/*
    * SPDX-FileCopyrightText: Copyright (c) 2011-2026 Yegor Bugayenko
    * SPDX-License-Identifier: MIT
    */
   package com.qulice.maven;
   
   import com.google.common.base.Function;
   import javax.annotation.Nullable;
   
  /**
   * Converts a checker exclude into exclude param.
   *
   * <p>E.g. "checkstyle:.*" will become ".*".</p>
   *
   * @since 0.1
   */
  final class CheckerExcludes implements Function<String, String> {
  
      /**
       * Name of checker.
       */
      private final String checker;
  
      /**
       * Constructor.
       *
       * @param checker Name of checker
       */
      CheckerExcludes(final String checker) {
          this.checker = checker;
      }
  
      @Nullable
      @Override
      public String apply(@Nullable final String input) {
          String result = null;
          if (input != null) {
              final String[] exclude = input.split(":", 2);
              final String check = exclude[0];
              final boolean appropriate = "*".equals(check)
                  || this.checker.equals(check);
              if (appropriate && exclude.length > 1) {
                  result = exclude[1];
              }
          }
          return result;
      }
  }