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Create app.py
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app.py
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import os
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import shutil
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import torch
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import gradio as gr
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from diffusers import StableDiffusionPipeline, StableDiffusionXLPipeline
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from huggingface_hub import hf_hub_download, HfApi
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def convert_and_push(source_repo, file_name, model_type, target_repo, hf_token):
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# 檢查 Token 是否為空
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if not hf_token:
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return "❌ 錯誤:請輸入具有寫入權限的 Hugging Face Token!"
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# 定義暫存目錄,轉換完會刪除
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output_dir = "temp_diffusers_model"
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api = HfApi()
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try:
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# --- 第一步:從雲端下載檔案 ---
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gr.Info(f"正在從 {source_repo} 下載 {file_name}...")
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# hf_hub_download 會把檔案抓到 Space 的快取暫存區
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local_ckpt_path = hf_hub_download(
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repo_id=source_repo.strip(),
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filename=file_name.strip()
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)
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# --- 第二步:判斷模型版本並選擇對應的轉換引擎 ---
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# SD 1.5/2.1 與 SDXL 的結構不同,所以必須切換類別
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if model_type == "SDXL":
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gr.Info("偵測到 SDXL,使用 StableDiffusionXLPipeline 轉換...")
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pipeline_class = StableDiffusionXLPipeline
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else:
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gr.Info("使用 StableDiffusionPipeline 轉換 (SD1.5/2.1)...")
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pipeline_class = StableDiffusionPipeline
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# --- 第三步:執行核心轉換 ---
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# from_single_file 是一個強大的方法,能把單一 .safetensors 拆解成 Diffusers 資料夾結構
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# load_safety_checker=False: 關閉安全檢查器以節省 VRAM/RAM
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# torch_dtype=torch.float32: 在免費 CPU Space 建議用 float32,最穩定
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pipe = pipeline_class.from_single_file(
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local_ckpt_path,
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load_safety_checker=False,
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torch_dtype=torch.float32
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)
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# 將轉換好的各個子元件(unet, vae, tokenizer 等)存入暫存資料夾
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pipe.save_pretrained(output_dir)
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# --- 第四步:推送到你的 Hugging Face 倉庫 ---
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gr.Info(f"正在推送到目標倉庫: {target_repo}...")
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# 1. 自動建立目標倉庫 (如果已經存在則會忽略)
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api.create_repo(
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repo_id=target_repo.strip(),
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token=hf_token,
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exist_ok=True,
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repo_type="model"
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)
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# 2. 將整個資料夾上傳,這會自動完成 Diffusers 的標準檔案佈局
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api.upload_folder(
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folder_path=output_dir,
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repo_id=target_repo.strip(),
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token=hf_token,
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repo_type="model"
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)
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# --- 第五步:清理暫存,釋放硬碟空間 ---
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shutil.rmtree(output_dir)
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return f"✅ 成功完成!\n模型已轉換並推送到:https://huggingface.co{target_repo}"
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except Exception as e:
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# 發生錯誤時也嘗試清理暫存,避免硬碟爆掉
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if os.path.exists(output_dir):
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shutil.rmtree(output_dir)
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return f"❌ 出錯了:{str(e)}"
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# --- Gradio UI 排版 ---
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with gr.Blocks(theme=gr.themes.Soft(), title="SD 轉 Diffusers 工具") as demo:
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gr.Markdown("# 🚀 SD to Diffusers 雲端自動推送工具")
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gr.Markdown("本工具能將單一檔案模型 (.safetensors) 直接轉換為 Diffusers 格式並推送到你的個人 Repo。")
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with gr.Row():
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# 左邊區塊:來源模型資訊
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with gr.Column():
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gr.Markdown("### 📥 1. 來源模型 (Source)")
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src_repo = gr.Textbox(label="來源 Repo ID", placeholder="作者/倉庫名稱")
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src_file = gr.Textbox(label="來源檔案名稱", placeholder="包含副檔名,如 model.safetensors")
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m_type = gr.Radio(["SD1.5 / SD2.1", "SDXL"], label="模型版本", value="SD1.5 / SD2.1")
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# 右邊區塊:目標位置與金鑰
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with gr.Column():
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gr.Markdown("### 📤 2. 目標設定 (Target)")
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tgt_repo = gr.Textbox(label="你的目標 Repo ID", placeholder="你的名稱/新倉庫名稱")
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hf_token = gr.Textbox(label="Hugging Face Write Token", placeholder="需有 Write 權限的 Token", type="password")
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# 執行按鈕
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run_btn = gr.Button("🔥 開始轉換並推送", variant="primary")
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# 狀態回饋
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status_output = gr.Textbox(label="執行進度與狀態", lines=5)
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# 綁定按鈕動作
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run_btn.click(
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fn=convert_and_push,
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inputs=[src_repo, src_file, m_type, tgt_repo, hf_token],
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outputs=status_output
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)
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demo.launch()
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