org.melati.poem.csv

Class CSVFileParser

java.lang.Object

org.melati.poem.csv.CSVFileParser

public class CSVFileParser
extends Object

A utility for tokenising a file made up of comma-separated variables. We allow for fields having returns in them.

   foo, bar om,,"baz, ,oof",xyz,   ->
     "foo", " bar om", "", "baz, , oof", "xyz", ""

   foo, "bar
   bar
   bar", baz ->
   "foo", "barbarbar", "baz"
 

Each record (which is usually a line, unless some fields have a line break in them) is accessed one at a time by calling nextRecord(). Within each record recordHasMoreFields() and nextField() can be used like an Enumeration to iterate through the fields.

Author:

mylesc, based heavily on orginal CSVStringEnumeration williamc

Constructor Summary

Constructors

Constructor and Description
CSVFileParser(BufferedReader reader) Constructor.

Method Summary

Modifier and Type	Method and Description
int	getLineNo() Return the line number.
static void	main(String[] args) Test harness.
String	nextField()
boolean	nextRecord()
boolean	recordHasMoreFields() Are there any more tokens to come?

Methods inherited from class java.lang.Object

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

Constructor Detail

CSVFileParser

public CSVFileParser(BufferedReader reader)

Constructor.

Parameters:

reader - file reader

Method Detail

nextRecord

public boolean nextRecord()
                   throws IOException

Returns:

whether there is another line

Throws:

IOException

getLineNo

public int getLineNo()

Return the line number.

Returns:

the current lineNo

recordHasMoreFields

public boolean recordHasMoreFields()

Are there any more tokens to come?

Returns:

whether there are more fields

nextField

public String nextField()
                 throws IOException

Returns:

the next token as a String

Throws:

IOException

main

public static void main(String[] args)
                 throws Exception

Test harness.

Parameters:

args - arguments

Throws:

Exception - if anything fails