/*
    * 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.maven.shared.utils.io;
  
  import javax.annotation.Nonnull;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.StringTokenizer;
  import java.util.regex.Pattern;
  
  /**
   * <p>Describes a match target for SelectorUtils.</p>
   * <p>
   * Significantly more efficient than using strings, since re-evaluation and re-tokenizing is avoided.</p>
   *
   * @author Kristian Rosenvold
   * @deprecated use {@code java.nio.file.DirectoryStream.Filter<T>} and related classes
   */
  @Deprecated
  public class MatchPattern {
      private final String source;
  
      private final String regexPattern;
  
      private final Pattern regexPatternRegex;
  
      private final String separator;
  
      private final String[] tokenized;
  
      private MatchPattern(@Nonnull String source, @Nonnull String separator) {
          regexPattern = SelectorUtils.isRegexPrefixedPattern(source)
                  ? source.substring(
                          SelectorUtils.REGEX_HANDLER_PREFIX.length(),
                          source.length() - SelectorUtils.PATTERN_HANDLER_SUFFIX.length())
                  : null;
          regexPatternRegex = regexPattern != null ? Pattern.compile(regexPattern) : null;
          this.source = SelectorUtils.isAntPrefixedPattern(source)
                  ? source.substring(
                          SelectorUtils.ANT_HANDLER_PREFIX.length(),
                          source.length() - SelectorUtils.PATTERN_HANDLER_SUFFIX.length())
                  : source;
          this.separator = separator;
          tokenized = tokenizePathToString(this.source, separator);
      }
  
      /**
       * @param str The string to match for.
       * @param isCaseSensitive case sensitive true false otherwise.
       * @return true if matches false otherwise.
       */
      public boolean matchPath(String str, boolean isCaseSensitive) {
          if (regexPattern != null) {
              return regexPatternRegex.matcher(str).matches();
          } else {
              return SelectorUtils.matchAntPathPattern(this, str, separator, isCaseSensitive);
          }
      }
  
      boolean matchPath(String str, String[] strDirs, boolean isCaseSensitive) {
          if (regexPattern != null) {
              return regexPatternRegex.matcher(str).matches();
          } else {
              return SelectorUtils.matchAntPathPattern(getTokenizedPathString(), strDirs, isCaseSensitive);
          }
      }
  
      /**
       * @param str The string to check.
       * @param isCaseSensitive Check case sensitive or not.
       * @return true in case of matching pattern.
       */
      public boolean matchPatternStart(@Nonnull String str, boolean isCaseSensitive) {
          if (regexPattern != null) {
              // FIXME: ICK! But we can't do partial matches for regex, so we have to reserve judgment until we have
              // a file to deal with, or we can definitely say this is an exclusion...
              return true;
          } else {
              String altStr = source.replace('\\', '/');
  
              return SelectorUtils.matchAntPathPatternStart(this, str, File.separator, isCaseSensitive)
                     || SelectorUtils.matchAntPathPatternStart(this, altStr, "/", isCaseSensitive);
         }
     }
 
     /**
      * @return Tokenized string.
      */
     public String[] getTokenizedPathString() {
         return tokenized;
     }
 
     /**
      * @param string The part which will be checked to start with.
      * @return true in case of starting with the string false otherwise.
      */
     public boolean startsWith(String string) {
         return source.startsWith(string);
     }
 
     static String[] tokenizePathToString(@Nonnull String path, @Nonnull String separator) {
         List<String> ret = new ArrayList<String>();
         StringTokenizer st = new StringTokenizer(path, separator);
         while (st.hasMoreTokens()) {
             ret.add(st.nextToken());
         }
         return ret.toArray(new String[ret.size()]);
     }
 
     /**
      * @param source The source.
      * @return The match pattern.
      */
     public static MatchPattern fromString(String source) {
         return new MatchPattern(source, File.separator);
     }
 }