Crate heck

heck is a case conversion library.

This library exists to provide case conversion between common cases like CamelCase and snake_case. It is intended to be unicode aware, internally consistent, and reasonably well performing.

Definition of a word boundary

Word boundaries are defined by non-alphanumeric characters, as well as within those words in this manner:

1. If an uppercase character is followed by lowercase letters, a word boundary is considered to be just prior to that uppercase character.
2. If multiple uppercase characters are consecutive, they are considered to be within a single word, except that the last will be part of the next word if it is followed by lowercase characters (see rule 1).

That is, “HelloWorld” is segmented Hello|World whereas “XMLHttpRequest” is segmented XML|Http|Request.

Characters not within words (such as spaces, punctuations, and underscores) are not included in the output string except as they are a part of the case being converted to. Multiple adjacent word boundaries (such as a series of underscores) are folded into one. (“hello__world” in snake case is therefore “hello_world”, not the exact same string). Leading or trailing word boundary indicators are dropped, except insofar as CamelCase capitalizes the first word.

Cases contained in this library:

1. UpperCamelCase
2. lowerCamelCase
3. snake_case
4. kebab-case
5. SHOUTY_SNAKE_CASE
6. Title Case
7. SHOUTY-KEBAB-CASE
8. Train-Case

Structs

AsKebabCase

This wrapper performs a kebab case conversion in fmt::Display.

AsLowerCamelCase

This wrapper performs a lower camel case conversion in fmt::Display.

AsPascalCase

This wrapper performs a upper camel case conversion in fmt::Display.

AsShoutyKebabCase

This wrapper performs a kebab case conversion in fmt::Display.

AsShoutySnakeCase

This wrapper performs a shouty snake case conversion in fmt::Display.

AsShoutySnekCase

This wrapper performs a shouty snake case conversion in fmt::Display.

AsSnakeCase

This wrapper performs a snake case conversion in fmt::Display.

AsSnekCase

This wrapper performs a snake case conversion in fmt::Display.

AsTitleCase

This wrapper performs a title case conversion in fmt::Display.

AsTrainCase

This wrapper performs a train case conversion in fmt::Display.

AsUpperCamelCase

This wrapper performs a upper camel case conversion in fmt::Display.

Traits

ToKebabCase

This trait defines a kebab case conversion.

ToLowerCamelCase

This trait defines a lower camel case conversion.

ToPascalCase

ToPascalCase is an alias for ToUpperCamelCase. See ToUpperCamelCase for more documentation.

ToShoutyKebabCase

This trait defines a shouty kebab case conversion.

ToShoutySnakeCase

This trait defines a shouty snake case conversion.

ToShoutySnekCase

Oh heck, ToShoutySnekCase is an alias for ToShoutySnakeCase. See ToShoutySnakeCase for more documentation.

ToSnakeCase

This trait defines a snake case conversion.

ToSnekCase

Oh heck, SnekCase is an alias for ToSnakeCase. See ToSnakeCase for more documentation.

ToTitleCase

This trait defines a title case conversion.

ToTrainCase

This trait defines a train case conversion.

ToUpperCamelCase

This trait defines an upper camel case conversion.