Package org.apache.fontbox.cmap

Class CMapParser

java.lang.Object

org.apache.fontbox.cmap.CMapParser

public class CMapParser
extends Object

Parses a CMap stream.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	CMapParser.LiteralName	Internal class.
private static final class	CMapParser.Operator	Internal class.

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	MARK_END_OF_ARRAY
private static final String	MARK_END_OF_DICTIONARY
private boolean	strictMode
private final byte[]	tokenParserByteBuffer

Constructor Summary

Constructors

Constructor	Description
CMapParser()	Creates a new instance of CMapParser.
CMapParser(boolean strictMode)	Creates a new instance of CMapParser.

Method Summary

Modifier and Type	Method	Description
private void	addMappingFrombfrange(CMap cmap, byte[] startCode, int values, byte[] tokenBytes)
private void	addMappingFrombfrange(CMap cmap, byte[] startCode, List<byte[]> tokenBytesList)
private void	checkExpectedOperator(CMapParser.Operator operator, String expectedOperatorName, String rangeName)	Throws an IOException if expectedOperatorName not equals operator.op
private static String	createStringFromBytes(byte[] bytes)
private RandomAccessRead	getExternalCMap(String name)	Returns a RandomAccessRead containing the given "use" CMap.
private static boolean	increment(byte[] data, int position, boolean useStrictMode)
private static boolean	isDelimiter(int aByte)	Is this a standard PDF delimiter character?
private static boolean	isWhitespaceOrEOF(int aByte)
CMap	parse(RandomAccessRead randomAccessRead)	This will parse the stream and create a cmap object.
private void	parseBeginbfchar(Number cosCount, RandomAccessRead randomAccessRead, CMap result)
private void	parseBeginbfrange(Number cosCount, RandomAccessRead randomAccessRead, CMap result)
private void	parseBegincidchar(Number cosCount, RandomAccessRead randomAccessRead, CMap result)
private void	parseBegincidrange(int numberOfLines, RandomAccessRead randomAccessRead, CMap result)
private void	parseBegincodespacerange(Number cosCount, RandomAccessRead randomAccessRead, CMap result)
private byte[]	parseByteArray(RandomAccessRead randomAccessRead)
private Integer	parseInteger(RandomAccessRead randomAccessRead)
private void	parseLiteralName(CMapParser.LiteralName literal, RandomAccessRead randomAccessRead, CMap result)
private Object	parseNextToken(RandomAccessRead randomAccessRead)
CMap	parsePredefined(String name)	Parses a predefined CMap.
private void	parseUsecmap(CMapParser.LiteralName useCmapName, CMap result)
private List<Object>	readArray(RandomAccessRead randomAccessRead)
private Object	readDictionary(RandomAccessRead randomAccessRead)
private String	readLine(RandomAccessRead randomAccessRead, int firstByte)
private CMapParser.LiteralName	readLiteralName(RandomAccessRead randomAccessRead)
private Number	readNumber(RandomAccessRead randomAccessRead, int firstByte)
private CMapParser.Operator	readOperator(RandomAccessRead randomAccessRead, int firstByte)
private String	readString(RandomAccessRead randomAccessRead)
private void	readUntilEndOfLine(RandomAccessRead randomAccessRead, StringBuilder buf)

Methods inherited from class java.lang.Object

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

Field Details

MARK_END_OF_DICTIONARY

private static final String MARK_END_OF_DICTIONARY

See Also:

• Constant Field Values

MARK_END_OF_ARRAY

private static final String MARK_END_OF_ARRAY

See Also:

• Constant Field Values

tokenParserByteBuffer

private final byte[] tokenParserByteBuffer

strictMode

private boolean strictMode

Constructor Details

CMapParser

public CMapParser()

Creates a new instance of CMapParser.

CMapParser

public CMapParser(boolean strictMode)

Creates a new instance of CMapParser.

Parameters:

strictMode - activates the strict mode used for inline CMaps

Method Details

parsePredefined

public CMap parsePredefined(String name)
                     throws IOException

Parses a predefined CMap.

Parameters:

name - CMap name.

Returns:

The parsed predefined CMap as a java object, never null.

Throws:

IOException - If the CMap could not be parsed.

parse

public CMap parse(RandomAccessRead randomAccessRead)
           throws IOException

This will parse the stream and create a cmap object.

Parameters:

randomAccessRead - the source of the CMap to be parsed.

Returns:

The parsed source as a java object, never null.

Throws:

IOException - If there is an error parsing the data.

parseUsecmap

private void parseUsecmap(CMapParser.LiteralName useCmapName,
 CMap result)
                   throws IOException

Throws:

IOException

parseLiteralName

private void parseLiteralName(CMapParser.LiteralName literal,
 RandomAccessRead randomAccessRead,
 CMap result)
                       throws IOException

Throws:

IOException

checkExpectedOperator

private void checkExpectedOperator(CMapParser.Operator operator,
 String expectedOperatorName,
 String rangeName)
                            throws IOException

Throws an IOException if expectedOperatorName not equals operator.op

Parameters:

operator - Instance of operator

expectedOperatorName - Expected name of operator

rangeName - The name of the range in which the operator is expected (without a tilde character), to be used in the exception message.

Throws:

IOException - if expectedOperatorName not equals operator.op

parseBegincodespacerange

private void parseBegincodespacerange(Number cosCount,
 RandomAccessRead randomAccessRead,
 CMap result)
                               throws IOException

Throws:

IOException

parseBeginbfchar

private void parseBeginbfchar(Number cosCount,
 RandomAccessRead randomAccessRead,
 CMap result)
                       throws IOException

Throws:

IOException

parseBegincidrange

private void parseBegincidrange(int numberOfLines,
 RandomAccessRead randomAccessRead,
 CMap result)
                         throws IOException

Throws:

IOException

parseBegincidchar

private void parseBegincidchar(Number cosCount,
 RandomAccessRead randomAccessRead,
 CMap result)
                        throws IOException

Throws:

IOException

parseBeginbfrange

private void parseBeginbfrange(Number cosCount,
 RandomAccessRead randomAccessRead,
 CMap result)
                        throws IOException

Throws:

IOException

addMappingFrombfrange

private void addMappingFrombfrange(CMap cmap,
 byte[] startCode,
 List<byte[]> tokenBytesList)

addMappingFrombfrange

private void addMappingFrombfrange(CMap cmap,
 byte[] startCode,
 int values,
 byte[] tokenBytes)

getExternalCMap

private RandomAccessRead getExternalCMap(String name)
                                  throws IOException

Returns a RandomAccessRead containing the given "use" CMap.

Parameters:

name - Name of the given "use" CMap resource.

Throws:

IOException - if the CMap resource doesn't exist or if there is an error opening it.

parseNextToken

private Object parseNextToken(RandomAccessRead randomAccessRead)
                       throws IOException

Throws:

IOException

parseInteger

private Integer parseInteger(RandomAccessRead randomAccessRead)
                      throws IOException

Throws:

IOException

parseByteArray

private byte[] parseByteArray(RandomAccessRead randomAccessRead)
                       throws IOException

Throws:

IOException

readArray

private List<Object> readArray(RandomAccessRead randomAccessRead)
                        throws IOException

Throws:

IOException

readString

private String readString(RandomAccessRead randomAccessRead)
                   throws IOException

Throws:

IOException

readLine

private String readLine(RandomAccessRead randomAccessRead,
 int firstByte)
                 throws IOException

Throws:

IOException

readLiteralName

private CMapParser.LiteralName readLiteralName(RandomAccessRead randomAccessRead)
                                        throws IOException

Throws:

IOException

readOperator

private CMapParser.Operator readOperator(RandomAccessRead randomAccessRead,
 int firstByte)
                                  throws IOException

Throws:

IOException

readNumber

private Number readNumber(RandomAccessRead randomAccessRead,
 int firstByte)
                   throws IOException

Throws:

IOException

readDictionary

private Object readDictionary(RandomAccessRead randomAccessRead)
                       throws IOException

Throws:

IOException

readUntilEndOfLine

private void readUntilEndOfLine(RandomAccessRead randomAccessRead,
 StringBuilder buf)
                         throws IOException

Throws:

IOException

isWhitespaceOrEOF

private static boolean isWhitespaceOrEOF(int aByte)

isDelimiter

private static boolean isDelimiter(int aByte)

Is this a standard PDF delimiter character?

increment

private static boolean increment(byte[] data,
 int position,
 boolean useStrictMode)

createStringFromBytes

private static String createStringFromBytes(byte[] bytes)