Recase

Recase helps you to convert a string from any case to any case.

Why?

One can ask: "Why should I use Recase when I can use built-in Macro module?". But, you have to keep in mind that Macro's functions are not suitable for general case usage:

Do not use it as a general mechanism for underscoring or camelizing strings as it does not support Unicode or characters that are not valid in Elixir identifiers.

Installation

def deps do
  [
    {:recase, "~> 0.5"}
  ]
end

Usage

Pascal

Pascal (or Upper) case uses mixed case with lower and upper cased characters. Separates words from each other with the upper case letters. Starts with upper case letter.

Recase.to_pascal("some-value") # => "SomeValue"
Recase.to_pascal("Some value") # => "SomeValue"

Camel

Camel case uses mixed case with lower and upper cased characters. Separates words from each other with the upper cased letters. Starts with lower case letter.

Recase.to_camel("some-value") # => "someValue"
Recase.to_camel("Some Value") # => "someValue"

Snake

Snake cases uses all lower case. Uses _ as a separator.

Recase.to_snake("someValue") # => "some_value"
Recase.to_snake("Some Value") # => "some_value"

Kebab

Kebab cases uses all lower case. Uses - as a separator.

Recase.to_kebab("someValue") # => "some-value"
Recase.to_kebab("Some Value") # => "some-value"

Constant

Constant case uses all upper case. Uses _ as a separator.

Recase.to_constant("SomeValue") # => "SOME_VALUE"
Recase.to_constant("some value") # => "SOME_VALUE"

Dot

Dot case uses all lower case similar to snake case. Uses . as a separator.

Recase.to_dot("SomeValue") # => "some.value"
Recase.to_dot("some value") # => "some.value"

Path

Path case preserves case, you can also provide a separator as the second argument.

Recase.to_path("SomeValue") # => "Some/Value"
Recase.to_path("some value", "\\") # => "some\\value"

Sentence

Sentence case uses the same rules as regular sentence. First letter is uppercase all others letters are lowercase separated by spaces.

Recase.to_sentence("SomeValue") # => "Some value"
Recase.to_sentence("some value") # => "Some value"

Title

Title case applies a "Title Style" to all words in a sentence.

Recase.to_title("some-value") # => "Some Value"
Recase.to_title("some value") # => "Some Value"

Header

Header case uses the same case as PascalCase, while using - as a separator.

Recase.to_header("SomeValue") # => "Some-Value"
Recase.to_header("some value") # => "Some-Value"

Enumerable

You can convert all keys in an enumerable with:

Recase.Enumerable.convert_keys(
  %{"yourKey" => "value"},
  &Recase.to_snake/1
) # => %{"your_key" => "value"}

Recase.Enumerable.convert_keys(
  %{"your_key" => "value"},
  &Recase.to_camel/1
) # => %{"yourKey" => "value"}

Recase.Enumerable.atomize_keys(
  %{"yourKey" => "value"},
  &Recase.to_snake/1
) # => %{your_key: "value"}

Recase.Enumerable.atomize_keys(
  %{"your_key" => "value"},
  &Recase.to_camel/1
) # => %{yourKey: "value"}

Changelog

Full changelog is available here.

Copyright and License

This work is free. You can redistribute it and/or modify it under the terms of the MIT License. See the LICENSE.md file for more details.

Thanks

Thanks to Gyan Lakhwani for the logo.

wemake-services/recase