TestCharSource lines = new TestCharSource(LINES);
    assertEquals("foo", lines.readFirstLine());
    assertTrue(lines.wasStreamOpened() && lines.wasStreamClosed());
  }

  public void testReadLines_toList() throws IOException {
    TestCharSource lines = new TestCharSource(LINES);
    assertEquals(ImmutableList.of("foo", "bar", "baz", "something"), lines.readLines());

      return lines.hasNext() ? lines.next() : null;
    }

    @Override
    public ImmutableList<String> readLines() {
      return ImmutableList.copyOf(linesIterator());
    }

    @Override
    @ParametricNullness
    public <T extends @Nullable Object> T readLines(LineProcessor<T> processor) throws IOException {
      Iterator<String> lines = linesIterator();
      while (lines.hasNext()) {

                    it.hasNext(); ) {
                URL url = it.next();
                List<String> lines;
                try (InputStream is = url.openStream();
                        BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8))) {
                    lines = reader.lines()
                            .map(String::trim)

        if (relocationsEntries == null) {
            return null;
        }
        String[] entries = relocationsEntries.split(",");
        try (Stream<String> lines = Arrays.stream(entries)) {
            List<Relocation> relocationList = lines.filter(
                            l -> l != null && !l.trim().isEmpty())
                    .map(l -> {
                        boolean global;

            while ((line = reader.readLine()) != null) {
                // Remove comments
                final String replacedLine = line.replaceAll("#.*$", StringUtil.EMPTY).trim();

                // Skip empty lines or comment lines
                if (replacedLine.length() == 0) {
                    if (updater != null) {
                        updater.write(line);
                    }
                    continue;
                }

    public void artifactDescriptorInvalid(RepositoryEvent event) {
        // The exception stack trace is not really interesting here
        // but the message itself may be quite details and span multiple
        // lines with errors in it, so only display it at debug level.
        String msg = "The POM for {} is invalid, transitive dependencies (if any) will not be available: {}";
        if (logger.isDebugEnabled()) {

    if (r instanceof Reader) {
      copyReaderToBuilder((Reader) r, sb);
    } else {
      copy(r, sb);
    }
    return sb;
  }

  /**
   * Reads all of the lines from a {@link Readable} object. The lines do not include
   * line-termination characters, but do include other leading and trailing whitespace.
   *
   * <p>Does not close the {@code Readable}. If reading files or resources you should use the {@link

    }

    private static char[] nines() {
      char[] nines = new char[ZEROES.length()];
      for (int i = 0; i < ZEROES.length(); i++) {
        nines[i] = (char) (ZEROES.charAt(i) + 9);
      }
      return nines;
    }

    static final CharMatcher INSTANCE = new Digit();

    private Digit() {
      super("CharMatcher.digit()", zeroes(), nines());
    }
  }

  }

  /**
   * Streams lines from a {@link File}, stopping when our callback returns false, or we have read
   * all of the lines.
   *
   * @param file the file to read from
   * @param charset the charset used to decode the input stream; see {@link StandardCharsets} for
   *     helpful predefined constants
   * @param callback the {@link LineProcessor} to use to handle the lines
   * @return the output of processing the lines

                    action.accept(pid, line);
                }
            }
        });
    }

    private static List<String> ps() {
        return run(determinePsCommand()).assertZeroExit().stdout.lines().collect(Collectors.toList());
    }

    private static String[] determinePsCommand() {
        if (isWindows()) {
            return new String[]{"wmic", "process", "get", "processid,commandline"};