Struct CMap 

pub struct CMap {
    pub code_to_cid: HashMap<u32, u32>,
    pub code_lengths: [u8; 256],
    pub wmode: u8,
}

Parsed CMap: maps character codes to CIDs.

Fields

code_to_cid: HashMap<u32, u32>

Code-to-CID mapping (character code → CID).

code_lengths: [u8; 256]

Precomputed first-byte → code length table. 0 = not in any codespace range (treat as 2-byte default).

wmode: u8

Writing mode: 0 = horizontal, 1 = vertical.

Implementations

impl CMap

pub fn identity() -> Self

Create an Identity CMap (code == CID, all 2-byte).

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

Decode a character code to a CID.

pub fn code_width(&self, first_byte: u8) -> usize

Get the byte width of a character code starting with the given byte.

pub fn parse(data: &[u8]) -> Self

Parse a CMap from stream data.

pub fn parse_with_loader( data: &[u8], loader: Option<&dyn Fn(&[u8]) -> Option<Vec<u8>>>, ) -> Self

Parse a CMap, optionally resolving usecmap with a loader function.