Package edu.tufts.hrilab.util

Class Util

java.lang.Object

edu.tufts.hrilab.util.Util

public class Util
extends Object

Constructor Summary

Constructors

Constructor	Description
Util()

Method Summary

Modifier and Type	Method	Description
static int	calcBracketBalance(String str, int bal)
static int	calcParenBalance(String str, int bal)
static int	calcQuoteBalance(String str, int bal)
static boolean	checkNextArg(String[] args, int i)	Check whether next arg is another parameter (i.e., starts with '-').
static boolean	containsIgnoreCase(Collection<String> searchIn, String searchFor)	searches through a collection (ArrayList, HashSet, etc) and determines if the collection contains a particular searchFor string, IGNORING case.
static double	getDistanceFrom(double x1, double y1, double x2, double y2)
static double	getHeadingFrom(double x1, double y1, double x2, double y2)
static double	getHeadingFromRel(double x1, double y1, double x2, double y2, double h)
static <T> T	getIgnoreCase(Set<Map.Entry<String,T>> entrySet, String searchForKey)	searches through a Map<String, Object> (can be a hashmap, treemap, etc) and returns the value associated with the key, IGNORING case.
static boolean	isNumeric(Object value)	Checks if value's toString is an integer, long, float, or double.
static String	join(Iterable<? extends Object> objectCollection, String separator)	method for joining objects (more properly, their .toString()) with a specific deliminator to produce a string of the form "a, b, c".
static double	lldist(double x1, double y1, double x2, double y2)	Longitude-latitude distance.
static String	numbersTextToDigits(String in)	Converts text numbers into digits.
static int	signedInt(byte b1, byte b2)
static void	Sleep(long millis)	Sleep.
static List<String>	tokenizeArgs(String s)	Overloaded version of tokenizeArgs, using default ',' delimiter
static List<String>	tokenizeArgs(String s, char delim)	Brad: trying out this implementation vs previous one to see what happens
static List<String>	tokenizeArgsHelper(String s, List<String> results, int parenDepth, int singleQuoteDepth, int bracketDepth, int doubleQuotesOpen, boolean first)
static int	unsignedInt(byte b1, byte b2)
static int	unsignedInt(byte b1, byte b2, byte b3)
static long	unsignedInt(byte b1, byte b2, byte b3, byte b4)

Methods inherited from class java.lang.Object

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

Constructor Details

Util

public Util()

Method Details

getHeadingFrom

public static double getHeadingFrom(double x1,
 double y1,
 double x2,
 double y2)

getHeadingFromRel

public static double getHeadingFromRel(double x1,
 double y1,
 double x2,
 double y2,
 double h)

getDistanceFrom

public static double getDistanceFrom(double x1,
 double y1,
 double x2,
 double y2)

lldist

public static double lldist(double x1,
 double y1,
 double x2,
 double y2)

Longitude-latitude distance. This is needed for pos servers that return the pose in longitude-latitude form instead of x,y meters (e.g., Cart). See http://en.wikipedia.org/wiki/Great-circle_distance.

Parameters:

x1 - starting longitude

y1 - starting latitude

x2 - ending longitude

y2 - ending latitude

Returns:

distance between the two locations

Sleep

public static void Sleep(long millis)

Sleep. This is a convenience method to obviate the need to catch the InterruptedException any time you want to sleep.

Parameters:

millis - the sleep duration

calcParenBalance

public static int calcParenBalance(String str,
 int bal)

calcBracketBalance

public static int calcBracketBalance(String str,
 int bal)

calcQuoteBalance

public static int calcQuoteBalance(String str,
 int bal)

tokenizeArgs

public static List<String> tokenizeArgs(String s,
 char delim)

Brad: trying out this implementation vs previous one to see what happens

Parameters:

s - string to be tokenized

delim - delimiter

Returns:

tokens

tokenizeArgsHelper

public static List<String> tokenizeArgsHelper(String s,
 List<String> results,
 int parenDepth,
 int singleQuoteDepth,
 int bracketDepth,
 int doubleQuotesOpen,
 boolean first)

tokenizeArgs

public static List<String> tokenizeArgs(String s)

Overloaded version of tokenizeArgs, using default ',' delimiter

Parameters:

s - string to be tokenized

Returns:

tokens

isNumeric

public static boolean isNumeric(Object value)

Checks if value's toString is an integer, long, float, or double.

Parameters:

value -

Returns:

numbersTextToDigits

public static String numbersTextToDigits(String in)

Converts text numbers into digits.

checkNextArg

public static boolean checkNextArg(String[] args,
 int i)

Check whether next arg is another parameter (i.e., starts with '-').

Returns:

true if it's a parameter

signedInt

public static int signedInt(byte b1,
 byte b2)

unsignedInt

public static int unsignedInt(byte b1,
 byte b2)

unsignedInt

public static int unsignedInt(byte b1,
 byte b2,
 byte b3)

unsignedInt

public static long unsignedInt(byte b1,
 byte b2,
 byte b3,
 byte b4)

join

public static String join(Iterable<? extends Object> objectCollection,
 String separator)

method for joining objects (more properly, their .toString()) with a specific deliminator to produce a string of the form "a, b, c". based on http://snippets.dzone.com/posts/show/91

containsIgnoreCase

public static boolean containsIgnoreCase(Collection<String> searchIn,
 String searchFor)

searches through a collection (ArrayList, HashSet, etc) and determines if the collection contains a particular searchFor string, IGNORING case.

getIgnoreCase

public static <T> T getIgnoreCase(Set<Map.Entry<String,T>> entrySet,
 String searchForKey)

searches through a Map<String, Object> (can be a hashmap, treemap, etc) and returns the value associated with the key, IGNORING case. If not key matched, returns null.