Class Type1SubsetFile

java.lang.Object

org.apache.fop.fonts.type1.Type1SubsetFile

public class Type1SubsetFile
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Type1SubsetFile.BinaryCoder	A class to encode and decode sections of a type 1 font file.
static final class	Type1SubsetFile.BytesNumber	A class used to store the last number operand and also it's size in bytes

Field Summary

Fields

Modifier and Type	Field	Description
protected List<String>	charNames
protected String	eol
private byte[]	fullFont
protected List<PostscriptParser.PSElement>	headerSection
protected static final org.apache.commons.logging.Log	LOG
protected List<PostscriptParser.PSElement>	mainSection
private static final int	OP_CALLOTHERSUBR
private static final int	OP_CALLSUBR
private static final int	OP_SEAC
private SingleByteFont	sbfont
protected boolean	standardEncoding
protected HashMap<String,byte[]>	subsetCharStrings
protected boolean	subsetSubroutines
protected LinkedHashMap<Integer,byte[]>	uniqueSubs

Constructor Summary

Constructors

Constructor	Description
Type1SubsetFile()

Method Summary

Modifier and Type	Method	Description
private byte[]	addSubroutine(PostscriptParser.PSFixedArray subroutines, List<Type1SubsetFile.BytesNumber> operands, byte[] decoded, List<String> subsetEncodingEntries, byte[] data, int i, int opLength, int existingSubrRef, int subrID)
private void	addToCharNames(String encodingEntry)
(package private) byte[]	concatArray(byte[] a, byte[] b)	Concatenate two byte arrays together
private byte[]	constructNewRefData(int curDataPos, byte[] currentData, List<Type1SubsetFile.BytesNumber> operands, int opNum, int curSubsetIndexSize, int operatorLength)
private byte[]	createNewRef(int newRef, int forceLength)
byte[]	createSubset(InputStream in, SingleByteFont sbfont)
private byte[]	createSubset(SingleByteFont sbfont, boolean subsetSubroutines)	Creates a new subset from the given type 1 font input stream
private byte[]	createSubsetCharStrings(byte[] decoded, byte[] data, PostscriptParser.PSFixedArray subroutines, List<String> subsetEncodingEntries)
protected String	findVariable(byte[] decoded, List<PostscriptParser.PSElement> elements, String[] matches, String fallback)
protected byte[]	getBinaryEntry(int[] position, byte[] decoded)	Returns a section of a byte array determined by it's start and end position.
protected PostscriptParser.PSElement	getElement(String elementID, List<PostscriptParser.PSElement> elements)
protected String	getEntryPart(String entry, int part)
(package private) int	getOperandsLength(List<Type1SubsetFile.BytesNumber> operands)
(package private) int	getOpPosition(int opNum, List<Type1SubsetFile.BytesNumber> operands)
private int	getSubrIndex(int subID)
private List<String>	readEncoding(PostscriptParser.PSElement encoding)
private boolean	readMainSection(List<PostscriptParser.PSElement> mainSection, byte[] decoded, List<String> subsetEncodingEntries, PostscriptParser.PSElement charStrings)
(package private) String	readVariableContents(String variable)
protected List<String>	searchEntries(HashMap<Integer,String> encodingEntries, int glyph)
byte[]	stitchFont(ByteArrayOutputStream boasHeader, ByteArrayOutputStream boasMain, ByteArrayOutputStream boasTrailer)
(package private) ByteArrayOutputStream	updateSectionSize(int size)
protected ByteArrayOutputStream	writeHeader(PFBData pfbData, PostscriptParser.PSElement encoding)
protected ByteArrayOutputStream	writeMainSection(byte[] decoded, List<PostscriptParser.PSElement> mainSection, PostscriptParser.PSElement charStrings)
protected void	writeString(String entry, ByteArrayOutputStream boas)

Methods inherited from class Object

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

Field Details

LOG

protected static final org.apache.commons.logging.Log LOG

subsetCharStrings

protected HashMap<String,byte[]> subsetCharStrings

charNames

protected List<String> charNames

uniqueSubs

protected LinkedHashMap<Integer,byte[]> uniqueSubs

sbfont

private SingleByteFont sbfont

eol

protected String eol

subsetSubroutines

protected boolean subsetSubroutines

fullFont

private byte[] fullFont

headerSection

protected List<PostscriptParser.PSElement> headerSection

mainSection

protected List<PostscriptParser.PSElement> mainSection

standardEncoding

protected boolean standardEncoding

OP_SEAC

private static final int OP_SEAC

See Also:

• Constant Field Values

OP_CALLSUBR

private static final int OP_CALLSUBR

See Also:

• Constant Field Values

OP_CALLOTHERSUBR

private static final int OP_CALLOTHERSUBR

See Also:

• Constant Field Values

Constructor Details

Type1SubsetFile

public Type1SubsetFile()

Method Details

createSubset

public byte[] createSubset(InputStream in,
 SingleByteFont sbfont)
                    throws IOException

Throws:

IOException

createSubset

private byte[] createSubset(SingleByteFont sbfont,
 boolean subsetSubroutines)
                     throws IOException

Creates a new subset from the given type 1 font input stream

Parameters:

sbfont - The font object containing information such as the characters from which to create the subset

subsetSubroutines - This option will force the subset to include all subroutines.

Returns:

Returns the subset as a byte array

Throws:

IOException

stitchFont

public byte[] stitchFont(ByteArrayOutputStream boasHeader,
 ByteArrayOutputStream boasMain,
 ByteArrayOutputStream boasTrailer)
                  throws IOException

Throws:

IOException

readEncoding

private List<String> readEncoding(PostscriptParser.PSElement encoding)

searchEntries

protected List<String> searchEntries(HashMap<Integer,String> encodingEntries,
 int glyph)

writeHeader

protected ByteArrayOutputStream writeHeader(PFBData pfbData,
 PostscriptParser.PSElement encoding)
                                     throws IOException

Throws:

IOException

updateSectionSize

ByteArrayOutputStream updateSectionSize(int size)
                                 throws IOException

Throws:

IOException

readMainSection

private boolean readMainSection(List<PostscriptParser.PSElement> mainSection,
 byte[] decoded,
 List<String> subsetEncodingEntries,
 PostscriptParser.PSElement charStrings)

createSubsetCharStrings

private byte[] createSubsetCharStrings(byte[] decoded,
 byte[] data,
 PostscriptParser.PSFixedArray subroutines,
 List<String> subsetEncodingEntries)

getSubrIndex

private int getSubrIndex(int subID)

addSubroutine

private byte[] addSubroutine(PostscriptParser.PSFixedArray subroutines,
 List<Type1SubsetFile.BytesNumber> operands,
 byte[] decoded,
 List<String> subsetEncodingEntries,
 byte[] data,
 int i,
 int opLength,
 int existingSubrRef,
 int subrID)

writeMainSection

protected ByteArrayOutputStream writeMainSection(byte[] decoded,
 List<PostscriptParser.PSElement> mainSection,
 PostscriptParser.PSElement charStrings)
                                          throws IOException

Throws:

IOException

findVariable

protected String findVariable(byte[] decoded,
 List<PostscriptParser.PSElement> elements,
 String[] matches,
 String fallback)
                       throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

readVariableContents

String readVariableContents(String variable)

addToCharNames

private void addToCharNames(String encodingEntry)

writeString

protected void writeString(String entry,
 ByteArrayOutputStream boas)
                    throws IOException

Throws:

IOException

constructNewRefData

private byte[] constructNewRefData(int curDataPos,
 byte[] currentData,
 List<Type1SubsetFile.BytesNumber> operands,
 int opNum,
 int curSubsetIndexSize,
 int operatorLength)

getOpPosition

int getOpPosition(int opNum,
 List<Type1SubsetFile.BytesNumber> operands)

getOperandsLength

int getOperandsLength(List<Type1SubsetFile.BytesNumber> operands)

createNewRef

private byte[] createNewRef(int newRef,
 int forceLength)

concatArray

byte[] concatArray(byte[] a,
 byte[] b)

Concatenate two byte arrays together

Parameters:

a - The first array

b - The second array

Returns:

The concatenated array

getBinaryEntry

protected byte[] getBinaryEntry(int[] position,
 byte[] decoded)

Returns a section of a byte array determined by it's start and end position.

Parameters:

position - An array containing both the start and end position of the section to copy.

decoded - The array from which to copy a section of data

Returns:

Returns the copy of the data section

getEntryPart

protected String getEntryPart(String entry,
 int part)

getElement

protected PostscriptParser.PSElement getElement(String elementID,
 List<PostscriptParser.PSElement> elements)