Class ZipLong

java.lang.Object
org.zeroturnaround.zip.extra.ZipLong
All Implemented Interfaces:
Cloneable
public final class ZipLong extends Object implements Cloneable
This is a class that has been made significantly smaller (deleted a bunch of methods) and originally is from the Apache Ant Project (http://ant.apache.org), org.apache.tools.zip package. All license and other documentation is intact. Utility class that represents a four byte integer with conversion rules for the big endian byte order of ZIP files.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    private static final int
    BYTE_1
     
    private static final int
    BYTE_1_MASK
     
    private static final int
    BYTE_1_SHIFT
     
    private static final int
    BYTE_2
     
    private static final int
    BYTE_2_MASK
     
    private static final int
    BYTE_2_SHIFT
     
    private static final int
    BYTE_3
     
    private static final long
    BYTE_3_MASK
     
    private static final int
    BYTE_3_SHIFT
     
    static final ZipLong
    CFH_SIG
    Central File Header Signature
    static final ZipLong
    DD_SIG
    Data Descriptor signature
    static final ZipLong
    LFH_SIG
    Local File Header Signature
    private final long
    value
     
    (package private) static final ZipLong
    ZIP64_MAGIC
    Value stored in size and similar fields if ZIP64 extensions are used.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ZipLong(byte[] bytes)
    Create instance from bytes.
    ZipLong(byte[] bytes, int offset)
    Create instance from the four bytes starting at offset.
    ZipLong(long value)
    Create instance from a number.

  • Method Summary

    Modifier and Type
    Method
    Description
    Object
    clone()
     
    boolean
    equals(Object o)
    Override to make two instances with same value equal.
    byte[]
    getBytes()
    Get value as four bytes in big endian byte order.
    static byte[]
    getBytes(long value)
    Get value as four bytes in big endian byte order.
    long
    getValue()
    Get value as Java long.
    static long
    getValue(byte[] bytes)
    Helper method to get the value as a Java long from a four-byte array
    static long
    getValue(byte[] bytes, int offset)
    Helper method to get the value as a Java long from four bytes starting at given array offset
    int
    hashCode()
    Override to make two instances with same value equal.
    String
    toString()
     

    Methods inherited from class Object

    finalize, getClass, notify, notifyAll, wait, wait, wait

  • Field Details

    • BYTE_1

      private static final int BYTE_1
      See Also:

    • BYTE_1_MASK

      private static final int BYTE_1_MASK
      See Also:

    • BYTE_1_SHIFT

      private static final int BYTE_1_SHIFT
      See Also:

    • BYTE_2

      private static final int BYTE_2
      See Also:

    • BYTE_2_MASK

      private static final int BYTE_2_MASK
      See Also:

    • BYTE_2_SHIFT

      private static final int BYTE_2_SHIFT
      See Also:

    • BYTE_3

      private static final int BYTE_3
      See Also:

    • BYTE_3_MASK

      private static final long BYTE_3_MASK
      See Also:

    • BYTE_3_SHIFT

      private static final int BYTE_3_SHIFT
      See Also:

    • value

      private final long value

    • CFH_SIG

      public static final ZipLong CFH_SIG
      Central File Header Signature

    • LFH_SIG

      public static final ZipLong LFH_SIG
      Local File Header Signature

    • DD_SIG

      public static final ZipLong DD_SIG
      Data Descriptor signature

    • ZIP64_MAGIC

      static final ZipLong ZIP64_MAGIC
      Value stored in size and similar fields if ZIP64 extensions are used.

  • Constructor Details

    • ZipLong

      public ZipLong(long value)
      Create instance from a number.
      Parameters:
      value - the long to store as a ZipLong
      Since:
      1.1

    • ZipLong

      public ZipLong(byte[] bytes)
      Create instance from bytes.
      Parameters:
      bytes - the bytes to store as a ZipLong
      Since:
      1.1

    • ZipLong

      public ZipLong(byte[] bytes, int offset)
      Create instance from the four bytes starting at offset.
      Parameters:
      bytes - the bytes to store as a ZipLong
      offset - the offset to start
      Since:
      1.1

  • Method Details

    • getBytes

      public byte[] getBytes()
      Get value as four bytes in big endian byte order.
      Returns:
      value as four bytes in big endian order
      Since:
      1.1

    • getValue

      public long getValue()
      Get value as Java long.
      Returns:
      value as a long
      Since:
      1.1

    • getBytes

      public static byte[] getBytes(long value)
      Get value as four bytes in big endian byte order.
      Parameters:
      value - the value to convert
      Returns:
      value as four bytes in big endian byte order

    • getValue

      public static long getValue(byte[] bytes, int offset)
      Helper method to get the value as a Java long from four bytes starting at given array offset
      Parameters:
      bytes - the array of bytes
      offset - the offset to start
      Returns:
      the corresponding Java long value

    • getValue

      public static long getValue(byte[] bytes)
      Helper method to get the value as a Java long from a four-byte array
      Parameters:
      bytes - the array of bytes
      Returns:
      the corresponding Java long value

    • equals

      public boolean equals(Object o)
      Override to make two instances with same value equal.
      Overrides:
      equals in class Object
      Parameters:
      o - an object to compare
      Returns:
      true if the objects are equal
      Since:
      1.1

    • hashCode

      public int hashCode()
      Override to make two instances with same value equal.
      Overrides:
      hashCode in class Object
      Returns:
      the value stored in the ZipLong
      Since:
      1.1

    • clone

      public Object clone()
      Overrides:
      clone in class Object

    • toString

      public String toString()
      Overrides:
      toString in class Object