ucar.nc2.ogc.erddap.util

Class ErddapString2

java.lang.Object

ucar.nc2.ogc.erddap.util.ErddapString2

public class ErddapString2
extends java.lang.Object

A class with static String methods that add to native String methods. All are static methods.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ERROR ERROR is a constant so that it will be consistent, so that one can search for it in output files.

Constructor Summary

Constructors

Constructor and Description
ErddapString2()

Method Summary

Modifier and Type	Method and Description
static int	indexOf(char[] cArray, char c, int fromIndex) Finds the first instance of c at or after fromIndex (0..
static boolean	isDigit(int c) 0..9.
static boolean	isLetter(int c) This includes hiASCII/ISO Latin 1/ISO 8859-1, but not extensive unicode characters.
static double	parseDouble(java.lang.String s) Convert a string to a double.
static int	parseInt(java.lang.String s) Convert a string to an int.
static long	parseLong(java.lang.String s) This converts String representation of a long.
static java.lang.String	replaceAll(java.lang.String s, char oldCh, char newCh) Returns a string where all occurences of oldCh have been replaced with newCh.
static int[]	toRational(double d) This converts a double to a rational number (m * 10^t).

Methods inherited from class java.lang.Object

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

Field Detail

ERROR

public static java.lang.String ERROR

ERROR is a constant so that it will be consistent, so that one can search for it in output files. This is NOT final, so EDStatic can change it. This is the original definition, referenced by many other classes.

Constructor Detail

ErddapString2

public ErddapString2()

Method Detail

indexOf

public static int indexOf(char[] cArray,
                          char c,
                          int fromIndex)

Finds the first instance of c at or after fromIndex (0.. ) in cArray.

Parameters:

cArray -

c - the char you want to find

fromIndex - the index number of the position to start the search

Returns:

The first instance of c. If not found, it returns -1.

isLetter

public static boolean isLetter(int c)

This includes hiASCII/ISO Latin 1/ISO 8859-1, but not extensive unicode characters. Letters are A..Z, a..z, and #192..#255 (except #215 and #247). For unicode characters, see Java Lang Spec pg 14.

Parameters:

c - a char

Returns:

true if c is a letter

isDigit

public static boolean isDigit(int c)

0..9. Non-Latin numeric characters are not included (see Java Lang Spec pg 14).

Parameters:

c - a char

Returns:

true if c is a digit

replaceAll

public static java.lang.String replaceAll(java.lang.String s,
                                          char oldCh,
                                          char newCh)

Returns a string where all occurences of oldCh have been replaced with newCh. This doesn't throw exceptions if bad values.

parseInt

public static int parseInt(java.lang.String s)

Convert a string to an int. Leading or trailing spaces are automatically removed. This accepts hexadecimal integers starting with "0x". Leading 0's (e.g., 0012) are ignored; number is treated as decimal (not octal as Java would). Floating point numbers are rounded. This won't throw an exception if the number isn't formatted right. To make a string from an int, use ""+i, Integer.toHexString, or Integer.toString(i,radix).

Parameters:

s - is the String representation of a number.

Returns:

the int value from the String (or Integer.MAX_VALUE if error).

parseDouble

public static double parseDouble(java.lang.String s)

Convert a string to a double. Leading or trailing spaces are automatically removed. This accepts hexadecimal integers starting with "0x". Whole number starting with '0' (e.g., 012) is treated as decimal (not octal as Java would). This won't throw an exception if the number isn't formatted right.

Parameters:

s - is the String representation of a number.

Returns:

the double value from the String (a finite value, Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY, or Double.NaN if error).

parseLong

public static long parseLong(java.lang.String s)

This converts String representation of a long. Leading or trailing spaces are automatically removed. This *doesn't* round. So floating point values lead to Long.MAX_VALUE.

Parameters:

s - a valid String representation of a long value

Returns:

a long (or Long.MAX_VALUE if trouble).

toRational

public static int[] toRational(double d)

This converts a double to a rational number (m * 10^t). This is similar to Math2.mantissa and Math2.intExponent, but works via string manipulation to avoid roundoff problems (e.g., with 6.6260755e-24).

Parameters:

d -

Returns:

int[2]: [0]=m, [1]=t. (or {0, 0} if d=0, or {1, Integer.MAX_VALUE} if !finite(d))