net.snowflake.common.util

Class StringUtil

java.lang.Object

net.snowflake.common.util.StringUtil

public class StringUtil
extends Object

Author:

jhuang

Field Summary

Fields

Modifier and Type	Field and Description
static Pattern	octalCode

Constructor Summary

Constructors

Constructor and Description
StringUtil()

Method Summary

Modifier and Type	Method and Description
static String	checkAndConvertOctalToChar(String value) A small function to check if a string is an octal value and if so, convert it to the internal value the octal value represents.
static String	convertEscapedSequenceToChar(String value) Converts escape sequence to a char
static String	convertHexToChar(String value) Converts a string including an octal value to a character
static String	convertOctalToChar(String value) Converts a string including an octal value to an character
static boolean	isAlphaNumericUnderscore(String sequence) checks if input string contains number, alphabets and underscores.
static boolean	isPureAscii(String s) Is pure ASCII characters?
static String	quote(String str) return a quoted string if the string itself contains a quote.

Methods inherited from class java.lang.Object

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

Field Detail

octalCode

public static Pattern octalCode

Constructor Detail

StringUtil

public StringUtil()

Method Detail

checkAndConvertOctalToChar

public static String checkAndConvertOctalToChar(String value)

A small function to check if a string is an octal value and if so, convert it to the internal value the octal value represents. If not, it returns the original value. TODO: change this to handle octal value in any string, instead of octal value only string.

Parameters:

value - a string including an octal value

Returns:

a character

convertOctalToChar

public static String convertOctalToChar(String value)

Converts a string including an octal value to an character

Parameters:

value - a string including an octal value

Returns:

a character

convertHexToChar

public static String convertHexToChar(String value)

Converts a string including an octal value to a character

Parameters:

value - a string including an octal value

Returns:

a character

convertEscapedSequenceToChar

public static String convertEscapedSequenceToChar(String value)

Converts escape sequence to a char

Parameters:

value - an escape sequence

Returns:

a char

quote

public static String quote(String str)

return a quoted string if the string itself contains a quote.

Parameters:

str - a string

Returns:

a quoted string if a double quote is included otherwise the original string

isPureAscii

public static boolean isPureAscii(String s)

Is pure ASCII characters?

Parameters:

s - a string

Returns:

true if the string contains pure ASCII characters otherwise false

isAlphaNumericUnderscore

public static boolean isAlphaNumericUnderscore(String sequence)

checks if input string contains number, alphabets and underscores. Returns false if it contains any other characters.

Parameters:

sequence -

Returns:

true if string contains only alphabets, numbers and underscores otherwise false.