org.jimageanalyst.analyzer
Class AnalyzePnm

java.lang.Object
  org.jimageanalyst.AbstractImageAnalyzer
      org.jimageanalyst.analyzer.AnalyzePnm

All Implemented Interfaces:

ImageAnalyzer

public class AnalyzePnm
extends AbstractImageAnalyzer

Analyzer for PNM (PBM, PGM, PPM) images.

Version:

$LastChangedRevision: 2 $

Author:

Oliver J. Siegmar

Constructor Summary

AnalyzePnm()
Initialize this analyzer.

Method Summary

boolean	detectHeader(byte[] data) Detect the image type.
ImageInfo	getInfo(Configuration configuration, java.io.InputStream inputStream) Extracts the meta information for the given image.
java.lang.String	readLine(java.io.InputStream is) Reads a line (everything until a line-feed) from the given InputStream.
java.lang.String	readLine(java.io.InputStream is, java.lang.Appendable appendable) Reads a line (everything until a line-feed) from the given InputStream and write it to the specified appendable.

Methods inherited from class org.jimageanalyst.AbstractImageAnalyzer

getFormatNames, getHeaderBufSize, getMimeType, getStreamStartPosition

Methods inherited from class java.lang.Object

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

Constructor Detail

AnalyzePnm

public AnalyzePnm()

Initialize this analyzer.

Method Detail

detectHeader

public boolean detectHeader(byte[] data)

Detect the image type.

Parameters:

data - the image header data

Returns:

true if this analyzer is responsible for the given image header

getInfo

public ImageInfo getInfo(Configuration configuration,
                         java.io.InputStream inputStream)
                  throws java.io.IOException,
                         InvalidDataException

Extracts the meta information for the given image.

Parameters:

configuration - the configuration to be used

inputStream - the data source object

Returns:

the meta information for the given image.

Throws:

java.io.IOException - if an IO error occurs while reading data from the data source

InvalidDataException - if the image contains invalid data

readLine

public java.lang.String readLine(java.io.InputStream is)
                          throws java.io.IOException

Reads a line (everything until a line-feed) from the given InputStream.

Parameters:

is - the InputStream to read from

Returns:

a string build from all the characters before the first line-feed

Throws:

java.io.IOException - if an I/O error occurs

readLine

public java.lang.String readLine(java.io.InputStream is,
                                 java.lang.Appendable appendable)
                          throws java.io.IOException

Reads a line (everything until a line-feed) from the given InputStream and write it to the specified appendable.

Parameters:

is - the InputStream to read from

appendable - the appendable to append read data

Returns:

a string build from all the characters before the first line-feed

Throws:

java.io.IOException - if an I/O error occurs