com.itextpdf.text.pdf

Class PRTokeniser

java.lang.Object

com.itextpdf.text.pdf.PRTokeniser

public class PRTokeniser
extends Object

Author:

Paulo Soares

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PRTokeniser.TokenType Enum representing the possible token types

Field Summary

Fields

Modifier and Type	Field and Description
static boolean[]	delims
protected int	generation
protected boolean	hexString
protected int	reference
protected String	stringValue
protected PRTokeniser.TokenType	type

Constructor Summary

Constructors

Constructor and Description
PRTokeniser(RandomAccessFileOrArray file) Creates a PRTokeniser for the specified RandomAccessFileOrArray.

Method Summary

Modifier and Type	Method and Description
void	backOnePosition(int ch)
void	checkFdfHeader()
static long[]	checkObjectStart(byte[] line)
char	checkPdfHeader()
void	close()
RandomAccessFileOrArray	getFile()
long	getFilePointer()
int	getGeneration()
int	getHeaderOffset()
static int	getHex(int v)
int	getReference()
RandomAccessFileOrArray	getSafeFile()
long	getStartxref()
String	getStringValue()
PRTokeniser.TokenType	getTokenType()
int	intValue()
static boolean	isDelimiter(int ch)
static boolean	isDelimiterWhitespace(int ch)
boolean	isHexString()
static boolean	isWhitespace(int ch) Is a certain character a whitespace?
static boolean	isWhitespace(int ch, boolean isWhitespace) Checks whether a character is a whitespace.
long	length()
long	longValue()
boolean	nextToken()
void	nextValidToken()
int	read()
boolean	readLineSegment(byte[] input) Reads data into the provided byte[].
boolean	readLineSegment(byte[] input, boolean isNullWhitespace) Reads data into the provided byte[].
String	readString(int size)
void	seek(long pos)
void	throwError(String error)

Methods inherited from class java.lang.Object

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

Field Detail

delims

public static final boolean[] delims

type

protected PRTokeniser.TokenType type

stringValue

protected String stringValue

reference

protected int reference

generation

protected int generation

hexString

protected boolean hexString

Constructor Detail

PRTokeniser

public PRTokeniser(RandomAccessFileOrArray file)

Creates a PRTokeniser for the specified RandomAccessFileOrArray. The beginning of the file is read to determine the location of the header, and the data source is adjusted as necessary to account for any junk that occurs in the byte source before the header

Parameters:

file - the source

Method Detail

seek

public void seek(long pos)
          throws IOException

Throws:

IOException

getFilePointer

public long getFilePointer()
                    throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Throws:

IOException

length

public long length()
            throws IOException

Throws:

IOException

read

public int read()
         throws IOException

Throws:

IOException

getSafeFile

public RandomAccessFileOrArray getSafeFile()

getFile

public RandomAccessFileOrArray getFile()

readString

public String readString(int size)
                  throws IOException

Throws:

IOException

isWhitespace

public static final boolean isWhitespace(int ch)

Is a certain character a whitespace? Currently checks on the following: '0', '9', '10', '12', '13', '32'.
The same as calling isWhiteSpace(ch, true).

Parameters:

ch - int

Returns:

boolean

Since:

5.5.1

isWhitespace

public static final boolean isWhitespace(int ch,
                                         boolean isWhitespace)

Checks whether a character is a whitespace. Currently checks on the following: '0', '9', '10', '12', '13', '32'.

Parameters:

ch - int

isWhitespace - boolean

Returns:

boolean

Since:

5.5.1

isDelimiter

public static final boolean isDelimiter(int ch)

isDelimiterWhitespace

public static final boolean isDelimiterWhitespace(int ch)

getTokenType

public PRTokeniser.TokenType getTokenType()

getStringValue

public String getStringValue()

getReference

public int getReference()

getGeneration

public int getGeneration()

backOnePosition

public void backOnePosition(int ch)

throwError

public void throwError(String error)
                throws IOException

Throws:

IOException

getHeaderOffset

public int getHeaderOffset()
                    throws IOException

Throws:

IOException

checkPdfHeader

public char checkPdfHeader()
                    throws IOException

Throws:

IOException

checkFdfHeader

public void checkFdfHeader()
                    throws IOException

Throws:

IOException

getStartxref

public long getStartxref()
                  throws IOException

Throws:

IOException

getHex

public static int getHex(int v)

nextValidToken

public void nextValidToken()
                    throws IOException

Throws:

IOException

nextToken

public boolean nextToken()
                  throws IOException

Throws:

IOException

longValue

public long longValue()

intValue

public int intValue()

readLineSegment

public boolean readLineSegment(byte[] input)
                        throws IOException

Reads data into the provided byte[]. Checks on leading whitespace. See isWhiteSpace(int) or isWhiteSpace(int, boolean) for a list of whitespace characters.
The same as calling readLineSegment(input, true).

Parameters:

input - byte[]

Returns:

boolean

Throws:

IOException

Since:

5.5.1

readLineSegment

public boolean readLineSegment(byte[] input,
                               boolean isNullWhitespace)
                        throws IOException

Reads data into the provided byte[]. Checks on leading whitespace. See isWhiteSpace(int) or isWhiteSpace(int, boolean) for a list of whitespace characters.

Parameters:

input - byte[]

isNullWhitespace - boolean to indicate whether '0' is whitespace or not. If in doubt, use true or overloaded method readLineSegment(input)

Returns:

boolean

Throws:

IOException

Since:

5.5.1

checkObjectStart

public static long[] checkObjectStart(byte[] line)

isHexString

public boolean isHexString()