Package com.inductiveautomation.rm.pdf.reader

Class PDFObjectStream

java.lang.Object

com.inductiveautomation.rm.pdf.reader.PDFObjectStream

public class PDFObjectStream
extends Object

PDFObjectStream

A PDFObjectStream object is used to read pdf 1.5 compressed objects Compressed objects are stored in a stream with the following structure:

 <<
 /Type /ObjStm
 /N     <number of compressed objects>
 /First <byte offset of first object>
 /Extends <ptr to another objstm>
 >>
 stream
 <objnum1> <byteoffset1> <objnum2> <byteoffset2> ...
 object1 object2 object3
 endstream
 

The PDFObjectStream object reads the offset table at the beginning of the stream and stores away the objects & byte numbers at initialization. To read a specific object, the PDFParser's stream data gets reset to the object stream's data and the position is set to the position in the table.

Constructor Summary

Constructors

Constructor	Description
PDFObjectStream(PDFStream s, PDFFile srcFile, PDFParser parser)

Method Summary

Modifier and Type	Method	Description
Object	get(int objnum, PDFParser p)
void	readOffsets(PDFParser p)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PDFObjectStream

public PDFObjectStream(PDFStream s,
 PDFFile srcFile,
 PDFParser parser)

Method Details

readOffsets

public void readOffsets(PDFParser p)

get

public Object get(int objnum,
 PDFParser p)