Struct CMap 

pub struct CMap { /* private fields */ }

A parsed ToUnicode CMap that maps character codes to Unicode strings.

Character codes are typically 1 or 2 bytes from the PDF font encoding. Unicode values may be single characters or multi-character strings (e.g., ligatures like “fi” → “fi”).

Implementations

impl CMap

pub fn parse(data: &[u8]) -> Result<Self, BackendError>

Parse a ToUnicode CMap from its raw byte content.

Extracts beginbfchar/endbfchar and beginbfrange/endbfrange sections to build the character code → Unicode mapping table.

pub fn lookup(&self, code: u32) -> Option<&str>

Look up the Unicode string for a character code.

Returns None if the code has no mapping in this CMap.

pub fn lookup_or_replacement(&self, code: u32) -> String

Look up the Unicode string for a character code, with fallback.

If no mapping is found, returns U+FFFD (REPLACEMENT CHARACTER).

pub fn len(&self) -> usize

Returns the number of mappings in this CMap.

pub fn is_empty(&self) -> bool

Returns true if this CMap has no mappings.

Trait Implementations

impl Clone for CMap

fn clone(&self) -> CMap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CMap

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

Formats the value using the given formatter.