Package org.apache.fop.fonts.cff

Class CFFDataReader

java.lang.Object

org.apache.fop.fonts.cff.CFFDataReader

public class CFFDataReader
extends Object

A class to read the CFF data from an OTF CFF font file.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	CFFDataReader.CFFIndexData	An object used to hold index data from the CFF data
class	CFFDataReader.CFFSubTable	Parent class which provides the ability to retrieve byte data from a sub-table.
class	CFFDataReader.CustomEncoding
private static class	CFFDataReader.DataLocation
static class	CFFDataReader.DICTEntry	A class containing data for a dictionary entry
class	CFFDataReader.FDSelect
class	CFFDataReader.FontDict
class	CFFDataReader.Format0Encoding
class	CFFDataReader.Format0FDSelect
class	CFFDataReader.Format1Encoding
class	CFFDataReader.Format3FDSelect

Field Summary

Fields

Modifier and Type	Field	Description
private org.apache.fontbox.cff.CFFDataInput	cffData
private CFFDataReader.CFFIndexData	charStringIndex
private static final int	DOUBLE_BYTE_OPERATOR
private CFFDataReader.CustomEncoding	encoding
private List<CFFDataReader.FontDict>	fdFonts
private CFFDataReader.FDSelect	fdSelect
private CFFDataReader.CFFIndexData	globalIndexSubr
private byte[]	header
private CFFDataReader.CFFIndexData	localIndexSubr
private CFFDataReader.CFFIndexData	nameIndex
private static final int	NUM_STANDARD_STRINGS
private CFFDataReader.CFFIndexData	stringIndex
private LinkedHashMap<String,CFFDataReader.DICTEntry>	topDict	Commonly used parsed dictionaries
private CFFDataReader.CFFIndexData	topDICTIndex

Constructor Summary

Constructors

Constructor	Description
CFFDataReader()
CFFDataReader(byte[] cffDataArray)	Constructor for the CFF data reader which accepts the CFF byte data as an argument.
CFFDataReader(FontFileReader fontFile)	Constructor for the CFF data reader which accepts a FontFileReader object which points to the original font file as an argument.

Method Summary

Modifier and Type	Method	Description
org.apache.fontbox.cff.CFFDataInput	getCFFData()
private byte[]	getCFFOffsetBytes(int offset, int length)	Retrieves a number of bytes from the CFF data stream
CFFDataReader.CFFIndexData	getCharStringIndex()
CFFDataReader.CustomEncoding	getEncoding()
List<CFFDataReader.FontDict>	getFDFonts()
CFFDataReader.FDSelect	getFDSelect()
CFFDataReader.CFFIndexData	getGlobalIndexSubr()
byte[]	getHeader()
CFFDataReader.CFFIndexData	getLocalIndexSubr()
org.apache.fontbox.cff.CFFDataInput	getLocalSubrsForGlyph(int glyph)
CFFDataReader.CFFIndexData	getNameIndex()
Map<String,CFFDataReader.DICTEntry>	getPrivateDict(CFFDataReader.DICTEntry privateEntry)
byte[]	getPrivateDictBytes(CFFDataReader.DICTEntry privateEntry)
int	getSIDFromGID(int charsetOffset, int gid)	Retrieves the SID for the given GID object
private int	getSIDFromGIDFormat(int gid, int format)
private String	getString(int sid)
CFFDataReader.CFFIndexData	getStringIndex()
LinkedHashMap<String,CFFDataReader.DICTEntry>	getTopDictEntries()
CFFDataReader.CFFIndexData	getTopDictIndex()
private List<CFFDataReader.FontDict>	parseCIDData()
LinkedHashMap<String,CFFDataReader.DICTEntry>	parseDictData(byte[] dictData)	Parses the dictionary data and returns a map of objects for each entry
private void	readCFFData()
CFFDataReader.CFFIndexData	readCharStringIndex()	Parses the char string index from the CFF byte data
private CFFDataReader.CustomEncoding	readEncoding()
private CFFDataReader.FDSelect	readFDSelect()
private CFFDataReader.Format0Encoding	readFormat0Encoding(int format, int numEntries)
private CFFDataReader.Format0FDSelect	readFormat0FDSelect()
private CFFDataReader.Format1Encoding	readFormat1Encoding(int format, int numEntries)
private CFFDataReader.Format3FDSelect	readFormat3FDSelect()
private byte[]	readHeader()
private CFFDataReader.CFFIndexData	readIndex()
CFFDataReader.CFFIndexData	readIndex(int offset)	Reads a CFF index object are the specified offset position
CFFDataReader.CFFIndexData	readIndex(org.apache.fontbox.cff.CFFDataInput input)	Reads an index from the current position of the CFFDataInput object
private CFFDataReader.CFFIndexData	readLocalIndexSubrs()
private boolean	readNibble(StringBuilder realNumber, int nibble)
private CFFDataReader.FontDict	setFDData(CFFDataReader.DICTEntry privateFDEntry, CFFDataReader.FontDict newFontDict)

Methods inherited from class java.lang.Object

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

Field Details

cffData

private org.apache.fontbox.cff.CFFDataInput cffData

header

private byte[] header

nameIndex

private CFFDataReader.CFFIndexData nameIndex

topDICTIndex

private CFFDataReader.CFFIndexData topDICTIndex

stringIndex

private CFFDataReader.CFFIndexData stringIndex

charStringIndex

private CFFDataReader.CFFIndexData charStringIndex

globalIndexSubr

private CFFDataReader.CFFIndexData globalIndexSubr

localIndexSubr

private CFFDataReader.CFFIndexData localIndexSubr

encoding

private CFFDataReader.CustomEncoding encoding

fdSelect

private CFFDataReader.FDSelect fdSelect

fdFonts

private List<CFFDataReader.FontDict> fdFonts

DOUBLE_BYTE_OPERATOR

private static final int DOUBLE_BYTE_OPERATOR

See Also:

• Constant Field Values

NUM_STANDARD_STRINGS

private static final int NUM_STANDARD_STRINGS

See Also:

• Constant Field Values

topDict

private LinkedHashMap<String,CFFDataReader.DICTEntry> topDict

Commonly used parsed dictionaries

Constructor Details

CFFDataReader

public CFFDataReader()

CFFDataReader

public CFFDataReader(byte[] cffDataArray)
              throws IOException

Constructor for the CFF data reader which accepts the CFF byte data as an argument.

Parameters:

cffDataArray - A byte array which holds the CFF data

Throws:

IOException

CFFDataReader

public CFFDataReader(FontFileReader fontFile)
              throws IOException

Constructor for the CFF data reader which accepts a FontFileReader object which points to the original font file as an argument.

Parameters:

fontFile - The font file as represented by a FontFileReader object

Throws:

IOException

Method Details

readCFFData

private void readCFFData()
                  throws IOException

Throws:

IOException

getPrivateDict

public Map<String,CFFDataReader.DICTEntry> getPrivateDict(CFFDataReader.DICTEntry privateEntry)
                                                   throws IOException

Throws:

IOException

getPrivateDictBytes

public byte[] getPrivateDictBytes(CFFDataReader.DICTEntry privateEntry)
                           throws IOException

Throws:

IOException

getCFFOffsetBytes

private byte[] getCFFOffsetBytes(int offset,
 int length)
                          throws IOException

Retrieves a number of bytes from the CFF data stream

Parameters:

offset - The offset of the bytes to retrieve

length - The number of bytes to retrieve

Returns:

Returns a byte array of requested bytes

Throws:

IOException - Throws an IO Exception if an error occurs

parseDictData

public LinkedHashMap<String,CFFDataReader.DICTEntry> parseDictData(byte[] dictData)
                                                            throws IOException

Parses the dictionary data and returns a map of objects for each entry

Parameters:

dictData - The data for the dictionary data

Returns:

Returns a map of type DICTEntry identified by the operand name

Throws:

IOException - Throws an IO Exception if an error occurs

readNibble

private boolean readNibble(StringBuilder realNumber,
 int nibble)

readHeader

private byte[] readHeader()
                   throws IOException

Throws:

IOException

readIndex

public CFFDataReader.CFFIndexData readIndex(int offset)
                                     throws IOException

Reads a CFF index object are the specified offset position

Parameters:

offset - The position of the index object to read

Returns:

Returns an object representing the index

Throws:

IOException - Throws an IO Exception if an error occurs

readIndex

private CFFDataReader.CFFIndexData readIndex()
                                      throws IOException

Throws:

IOException

readIndex

public CFFDataReader.CFFIndexData readIndex(org.apache.fontbox.cff.CFFDataInput input)
                                     throws IOException

Reads an index from the current position of the CFFDataInput object

Parameters:

input - The object holding the CFF byte data

Returns:

Returns an object representing the index

Throws:

IOException - Throws an IO Exception if an error occurs

getSIDFromGID

public int getSIDFromGID(int charsetOffset,
 int gid)
                  throws IOException

Retrieves the SID for the given GID object

Parameters:

charsetOffset - The offset of the charset data

gid - The GID for which to retrieve the SID

Returns:

Returns the SID as an integer

Throws:

IOException

getSIDFromGIDFormat

private int getSIDFromGIDFormat(int gid,
 int format)
                         throws IOException

Throws:

IOException

getHeader

public byte[] getHeader()

getNameIndex

public CFFDataReader.CFFIndexData getNameIndex()

getTopDictIndex

public CFFDataReader.CFFIndexData getTopDictIndex()

getTopDictEntries

public LinkedHashMap<String,CFFDataReader.DICTEntry> getTopDictEntries()

getStringIndex

public CFFDataReader.CFFIndexData getStringIndex()

getGlobalIndexSubr

public CFFDataReader.CFFIndexData getGlobalIndexSubr()

getLocalIndexSubr

public CFFDataReader.CFFIndexData getLocalIndexSubr()

getCharStringIndex

public CFFDataReader.CFFIndexData getCharStringIndex()

getCFFData

public org.apache.fontbox.cff.CFFDataInput getCFFData()

getEncoding

public CFFDataReader.CustomEncoding getEncoding()

getFDSelect

public CFFDataReader.FDSelect getFDSelect()

getFDFonts

public List<CFFDataReader.FontDict> getFDFonts()

getLocalSubrsForGlyph

public org.apache.fontbox.cff.CFFDataInput getLocalSubrsForGlyph(int glyph)
                                                          throws IOException

Throws:

IOException

readCharStringIndex

public CFFDataReader.CFFIndexData readCharStringIndex()
                                               throws IOException

Parses the char string index from the CFF byte data

Returns:

Returns the char string index object

Throws:

IOException - Throws an IO Exception if an error occurs

readEncoding

private CFFDataReader.CustomEncoding readEncoding()
                                           throws IOException

Throws:

IOException

readFormat0Encoding

private CFFDataReader.Format0Encoding readFormat0Encoding(int format,
 int numEntries)
                                                   throws IOException

Throws:

IOException

readFormat1Encoding

private CFFDataReader.Format1Encoding readFormat1Encoding(int format,
 int numEntries)
                                                   throws IOException

Throws:

IOException

readFDSelect

private CFFDataReader.FDSelect readFDSelect()
                                     throws IOException

Throws:

IOException

readFormat0FDSelect

private CFFDataReader.Format0FDSelect readFormat0FDSelect()
                                                   throws IOException

Throws:

IOException

readFormat3FDSelect

private CFFDataReader.Format3FDSelect readFormat3FDSelect()
                                                   throws IOException

Throws:

IOException

parseCIDData

private List<CFFDataReader.FontDict> parseCIDData()
                                           throws IOException

Throws:

IOException

setFDData

private CFFDataReader.FontDict setFDData(CFFDataReader.DICTEntry privateFDEntry,
 CFFDataReader.FontDict newFontDict)
                                  throws IOException

Throws:

IOException

getString

private String getString(int sid)
                  throws IOException

Throws:

IOException

readLocalIndexSubrs

private CFFDataReader.CFFIndexData readLocalIndexSubrs()
                                                throws IOException

Throws:

IOException