software.amazon.smithy.utils

Class CaseUtils

java.lang.Object

software.amazon.smithy.utils.CaseUtils

public final class CaseUtils
extends java.lang.Object

Provides support for camelCase, snake_case, and other kinds of case conversions.

Method Summary

Modifier and Type	Method and Description
static java.lang.String	snakeToCamelCase(java.lang.String str) Converts all the delimiter separated words in a String into camelCase, that is each word is made up of a titlecase character and then a series of lowercase characters.
static java.lang.String	snakeToPascalCase(java.lang.String str) Converts all words separated by "_" into PascalCase, that is each word is made up of a titlecase character and then a series of lowercase characters.
static java.lang.String	toCamelCase(java.lang.String str) Converts all words separated by " ", "-", and "_" to CamelCase.
static java.lang.String	toCamelCase(java.lang.String str, boolean capitalizeFirstLetter, char... delimiters) Converts all the delimiter separated words in a String into camelCase, that is each word is made up of a titlecase character and then a series of lowercase characters.
static java.lang.String	toPascalCase(java.lang.String str) Converts all words separated by " ", "-", and "_" to CamelCase.
static java.lang.String	toSnakeCase(java.lang.String word) Convert a given word to snake_case with all lowercase letters.

Methods inherited from class java.lang.Object

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

Method Detail

snakeToPascalCase

public static java.lang.String snakeToPascalCase(java.lang.String str)

Converts all words separated by "_" into PascalCase, that is each word is made up of a titlecase character and then a series of lowercase characters.

PacalCase is just like CamelCase, except the first character is an uppercase letter.

Parameters:

str - the String to be converted to PascalCase, may be null

Returns:

camelCase of String, null if null String input

snakeToCamelCase

public static java.lang.String snakeToCamelCase(java.lang.String str)

Converts all the delimiter separated words in a String into camelCase, that is each word is made up of a titlecase character and then a series of lowercase characters.

The first character is always converted to lowercase.

Parameters:

str - the String to be converted to camelCase, may be null

Returns:

camelCase of String, null if null String input

toCamelCase

public static java.lang.String toCamelCase(java.lang.String str)

Converts all words separated by " ", "-", and "_" to CamelCase.

The first character is always converted to lowercase.

Parameters:

str - the String to be converted to camelCase, may be null

Returns:

camelCase of String, null if null String input

toPascalCase

public static java.lang.String toPascalCase(java.lang.String str)

Converts all words separated by " ", "-", and "_" to CamelCase.

PacalCase is just like CamelCase, except the first character is an uppercase letter.

Parameters:

str - the String to be converted to PascalCase, may be null

Returns:

camelCase of String, null if null String input

toCamelCase

public static java.lang.String toCamelCase(java.lang.String str,
                                           boolean capitalizeFirstLetter,
                                           char... delimiters)

Converts all the delimiter separated words in a String into camelCase, that is each word is made up of a titlecase character and then a series of lowercase characters.

The delimiters represent a set of characters understood to separate words. The first non-delimiter character after a delimiter will be capitalized. The first String character may or may not be capitalized and it's determined by the user input for capitalizeFirstLetter variable.

A null input String returns null. Capitalization uses the Unicode title case, normally equivalent to upper case and cannot perform locale-sensitive mappings.

 CaseUtils.toCamelCase(null, false)                                 = null
 CaseUtils.toCamelCase("", false, *)                                = ""
 CaseUtils.toCamelCase(*, false, null)                              = *
 CaseUtils.toCamelCase(*, true, new char[0])                        = *
 CaseUtils.toCamelCase("To.Camel.Case", false, new char[]{'.'})     = "toCamelCase"
 CaseUtils.toCamelCase(" to @ Camel case", true, new char[]{'@'})   = "ToCamelCase"
 CaseUtils.toCamelCase(" @to @ Camel case", false, new char[]{'@'}) = "toCamelCase"
 

Parameters:

str - the String to be converted to camelCase, may be null

capitalizeFirstLetter - boolean that determines if the first character of first word should be title case.

delimiters - set of characters to determine capitalization, null and/or empty array means whitespace

Returns:

camelCase of String, null if null String input

See Also:

Source

toSnakeCase

public static java.lang.String toSnakeCase(java.lang.String word)

Convert a given word to snake_case with all lowercase letters.

This method was based on Elephant Bird's underscore method. "-", " ", "\n", "\t", "\r" are replaced with "_".

Note: this method does not sanitize the string for use as a snake_case variable in any specific programming language.

Parameters:

word - The word to convert.

Returns:

The underscored version of the word

See Also:

Elephant bird