Package org.supercsv.io

Class AbstractTokenizer

java.lang.Object

org.supercsv.io.AbstractTokenizer

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, ITokenizer

Direct Known Subclasses:

Tokenizer

public abstract class AbstractTokenizer
extends java.lang.Object
implements ITokenizer

Defines the standard behaviour of a Tokenizer. Extend this class if you want the line-reading functionality of the default Tokenizer, but want to define your own implementation of ITokenizer.readColumns(List).

Since:

2.0.0

Field Summary

Fields

Modifier and Type	Field	Description
private java.io.LineNumberReader	lnr
private CsvPreference	preferences

Constructor Summary

Constructors

Constructor	Description
AbstractTokenizer(java.io.Reader reader, CsvPreference preferences)	Constructs a new AbstractTokenizer, which reads the CSV file, line by line.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the underlying reader.
int	getLineNumber()	Gets the line number currently being tokenized (the first line is line 1).
protected CsvPreference	getPreferences()	Gets the CSV preferences.
protected java.lang.String	readLine()	Reads a line of text.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.supercsv.io.ITokenizer

getUntokenizedRow, readColumns

Field Detail

preferences

private final CsvPreference preferences

lnr

private final java.io.LineNumberReader lnr

Constructor Detail

AbstractTokenizer

public AbstractTokenizer(java.io.Reader reader,
                         CsvPreference preferences)

Constructs a new AbstractTokenizer, which reads the CSV file, line by line.

Parameters:

reader - the reader

preferences - the CSV preferences

Throws:

java.lang.NullPointerException - if reader or preferences is null

Method Detail

close

public void close()
           throws java.io.IOException

Closes the underlying reader.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Throws:

java.io.IOException

getLineNumber

public int getLineNumber()

Gets the line number currently being tokenized (the first line is line 1). This number increments at every line terminator as the data is read, i.e. it will be

• 0, if ITokenizer.readColumns(List) hasn't been called yet
• 1, when the first line is being read/tokenized
• 2, when the second line is being read/tokenized

Specified by:

getLineNumber in interface ITokenizer

Returns:

the line number currently being tokenized

readLine

protected java.lang.String readLine()
                             throws java.io.IOException

Reads a line of text. Whenever a line terminator is read the current line number is incremented.

Returns:

A String containing the contents of the line, not including any line termination characters, or null if the end of the stream has been reached

Throws:

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

getPreferences

protected CsvPreference getPreferences()

Gets the CSV preferences.

Returns:

the preferences