Class FormattedDiskPage

  • Direct Known Subclasses:
    CHPFormattedDiskPage, PAPFormattedDiskPage

    @Internal
    public abstract class FormattedDiskPage
    extends java.lang.Object
    Represents an FKP data structure. This data structure is used to store the grpprls of the paragraph and character properties of the document. A grpprl is a list of sprms(decompression operations) to perform on a parent style. The style properties for paragraph and character runs are stored in fkps. There are PAP fkps for paragraph properties and CHP fkps for character run properties. The first part of the fkp for both CHP and PAP fkps consists of an array of 4 byte int offsets in the main stream for that Paragraph's or Character run's text. The ending offset is the next value in the array. For example, if an fkp has X number of Paragraph's stored in it then there are (x + 1) 4 byte ints in the beginning array. The number X is determined by the last byte in a 512 byte fkp. CHP and PAP fkps also store the compressed styles(grpprl) that correspond to the offsets on the front of the fkp. The offset of the grpprls is determined differently for CHP fkps and PAP fkps.
    Author:
    Ryan Ackley
    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected int _crun  
      protected byte[] _fkp  
      protected int _offset  
    • Constructor Summary

      Constructors 
      Constructor Description
      FormattedDiskPage()  
      FormattedDiskPage​(byte[] documentStream, int offset)
      Uses a 512-byte array to create a FKP
    • Method Summary

      All Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method Description
      protected int getEnd​(int index)
      Used to get the end of the text corresponding to a grpprl in this fkp.
      protected abstract byte[] getGrpprl​(int index)  
      protected int getStart​(int index)
      Used to get a text offset corresponding to a grpprl in this fkp.
      int size()
      Used to get the total number of grrprl's stored int this FKP
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • _fkp

        protected byte[] _fkp
      • _crun

        protected int _crun
      • _offset

        protected int _offset
    • Constructor Detail

      • FormattedDiskPage

        public FormattedDiskPage()
      • FormattedDiskPage

        public FormattedDiskPage​(byte[] documentStream,
                                 int offset)
        Uses a 512-byte array to create a FKP
    • Method Detail

      • getStart

        protected int getStart​(int index)
        Used to get a text offset corresponding to a grpprl in this fkp.
        Parameters:
        index - The index of the property in this FKP
        Returns:
        an int representing an offset in the "WordDocument" stream
      • getEnd

        protected int getEnd​(int index)
        Used to get the end of the text corresponding to a grpprl in this fkp.
        Parameters:
        index - The index of the property in this fkp.
        Returns:
        an int representing an offset in the "WordDocument" stream
      • size

        public int size()
        Used to get the total number of grrprl's stored int this FKP
        Returns:
        The number of grpprls in this FKP
      • getGrpprl

        protected abstract byte[] getGrpprl​(int index)