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110 lines
2.8 KiB
Python
110 lines
2.8 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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@Author : yanyongyu
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@Date : 2021-03-12 13:42:43
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@LastEditors : yanyongyu
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@LastEditTime : 2021-11-01 14:05:41
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@Description : None
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@GitHub : https://github.com/yanyongyu
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"""
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__author__ = "yanyongyu"
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import asyncio
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import platform
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from contextlib import asynccontextmanager
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from os import getcwd
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from typing import Optional, AsyncIterator
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from playwright.async_api import Page, Browser, async_playwright, Error
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from init import logger
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from uvicorn.loops import asyncio as _asyncio
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from uvicorn import config
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def asyncio_setup():
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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@property
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def should_reload(self):
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return False
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if platform.system() == "Windows":
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_asyncio.asyncio_setup = asyncio_setup
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config.Config.should_reload = should_reload
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logger.warning("检测到当前为 Windows 系统，已自动注入猴子补丁")
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_browser: Optional[Browser] = None
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_playwright = None
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async def init(**kwargs) -> Browser:
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global _browser
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global _playwright
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_playwright = await async_playwright().start()
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try:
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_browser = await launch_browser(**kwargs)
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except Error:
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await install_browser()
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_browser = await launch_browser(**kwargs)
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return _browser
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async def launch_browser(**kwargs) -> Browser:
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return await _playwright.chromium.launch(**kwargs)
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async def get_browser(**kwargs) -> Browser:
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return _browser or await init(**kwargs)
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@asynccontextmanager
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async def get_new_page(**kwargs) -> AsyncIterator[Page]:
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browser = await get_browser()
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page = await browser.new_page(**kwargs)
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try:
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yield page
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finally:
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await page.close()
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async def shutdown_browser():
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await _browser.close()
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await _playwright.stop()
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async def install_browser():
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logger.info("正在安装 chromium")
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import sys
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from playwright.__main__ import main
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sys.argv = ["", "install", "chromium"]
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try:
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main()
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except SystemExit:
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pass
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async def html_to_pic(
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html: str, wait: int = 0, template_path: str = f"file://{getcwd()}", **kwargs
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) -> bytes:
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"""html转图片
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Args:
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html (str): html文本
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wait (int, optional): 等待时间. Defaults to 0.
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template_path (str, optional): 模板路径 如 "file:///path/to/template/"
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Returns:
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bytes: 图片, 可直接发送
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"""
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# logger.debug(f"html:\n{html}")
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if "file:" not in template_path:
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raise "template_path 应该为 file:///path/to/template"
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async with get_new_page(**kwargs) as page:
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await page.goto(template_path)
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await page.set_content(html, wait_until="networkidle")
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await page.wait_for_timeout(wait)
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img_raw = await page.screenshot(full_page=True)
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return img_raw
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