Package org.apache.mina.proxy.utils

Class StringUtilities

java.lang.Object

org.apache.mina.proxy.utils.StringUtilities

public class StringUtilities
extends Object

StringUtilities.java - Various methods to handle strings.

Since:

MINA 2.0.0-M3

Author:

Apache MINA Project

Method Summary

Modifier and Type	Method	Description
static void	addValueToHeader(Map<String,List<String>> headers, String key, String value, boolean singleValued)	Adds an header to the provided map of headers.
static void	copyDirective(Map<String,String> directives, StringBuilder sb, String directive)	Copy the directive to the StringBuilder if not null.
static String	copyDirective(Map<String,String> src, Map<String,String> dst, String directive)	Copy the directive from the source map to the destination map, if it's value isn't null.
static String	getDirectiveValue(Map<String,String> directivesMap, String directive, boolean mandatory)	A directive is a parameter of the digest authentication process.
static String	getSingleValuedHeader(Map<String,List<String>> headers, String key)	Returns the value of the named header.
static boolean	isLws(byte b)	Is character a linear white space ? LWS = [CRLF] 1*( SP | HT ) Note that we're checking individual bytes instead of CRLF
static Map<String,String>	parseDirectives(byte[] buf)	Parses digest-challenge string, extracting each token and value(s).
static String	stringTo8859_1(String str)	Used to convert username-value, passwd or realm to 8859_1 encoding if all chars in string are within the 8859_1 (Latin 1) encoding range.

Methods inherited from class java.lang.Object

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

Method Detail

getDirectiveValue

public static String getDirectiveValue(Map<String,String> directivesMap,
                                       String directive,
                                       boolean mandatory)
                                throws AuthenticationException

A directive is a parameter of the digest authentication process. Returns the value of a directive from the map. If mandatory is true and the value is null, then it throws an AuthenticationException.

Parameters:

directivesMap - the directive's map

directive - the name of the directive we want to retrieve

mandatory - is the directive mandatory

Returns:

the mandatory value as a String

Throws:

AuthenticationException - if mandatory is true and if directivesMap.get(directive) == null

copyDirective

public static void copyDirective(Map<String,String> directives,
                                 StringBuilder sb,
                                 String directive)

Copy the directive to the StringBuilder if not null. (A directive is a parameter of the digest authentication process.)

Parameters:

directives - the directives map

sb - the output buffer

directive - the directive name to look for

copyDirective

public static String copyDirective(Map<String,String> src,
                                   Map<String,String> dst,
                                   String directive)

Copy the directive from the source map to the destination map, if it's value isn't null. (A directive is a parameter of the digest authentication process.)

Parameters:

src - the source map

dst - the destination map

directive - the directive name

Returns:

the value of the copied directive

parseDirectives

public static Map<String,String> parseDirectives(byte[] buf)
                                                throws SaslException

Parses digest-challenge string, extracting each token and value(s). Each token is a directive.

Parameters:

buf - A non-null digest-challenge string.

Returns:

A Map containing the aprsed directives

Throws:

SaslException - if the String cannot be parsed according to RFC 2831

isLws

public static boolean isLws(byte b)

Is character a linear white space ? LWS = [CRLF] 1*( SP | HT ) Note that we're checking individual bytes instead of CRLF

Parameters:

b - the byte to check

Returns:

true if it's a linear white space

stringTo8859_1

public static String stringTo8859_1(String str)
                             throws UnsupportedEncodingException

Used to convert username-value, passwd or realm to 8859_1 encoding if all chars in string are within the 8859_1 (Latin 1) encoding range.

Parameters:

str - a non-null String

Returns:

a non-null String containing the 8859_1 encoded string

Throws:

UnsupportedEncodingException - if we weren't able to decode using the ISO 8859_1 encoding

getSingleValuedHeader

public static String getSingleValuedHeader(Map<String,List<String>> headers,
                                           String key)

Returns the value of the named header. If it has multiple values then an IllegalArgumentException is thrown

Parameters:

headers - the http headers map

key - the key of the header

Returns:

the value of the http header

addValueToHeader

public static void addValueToHeader(Map<String,List<String>> headers,
                                    String key,
                                    String value,
                                    boolean singleValued)

Adds an header to the provided map of headers.

Parameters:

headers - the http headers map

key - the name of the new header to add

value - the value of the added header

singleValued - if true and the map already contains one value then it is replaced by the new value. Otherwise it simply adds a new value to this multi-valued header.