code: /* LanguageTool, a natural language style checker
   * Copyright (C) 2014 Daniel Naber (http://www.danielnaber.de)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
   * USA
   */
  package org.languagetool.rules.patterns;
  
  import org.jetbrains.annotations.Nullable;
  import org.languagetool.AnalyzedSentence;
  import org.languagetool.rules.RuleMatch;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.regex.Matcher;
  
  /**
   * Evaluates a {@link RegexRuleFilter} for {@link RegexPatternRule}s.
   * @since 5.2
   */
  public class RegexRuleFilterEvaluator {
  
    private final RegexRuleFilter filter;
  
    public RegexRuleFilterEvaluator(RegexRuleFilter filter) {
      this.filter = filter;
    }
  
    @Nullable
    public RuleMatch runFilter(String filterArgs, RuleMatch ruleMatch, AnalyzedSentence sentenceObj, Matcher patternMatcher) {
      Map<String,String> args = getResolvedArguments(filterArgs);
      return filter.acceptRuleMatch(ruleMatch, args, sentenceObj, patternMatcher);
    }
  
    private Map<String,String> getResolvedArguments(String filterArgs) {
      Map<String,String> result = new HashMap<>();
      String[] arguments = filterArgs.split("\\s+");
      for (String arg : arguments) {
        int delimPos = arg.indexOf(':');
        if (delimPos == -1) {
          throw new RuntimeException("Invalid syntax for key/value, expected 'key:value', got: '" + arg + "'");
        }
        String key = arg.substring(0, delimPos);
        String val = arg.substring(delimPos + 1);
        result.put(key, val);
      }
      return result;
    }
  
  }
  