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edu.stanford.genetics.treeview.model
Class FlatFileStreamTokenizer  

java.lang.Object
  java.io.StreamTokenizer
      edu.stanford.genetics.treeview.model.FlatFileStreamTokenizer

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public class FlatFileStreamTokenizer

extends java.io.StreamTokenizer

implements the "lexical structure" of flat files basically, calling nextToken returns a series of words, nulls and newlines, and finally an EOF. Note that numbers are not parsed by the tokenizer. Also, there is no enforcement of the correct number of tokens per line. it will, however, filter out blank lines.

Version:

$Revision: 1.1 $ $Date: 2003/09/23 17:43:47 $

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Field Summary
private  boolean	lastSep
private  int	lines
static boolean	printTokens           Constant used for debugging
private  boolean	pushedEOL
private  int	saved
private  char	sep
static int	TT_NULL           Constant signifying a null token

 

Fields inherited from class java.io.StreamTokenizer

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

 

Constructor Summary

FlatFileStreamTokenizer(java.io.Reader reader)           Constructor for the FlatFileStreamTokenizer object.

FlatFileStreamTokenizer(java.io.Reader reader, char ch)           Constructor for the FlatFileStreamTokenizer object

 

Method Summary
int	lineno()           This method returns the current line number.
int	lines()
static void	main(java.lang.String[] astring)
int	nextToken()           Returns next token.
void	printToken()           prints current token to System.out
void	pushBack()           Pushes back current token to be read again.
void	setSeparator(char ch)           Sets the separator attribute of the FlatFileStreamTokenizer object
java.lang.String	toString()           This method returns the current token value as a String in the form "Token[x], line n", where 'n' is the current line numbers and 'x' is determined as follows.

 

Methods inherited from class java.io.StreamTokenizer

commentChar, eolIsSignificant, lowerCaseMode, ordinaryChar, ordinaryChars, parseNumbers, quoteChar, resetSyntax, slashSlashComments, slashStarComments, whitespaceChars, wordChars

 

Methods inherited from class java.lang.Object

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

 

Field Detail

lines

private int lines

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sep

private char sep

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lastSep

private boolean lastSep

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pushedEOL

private boolean pushedEOL

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TT_NULL

public static final int TT_NULL

Constant signifying a null token

See Also:

Constant Field Values

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printTokens

public static boolean printTokens

Constant used for debugging

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saved

private int saved

Constructor Detail

FlatFileStreamTokenizer

public FlatFileStreamTokenizer(java.io.Reader reader,
                               char ch)

Constructor for the FlatFileStreamTokenizer object

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FlatFileStreamTokenizer

public FlatFileStreamTokenizer(java.io.Reader reader)

Constructor for the FlatFileStreamTokenizer object. Defaults to tab-delimitted.

Method Detail

main

public static void main(java.lang.String[] astring)

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setSeparator

public void setSeparator(char ch)

Sets the separator attribute of the FlatFileStreamTokenizer object

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toString

public java.lang.String toString()

Description copied from class: java.io.StreamTokenizer

This method returns the current token value as a String in the form "Token[x], line n", where 'n' is the current line numbers and 'x' is determined as follows.

• If no token has been read, then 'x' is "NOTHING" and 'n' is 0
• If ttype is TT_EOF, then 'x' is "EOF"
• If ttype is TT_EOL, then 'x' is "EOL"
• If ttype is TT_WORD, then 'x' is sval
• If ttype is TT_NUMBER, then 'x' is "n=strnval" where 'strnval' is String.valueOf(nval).
• If ttype is a quote character, then 'x' is sval
• For all other cases, 'x' is ttype

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printToken

public void printToken()

prints current token to System.out

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nextToken

public int nextToken()
              throws java.io.IOException

Returns next token. Multiple separators generate null tokens. So do ones at ends of lines.

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pushBack

public void pushBack()

Pushes back current token to be read again.

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lineno

public int lineno()

Description copied from class: java.io.StreamTokenizer

This method returns the current line number. Note that if the pushBack() method is called, it has no effect on the line number returned by this method.

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lines

public int lines()

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