Path userHome = Paths.get(properties.get("user.home"));
        Path mavenUserHome = userHome.resolve(".m2");
        Path mavenSystemHome = properties.containsKey("maven.home")
                ? Paths.get(properties.get("maven.home"))
                : properties.containsKey("env.MAVEN_HOME") ? Paths.get(properties.get("env.MAVEN_HOME")) : null;

        System.out.println(SystemUtil.OS_NAME);
        System.out.println(SystemUtil.JAVA_IO_TMPDIR);
        System.out.println(SystemUtil.USER_DIR);
        System.out.println(SystemUtil.USER_HOME);
    }

        pathMapping.setRegex("file:///home/");
        pathMapping.setReplacement("http://localhost/");
        pathMappingList.add(pathMapping);

        pathMappingHelper.cachedPathMappingList = pathMappingList;

        String text = "\"file:///home/\"";
        assertEquals("\"http://localhost/\"", pathMappingHelper.replaceUrls(text));

        text = "\"file:///home/user/\"";

        exp = "example.com/index.html";
        assertEquals(exp, transformer.getSiteOnFile(url, "UTF-8"));

        url = "file:/home/user";
        exp = "/home/user";
        assertEquals(exp, transformer.getSiteOnFile(url, "UTF-8"));

        url = "file:/c:/home/user";
        exp = "c:\\home\\user";
        assertEquals(exp, transformer.getSiteOnFile(url, "UTF-8"));

        url = "file:/c:/";
        exp = "c:\\";

  PATH_SEPARATOR("path.separator"),

  /** Line separator ("\n" on UNIX). */
  LINE_SEPARATOR("line.separator"),

  /** User's account name. */
  USER_NAME("user.name"),

  /** User's home directory. */
  USER_HOME("user.home"),

  /** User's current working directory. */
  USER_DIR("user.dir");

  private final String key;

  StandardSystemProperty(String key) {
    this.key = key;
  }

        // file
        assertUrlLink("file:/home/taro/test.txt", //
                "file://home/taro/test.txt");
        assertUrlLink("file:/home/taro/あ.txt", //
                "file://home/taro/あ.txt");
        assertUrlLink("file:/home/taro/%E3%81%82.txt", //
                "file://home/taro/あ.txt");

        // smb->file
        assertUrlLink("smb:/home/taro/test.txt", //
                "file://home/taro/test.txt");

    /**
     * <code>user.dir</code> システムプロパティ。
     */
    public static final String USER_DIR = System.getProperty("user.dir");

    /**
     * <code>user.home</code> システムプロパティ。
     */
    public static final String USER_HOME = System.getProperty("user.home");

    public static long currentTimeMillis() {
        // TODO provider
        return System.currentTimeMillis();
    }

  PATH_SEPARATOR("path.separator"),

  /** Line separator ("\n" on UNIX). */
  LINE_SEPARATOR("line.separator"),

  /** User's account name. */
  USER_NAME("user.name"),

  /** User's home directory. */
  USER_HOME("user.home"),

  /** User's current working directory. */
  USER_DIR("user.dir");

  private final String key;

  StandardSystemProperty(String key) {
    this.key = key;
  }

   */
  static final class LocationInfo {
    final File home;
    private final ClassLoader classloader;

    LocationInfo(File home, ClassLoader classloader) {
      this.home = checkNotNull(home);
      this.classloader = checkNotNull(classloader);
    }

    /** Returns the file this location is from. */
    public final File file() {
      return home;
    }

        this.settingsBuilder = settingsBuilder;
    }

    public Settings buildSettings() throws IOException, XmlPullParserException {
        File userSettingsFile = getFile(
                "${user.home}/.m2/settings.xml", "user.home", MavenSettingsBuilder.ALT_USER_SETTINGS_XML_LOCATION);

        return buildSettings(userSettingsFile);
    }