zzip

#!/usr/bin/env -S java --source 25

String version = "2026-02-27.1";

void main(String... args) {
    if (args.length == 0 || args[0].equals("-help")) {
        IO.println("Usage: zzip <directory>");
        IO.println("  Zips a directory into <directory>.zip");
        IO.println("  -help     Show this help");
        IO.println("  -version  Show version");
        return;
    }
    if (args[0].equals("-version")) {
        IO.println("zzip " + version);
        return;
    }
    var dir = Path.of(args[0]);
    if (!Files.isDirectory(dir)) {
        System.err.println("Not a directory: " + dir);
        System.exit(1);
    }
    var zipFile = Path.of(dir.getFileName() + ".zip");
    try (var fos = Files.newOutputStream(zipFile); 
        var zos = new ZipOutputStream(fos)) {
        try (var paths = Files.walk(dir)) {
            paths
            .filter(Files::isRegularFile)
            .forEach(path -> addEntry(zos, dir, path));
        }
    } catch (IOException e) {
        System.err.println("Error: " + e.getMessage());
        System.exit(1);
    }
    IO.println(zipFile.toAbsolutePath());
}

void addEntry(ZipOutputStream zos, Path base, Path file) {
    try {
        var entryName =  base.relativize(file).toString();
        var entry = new ZipEntry(entryName);
        zos.putNextEntry(entry);
        Files.copy(file, zos);
        zos.closeEntry();
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}