fn new(self_license: &'a str, dependency_licenses: &'a str) -> LicenseDisplayProcessor<'a> {
        LicenseDisplayProcessor {
            self_license,
            dependency_licenses,
        }
    }
}

impl<'a> LicenseDisplayProcessor<'a> {
    fn print_licenses(&self, slice: &[SelectedLicenses], tool_name: &str) {
        for item in slice {
            match item {
                SelectedLicenses::ThisSoftware => {
                    println!("{} image tools license:\n\n{}\n\n", tool_name, &self.self_license);
                }
                SelectedLicenses::Dependencies => println!("{}", &self.dependency_licenses),
            };
        }

        if !slice.is_empty() {
            process::exit(0);
        }
    }
}

impl ProcessWithConfig<()> for LicenseDisplayProcessor<'_> {
    fn process(&self, config: &Config) {
        self.print_licenses(&config.licenses, &config.tool_name);
    }
}