com.gabrielittner.threetenbp.LazyZoneRulesCompiler Maven / Gradle / Ivy

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Lazy loading ZoneRuleProvider for ThreeTenBp

There is a newer version: 0.9.0

package com.gabrielittner.threetenbp;

import com.google.devtools.common.options.OptionsParser;
import org.threeten.bp.zone.ZoneRules;
import org.threeten.bp.zone.ZoneRulesCompat;
import java.util.SortedMap;

public final class LazyZoneRulesCompiler {

    public static void main(String[] args) {
        OptionsParser parser = OptionsParser.newOptionsParser(CompilerOptions.class);
        parser.parseAndExitUponError(args);
        CompilerOptions options = parser.getOptions(CompilerOptions.class);
        if (options != null && options.validate()) {
            new LazyZoneRulesCompiler(options).run();
        }
    }

    private final String version;
    private final ZoneRulesCompat compiler;
    private final JavaWriter javaWriter;
    private final ZoneWriter zoneWriter;

    private LazyZoneRulesCompiler(CompilerOptions o) {
        version = o.version;
        compiler = new ZoneRulesCompat(version, o.tzdbFiles(), o.leapSecondFile(), o.verbose);
        javaWriter = new JavaWriter(o.codeOutputDir);
        zoneWriter = new ZoneWriter(o.tzdbOutputDir);
    }

    private void run() {
        try {
            SortedMap zones = compiler.compile();
            javaWriter.writeZoneIds(version, zones.keySet());
            zoneWriter.writeZones(zones);
        } catch (Exception ex) {
            System.out.println("Failed: " + ex.toString());
            ex.printStackTrace();
        }
    }

}