import os
from .clip_encoder import CLIPVisionTower


def build_vision_tower(vision_tower_cfg, **kwargs):
    vision_tower = getattr(
        vision_tower_cfg, "mm_vision_tower", getattr(vision_tower_cfg, "vision_tower", None)
    )
    is_absolute_path_exists = os.path.exists(vision_tower)
    if (
        is_absolute_path_exists
        or vision_tower.startswith("openai")
        or vision_tower.startswith("laion")
    ):
        return CLIPVisionTower(vision_tower, args=vision_tower_cfg, **kwargs)