edu.umass.cs.surveyman.input

Class AbstractLexer

java.lang.Object

edu.umass.cs.surveyman.input.AbstractLexer

Direct Known Subclasses:

CSVLexer

public abstract class AbstractLexer
extends Object

This class implements general lexing utility methods.

Field Summary

Fields

Modifier and Type	Field and Description
static String[]	falseValues Entries that convert to a boolean false.
protected static org.apache.logging.log4j.Logger	LOGGER
static HashMap<Character,Character>	quotMatches Recognized quotation marks.
static String[]	trueValues Entries that convert to a boolean true.
static HashMap<Character,String>	xmlChars XML/HTML conversion characters.

Constructor Summary

Constructors

Constructor and Description
AbstractLexer()

Method Summary

Methods

Modifier and Type	Method and Description
static String	htmlChars2XML(String s) Converts matched html strings to xml characters.
static void	init() Initializes xmlChars and quotMatches.
static boolean	isA(char possibleQuot) Utility class for quotation marks.
abstract Map	lex(Reader reader) Abstract lexing method.
static String	xmlChars2HTML(String s) Converts matched xml characters in s to html characters.

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

protected static final org.apache.logging.log4j.Logger LOGGER

trueValues

public static final String[] trueValues

Entries that convert to a boolean true.

falseValues

public static final String[] falseValues

Entries that convert to a boolean false.

xmlChars

public static HashMap<Character,String> xmlChars

XML/HTML conversion characters.

quotMatches

public static HashMap<Character,Character> quotMatches

Recognized quotation marks.

Constructor Detail

AbstractLexer

public AbstractLexer()

Method Detail

init

public static void init()

Initializes xmlChars and quotMatches.

isA

public static boolean isA(char possibleQuot)

Utility class for quotation marks.

Parameters:

possibleQuot - Character that might be a quotation mark.

Returns:

Boolean indicating whether the input character is a quotation mark.

xmlChars2HTML

public static String xmlChars2HTML(String s)

Converts matched xml characters in s to html characters.

Parameters:

s - Input string containing XML characters.

Returns:

The converted string.

htmlChars2XML

public static String htmlChars2XML(String s)

Converts matched html strings to xml characters.

Parameters:

s - Input string containing HTML characters.

Returns:

The converted string.

lex

public abstract Map lex(Reader reader)
                 throws Exception

Abstract lexing method.

Parameters:

reader - The source reader, containing the data to be lexed.

Returns:

A Map from column names to entries.

Throws:

Exception