private static void cleanUpAndGetTitle()

in html-convert/src/main/java/org/netbeans/tools/tutorials/AsciidocPostProcessor.java [73:124]
46 lines of code
13 McCabe index (conditional complexity)

    private static void cleanUpAndGetTitle(File file, HashMap<File, String> titles) throws IOException {
        File temporaryFile = new File(file.getParentFile(), file.getName() + ".tmp");
        ContentSectionState state = ContentSectionState.BEFORE_CONTENT_SECTION;
        String title = null;

        try (BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(file), StandardCharsets.UTF_8));
                PrintWriter output = new PrintWriter(new OutputStreamWriter(new FileOutputStream(temporaryFile), StandardCharsets.UTF_8))) {

            do {
                String line = input.readLine();
                if (line == null) {
                    break;
                }
                if (title == null) {
                    Matcher m = TITLE_PATTERN.matcher(line);
                    if (m.matches()) {
                        title = m.group(1);
                    }
                }
                switch (state) {
                    case BEFORE_CONTENT_SECTION:
                        if (isContentsHeader(line)) {
                            state = ContentSectionState.INSIDE_CONTENT_SECTION;
                            break;
                        }
                        output.println(line);
                        break;
                    case INSIDE_CONTENT_SECTION:
                        if (line.startsWith("* <")
                                || line.startsWith("* link:")) {
                            // Ignore bullet lists with cross references or external links
                        } else {
                            output.println(line);
                        }
                        if (line.startsWith("=")) {
                            state = ContentSectionState.AFTER_CONTENT_SECTION;
                        }
                        break;
                    case AFTER_CONTENT_SECTION:
                        output.println(line);
                        break;
                }
            } while (true);

        }

        Files.move(temporaryFile.toPath(), file.toPath(), StandardCopyOption.REPLACE_EXISTING, StandardCopyOption.ATOMIC_MOVE);

        if (title != null) {
            titles.put(file, title);
        }
    }