edu.harvard.hul.ois.jhove.module

Class Utf8Module

java.lang.Object

ModuleBase

edu.harvard.hul.ois.jhove.module.Utf8Module

public class Utf8Module
extends ModuleBase

Module for analysis of content as a UTF-8 stream.

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<Integer,String>	_controlCharMap
protected ChecksumInputStream	_cstream PRIVATE INSTANCE FIELDS.
protected DataInputStream	_dstream
protected boolean	_lineEndCR
protected boolean	_lineEndCRLF
protected boolean	_lineEndLF
protected int	_prevChar
protected TextMDMetadata	_textMD
protected boolean	_withTextMD
protected Utf8BlockMarker	blockMarker
protected int[]	initialBytes

Constructor Summary

Constructors

Constructor and Description
Utf8Module() Creates a Utf8Module.

Method Summary

Modifier and Type	Method and Description
protected void	checkLineEnd(int ch) Accumulate information about line endings.
protected boolean	checkMark(int byt, RepInfo info)
void	checkSignatures(File file, InputStream stream, RepInfo info) Check if the digital object conforms to this Module's internal signature information.
int	parse(InputStream stream, RepInfo info, int parseIndex) Parse the content of a stream digital object and store the results in RepInfo.

Methods inherited from class java.lang.Object

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

Field Detail

_cstream

protected ChecksumInputStream _cstream

PRIVATE INSTANCE FIELDS.

_dstream

protected DataInputStream _dstream

_lineEndCR

protected boolean _lineEndCR

_lineEndLF

protected boolean _lineEndLF

_lineEndCRLF

protected boolean _lineEndCRLF

_prevChar

protected int _prevChar

_controlCharMap

protected Map<Integer,String> _controlCharMap

initialBytes

protected int[] initialBytes

blockMarker

protected Utf8BlockMarker blockMarker

_withTextMD

protected boolean _withTextMD

_textMD

protected TextMDMetadata _textMD

Constructor Detail

Utf8Module

public Utf8Module()

Creates a Utf8Module.

Method Detail

parse

public final int parse(InputStream stream,
                       RepInfo info,
                       int parseIndex)
                throws IOException

Parse the content of a stream digital object and store the results in RepInfo.

Parameters:

stream - An InputStream, positioned at its beginning, which is generated from the object to be parsed. If multiple calls to parse are made on the basis of a nonzero value being returned, a new InputStream must be provided each time.

info - A fresh (on the first call) RepInfo object which will be modified to reflect the results of the parsing If multiple calls to parse are made on the basis of a nonzero value being returned, the same RepInfo object should be passed with each call.

parseIndex - Must be 0 in first call to parse. If parse returns a nonzero value, it must be called again with parseIndex equal to that return value.

Throws:

IOException

checkSignatures

public void checkSignatures(File file,
                            InputStream stream,
                            RepInfo info)
                     throws IOException

Check if the digital object conforms to this Module's internal signature information. Try to read the BOM if it's present, and check the beginning of the file.

Parameters:

file - A File object for the object being parsed

stream - An InputStream, positioned at its beginning, which is generated from the object to be parsed

info - A fresh RepInfo object which will be modified to reflect the results of the test

Throws:

IOException

checkLineEnd

protected void checkLineEnd(int ch)

Accumulate information about line endings.

Parameters:

ch - Current character

checkMark

protected boolean checkMark(int byt,
                            RepInfo info)