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org.apache.tools.zip

Class ZipLong

  • java.lang.Object
    • org.apache.tools.zip.ZipLong
  • All Implemented Interfaces:
    java.lang.Cloneable

    public final class ZipLong
extends java.lang.Object
implements java.lang.Cloneable
    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 and Description
      static ZipLong CFH_SIG
      Central File Header Signature
      static ZipLong DD_SIG
      Data Descriptor signature
      static ZipLong LFH_SIG
      Local File Header Signature

    • Constructor Summary

      Constructors 
      Constructor and 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

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method and Description
      java.lang.Object clone() 
      boolean equals(java.lang.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.
      void putLong(byte[] buf, int offset) 
      static void putLong(long value, byte[] buf, int offset)
      put the value as four bytes in big endian byte order.
      java.lang.String toString() 

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • 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

    • Constructor Detail

      • 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 Detail

      • 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

      • putLong

        public static void putLong(long value,
                           byte[] buf,
                           int offset)
        put the value as four bytes in big endian byte order.
        Parameters:
        value - the Java long to convert to bytes
        buf - the output buffer
        offset - The offset within the output buffer of the first byte to be written. must be non-negative and no larger than buf.length-4

      • putLong

        public void putLong(byte[] buf,
                    int offset)

      • 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(java.lang.Object o)
        Override to make two instances with same value equal.
        Overrides:
        equals in class java.lang.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 java.lang.Object
        Returns:
        the value stored in the ZipLong
        Since:
        1.1

      • clone

        public java.lang.Object clone()
        Overrides:
        clone in class java.lang.Object

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object
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