Coverage Report - com.puppycrawl.tools.checkstyle.PropertiesExpander
 
Classes in this File Line Coverage Branch Coverage Complexity
PropertiesExpander
100%
10/10
100%
4/4
2.5
 
 1  
 ////////////////////////////////////////////////////////////////////////////////
 2  
 // checkstyle: Checks Java source code for adherence to a set of rules.
 3  
 // Copyright (C) 2001-2017 the original author or authors.
 4  
 //
 5  
 // This library is free software; you can redistribute it and/or
 6  
 // modify it under the terms of the GNU Lesser General Public
 7  
 // License as published by the Free Software Foundation; either
 8  
 // version 2.1 of the License, or (at your option) any later version.
 9  
 //
 10  
 // This library is distributed in the hope that it will be useful,
 11  
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 12  
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 13  
 // Lesser General Public License for more details.
 14  
 //
 15  
 // You should have received a copy of the GNU Lesser General Public
 16  
 // License along with this library; if not, write to the Free Software
 17  
 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 18  
 ////////////////////////////////////////////////////////////////////////////////
 19  
 
 20  
 package com.puppycrawl.tools.checkstyle;
 21  
 
 22  
 import java.util.Enumeration;
 23  
 import java.util.HashMap;
 24  
 import java.util.Map;
 25  
 import java.util.Properties;
 26  
 
 27  
 /**
 28  
  * Resolves external properties from an
 29  
  * underlying {@code Properties} object.
 30  
  *
 31  
  * @author lkuehne
 32  
  */
 33  
 public final class PropertiesExpander
 34  
     implements PropertyResolver {
 35  
     /** The underlying values. */
 36  
     private final Map<String, String> values;
 37  
 
 38  
     /**
 39  
      * Creates a new PropertiesExpander.
 40  
      * @param properties the underlying properties to use for
 41  
      *     property resolution.
 42  
      * @throws IllegalArgumentException indicates null was passed
 43  
      */
 44  521
     public PropertiesExpander(Properties properties) {
 45  521
         if (properties == null) {
 46  1
             throw new IllegalArgumentException("cannot pass null");
 47  
         }
 48  520
         values = new HashMap<>(properties.size());
 49  520
         for (Enumeration<?> e = properties.propertyNames(); e.hasMoreElements();) {
 50  1877
             final String name = (String) e.nextElement();
 51  1877
             values.put(name, properties.getProperty(name));
 52  1877
         }
 53  520
     }
 54  
 
 55  
     @Override
 56  
     public String resolve(String name) {
 57  66
         return values.get(name);
 58  
     }
 59  
 }