/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.commons.compress.archivers.arj;
  
  import java.io.File;
  import java.util.Date;
  
  import org.apache.commons.compress.archivers.ArchiveEntry;
  import org.apache.commons.compress.archivers.zip.ZipUtil;
  
  /**
   * An entry in an ARJ archive.
   *
   * @NotThreadSafe
   * @since 1.6
   */
  public class ArjArchiveEntry implements ArchiveEntry {
  
      /**
       * The known values for HostOs.
       */
      public static class HostOs {
  
          /**
           * Constant value {@value}.
           */
          public static final int DOS = 0;
  
          /**
           * Constant value {@value}.
           */
          public static final int PRIMOS = 1;
  
          /**
           * Constant value {@value}.
           */
          public static final int UNIX = 2;
  
          /**
           * Constant value {@value}.
           */
          public static final int AMIGA = 3;
  
          /**
           * Constant value {@value}.
           */
          public static final int MAC_OS = 4;
  
          /**
           * Constant value {@value}.
           */
          public static final int OS_2 = 5;
  
          /**
           * Constant value {@value}.
           */
          public static final int APPLE_GS = 6;
  
          /**
           * Constant value {@value}.
           */
          public static final int ATARI_ST = 7;
  
          /**
           * Constant value {@value}.
           */
          public static final int NEXT = 8;
  
          /**
           * Constant value {@value}.
           */
          public static final int VAX_VMS = 9;
  
          /**
           * Constant value {@value}.
           */
          public static final int WIN95 = 10;
  
          /**
           * Constant value {@value}.
           */
          public static final int WIN32 = 11;
  
         /**
          * Constructs a new instance.
          *
          * @deprecated Will be private in the next major release.
          */
         @Deprecated
         public HostOs() {
             // empty
         }
     }
 
     private final LocalFileHeader localFileHeader;
 
     /**
      * Constructs a new instance.
      */
     public ArjArchiveEntry() {
         localFileHeader = new LocalFileHeader();
     }
 
     /**
      * Constructs a new instance.
      */
     ArjArchiveEntry(final LocalFileHeader localFileHeader) {
         this.localFileHeader = localFileHeader;
     }
 
     @Override
     public boolean equals(final Object obj) {
         if (this == obj) {
             return true;
         }
         if (obj == null || getClass() != obj.getClass()) {
             return false;
         }
         final ArjArchiveEntry other = (ArjArchiveEntry) obj;
         return localFileHeader.equals(other.localFileHeader);
     }
 
     /**
      * The operating system the archive has been created on.
      *
      * @see HostOs
      * @return the host OS code
      */
     public int getHostOs() {
         return localFileHeader.hostOS;
     }
 
     /**
      * The last modified date of the entry.
      *
      * <p>
      * Note the interpretation of time is different depending on the HostOS that has created the archive. While an OS that is {@link #isHostOsUnix considered to
      * be Unix} stores time in a time zone independent manner, other platforms only use the local time. I.e. if an archive has been created at midnight UTC on a
      * machine in time zone UTC this method will return midnight regardless of time zone if the archive has been created on a non-Unix system and a time taking
      * the current time zone into account if the archive has been created on Unix.
      * </p>
      *
      * @return the last modified date
      */
     @Override
     public Date getLastModifiedDate() {
         final long ts = isHostOsUnix() ? localFileHeader.dateTimeModified * 1000L : ZipUtil.dosToJavaTime(0xFFFFFFFFL & localFileHeader.dateTimeModified);
         return new Date(ts);
     }
 
     int getMethod() {
         return localFileHeader.method;
     }
 
     /**
      * File mode of this entry.
      *
      * <p>
      * The format depends on the host os that created the entry.
      * </p>
      *
      * @return the file mode
      */
     public int getMode() {
         return localFileHeader.fileAccessMode;
     }
 
     /**
      * Gets this entry's name.
      *
      * <p>
      * This method returns the raw name as it is stored inside of the archive.
      * </p>
      *
      * @return This entry's name.
      */
     @Override
     public String getName() {
         if ((localFileHeader.arjFlags & LocalFileHeader.Flags.PATHSYM) != 0) {
             return localFileHeader.name.replace("/", File.separator);
         }
         return localFileHeader.name;
     }
 
     /**
      * Gets this entry's file size.
      *
      * @return This entry's file size.
      */
     @Override
     public long getSize() {
         return localFileHeader.originalSize;
     }
 
     /**
      * File mode of this entry as Unix stat value.
      *
      * <p>
      * Will only be non-zero of the host os was Unix.
      *
      * @return the Unix mode
      */
     public int getUnixMode() {
         return isHostOsUnix() ? getMode() : 0;
     }
 
     @Override
     public int hashCode() {
         final String name = getName();
         return name == null ? 0 : name.hashCode();
     }
 
     /**
      * True if the entry refers to a directory.
      *
      * @return True if the entry refers to a directory
      */
     @Override
     public boolean isDirectory() {
         return localFileHeader.fileType == LocalFileHeader.FileTypes.DIRECTORY;
     }
 
     /**
      * Is the operating system the archive has been created on one that is considered a Unix OS by arj?
      *
      * @return whether the operating system the archive has been created on is considered a Unix OS by arj
      */
     public boolean isHostOsUnix() {
         return getHostOs() == HostOs.UNIX || getHostOs() == HostOs.NEXT;
     }
 
 }