Module utils 

Constants

CONTENT_DEDUP_SAMPLE_BYTES

Size (in bytes) of the head/tail samples taken by content_dedup_hash_u64.

FONT_EXTENSIONS

Known font file extensions (lowercase).

Functions

collect_font_files

Breadth-first walk of a directory yielding paths to files with recognized font extensions.

content_dedup_hash_u64

Deterministic 64-bit “cheap” content hash derived from (file_size, first 4 KiB, last 4 KiB).

content_hash_u64

Deterministic 64-bit content hash over an arbitrary byte slice.

is_font_file

Check if a file has a recognized font extension.

normalize_family_name

Normalize a family/font name for comparison: lowercase, strip all non-alphanumeric characters.