de.intarsys.pdf.font
Class StreamBasedCMap

java.lang.Object
  de.intarsys.pdf.cos.COSBasedObject
      de.intarsys.pdf.font.CMap
          de.intarsys.pdf.font.StreamBasedCMap

All Implemented Interfaces:

ICOSObjectListener, de.intarsys.tools.attribute.IAttributeSupport

Direct Known Subclasses:

InternalCMap, NamedCMap

public abstract class StreamBasedCMap
extends CMap

A stream based mapping from character codes to CID's.

The data in the stream defines the mapping from character codes to a font number and a character selector. The data must follow the syntax defined in Adobe Technical Note #5014, Adobe CMap and CIDFont Files Specification.

Nested Class Summary

static class

StreamBasedCMap.MetaClass The meta class implementation

Field Summary

static COSName	DK_CIDSystemInfo
static COSName	DK_CMapName
static COSName	DK_UseCMap
static COSName	DK_WMode
static StreamBasedCMap.MetaClass	META The meta class instance

Method Summary

char[]	getChars(int codepoint) Get the char[] for the codepoint or null if not available.
int	getDecoded(int codepoint) Get the character for the codepoint or -1 if not available.
COSObject	getDefinition(COSName key)
int	getEncoded(int character) Get the codepoint for the the character or -1 if invalid.
int	getNextDecoded(InputStream is) Get the next decoded character from the input stream.
int	getNextEncoded(InputStream is) The next codepoint from the input stream.
void	putNextDecoded(OutputStream os, int character) Put the next character onto the input stream after encoding.
void	putNextEncoded(OutputStream os, int codepoint) Put the next codepoint onto the input stream.

Methods inherited from class de.intarsys.pdf.font.CMap

toInt, toInt

Methods inherited from class de.intarsys.pdf.cos.COSBasedObject

changed, cosGetArray, cosGetDict, cosGetDoc, cosGetField, cosGetObject, cosGetStream, cosHasField, cosRemoveField, cosSetField, getAttribute, getFieldBoolean, getFieldDate, getFieldFixed, getFieldFixedArray, getFieldInt, getFieldMLString, getFieldString, invalidateCaches, removeAttribute, setAttribute, setFieldBoolean, setFieldFixed, setFieldInt, setFieldMLString, setFieldName, setFieldObject, setFieldString, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

DK_CIDSystemInfo

public static final COSName DK_CIDSystemInfo

DK_CMapName

public static final COSName DK_CMapName

DK_UseCMap

public static final COSName DK_UseCMap

DK_WMode

public static final COSName DK_WMode

META

public static final StreamBasedCMap.MetaClass META

The meta class instance

Method Detail

getChars

public char[] getChars(int codepoint)

Description copied from class: CMap

Get the char[] for the codepoint or null if not available. This is used in /ToUnicode mappings where a codepoint may map to a string (as for example in ligatures).

Specified by:

getChars in class CMap

Parameters:

codepoint - The codepoint

Returns:

The corresponding char[] for the codepoint.

getDecoded

public int getDecoded(int codepoint)

Description copied from class: CMap

Get the character for the codepoint or -1 if not available.

Specified by:

getDecoded in class CMap

Parameters:

codepoint - The codepoint

Returns:

Get the character for the codepoint or -1 if not available.

getDefinition

public COSObject getDefinition(COSName key)

getEncoded

public int getEncoded(int character)

Description copied from class: CMap

Get the codepoint for the the character or -1 if invalid.

Specified by:

getEncoded in class CMap

Parameters:

character - The character to look up.

Returns:

Get the codepoint for the the character or -1 if invalid.

getNextDecoded

public int getNextDecoded(InputStream is)
                   throws IOException

Description copied from class: CMap

Get the next decoded character from the input stream. This method reads as much bytes as needed by the encoding and returns the decoded character.

Specified by:

getNextDecoded in class CMap

Parameters:

is - The input stream with encoded data.

Returns:

The next decoded character from the input stream.

Throws:

IOException

getNextEncoded

public int getNextEncoded(InputStream is)
                   throws IOException

Description copied from class: CMap

The next codepoint from the input stream. This method reads as much bytes as needed by the encoding and returns the complete multibyte codepoint.

Specified by:

getNextEncoded in class CMap

Parameters:

is - The input stream with encoded data.

Returns:

The next codepoint from the input stream.

Throws:

IOException

putNextDecoded

public void putNextDecoded(OutputStream os,
                           int character)
                    throws IOException

Description copied from class: CMap

Put the next character onto the input stream after encoding. This method writes as much bytes as needed by the encoding.

Specified by:

putNextDecoded in class CMap

Parameters:

os - The stream to write the bytes.

character - The character to be encoded.

Throws:

IOException

putNextEncoded

public void putNextEncoded(OutputStream os,
                           int codepoint)
                    throws IOException

Description copied from class: CMap

Put the next codepoint onto the input stream. This method writes as much bytes as needed by the encoding.

Specified by:

putNextEncoded in class CMap

Parameters:

os - The stream to write the bytes.

codepoint - The codepoint.

Throws:

IOException