Package jminusminus

Class CharReader

java.lang.Object

jminusminus.CharReader

class CharReader
extends Object

A buffered character reader, which abstracts out differences between platforms, mapping all new lines to '\n', and also keeps track of line numbers.

Field Summary

Fields

Modifier and Type	Field	Description
static final char	EOFCH

Constructor Summary

Constructors

Constructor	Description
CharReader(String fileName)	Constructs a CharReader from a file name.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the file.
String	fileName()	Returns the file name.
int	line()	Returns the current line number in the source file.
char	nextChar()	Scans and returns the next character.

Methods inherited from class java.lang.Object

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

Field Details

EOFCH

public static final char EOFCH

See Also:

• Constant Field Values

Constructor Details

CharReader

public CharReader(String fileName)
           throws FileNotFoundException

Constructs a CharReader from a file name.

Parameters:

fileName - the name of the input file.

Throws:

FileNotFoundException - if the file is not found.

Method Details

nextChar

public char nextChar()
              throws IOException

Scans and returns the next character.

Returns:

the character scanned.

Throws:

IOException - if an I/O error occurs.

line

public int line()

Returns the current line number in the source file.

Returns:

the current line number in the source file.

fileName

public String fileName()

Returns the file name.

Returns:

the file name.

close

public void close()
           throws IOException

Closes the file.

Throws:

IOException - if an I/O error occurs.