Function cbm_arena_sprintf

src/foundation/arena.c:110–128

}

char *cbm_arena_sprintf(CBMArena *a, const char *fmt, ...) {
    va_list args;
    va_start(args, fmt);
    int needed = vsnprintf(NULL, 0, fmt, args);
    va_end(args);
    if (needed < 0) {
        return NULL;
    }

    char *dst = (char *)cbm_arena_alloc(a, (size_t)needed + SKIP_ONE);
    if (!dst) {
        return NULL;
    }

    va_start(args, fmt);
    vsnprintf(dst, (size_t)needed + SKIP_ONE, fmt, args);
    va_end(args);
    return dst;
}

void cbm_arena_reset(CBMArena *a) {
    /* Keep first block, free the rest */