Package org.verapdf.parser

Class SignatureParser

java.lang.Object

org.verapdf.parser.BaseParser

org.verapdf.parser.COSParser

org.verapdf.parser.SignatureParser

public class SignatureParser
extends COSParser

Class is extension of BaseParser for parsing of digital signature dictionaries. It calculates byte range of digital signature.

Author:

Sergey Shemyakov

Field Summary

Fields inherited from class org.verapdf.parser.COSParser

flag, integers, keyOfCurrentObject, LINEARIZATION_DICTIONARY_LOOKUP_SIZE, objects

Fields inherited from class org.verapdf.parser.BaseParser

source

Constructor Summary

Constructors

Constructor	Description
SignatureParser(SeekableInputStream stream, COSDocument document)	Constructor.

Method Summary

Modifier and Type	Method	Description
long[]	getByteRangeBySignatureOffset(long signatureOffset)	Calculates actual byte range of signature.
int	getFloatingBytesNumberForLastByteRangeObtained()
boolean	isStreamEnd()

Methods inherited from class org.verapdf.parser.COSParser

getArray, getDictionary, getDocument, getName, getStream, nextObject

Methods inherited from class org.verapdf.parser.BaseParser

appendToToken, clearToken, closeInputStream, findKeyword, findKeyword, getLine, getLine, getLineBytes, getRandomAccess, getRawBytes, getToken, initializeToken, isCR, isDigit, isDigit, isEOL, isFF, isHexDigit, isLF, isNextByteEOL, nextLine, nextToken, readName, readNumber, readUntilDelimiter, skipExpectedCharacter, skipSingleEol, skipSingleSpace, skipSingleSpace, skipSpaces, skipSpaces

Methods inherited from class java.lang.Object

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

Constructor Detail

SignatureParser

public SignatureParser(SeekableInputStream stream,
                       COSDocument document)
                throws IOException

Constructor.

Parameters:

stream - The stream to read the data from.

Throws:

IOException - If there is an error reading the input stream.

Method Detail

getByteRangeBySignatureOffset

public long[] getByteRangeBySignatureOffset(long signatureOffset)
                                     throws IOException

Calculates actual byte range of signature.

Returns:

array of 4 longs, which is byte range array.

Throws:

IOException

getFloatingBytesNumberForLastByteRangeObtained

public int getFloatingBytesNumberForLastByteRangeObtained()

isStreamEnd

public boolean isStreamEnd()