org.terrier.utility

Class StringTools

java.lang.Object

org.terrier.utility.StringTools

public class StringTools
extends Object

This class implements useful string functions

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StringTools.ESCAPE Defines escape encodings that are supported.

Constructor Summary

Constructors

Constructor and Description
StringTools()

Method Summary

Modifier and Type	Method and Description
static String	escape(StringTools.ESCAPE e, String s) Escape a String according to the defined escape sequence requested
static String	normaliseEncoding(String encodingName) Normalises several common encodings found, for instance in HTTP or HTML headers, into the compatible Java encoding
static String	toLowerCase(String value) Rewrote the toLowercase method to improve performances.
static String	toUpperCase(String value)
static String	unescape(StringTools.ESCAPE e, String s) Unescape a String according to the defined escape sequence requested
static int	utf8_length(String s) Returns how long String s is in bytes, if encoded in UTF-8

Methods inherited from class java.lang.Object

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

Constructor Detail

StringTools

public StringTools()

Method Detail

escape

public static String escape(StringTools.ESCAPE e,
                            String s)

Escape a String according to the defined escape sequence requested

unescape

public static String unescape(StringTools.ESCAPE e,
                              String s)

Unescape a String according to the defined escape sequence requested

utf8_length

public static int utf8_length(String s)

Returns how long String s is in bytes, if encoded in UTF-8

Parameters:

s - The string to be measured.

Returns:

The number of bytes s is when encoded in UTF-8

normaliseEncoding

public static String normaliseEncoding(String encodingName)

Normalises several common encodings found, for instance in HTTP or HTML headers, into the compatible Java encoding

toLowerCase

public static final String toLowerCase(String value)

Rewrote the toLowercase method to improve performances. In Ldap, attributesType are supposed to use ASCII chars : 'a'-'z', 'A'-'Z', '0'-'9', '.' and '-' only.

Parameters:

value - The String to lowercase

Returns:

The lowercase string

toUpperCase

public static final String toUpperCase(String value)