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"""
Utility functions for PaperBanana framework.
"""
import base64
import mimetypes
import os
from typing import Optional
def save_binary_file(file_name: str, data: bytes) -> str:
"""
Save binary data to a file.
Args:
file_name: Name of the file to save
data: Binary data to write
Returns:
Path to the saved file
"""
with open(file_name, "wb") as f:
f.write(data)
print(f"File saved to: {file_name}")
return file_name
def encode_image_to_base64(image_path: str) -> str:
"""
Encode an image file to base64 string.
Args:
image_path: Path to the image file
Returns:
Base64 encoded string
"""
with open(image_path, "rb") as f:
return base64.b64encode(f.read()).decode('utf-8')
def get_mime_type(file_path: str) -> Optional[str]:
"""
Get MIME type for a file.
Args:
file_path: Path to the file
Returns:
MIME type string or None
"""
mime_type, _ = mimetypes.guess_type(file_path)
return mime_type
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