Enum CaseNormalization 

#[non_exhaustive]
pub enum CaseNormalization {
    Preserve,
    AsciiLowercase,
    UnicodeLowercase,
    PlatformDefault,
}

How to transform letter case in a comparison key or token.

Platform notes

• Windows is normally case-insensitive for filesystem paths.
• Linux is normally case-sensitive.
• macOS may be either, depending on the volume.
• Case folding is not proof of filesystem identity.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Preserve

Leave case unchanged.

AsciiLowercase

ASCII A–Z → a–z only.

UnicodeLowercase

Unicode lowercase mapping (str::to_lowercase).

PlatformDefault

Platform-oriented default: ASCII lowercase on Windows; preserve elsewhere.

Implementations

impl CaseNormalization

pub fn apply(self, value: &str) -> String

Apply this case policy to value.

Trait Implementations

impl Clone for CaseNormalization

fn clone(&self) -> CaseNormalization

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for CaseNormalization

impl Debug for CaseNormalization

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for CaseNormalization

fn default() -> CaseNormalization

Returns the “default value” for a type.

impl Eq for CaseNormalization

impl PartialEq for CaseNormalization

fn eq(&self, other: &CaseNormalization) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CaseNormalization