001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.squid.recognizer;
021    
022    public class CamelCaseDetector extends Detector {
023    
024      public CamelCaseDetector(double probability) {
025        super(probability);
026      }
027    
028      @Override
029      public int scan(String line) {
030        char previousChar = ' ';
031        char indexChar = ' ';
032        for (int i = 0; i < line.length(); i++) {
033          indexChar = line.charAt(i);
034          if (isLowerCaseThenUpperCase(previousChar, indexChar)) {
035            return 1;
036          }
037          previousChar = indexChar;
038        }
039        return 0;
040      }
041    
042      private boolean isLowerCaseThenUpperCase(char previousChar, char indexChar) {
043        return Character.getType(previousChar) == Character.LOWERCASE_LETTER && Character.getType(indexChar) == Character.UPPERCASE_LETTER;
044      }
045    }