org.supercsv.io

Interface ITokenizer

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

AbstractTokenizer, Tokenizer

public interface ITokenizer
extends Closeable

The interface for tokenizers, which are responsible for reading the CSV file, line by line.

Author:

Kasper B. Graversen, James Bassett

Method Summary

Modifier and Type	Method and Description
int	getLineNumber() Gets the line number currently being tokenized (the first line is line 1).
String	getUntokenizedRow() Returns the raw (untokenized) CSV row that was just read (which can potentially span multiple lines in the file).
boolean	readColumns(List<String> columns) Reads a CSV row into the supplied List of columns (which can potentially span multiple lines in the file).

Methods inherited from interface java.io.Closeable

close

Method Detail

getLineNumber

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 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

Returns:

the line number currently being tokenized

getUntokenizedRow

String getUntokenizedRow()

Returns the raw (untokenized) CSV row that was just read (which can potentially span multiple lines in the file).

Returns:

the raw (untokenized) CSV row that was just read

Since:

2.0.0

readColumns

boolean readColumns(List<String> columns)
             throws IOException

Reads a CSV row into the supplied List of columns (which can potentially span multiple lines in the file). The columns list is cleared as the first operation in the method. Any empty columns ("") will be added to the list as null.

Parameters:

columns - the List of columns to read into

Returns:

true if something was read, or false if EOF

Throws:

IOException - when an IOException occurs

NullPointerException - if columns is null

SuperCsvException - on errors in parsing the input

Since:

2.0.0 (was previously called readStringList)