Struct EncodingResolver 

pub struct EncodingResolver { /* private fields */ }

Resolved encoding for a font, following PDF encoding resolution order.

Resolution order:

1. ToUnicode CMap (highest priority — direct CID/code → Unicode mapping)
2. Explicit /Encoding from font dictionary (standard name or dictionary with Differences)
3. Implicit/default encoding (typically StandardEncoding for Type1, identity for TrueType)

Implementations

impl EncodingResolver

pub fn new(default_encoding: FontEncoding) -> Self

Create a resolver with only a default encoding.

pub fn with_to_unicode(self, to_unicode: HashMap<u16, String>) -> Self

Set the ToUnicode CMap mappings (highest priority).

pub fn with_font_encoding(self, encoding: FontEncoding) -> Self

Set the explicit font encoding (second priority).

pub fn resolve(&self, code: u16) -> Option<String>

Resolve a character code to a Unicode string.

Follows the resolution order:

1. ToUnicode CMap (if present and has mapping for this code)
2. Explicit font encoding (if present)
3. Default encoding

Returns None only if no encoding level has a mapping.

pub fn decode_bytes(&self, bytes: &[u8]) -> String

Decode a byte string using the resolution chain.

Each byte is resolved independently. Unresolved bytes become U+FFFD.

Trait Implementations

impl Clone for EncodingResolver

fn clone(&self) -> EncodingResolver

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EncodingResolver

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

Formats the value using the given formatter.