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  | 17 |  |  package org.apache.commons.fileupload.util; | 
  | 18 |  |   | 
  | 19 |  |  import java.io.Serializable; | 
  | 20 |  |  import java.util.ArrayList; | 
  | 21 |  |  import java.util.Collections; | 
  | 22 |  |  import java.util.Iterator; | 
  | 23 |  |  import java.util.LinkedHashMap; | 
  | 24 |  |  import java.util.List; | 
  | 25 |  |  import java.util.Locale; | 
  | 26 |  |  import java.util.Map; | 
  | 27 |  |   | 
  | 28 |  |  import org.apache.commons.fileupload.FileItemHeaders; | 
  | 29 |  |   | 
  | 30 |  |   | 
  | 31 |  |   | 
  | 32 |  |   | 
  | 33 |  |   | 
  | 34 |  |   | 
  | 35 | 3196 |  public class FileItemHeadersImpl implements FileItemHeaders, Serializable { | 
  | 36 |  |   | 
  | 37 |  |       | 
  | 38 |  |   | 
  | 39 |  |   | 
  | 40 |  |      private static final long serialVersionUID = -4455695752627032559L; | 
  | 41 |  |   | 
  | 42 |  |       | 
  | 43 |  |   | 
  | 44 |  |   | 
  | 45 |  |   | 
  | 46 | 3196 |      private final Map<String, List<String>> headerNameToValueListMap = new LinkedHashMap<String, List<String>>(); | 
  | 47 |  |   | 
  | 48 |  |       | 
  | 49 |  |   | 
  | 50 |  |   | 
  | 51 |  |      @Override | 
  | 52 |  |      public String getHeader(String name) { | 
  | 53 | 15988 |          String nameLower = name.toLowerCase(Locale.ENGLISH); | 
  | 54 | 15988 |          List<String> headerValueList = headerNameToValueListMap.get(nameLower); | 
  | 55 | 15988 |          if (null == headerValueList) { | 
  | 56 | 9539 |              return null; | 
  | 57 |  |          } | 
  | 58 | 6449 |          return headerValueList.get(0); | 
  | 59 |  |      } | 
  | 60 |  |   | 
  | 61 |  |       | 
  | 62 |  |   | 
  | 63 |  |   | 
  | 64 |  |      @Override | 
  | 65 |  |      public Iterator<String> getHeaderNames() { | 
  | 66 | 1 |          return headerNameToValueListMap.keySet().iterator(); | 
  | 67 |  |      } | 
  | 68 |  |   | 
  | 69 |  |       | 
  | 70 |  |   | 
  | 71 |  |   | 
  | 72 |  |      @Override | 
  | 73 |  |      public Iterator<String> getHeaders(String name) { | 
  | 74 | 4 |          String nameLower = name.toLowerCase(Locale.ENGLISH); | 
  | 75 | 4 |          List<String> headerValueList = headerNameToValueListMap.get(nameLower); | 
  | 76 | 4 |          if (null == headerValueList) { | 
  | 77 | 1 |              headerValueList = Collections.emptyList(); | 
  | 78 |  |          } | 
  | 79 | 4 |          return headerValueList.iterator(); | 
  | 80 |  |      } | 
  | 81 |  |   | 
  | 82 |  |       | 
  | 83 |  |   | 
  | 84 |  |   | 
  | 85 |  |   | 
  | 86 |  |   | 
  | 87 |  |   | 
  | 88 |  |      public synchronized void addHeader(String name, String value) { | 
  | 89 | 3247 |          String nameLower = name.toLowerCase(Locale.ENGLISH); | 
  | 90 | 3247 |          List<String> headerValueList = headerNameToValueListMap.get(nameLower); | 
  | 91 | 3247 |          if (null == headerValueList) { | 
  | 92 | 3244 |              headerValueList = new ArrayList<String>(); | 
  | 93 | 3244 |              headerNameToValueListMap.put(nameLower, headerValueList); | 
  | 94 |  |          } | 
  | 95 | 3247 |          headerValueList.add(value); | 
  | 96 | 3247 |      } | 
  | 97 |  |   | 
  | 98 |  |  } |