usm/src/lib/Licence.vala

using Invercargill;
namespace Usm {

    public enum LicenceCategory {
        PROPRIETARY = 0,
        SOURCE_AVAILABLE = 1,
        OPEN_SOURCE = 2,
        LIBRE = 3;

        public static LicenceCategory from_string(string str) throws ManifestError {
            switch (str) {
                case "libre":
                    return LicenceCategory.LIBRE;
                case "open-source":
                    return LicenceCategory.OPEN_SOURCE;
                case "source-available":
                    return LicenceCategory.SOURCE_AVAILABLE;
                case "proprietary":
                    return LicenceCategory.PROPRIETARY;
                default:
                    throw new ManifestError.INVALID_LICENCE_CATEGORY(@"Unknown licence category \"$str\".");
            }
        }

        public string to_string() {
            switch (this) {
                case LicenceCategory.LIBRE:
                    return "libre";
                case LicenceCategory.OPEN_SOURCE:
                    return "open-source";
                case LicenceCategory.SOURCE_AVAILABLE:
                    return "source-available";
                case LicenceCategory.PROPRIETARY:
                    return "proprietary";
                default:
                    assert_not_reached();
            }
        }
    }

    public class Licence {
        public string name { get; set; }
        public LicenceCategory category { get; set; }
        public string text_path { get; set; }

        public static PropertyMapper<Licence> get_mapper() {
            return once<PropertyMapper<Licence>>(() =>  new PropertyMapperBuilder<Licence>()
                .map<string>("name", o => o.name, (o, v) => o.name = v)
                .map<string>("category", o => o.category.to_string(), (o, v) => o.category = LicenceCategory.from_string(v))
                .map<string>("text", o => o.text_path, (o, v) => o.text_path = v)
                .set_constructor(() => new Licence())
                .build());
        }
    }
}