org.cruxframework.crux.core.client.utils

Class StringUtils

java.lang.Object

org.cruxframework.crux.core.client.utils.StringUtils

public class StringUtils
extends Object

Author:

Gesse S. F. Dafe, Thiago da Rosa de Bustamante, Samuel Almeida Cardoso (samuel@cruxframework.org)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	StringUtils.Collator
static class	StringUtils.CollatorFFandIE
static class	StringUtils.CollatorSafari
static interface	StringUtils.StringFilter A String Filter that can be applied on join operations

Field Summary

Fields

Modifier and Type	Field and Description
static String	EMPTY
static String	SPACE

Constructor Summary

Constructors

Constructor and Description
StringUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static int	charCodeAt(String str, int i)
static boolean	containsValue(String multiValuedProperty, String value)
static boolean	equals(String a, String b) This method generates a faster string comparison than String.equals() for web mode code.
static int	getLevenshteinDistance(String s, String t) Find the Levenshtein distance between two Strings.
static boolean	isEmpty(String value)
static boolean	isNumeric(String str) Check if the given string represents a number
static boolean	isWhitespace(char c)
static String	join(String[] parts, String join) Join all string parts into one string, using the join parameter between each string part
static String	join(String[] parts, String join, StringUtils.StringFilter filter)
static int	localeCompare(String source, String target)
static int	localeCompare(String source, String target, boolean caseSensitive)
static String	lpad(String src, int length, char padding)
static String	removeAccents(String value)
static String	replace(String text, String searchString, String replacement)
static String	replace(String text, String searchString, String replacement, int max)
static String	rpad(String src, int length, char padding)
static String	rTrim(String value)
static double	safeParseDouble(String value)
static String	toHEXString(String input) Convert a raw UTF-8 string to a hex string.
static String	toUpperCaseFirstChar(String text) Transforms "some text" into "Some text"
static String	toUTF8(String utf16String) Encode an UTF-16 string (Unicode) to UTF-8.
static boolean	unsafeEquals(String a, String b) This method generate a faster string comparison than String.equals() for web mode code.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

public static final String EMPTY

See Also:

Constant Field Values

SPACE

public static final String SPACE

See Also:

Constant Field Values

Constructor Detail

StringUtils

public StringUtils()

Method Detail

localeCompare

public static int localeCompare(String source,
                String target)

localeCompare

public static int localeCompare(String source,
                String target,
                boolean caseSensitive)

removeAccents

public static String removeAccents(String value)

lpad

public static String lpad(String src,
          int length,
          char padding)

Parameters:

src -

length -

padding -

Returns:

rpad

public static String rpad(String src,
          int length,
          char padding)

Parameters:

src -

length -

padding -

Returns:

isEmpty

public static boolean isEmpty(String value)

Parameters:

value -

Returns:

replace

public static String replace(String text,
             String searchString,
             String replacement)

Parameters:

text -

searchString -

replacement -

Returns:

replace

public static String replace(String text,
             String searchString,
             String replacement,
             int max)

Parameters:

text -

searchString -

replacement -

max -

Returns:

toUpperCaseFirstChar

public static String toUpperCaseFirstChar(String text)

Transforms "some text" into "Some text"

Parameters:

text -

Returns:

equals

public static boolean equals(String a,
             String b)

This method generates a faster string comparison than String.equals() for web mode code. The GWT generated String.equals() method makes a check in its parameter's type in runtime. That method makes that assertion on compilation time (once its parameters are both Strings).

Parameters:

a -

b -

Returns:

unsafeEquals

public static boolean unsafeEquals(String a,
                   String b)

This method generate a faster string comparison than String.equals() for web mode code. It is similar to StringUtils.equals() method. The only difference is that this one does not check for null parameters.

Parameters:

a -

b -

Returns:

safeParseDouble

public static double safeParseDouble(String value)

Parameters:

value -

Returns:

containsValue

public static boolean containsValue(String multiValuedProperty,
                    String value)

Parameters:

multiValuedProperty -

value -

Returns:

rTrim

public static String rTrim(String value)

isWhitespace

public static boolean isWhitespace(char c)

getLevenshteinDistance

public static int getLevenshteinDistance(String s,
                         String t)

Find the Levenshtein distance between two Strings.

 StringUtils.getLevenshteinDistance(null, *)             = IllegalArgumentException
 StringUtils.getLevenshteinDistance(*, null)             = IllegalArgumentException
 StringUtils.getLevenshteinDistance("","")               = 0
 StringUtils.getLevenshteinDistance("","a")              = 1
 StringUtils.getLevenshteinDistance("aaapppp", "")       = 7
 StringUtils.getLevenshteinDistance("frog", "fog")       = 1
 StringUtils.getLevenshteinDistance("fly", "ant")        = 3
 StringUtils.getLevenshteinDistance("elephant", "hippo") = 7
 StringUtils.getLevenshteinDistance("hippo", "elephant") = 7
 StringUtils.getLevenshteinDistance("hippo", "zzzzzzzz") = 8
 StringUtils.getLevenshteinDistance("hello", "hallo")    = 1
 

Parameters:

s - the first String, must not be null

t - the second String, must not be null

Returns:

result distance

Throws:

IllegalArgumentException - if either String input null

isNumeric

public static boolean isNumeric(String str)

Check if the given string represents a number

Parameters:

str -

Returns:

charCodeAt

public static int charCodeAt(String str,
             int i)

toUTF8

public static String toUTF8(String utf16String)

Encode an UTF-16 string (Unicode) to UTF-8. DOM Strings are UTF-16 by default

Parameters:

utf16String -

Returns:

utf-8 encoded string

toHEXString

public static String toHEXString(String input)

Convert a raw UTF-8 string to a hex string.

Parameters:

input -

Returns:

join

public static String join(String[] parts,
          String join)

Join all string parts into one string, using the join parameter between each string part

Parameters:

parts -

join -

Returns:

join

public static String join(String[] parts,
          String join,
          StringUtils.StringFilter filter)

Parameters:

parts -

join -

filter -

Returns: