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95 lines
3.2 KiB
Python
95 lines
3.2 KiB
Python
import base64
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import typing
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import io
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from urllib.parse import urlparse, parse_qs
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import ssl
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import aiohttp
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import PIL.Image
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async def get_wecom_image_base64(pic_url: str) -> tuple[str, str]:
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"""
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下载企业微信图片并转换为 base64
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:param pic_url: 企业微信图片URL
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:return: (base64_str, image_format)
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"""
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async with aiohttp.ClientSession() as session:
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async with session.get(pic_url) as response:
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if response.status != 200:
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raise Exception(f"Failed to download image: {response.status}")
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# 读取图片数据
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image_data = await response.read()
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# 获取图片格式
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content_type = response.headers.get('Content-Type', '')
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image_format = content_type.split('/')[-1] # 例如 'image/jpeg' -> 'jpeg'
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# 转换为 base64
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import base64
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image_base64 = base64.b64encode(image_data).decode('utf-8')
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return image_base64, image_format
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def get_qq_image_downloadable_url(image_url: str) -> tuple[str, dict]:
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"""获取QQ图片的下载链接"""
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parsed = urlparse(image_url)
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query = parse_qs(parsed.query)
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return f"http://{parsed.netloc}{parsed.path}", query
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async def get_qq_image_bytes(image_url: str, query: dict={}) -> tuple[bytes, str]:
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"""[弃用]获取QQ图片的bytes"""
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image_url, query_in_url = get_qq_image_downloadable_url(image_url)
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query = {**query, **query_in_url}
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ssl_context = ssl.create_default_context()
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ssl_context.check_hostname = False
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ssl_context.verify_mode = ssl.CERT_NONE
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async with aiohttp.ClientSession(trust_env=False) as session:
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async with session.get(image_url, params=query, ssl=ssl_context) as resp:
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resp.raise_for_status()
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file_bytes = await resp.read()
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content_type = resp.headers.get('Content-Type')
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if not content_type:
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image_format = 'jpeg'
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elif not content_type.startswith('image/'):
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pil_img = PIL.Image.open(io.BytesIO(file_bytes))
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image_format = pil_img.format.lower()
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else:
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image_format = content_type.split('/')[-1]
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return file_bytes, image_format
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async def qq_image_url_to_base64(
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image_url: str
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) -> typing.Tuple[str, str]:
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"""[弃用]将QQ图片URL转为base64，并返回图片格式
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Args:
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image_url (str): QQ图片URL
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Returns:
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typing.Tuple[str, str]: base64编码和图片格式
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"""
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image_url, query = get_qq_image_downloadable_url(image_url)
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# Flatten the query dictionary
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query = {k: v[0] for k, v in query.items()}
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file_bytes, image_format = await get_qq_image_bytes(image_url, query)
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base64_str = base64.b64encode(file_bytes).decode()
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return base64_str, image_format
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async def extract_b64_and_format(image_base64_data: str) -> typing.Tuple[str, str]:
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"""提取base64编码和图片格式
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data:image/jpeg;base64,xxx
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提取出base64编码和图片格式
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"""
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base64_str = image_base64_data.split(',')[-1]
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image_format = image_base64_data.split(':')[-1].split(';')[0].split('/')[-1]
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return base64_str, image_format |