Function cbm_module_path_utf8

src/foundation/win_utf8.h:166–193

Resolve the running image without passing through the active ANSI code page. * The returned UTF-8 string is heap allocated. Grow dynamically so an * extended-length install path is never mistaken for a complete path. */

 * The returned UTF-8 string is heap allocated. Grow dynamically so an
 * extended-length install path is never mistaken for a complete path. */
static inline char *cbm_module_path_utf8(void) {
    DWORD capacity = 512U;
    while (capacity <= 32768U) {
        wchar_t *wide = (wchar_t *)calloc((size_t)capacity, sizeof(*wide));
        if (!wide) {
            return NULL;
        }
        SetLastError(ERROR_SUCCESS);
        DWORD length = GetModuleFileNameW(NULL, wide, capacity);
        if (length > 0U && length < capacity) {
            cbm_module_path_unprefix(wide);
            char *utf8 = cbm_wide_to_utf8(wide);
            free(wide);
            return utf8;
        }
        DWORD error = GetLastError();
        free(wide);
        if (length == 0U || (length < capacity && error != ERROR_INSUFFICIENT_BUFFER) ||
            capacity == 32768U) {
            return NULL;
        }
        capacity *= 2U;
        if (capacity > 32768U) {
            capacity = 32768U;
        }
    }
    return NULL;
}

#endif /* _WIN32 */
#endif /* CBM_WIN_UTF8_H */