Package com.pd4ml.pdf.cos.parser

Class COSParser

java.lang.Object

com.pd4ml.pdf.cos.parser.COSParser

public final class COSParser
extends java.lang.Object

A low level, recursive-descent parser that turns the raw bytes of a PDF file into a populated COSDocument: every indirect object, the cross-reference table (classic tables, cross-reference streams, hybrid files, incremental updates via /Prev, and compressed objects held in object streams), and the trailer.

If the cross-reference information is missing, points at garbage, or forms a broken chain, parse() falls back to a brute-force linear scan for "n g obj" headers, the same recovery strategy used by essentially every real-world PDF reader to cope with the very common case of a corrupt or non-conformant xref section.

Constructor Summary

Constructors

Constructor	Description
COSParser(byte[] pdfBytes)
COSParser(byte[] pdfBytes, java.lang.String password)

Method Summary

Modifier and Type	Method	Description
static COSDocument	load(byte[] pdfBytes)
static COSDocument	load(byte[] pdfBytes, java.lang.String password)	Like load(byte[]), for a document protected by the PDF Standard security handler.
COSDocument	parse()

Methods inherited from class java.lang.Object

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

Constructor Detail

COSParser

public COSParser(byte[] pdfBytes)

COSParser

public COSParser(byte[] pdfBytes,
                 java.lang.String password)

Parameters:

password - tried as both the user and the owner password if the document turns out to be encrypted; pass "" for none.

Method Detail

load

public static COSDocument load(byte[] pdfBytes)
                        throws COSParseException

Throws:

COSParseException

load

public static COSDocument load(byte[] pdfBytes,
                               java.lang.String password)
                        throws COSParseException

Like load(byte[]), for a document protected by the PDF Standard security handler.

Throws:

COSParseException

parse

public COSDocument parse()
                  throws COSParseException

Throws:

COSParseException