In-progress reassembly of one LFN chain across the directory scan. More...

#include <ra8_fs_fat_types_internal.h>

Data Fields
uint16_t	units [k_lfn_write_max]
	Reassembled UTF-16LE units; 0 ends it.
uint8_t	checksum
	8.3 checksum the chain claims.
uint8_t	have
	1 once any group has been accumulated.

Detailed Description

In-progress reassembly of one LFN chain across the directory scan.

The name accumulates as UTF-16 CODE UNITS, which is what the slots carry, and is converted to UTF-8 only where a caller is handed it. Holding it as char was the shape that forced the old reader to substitute ? for every unit above 0x7F: a group writes at a fixed UNIT offset, and no byte-indexed buffer can take a variable-width encoding at a fixed index (#606).

A unit of zero terminates the name, exactly as the NUL did before, which is why priv_lfn_reset() clears the whole array: a group that never arrived leaves zeros, and the name stops there rather than running on into another chain's characters.