Module cff_parser 

CFF (Compact Font Format) binary parser.

Parses CFF binary data (Adobe TN#5176) into structured CffFont objects. CFF is a compact binary encoding for Type 1-style fonts using Type 2 charstrings.

CFF data appears in PostScript via the FontSet resource mechanism: FontSetInit /ProcSet findresource begin … StartData

This parser handles:

• CFF Header, Name INDEX, Top DICT, String INDEX, Global Subr INDEX
• CharStrings INDEX, charset, encoding, Private DICT, Local Subr INDEX
• Both name-keyed and CID-keyed fonts
• Predefined charsets (ISOAdobe, Expert, ExpertSubset) and encodings

Structs

CffFont

A parsed CFF font.

FdEntry

Per-FD entry for CID fonts (from FDArray).

Constants

EXPERT_ENCODING_MAP

Expert Encoding — (code, SID) pairs for non-zero entries.

Functions

get_sid_string

Resolve a String ID (SID) to its string. SID 0–390 are predefined standard strings. SID >= 391 indexes into the String INDEX (offset by 391).

parse_cff

Parse CFF binary data into a list of CffFont objects.