Read C-style string from pointer

Convert a C-style null-terminated string pointer back to R character string. Handles UTF-8 decoding automatically.

Usage

tcc_read_cstring(
  ptr,
  max_bytes = NULL,
  null_action = c("na", "empty", "error")
)

Arguments

ptr

External pointer to C string

max_bytes

Optional maximum number of bytes to read (fixed-length read).

null_action

Behavior when ptr is NULL: one of "na", "empty", "error". Only effective when max_bytes is provided; without it a NULL pointer returns "".

Value

Character string, or NA/"" for NULL pointers depending on null_action.