Function _fetch_index_file

src/diffusers/models/model_loading_utils.py:501–548

(
    is_local,
    pretrained_model_name_or_path,
    subfolder,
    use_safetensors,
    cache_dir,
    variant,
    force_download,
    proxies,
    local_files_only,
    token,
    revision,
    user_agent,
    commit_hash,
    dduf_entries: dict[str, DDUFEntry] | None = None,
)

def _fetch_index_file(
    is_local,
    pretrained_model_name_or_path,
    subfolder,
    use_safetensors,
    cache_dir,
    variant,
    force_download,
    proxies,
    local_files_only,
    token,
    revision,
    user_agent,
    commit_hash,
    dduf_entries: dict[str, DDUFEntry] | None = None,
):
    if is_local:
        index_file = Path(
            pretrained_model_name_or_path,
            subfolder or "",
            _add_variant(SAFE_WEIGHTS_INDEX_NAME if use_safetensors else WEIGHTS_INDEX_NAME, variant),
        )
    else:
        index_file_in_repo = Path(
            subfolder or "",
            _add_variant(SAFE_WEIGHTS_INDEX_NAME if use_safetensors else WEIGHTS_INDEX_NAME, variant),
        ).as_posix()
        try:
            index_file = _get_model_file(
                pretrained_model_name_or_path,
                weights_name=index_file_in_repo,
                cache_dir=cache_dir,
                force_download=force_download,
                proxies=proxies,
                local_files_only=local_files_only,
                token=token,
                revision=revision,
                subfolder=None,
                user_agent=user_agent,
                commit_hash=commit_hash,
                dduf_entries=dduf_entries,
            )
            if not dduf_entries:
                index_file = Path(index_file)
        except (EntryNotFoundError, EnvironmentError):
            index_file = None

    return index_file


def _fetch_index_file_legacy(