Package org.apache.commons.imaging.formats.xpm

Class XpmImageParser

java.lang.Object

org.apache.commons.imaging.common.BinaryFileParser

org.apache.commons.imaging.AbstractImageParser<XpmImagingParameters>

org.apache.commons.imaging.formats.xpm.XpmImageParser

public class XpmImageParser
extends AbstractImageParser<XpmImagingParameters>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	XpmImageParser.PaletteEntry
private static class	XpmImageParser.XpmHeader
private static class	XpmImageParser.XpmParseResult

Field Summary

Fields

Modifier and Type	Field	Description
private static java.lang.String[]	ACCEPTED_EXTENSIONS
private static java.util.Map<java.lang.String,java.lang.Integer>	colorNames
private static java.lang.String	DEFAULT_EXTENSION
private static char[]	WRITE_PALETTE

Constructor Summary

Constructors

Constructor	Description
XpmImageParser()	Constructs a new instance with the big-endian byte order.

Method Summary

Modifier and Type	Method	Description
boolean	dumpImageFile(java.io.PrintWriter pw, ByteSource byteSource)	Writes the ImageInfo and format-specific information for the image content of the specified byte source to a PrintWriter
protected java.lang.String[]	getAcceptedExtensions()	Gets an array of all accepted extensions
protected ImageFormat[]	getAcceptedTypes()	Gets an array of ImageFormat objects describing all accepted types
java.awt.image.BufferedImage	getBufferedImage(ByteSource byteSource, XpmImagingParameters params)	Gets a buffered image specified by the byte source (for sources that specify multiple images, choice of which image is returned is implementation dependent).
java.lang.String	getDefaultExtension()	Gets the default extension for the format specified by an implementation of ImageParser.
XpmImagingParameters	getDefaultParameters()	Gets a default parameters instance for this parser.
byte[]	getIccProfileBytes(ByteSource byteSource, XpmImagingParameters params)	Gets an array of bytes describing the International Color Consortium (ICC) specification for the color space of the image contained in the input byteSource.
ImageInfo	getImageInfo(ByteSource byteSource, XpmImagingParameters params)	Gets image information from the specified ByteSource.
java.awt.Dimension	getImageSize(ByteSource byteSource, XpmImagingParameters params)	Gets the size of the image described by the specified ByteSource.
ImageMetadata	getMetadata(ByteSource byteSource, XpmImagingParameters params)	Gets image metadata from the specified byte source.
java.lang.String	getName()	Gets a descriptive name for the implementation of an ImageParser.
private static void	loadColorNames()
private int	parseColor(java.lang.String color)
private boolean	parseNextString(BasicCParser cParser, java.lang.StringBuilder stringBuilder)
private void	parsePaletteEntries(XpmImageParser.XpmHeader xpmHeader, BasicCParser cParser)
private XpmImageParser.XpmParseResult	parseXpmHeader(ByteSource byteSource)
private XpmImageParser.XpmHeader	parseXpmHeader(BasicCParser cParser)
private XpmImageParser.XpmHeader	parseXpmValuesSection(java.lang.String row)
private java.lang.String	pixelsForIndex(int index, int charsPerPixel)
private void	populatePaletteEntry(XpmImageParser.PaletteEntry paletteEntry, java.lang.String key, java.lang.String color)
private java.lang.String	randomName()
private XpmImageParser.XpmHeader	readXpmHeader(ByteSource byteSource)
private java.awt.image.BufferedImage	readXpmImage(XpmImageParser.XpmHeader xpmHeader, BasicCParser cParser)
private java.lang.String	toColor(int color)
void	writeImage(java.awt.image.BufferedImage src, java.io.OutputStream os, XpmImagingParameters params)	Writes the content of a BufferedImage to the specified output stream.

Methods inherited from class org.apache.commons.imaging.AbstractImageParser

canAcceptExtension, canAcceptExtension, canAcceptType, dumpImageFile, dumpImageFile, dumpImageFile, getAllBufferedImages, getAllBufferedImages, getAllBufferedImages, getAllImageParsers, getBufferedImage, getBufferedImage, getBufferedImageFactory, getFormatCompliance, getFormatCompliance, getFormatCompliance, getIccProfileBytes, getIccProfileBytes, getIccProfileBytes, getIccProfileBytes, getImageInfo, getImageInfo, getImageInfo, getImageSize, getImageSize, getImageSize, getImageSize, getMetadata, getMetadata, getMetadata, getMetadata, getMetadata

Methods inherited from class org.apache.commons.imaging.common.BinaryFileParser

debugNumber, debugNumber, getByteOrder, setByteOrder

Methods inherited from class java.lang.Object

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

Field Detail

ACCEPTED_EXTENSIONS

private static final java.lang.String[] ACCEPTED_EXTENSIONS

colorNames

private static java.util.Map<java.lang.String,java.lang.Integer> colorNames

DEFAULT_EXTENSION

private static final java.lang.String DEFAULT_EXTENSION

WRITE_PALETTE

private static final char[] WRITE_PALETTE

Constructor Detail

XpmImageParser

public XpmImageParser()

Constructs a new instance with the big-endian byte order.

Method Detail

loadColorNames

private static void loadColorNames()
                            throws ImagingException

Throws:

ImagingException

dumpImageFile

public boolean dumpImageFile(java.io.PrintWriter pw,
                             ByteSource byteSource)
                      throws ImagingException,
                             java.io.IOException

Description copied from class: AbstractImageParser

Writes the ImageInfo and format-specific information for the image content of the specified byte source to a PrintWriter

Overrides:

dumpImageFile in class AbstractImageParser<XpmImagingParameters>

Parameters:

pw - print writer used for writing the ImageInfo

byteSource - A valid byte source.

Returns:

A valid PrintWriter.

Throws:

ImagingException - In the event that the specified content does not conform to the format of the specific parser implementation.

java.io.IOException - In the event of unsuccessful read or access operation.

getAcceptedExtensions

protected java.lang.String[] getAcceptedExtensions()

Description copied from class: AbstractImageParser

Gets an array of all accepted extensions

Specified by:

getAcceptedExtensions in class AbstractImageParser<XpmImagingParameters>

Returns:

A valid array of one or more elements.

getAcceptedTypes

protected ImageFormat[] getAcceptedTypes()

Description copied from class: AbstractImageParser

Gets an array of ImageFormat objects describing all accepted types

Specified by:

getAcceptedTypes in class AbstractImageParser<XpmImagingParameters>

Returns:

A valid array of one or more elements.

getBufferedImage

public final java.awt.image.BufferedImage getBufferedImage(ByteSource byteSource,
                                                           XpmImagingParameters params)
                                                    throws ImagingException,
                                                           java.io.IOException

Description copied from class: AbstractImageParser

Gets a buffered image specified by the byte source (for sources that specify multiple images, choice of which image is returned is implementation dependent).

Specified by:

getBufferedImage in class AbstractImageParser<XpmImagingParameters>

Parameters:

byteSource - A valid instance of ByteSource

params - Optional instructions for special-handling or interpretation of the input data (null objects are permitted and must be supported by implementations).

Returns:

A valid instance of BufferedImage.

Throws:

ImagingException - In the event that the specified content does not conform to the format of the specific parser implementation.

java.io.IOException - In the event of unsuccessful read or access operation.

getDefaultExtension

public java.lang.String getDefaultExtension()

Description copied from class: AbstractImageParser

Gets the default extension for the format specified by an implementation of ImageParser. Some parsers can support more than one extension (i.e. .JPEG, .JPG; .TIF, .TIFF, etc.).

Specified by:

getDefaultExtension in class AbstractImageParser<XpmImagingParameters>

Returns:

A valid string.

getDefaultParameters

public XpmImagingParameters getDefaultParameters()

Description copied from class: AbstractImageParser

Gets a default parameters instance for this parser.

Specified by:

getDefaultParameters in class AbstractImageParser<XpmImagingParameters>

Returns:

default parameters instance

getIccProfileBytes

public byte[] getIccProfileBytes(ByteSource byteSource,
                                 XpmImagingParameters params)
                          throws ImagingException,
                                 java.io.IOException

Description copied from class: AbstractImageParser

Gets an array of bytes describing the International Color Consortium (ICC) specification for the color space of the image contained in the input byteSource. Not all formats support ICC profiles.

Specified by:

getIccProfileBytes in class AbstractImageParser<XpmImagingParameters>

Parameters:

byteSource - A valid ByteSource.

params - Optional instructions for special-handling or interpretation of the input data.

Returns:

If available, a valid array of bytes; otherwise, a null

Throws:

ImagingException - In the event that the specified content does not conform to the format of the specific parser implementation.

java.io.IOException - In the event of unsuccessful read or access operation.

getImageInfo

public ImageInfo getImageInfo(ByteSource byteSource,
                              XpmImagingParameters params)
                       throws ImagingException,
                              java.io.IOException

Description copied from class: AbstractImageParser

Gets image information from the specified ByteSource. Format-specific ImageParser implementations are expected to return a valid ImageInfo object or to throw an ImageReadException if unable to process the specified data.

The params argument provides a mechanism for individual implementations to pass optional information into the parser. Not all formats will require this capability. Because the base class may call this method with a null params argument, implementations should always include logic for ignoring null input.

Specified by:

getImageInfo in class AbstractImageParser<XpmImagingParameters>

Parameters:

byteSource - A valid ByteSource object

params - Optional instructions for special-handling or interpretation of the input data (null objects are permitted and must be supported by implementations).

Returns:

A valid image information object describing the content extracted from the specified data.

Throws:

ImagingException - In the event that the specified content does not conform to the format of the specific parser implementation.

java.io.IOException - In the event of unsuccessful data access operation.

getImageSize

public java.awt.Dimension getImageSize(ByteSource byteSource,
                                       XpmImagingParameters params)
                                throws ImagingException,
                                       java.io.IOException

Description copied from class: AbstractImageParser

Gets the size of the image described by the specified ByteSource.

Specified by:

getImageSize in class AbstractImageParser<XpmImagingParameters>

Parameters:

byteSource - A valid reference to a ByteSource.

params - Optional instructions for special-handling or interpretation of the input data.

Returns:

A valid instance of Dimension.

Throws:

ImagingException - In the event that the specified content does not conform to the format of the specific parser implementation.

java.io.IOException - In the event of unsuccessful read or access operation.

getMetadata

public ImageMetadata getMetadata(ByteSource byteSource,
                                 XpmImagingParameters params)
                          throws ImagingException,
                                 java.io.IOException

Description copied from class: AbstractImageParser

Gets image metadata from the specified byte source. Format-specific ImageParser implementations are expected to return a valid IImageMetadata object or to throw an ImageReadException if unable to process the specified byte source.

The params argument provides a mechanism for individual implementations to pass optional information into the parser. Not all formats will require this capability. Because the base class may call this method with a null params argument, implementations should always include logic for ignoring null input.

Specified by:

getMetadata in class AbstractImageParser<XpmImagingParameters>

Parameters:

byteSource - A valid byte source.

params - Optional instructions for special-handling or interpretation of the input data (null objects are permitted and must be supported by implementations).

Returns:

A valid, potentially subject-matter-specific implementation of the IImageMetadata interface describing the content extracted from the source content.

Throws:

ImagingException - In the event that the ByteSource content does not conform to the format of the specific parser implementation.

java.io.IOException - In the event of unsuccessful data read operation.

getName

public java.lang.String getName()

Description copied from class: AbstractImageParser

Gets a descriptive name for the implementation of an ImageParser.

Specified by:

getName in class AbstractImageParser<XpmImagingParameters>

Returns:

a valid, subject-matter-specific string.

parseColor

private int parseColor(java.lang.String color)
                throws ImagingException

Throws:

ImagingException

parseNextString

private boolean parseNextString(BasicCParser cParser,
                                java.lang.StringBuilder stringBuilder)
                         throws java.io.IOException,
                                ImagingException

Throws:

java.io.IOException

ImagingException

parsePaletteEntries

private void parsePaletteEntries(XpmImageParser.XpmHeader xpmHeader,
                                 BasicCParser cParser)
                          throws java.io.IOException,
                                 ImagingException

Throws:

java.io.IOException

ImagingException

parseXpmHeader

private XpmImageParser.XpmHeader parseXpmHeader(BasicCParser cParser)
                                         throws ImagingException,
                                                java.io.IOException

Throws:

ImagingException

java.io.IOException

parseXpmHeader

private XpmImageParser.XpmParseResult parseXpmHeader(ByteSource byteSource)
                                              throws ImagingException,
                                                     java.io.IOException

Throws:

ImagingException

java.io.IOException

parseXpmValuesSection

private XpmImageParser.XpmHeader parseXpmValuesSection(java.lang.String row)
                                                throws ImagingException

Throws:

ImagingException

pixelsForIndex

private java.lang.String pixelsForIndex(int index,
                                        int charsPerPixel)

populatePaletteEntry

private void populatePaletteEntry(XpmImageParser.PaletteEntry paletteEntry,
                                  java.lang.String key,
                                  java.lang.String color)
                           throws ImagingException

Throws:

ImagingException

randomName

private java.lang.String randomName()

readXpmHeader

private XpmImageParser.XpmHeader readXpmHeader(ByteSource byteSource)
                                        throws ImagingException,
                                               java.io.IOException

Throws:

ImagingException

java.io.IOException

readXpmImage

private java.awt.image.BufferedImage readXpmImage(XpmImageParser.XpmHeader xpmHeader,
                                                  BasicCParser cParser)
                                           throws ImagingException,
                                                  java.io.IOException

Throws:

ImagingException

java.io.IOException

toColor

private java.lang.String toColor(int color)

writeImage

public void writeImage(java.awt.image.BufferedImage src,
                       java.io.OutputStream os,
                       XpmImagingParameters params)
                throws ImagingException,
                       java.io.IOException

Description copied from class: AbstractImageParser

Writes the content of a BufferedImage to the specified output stream.

The params argument provides a mechanism for individual implementations to pass optional information into the parser. Not all formats will support this capability. Currently, some of the parsers do not check for null arguments.

Overrides:

writeImage in class AbstractImageParser<XpmImagingParameters>

Parameters:

src - An image giving the source content for output

os - A valid output stream for storing the formatted image

params - optional parameters, defining format-specific instructions for output (such as selections for data compression, color models, etc.)

Throws:

ImagingException - In the event that the output format cannot handle the input image or invalid params are specified.

java.io.IOException - In the event of an write error from the output stream.