Struct ZeroWidthText 

pub struct ZeroWidthText;

Zero-width character text steganography adapter (STUB).

NOT YET IMPLEMENTED: Zero-width Unicode characters (ZWSP, ZWNJ, ZWJ, etc.) have complex grapheme clustering rules that make reliable embedding/extraction difficult. Format characters can be combined with adjacent characters by the Unicode grapheme segmentation algorithm in context-dependent ways.

TODO(T15): Implement zero-width text steganography:

• Research Unicode-safe zero-width character pairs that remain separate graphemes
• Consider alternative approaches (variation selectors, combining marks)
• Extensive testing with all Unicode scripts (Arabic, Thai, Devanagari, emoji ZWJ sequences)
• Validate grapheme-cluster safety across all contexts

Implementations

impl ZeroWidthText

pub const fn new() -> Self

Create a new zero-width text embedder.

Trait Implementations

impl Debug for ZeroWidthText

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

Formats the value using the given formatter.

impl Default for ZeroWidthText

fn default() -> ZeroWidthText

Returns the “default value” for a type.

impl EmbedTechnique for ZeroWidthText

fn technique(&self) -> StegoTechnique

The technique identifier for this implementation.

fn capacity(&self, _cover: &CoverMedia) -> Result<Capacity, StegoError>

Estimate how many payload bytes cover can hold.

fn embed( &self, _cover: CoverMedia, _payload: &Payload, ) -> Result<CoverMedia, StegoError>

Embed payload into cover, returning the stego cover.

impl ExtractTechnique for ZeroWidthText

fn technique(&self) -> StegoTechnique

The technique identifier for this implementation.

fn extract(&self, _cover: &CoverMedia) -> Result<Payload, StegoError>

Extract a hidden payload from stego.