content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.camel.quarkus.maven.processor;
  
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  /**
   * {@link DocumentationPostProcessor} transform AsciiDoc headings to add ID blocks.
   */
  public class SectionIdPostProcessor implements DocumentationPostProcessor {
      private static final Pattern PATTERN_ASCIIDOC_HEADING = Pattern.compile("^=+ (.*)", Pattern.MULTILINE);
      private static final Pattern PATTERN_NON_ALPHA_NUMERIC = Pattern.compile("[^A-Za-z\\d-]");
      private static final Pattern PATTERN_MULTIPLE_HYPHEN = Pattern.compile("-+");
      private static final Pattern PATTERN_TRIM_HYPHEN = Pattern.compile("^-|-$");
  
      @Override
      public void process(AsciiDocFile file) {
          Matcher matcher = PATTERN_ASCIIDOC_HEADING.matcher(file.getContent());
          while (matcher.find()) {
              String headingMarkup = matcher.group(0);
              String heading = matcher.group(1);
              String fileName = file.getPath().getFileName().toString();
              String docType = fileName.substring(0, fileName.lastIndexOf('.'));
              String id = generateAsciiDocIdentifier(file.getCqExtension(), docType, heading.toLowerCase().trim());
              file.replace(headingMarkup, id + headingMarkup);
          }
      }
  
      private String generateAsciiDocIdentifier(String extension, String docType, String heading) {
          String sanitizedHeading = String.format("extensions-%s-%s-%s", extension, docType, heading);
          sanitizedHeading = PATTERN_NON_ALPHA_NUMERIC.matcher(sanitizedHeading).replaceAll("-");
          sanitizedHeading = PATTERN_MULTIPLE_HYPHEN.matcher(sanitizedHeading).replaceAll("-");
          sanitizedHeading = PATTERN_TRIM_HYPHEN.matcher(sanitizedHeading).replaceAll("");
          return String.format("[id=\"%s\"]\n", sanitizedHeading).toLowerCase();
      }
  }
  