Package org.openpdf.renderer.font.cid

Class ToUnicodeMap

java.lang.Object

org.openpdf.renderer.font.cid.PDFCMap

org.openpdf.renderer.font.cid.ToUnicodeMap

public class ToUnicodeMap
extends PDFCMap

Parses a CMAP and builds a lookup table to map CMAP based codes to unicode. This is not a fully functional CMAP parser but a stripped down parser that should be able to parse some limited variants of CMAPs that are used for the ToUnicode mapping found for some Type0 fonts.

Since:

03.08.2011

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	ToUnicodeMap.CharRangeMapping	Small helper class to define a char range.
private static class	ToUnicodeMap.CodeRangeMapping	Small helper class to define a code range.

Field Summary

Fields

Modifier and Type	Field	Description
private final List<ToUnicodeMap.CharRangeMapping>	charRangeMappings
private final List<ToUnicodeMap.CodeRangeMapping>	codeRangeMappings
private final Map<Character,Character>	singleCharMappings

Constructor Summary

Constructors

Constructor	Description
ToUnicodeMap(PDFObject map)	Constructor

Method Summary

Modifier and Type	Method	Description
private Character	lookupInRanges(char src)
char	map(char src)	map
private Character	parseChar(String charDef)	Parse a string of the format <0F3A> to a char.
private void	parseCharRangeMappingSection(BufferedReader bf, boolean isCid)
private void	parseCodeRangeLine(String line)
private void	parseCodeRangeMappingSection(BufferedReader bf, String line)
private void	parseMappings(PDFObject map)
private void	parseRangeLine(String line, boolean isCid)
private void	parseSingleCharMappingLine(String line, boolean isCID)
private void	parseSingleCharMappingSection(BufferedReader bf, boolean isCID)

Methods inherited from class org.openpdf.renderer.font.cid.PDFCMap

getCMap, getCMap, getFontID, parseCMap, populateCache

Methods inherited from class java.lang.Object

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

Field Details

singleCharMappings

private final Map<Character,Character> singleCharMappings

charRangeMappings

private final List<ToUnicodeMap.CharRangeMapping> charRangeMappings

codeRangeMappings

private final List<ToUnicodeMap.CodeRangeMapping> codeRangeMappings

Constructor Details

ToUnicodeMap

public ToUnicodeMap(PDFObject map)
             throws IOException

Constructor

Parameters:

map -

Throws:

IOException

Method Details

parseMappings

private void parseMappings(PDFObject map)
                    throws IOException

Parameters:

map -

Throws:

IOException

parseCharRangeMappingSection

private void parseCharRangeMappingSection(BufferedReader bf,
 boolean isCid)
                                   throws IOException

Parameters:

bf -

Throws:

IOException

parseCodeRangeMappingSection

private void parseCodeRangeMappingSection(BufferedReader bf,
 String line)
                                   throws IOException

Throws:

IOException

parseRangeLine

private void parseRangeLine(String line,
 boolean isCid)

Parameters:

line -

parseCodeRangeLine

private void parseCodeRangeLine(String line)

parseSingleCharMappingSection

private void parseSingleCharMappingSection(BufferedReader bf,
 boolean isCID)
                                    throws IOException

Parameters:

bf -

Throws:

IOException

parseSingleCharMappingLine

private void parseSingleCharMappingLine(String line,
 boolean isCID)

Parameters:

line -

parseChar

private Character parseChar(String charDef)

Parse a string of the format <0F3A> to a char.

Parameters:

charDef -

Returns:

map

public char map(char src)

map

Specified by:

map in class PDFCMap

See Also:

• PDFCMap.map(char)

lookupInRanges

private Character lookupInRanges(char src)

Parameters:

src -

Returns: