private String mvndHomeFromExecutable()

in client/src/main/java/org/mvndaemon/mvnd/client/DaemonParameters.java [121:153]

30 lines of code
9 McCabe index (conditional complexity)


    private String mvndHomeFromExecutable() {
        Optional<String> cmd = ProcessHandle.current().info().command();
        if (Environment.isNative() && cmd.isPresent()) {
            String cmdStr = cmd.get();
            // When running on alpine, musl uses a dynamic loader
            // which is used as the main exec and the full path to the
            // executable is the argument following "--"
            if (cmdStr.startsWith("/lib/ld-musl-")) {
                Optional<String[]> args = ProcessHandle.current().info().arguments();
                if (args.isPresent()) {
                    boolean nextIsArg0 = false;
                    for (String arg : args.get()) {
                        if (nextIsArg0) {
                            cmdStr = arg;
                            break;
                        } else {
                            nextIsArg0 = "--".equals(arg);
                        }
                    }
                }
            }
            Path mvndH = Paths.get(cmdStr).getParent().getParent();
            if (mvndH != null) {
                Path mvndDaemon =
                        Paths.get("mvnd-daemon-" + BuildProperties.getInstance().getVersion() + ".jar");
                if (Files.exists(
                        mvndH.resolve("mvn").resolve("lib").resolve("mvnd").resolve(mvndDaemon))) {
                    return mvndH.toString();
                }
            }
        }
        return null;
    }