org.mbari.siam.moos.utils.chart.graph
Class ScanWord

java.lang.Object
  java.io.StreamTokenizer
      org.mbari.siam.moos.utils.chart.graph.ScanWord

Direct Known Subclasses:

BuildGraph

public class ScanWord
extends java.io.StreamTokenizer

This class extends the StreamTokenizer class. It allows words to be defined and recognised and returned as a token. The TT_NUMBER token of the StreamTokenizer is also modified so that scientific notation is recognised.

Version:

$Revision: 1.1 $, $Date: 2008/11/04 22:17:55 $

Author:

Leigh Brookshaw

Field Summary

static int	ERROR Token returned when an error is encountered
static int	STRING Token returned when a string has been found.
static int	UNKNOWN Token returned when an unknown characters match nothing

Fields inherited from class java.io.StreamTokenizer

nval, sval, TT_EOF, TT_EOL, TT_NUMBER, TT_WORD, ttype

Constructor Summary

ScanWord(java.io.InputStream in)
Instantiate the class with the parsed input stream.

Method Summary

void	addKeyWord(java.lang.String s, int i) Add a keyword/token pair.
protected void	closeStream() Close the input stream
int	getKeyValue(java.lang.String s) return the matching token given the keyword
protected int	getNumber(java.lang.String s) Check to see if the returned word is a number The native StreamTokenizer number method does not work for scientific notation so we us the Double class doubleValue() method
int	nextWord() Read the input stream and return the next token found.
void	resetKeyWords() Clear the internal table containing the keyword/token pairs
protected void	resetWordSyntax() Reset the syntax of the parent class
void	setStringChar(char c) Set the character that delimeters a string.

Methods inherited from class java.io.StreamTokenizer

commentChar, eolIsSignificant, lineno, lowerCaseMode, nextToken, ordinaryChar, ordinaryChars, parseNumbers, pushBack, quoteChar, resetSyntax, slashSlashComments, slashStarComments, toString, whitespaceChars, wordChars

Methods inherited from class java.lang.Object

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

Field Detail

UNKNOWN

public static final int UNKNOWN

Token returned when an unknown characters match nothing

See Also:

Constant Field Values

ERROR

public static final int ERROR

Token returned when an error is encountered

See Also:

Constant Field Values

STRING

public static final int STRING

Token returned when a string has been found. A string is defined to be text between matching quotes " ".

See Also:

Constant Field Values

Constructor Detail

ScanWord

public ScanWord(java.io.InputStream in)

Instantiate the class with the parsed input stream.

Parameters:

in - Input stream to read from

Method Detail

addKeyWord

public void addKeyWord(java.lang.String s,
                       int i)

Add a keyword/token pair.

Parameters:

s - String contining the keyword

i - Token to return when the keyword is encountered.

getKeyValue

public int getKeyValue(java.lang.String s)

return the matching token given the keyword

Parameters:

s - Keyword.

resetKeyWords

public void resetKeyWords()

Clear the internal table containing the keyword/token pairs

nextWord

public int nextWord()

Read the input stream and return the next token found.

setStringChar

public void setStringChar(char c)

Set the character that delimeters a string.

Parameters:

c - character to delimeter strings. Default is ".

getNumber

protected int getNumber(java.lang.String s)

Check to see if the returned word is a number The native StreamTokenizer number method does not work for scientific notation so we us the Double class doubleValue() method

Parameters:

s - String to find number.

resetWordSyntax

protected void resetWordSyntax()

Reset the syntax of the parent class

closeStream

protected void closeStream()

Close the input stream