Class PdfEncodings

java.lang.Object

com.aowagie.text.pdf.PdfEncodings

final class PdfEncodings
extends Object

Supports fast encodings for winansi and PDFDocEncoding. Supports conversions from CJK encodings to CID. Supports custom encodings.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	PdfEncodings.Cp437Conversion
private static class	PdfEncodings.SymbolConversion
private static class	PdfEncodings.SymbolTTConversion
private static class	PdfEncodings.WingdingsConversion

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	CIDCHAR
private static final int	CIDNONE
private static final int	CIDRANGE
private static final HashMap	cmaps
private static HashMap	extraEncodings
private static final IntHashtable	pdfEncoding
private static final char[]	pdfEncodingByteToChar
(package private) static final IntHashtable	winansi
private static final char[]	winansiByteToChar

Constructor Summary

Constructors

Constructor	Description
PdfEncodings()

Method Summary

Modifier and Type	Method	Description
private static void	addExtraEncoding(String name, ExtraEncoding enc)	Adds an extra encoding.
private static void	breakLong(long n, int size, byte[] seqs)
private static String	convertCmap(String name, byte[] seq, int start, int length)	Converts a byte array encoded as name to a CID string.
static final byte[]	convertToBytes(char char1, String encoding)	Converts a String to a byte array according to the font's encoding.
static final byte[]	convertToBytes(String text, String encoding)	Converts a String to a byte array according to the font's encoding.
static final String	convertToString(byte[] bytes, String encoding)	Converts a byte array to a String according to the some encoding.
private static String	decodeSequence(byte[] seq, int start, int length, char[][] planes)
private static void	encodeSequence(int size, byte[] seqs, char cid, ArrayList planes)
private static void	encodeStream(InputStream in, ArrayList planes)
static boolean	isPdfDocEncoding(String text)	Checks is text only has PdfDocEncoding characters.
private static char[][]	readCmap(String name, byte[][] newline)
private static void	readCmap(String name, ArrayList planes)

Methods inherited from class Object

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

Field Details

CIDNONE

private static final int CIDNONE

See Also:

• Constant Field Values

CIDRANGE

private static final int CIDRANGE

See Also:

• Constant Field Values

CIDCHAR

private static final int CIDCHAR

See Also:

• Constant Field Values

winansiByteToChar

private static final char[] winansiByteToChar

pdfEncodingByteToChar

private static final char[] pdfEncodingByteToChar

winansi

static final IntHashtable winansi

pdfEncoding

private static final IntHashtable pdfEncoding

extraEncodings

private static HashMap extraEncodings

cmaps

private static final HashMap cmaps

Constructor Details

PdfEncodings

PdfEncodings()

Method Details

convertToBytes

public static final byte[] convertToBytes(String text,
 String encoding)

Converts a String to a byte array according to the font's encoding.

Parameters:

text - the String to be converted

encoding - the encoding

Returns:

an array of byte representing the conversion according to the font's encoding

convertToBytes

public static final byte[] convertToBytes(char char1,
 String encoding)

Converts a String to a byte array according to the font's encoding.

Parameters:

char1 - the char to be converted

encoding - the encoding

Returns:

an array of byte representing the conversion according to the font's encoding

convertToString

public static final String convertToString(byte[] bytes,
 String encoding)

Converts a byte array to a String according to the some encoding.

Parameters:

bytes - the bytes to convert

encoding - the encoding

Returns:

the converted String

isPdfDocEncoding

public static boolean isPdfDocEncoding(String text)

Checks is text only has PdfDocEncoding characters.

Parameters:

text - the String to test

Returns:

true if only PdfDocEncoding characters are present

convertCmap

private static String convertCmap(String name,
 byte[] seq,
 int start,
 int length)

Converts a byte array encoded as name to a CID string. This is needed to reach some CJK characters that don't exist in 16 bit Unicode.

The font to use this result must use the encoding "Identity-H" or "Identity-V".

See ftp://ftp.oreilly.com/pub/examples/nutshell/cjkv/adobe/.

Parameters:

name - the CJK encoding name

seq - the byte array to be decoded

start - the start offset in the data

length - the number of bytes to convert

Returns:

the CID string

decodeSequence

private static String decodeSequence(byte[] seq,
 int start,
 int length,
 char[][] planes)

readCmap

private static char[][] readCmap(String name,
 byte[][] newline)
                          throws IOException

Throws:

IOException

readCmap

private static void readCmap(String name,
 ArrayList planes)
                      throws IOException

Throws:

IOException

encodeStream

private static void encodeStream(InputStream in,
 ArrayList planes)
                          throws IOException

Throws:

IOException

breakLong

private static void breakLong(long n,
 int size,
 byte[] seqs)

encodeSequence

private static void encodeSequence(int size,
 byte[] seqs,
 char cid,
 ArrayList planes)

addExtraEncoding

private static void addExtraEncoding(String name,
 ExtraEncoding enc)

Adds an extra encoding.

Parameters:

name - the name of the encoding. The encoding recognition is case insensitive

enc - the conversion class