Line data    Source code

       1             : // Copyright (C) 2022 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.server.query.change;
      16             : 
      17             : import com.google.gerrit.index.query.QueryParseException;
      18             : import dk.brics.automaton.RegExp;
      19             : import dk.brics.automaton.RunAutomaton;
      20             : 
      21             : /**
      22             :  * A submit requirement predicate that matches with changes having the author email's address
      23             :  * matching a specific regular expression pattern.
      24             :  */
      25             : public class RegexAuthorEmailPredicate extends SubmitRequirementPredicate {
      26             :   protected final RunAutomaton authorEmailPattern;
      27             : 
      28             :   public RegexAuthorEmailPredicate(String pattern) throws QueryParseException {
      29           1 :     super("authoremail", pattern);
      30             : 
      31           1 :     if (pattern.startsWith("^")) {
      32           1 :       pattern = pattern.substring(1);
      33             :     }
      34             : 
      35           1 :     if (pattern.endsWith("$") && !pattern.endsWith("\\$")) {
      36           1 :       pattern = pattern.substring(0, pattern.length() - 1);
      37             :     }
      38             : 
      39             :     try {
      40           1 :       this.authorEmailPattern = new RunAutomaton(new RegExp(pattern).toAutomaton());
      41           0 :     } catch (IllegalArgumentException e) {
      42           0 :       throw new QueryParseException(String.format("invalid regular expression: %s", pattern), e);
      43           1 :     }
      44           1 :   }
      45             : 
      46             :   @Override
      47             :   public boolean match(ChangeData cd) {
      48           1 :     return authorEmailPattern.run(cd.getAuthor().getEmailAddress());
      49             :   }
      50             : 
      51             :   @Override
      52             :   public int getCost() {
      53           0 :     return 1;
      54             :   }
      55             : }