sackley 2002/06/27 05:16:44
Modified: src/scratchpad/src/org/apache/poi/hdf/model/hdftypes
FormattedDiskPage.java
Log:
Added detailed comments
Revision Changes Path
1.2 +19 -4
jakarta-poi/src/scratchpad/src/org/apache/poi/hdf/model/hdftypes/FormattedDiskPage.java
Index: FormattedDiskPage.java
===================================================================
RCS file:
/home/cvs/jakarta-poi/src/scratchpad/src/org/apache/poi/hdf/model/hdftypes/FormattedDiskPage.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- FormattedDiskPage.java 14 Jun 2002 02:03:44 -0000 1.1
+++ FormattedDiskPage.java 27 Jun 2002 12:16:44 -0000 1.2
@@ -61,12 +61,25 @@
* 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
*/
-public class FormattedDiskPage
+public abstract class FormattedDiskPage
{
- byte[] _fkp;
- int _crun;
+ protected byte[] _fkp;
+ protected int _crun;
/**
* Uses a 512-byte array to create a FKP
@@ -97,8 +110,10 @@
* Used to get the total number of grrprl's stored int this FKP
* @return The number of grpprls in this FKP
*/
- public int getSize()
+ public int size()
{
return _crun;
}
+
+ public abstract byte[] getGrpprl(int index);
}
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