com.logicaldoc.core.parser.wordperfect

Class WPStringExtractor

java.lang.Object

com.logicaldoc.core.parser.wordperfect.StringExtractor

com.logicaldoc.core.parser.wordperfect.WPStringExtractor

public class WPStringExtractor
extends StringExtractor

A StringExtractor extension optimized for processing WordPerfect document streams.

This class is made available as a utility class as other file formats may also use WordPerfect's file structure, e.g. Corel Presentations 3.0 files.

Field Summary

Fields inherited from class com.logicaldoc.core.parser.wordperfect.StringExtractor

COMMON_FONT_NAMES

Constructor Summary

Constructors

Constructor and Description
WPStringExtractor()

Method Summary

Methods

Modifier and Type	Method and Description
String	extract(InputStream stream) Wraps the specified InputStream in a WPFilterInputStream and passes it to the super class.
protected boolean	isStartLine(String lineLowerCase) Determines whether the supplied line indicates the start of the textual contents.
protected boolean	isTextCharacter(int charNumber) Checks whether the supplied character is a text character.
protected boolean	isValidLine(String lineLowerCase) Determines whether the supplied line should be included in the end result.

Methods inherited from class com.logicaldoc.core.parser.wordperfect.StringExtractor

isNormalWord, postProcessLine

Methods inherited from class java.lang.Object

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

Constructor Detail

WPStringExtractor

public WPStringExtractor()

Method Detail

extract

public String extract(InputStream stream)
               throws IOException

Wraps the specified InputStream in a WPFilterInputStream and passes it to the super class.

Overrides:

extract in class StringExtractor

Parameters:

stream - The InputStream to read the bytes from. The stream will be fully consumed but not closed.

Returns:

The resulting, heuristically determined text. A String is always returned, although it can be empty.

Throws:

IOException - When reading characters from the InputStream caused an IOException.

isTextCharacter

protected boolean isTextCharacter(int charNumber)

Description copied from class: StringExtractor

Checks whether the supplied character is a text character. By default, this method returns true for letters and single quotes.

Overrides:

isTextCharacter in class StringExtractor

isStartLine

protected boolean isStartLine(String lineLowerCase)

Description copied from class: StringExtractor

Determines whether the supplied line indicates the start of the textual contents. If 'true', all text extracted up to this point will be ignored, i.e. text extraction will start again from scratch but at the current location in the stream. The specified line is expected to be fully lowercased. This default implementation returns 'false'.

Overrides:

isStartLine in class StringExtractor

isValidLine

protected boolean isValidLine(String lineLowerCase)

Description copied from class: StringExtractor

Determines whether the supplied line should be included in the end result. The specified line is expected to be fully lowercased.

Overrides:

isValidLine in class StringExtractor