com.novell.nds.dirxml.util
Class StringUtil

java.lang.Object
  com.novell.nds.dirxml.util.StringUtil

public class StringUtil

extends Object

A class to hold various string processing utility functions

Constructor Summary

StringUtil()

Method Summary

static byte[]	decodeAsciiHex(String encodedData) Decode a string that represents binary data encoded in ASCII hex.
static String	encodeAsciiHex(byte[] data) Encode an array of bytes as an ASCII-hex string.
static boolean	endsWithIgnoreCase(String string1, String string2) Case insensitive version of startsWith
static boolean	equalIgnoreCase(char c1, char c2) Do a case insensitive comparison of characters for equality
static Comparator	getCaseIgnoreComparator()
static Comparator	getNumericStringComparator()
static String	GUIDToString(byte[] binaryGUID) Method to change from a binary GUID to canonical string representation.
static int	indexOfIgnoreCase(String string, char ch) Case insensitive version of indexOf
static int	indexOfIgnoreCase(String string, char ch, int fromIndex) Case insensitive version of indexOf
static int	indexOfIgnoreCase(String string1, String string2) Case insensitive version of indexOf
static int	indexOfIgnoreCase(String string1, String string2, int fromIndex) Case insensitive version of indexOf
static String	join(String[] strings, String delimiter) Join the elements of an array of Strings into a single string separated by a delimiter string.
static boolean	startsWithIgnoreCase(String string1, String string2) Case insensitive version of startsWith
static byte[]	stringToGUID(String stringGUID) Method to change from a binary GUID to canonical string representation.
static String	substring(String string, int start, int length) A different kind of substring the that provided by java.lang.String
static String	substringAfter(String string1, String string2) Get the substring that consists of the sequence characters in string1 that occur after the string2 in string1
static String	substringAfterIgnoreCase(String string1, String string2) Get the substring that consists of the sequence characters in string1 that occur after the string2 in string1 (ignoring case)
static String	substringBefore(String string1, String string2) Get the substring that consists of the sequence characters in string1 that occur before the string2 in string1
static String	substringBeforeIgnoreCase(String string1, String string2) Get the substring that consists of the sequence characters in string1 that occur before the string2 in string1 (ignoring case)
static String	toLowerCaseChars(String string) Convert all the characters in a string to lower case.
static String	toUpperCaseChars(String string) Convert all the characters in a string to upper case.

Methods inherited from class java.lang.Object

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

Constructor Detail

StringUtil

public StringUtil()

Method Detail

toUpperCaseChars

public static String toUpperCaseChars(String string)

Convert all the characters in a string to upper case. Note that this is different than String.toUpperCase() in that it uses Unicode rules to convert each character in a vacuum rather than using Locale specific rules that may consider context.

Parameters:

string - the string to convert

Returns:

the converted string

toLowerCaseChars

public static String toLowerCaseChars(String string)

Convert all the characters in a string to lower case. Note that this is different than String.toLowerCase() in that it uses Unicode rules to convert each character in a vacuum rather than using Locale specific rules that may consider context.

Parameters:

string - the string to convert

Returns:

the converted string

equalIgnoreCase

public static boolean equalIgnoreCase(char c1,
                                      char c2)

Do a case insensitive comparison of characters for equality

Parameters:

c1 - the first character

c2 - the second character

Returns:

true if the characters are equal ignoring case

indexOfIgnoreCase

public static int indexOfIgnoreCase(String string,
                                    char ch)

Case insensitive version of indexOf

Parameters:

string - a string.

ch - a character.

Returns:

the index of the first occurrence of the character in the string (ignoring case), or -1 if the character does not occur.

indexOfIgnoreCase

public static int indexOfIgnoreCase(String string,
                                    char ch,
                                    int fromIndex)

Case insensitive version of indexOf

Parameters:

string - a string.

ch - a character.

fromIndex - the index to start the search from.

Returns:

the index of the first occurrence of the character in the string (ignoring case) that is greater than or equal to fromIndex, or -1 if the character does not occur.

indexOfIgnoreCase

public static int indexOfIgnoreCase(String string1,
                                    String string2)

Case insensitive version of indexOf

Parameters:

string1 - a string.

string2 - a string.

Returns:

if the string2 argument occurs as a substring within the string object, then the index of the first character of the first such substring is returned; if it does not occur as a substring, -1 is returned.

indexOfIgnoreCase

public static int indexOfIgnoreCase(String string1,
                                    String string2,
                                    int fromIndex)

Case insensitive version of indexOf

Parameters:

string1 - a string.

string2 - a string.

fromIndex - the index from which to start the search.

Returns:

if the string2 argument occurs as a substring within the string object after the fromIndex, then the index of the first character of the first such substring is returned; if it does not occur as a substring, -1 is returned.

startsWithIgnoreCase

public static boolean startsWithIgnoreCase(String string1,
                                           String string2)

Case insensitive version of startsWith

Parameters:

string1 - a string.

string2 - a string.

Returns:

true if the string1 argument starts with the string2 argument (ignoring case)

endsWithIgnoreCase

public static boolean endsWithIgnoreCase(String string1,
                                         String string2)

Case insensitive version of startsWith

Parameters:

string1 - a string.

string2 - a string.

Returns:

true if the string1 argument starts with the string2 argument (ignoring case)

substring

public static String substring(String string,
                               int start,
                               int length)

A different kind of substring the that provided by java.lang.String

Parameters:

string - a string.

start - the starting index of the substring; if negative then it becomes string.length() + index; if still negative then 0 is used

length - the length of the string to get; if greater than what is available, only what is available is gotten if negative then it is length of string + 1 + length, or 0 whichever is greater

Returns:

the substring

substringBefore

public static String substringBefore(String string1,
                                     String string2)

Get the substring that consists of the sequence characters in string1 that occur before the string2 in string1

Parameters:

string1 - a string

string2 - a string

Returns:

a that consists of the sequence characters in string1 that occur before the string2 in string1, or the empty string if string2 does not occur in string1

substringBeforeIgnoreCase

public static String substringBeforeIgnoreCase(String string1,
                                               String string2)

Get the substring that consists of the sequence characters in string1 that occur before the string2 in string1 (ignoring case)

Parameters:

string1 - a string

string2 - a string

Returns:

a that consists of the sequence characters in string1 that occur before the string2 in string1(ignoring case), or the empty string if string2 does not occur in string1

substringAfter

public static String substringAfter(String string1,
                                    String string2)

Get the substring that consists of the sequence characters in string1 that occur after the string2 in string1

Parameters:

string1 - a string

string2 - a string

Returns:

a that consists of the sequence characters in string1 that occur after the string2 in string1, or the empty string if string2 does not occur in string1

substringAfterIgnoreCase

public static String substringAfterIgnoreCase(String string1,
                                              String string2)

Get the substring that consists of the sequence characters in string1 that occur after the string2 in string1 (ignoring case)

Parameters:

string1 - a string

string2 - a string

Returns:

a that consists of the sequence characters in string1 that occur after the string2 in string1(ignoring case), or the empty string if string2 does not occur in string1

getCaseIgnoreComparator

public static Comparator getCaseIgnoreComparator()

getNumericStringComparator

public static Comparator getNumericStringComparator()

GUIDToString

public static String GUIDToString(byte[] binaryGUID)

Method to change from a binary GUID to canonical string representation.

We do this so that the association value is more human-readable as it appears in the directory.

Parameters:

binaryGUID - The binary GUID

Returns:

The canonical string representation

stringToGUID

public static byte[] stringToGUID(String stringGUID)

Method to change from a binary GUID to canonical string representation.

We do this so that the association value is more human-readable as it appears in the directory.

Parameters:

stringGUID - The string GUID

Returns:

binary GUID

decodeAsciiHex

public static byte[] decodeAsciiHex(String encodedData)

Decode a string that represents binary data encoded in ASCII hex. This expects capital letters only.

Parameters:

encodedData - The encoded data string

Returns:

An array of bytes containing the decoded data

encodeAsciiHex

public static String encodeAsciiHex(byte[] data)

Encode an array of bytes as an ASCII-hex string. This encodes using capital letters only.

Parameters:

data - The data to be encoded.

Returns:

The encoded data string

join

public static String join(String[] strings,
                          String delimiter)

Join the elements of an array of Strings into a single string separated by a delimiter string.

Parameters:

strings - an array of strings

delimiter - the delimiter string

Returns:

the joined string