Module org.sejda.sambox

Package org.sejda.sambox.input

Class ContentStreamParser

java.lang.Object

org.sejda.sambox.input.SourceReader

org.sejda.sambox.input.ContentStreamParser

All Implemented Interfaces:

Closeable, AutoCloseable

public class ContentStreamParser
extends SourceReader

Component responsible for parsing a content stream to extract operands and such.

Field Summary

Fields

Modifier and Type	Field	Description
private final ContentStreamCOSParser	cosParser
private final List<Object>	tokens

Fields inherited from class org.sejda.sambox.input.SourceReader

OBJ

Constructor Summary

Constructors

Constructor	Description
ContentStreamParser(org.sejda.io.SeekableSource source)
ContentStreamParser(PDContentStream stream)

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the SeekableSource this reader was created from.
private boolean	isEndOfImage()
private boolean	isEndOfImageFrom(long position)
private byte[]	nextImageData()	Reads data until it finds an "EI" operator followed by a whitespace.
private void	nextInlineImage(Operator operator)
private Object	nextOperator()
Object	nextParsedToken()
List<Object>	tokens()

Methods inherited from class org.sejda.sambox.input.SourceReader

isNextToken, length, offset, position, position, readGenerationNumber, readHexString, readInt, readIntegerNumber, readLine, readLiteralString, readLong, readName, readNumber, readObjectNumber, readToken, skipExpected, skipExpected, skipExpectedIndirectObjectDefinition, skipIndirectObjectDefinition, skipSpaces, skipTokenIfValue, source, unreadIfValid, unreadSpaces, unreadUntilSpaces

Methods inherited from class java.lang.Object

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

Field Details

cosParser

private final ContentStreamCOSParser cosParser

tokens

private final List<Object> tokens

Constructor Details

ContentStreamParser

public ContentStreamParser(PDContentStream stream)
                    throws IOException

Throws:

IOException

ContentStreamParser

public ContentStreamParser(org.sejda.io.SeekableSource source)

Method Details

tokens

public List<Object> tokens()
                    throws IOException

Returns:

a list of tokens retrieved parsing the source this parser was created from.

Throws:

IOException

nextParsedToken

public Object nextParsedToken()
                       throws IOException

Returns:

the next token parsed from the content stream

Throws:

IOException

nextOperator

private Object nextOperator()
                     throws IOException

Throws:

IOException

nextInlineImage

private void nextInlineImage(Operator operator)
                      throws IOException

Throws:

IOException

nextImageData

private byte[] nextImageData()
                      throws IOException

Reads data until it finds an "EI" operator followed by a whitespace.

Returns:

the image data

Throws:

IOException

isEndOfImageFrom

private boolean isEndOfImageFrom(long position)
                          throws IOException

Throws:

IOException

isEndOfImage

private boolean isEndOfImage()
                      throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Description copied from class: SourceReader

Closes the SeekableSource this reader was created from.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class SourceReader

Throws:

IOException