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custom_markdown_convert.py
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from bs4 import BeautifulSoup
from urllib.parse import urlparse, urljoin
from markdownify import MarkdownConverter, abstract_inline_conversion, chomp
class CustomMarkdownConverter(MarkdownConverter):
def __init__(self, current_url, **kwargs):
super().__init__(**kwargs)
self.current_url = current_url
self.convert_to_absolute = kwargs.get('convert_to_absolute', False)
def convert_img(self, element, text, convert_as_inline):
alt_text = element.attrs.get('alt', '') or ''
src_url = element.attrs.get('src', '') or ''
title_text = element.attrs.get('title', '') or ''
if title_text:
escaped_title = title_text.replace('"', r'\"')
title_part = f' "{escaped_title}"'
else:
title_part = ''
if self.convert_to_absolute:
src_url = urljoin(self.current_url, src_url)
if convert_as_inline and element.parent.name not in self.options['keep_inline_images_in']:
return alt_text
return f''
def _process_table_element(self, element):
soup = BeautifulSoup(str(element), 'html.parser')
for tag in soup.find_all(True):
attrs_to_keep = ['colspan', 'rowspan']
tag.attrs = {key: value for key, value in tag.attrs.items() if key in attrs_to_keep}
return str(soup)
def convert_table(self, element, text, convert_as_inline):
soup = BeautifulSoup(str(element), 'html.parser')
has_colspan_or_rowspan = any(
tag.has_attr('colspan') or tag.has_attr('rowspan') for tag in soup.find_all(['td', 'th']))
if has_colspan_or_rowspan:
return self._process_table_element(element)
else:
return super().convert_table(element, text, convert_as_inline)
def convert_a(self, element, text, convert_as_inline):
prefix, suffix, text = chomp(text)
if not text:
return ''
href_url = element.get('href')
title_text = element.get('title')
if self.convert_to_absolute:
href_url = urljoin(self.current_url, href_url)
if (self.options['autolinks']
and text.replace(r'\_', '_') == href_url
and not title_text
and not self.options['default_title']):
return f'<{href_url}>'
if self.options['default_title'] and not title_text:
title_text = href_url
if title_text:
escaped_title = title_text.replace('"', r'\"')
title_part = f' "{escaped_title}"'
else:
title_part = ''
return f'{prefix}[{text}]({href_url}{title_part}){suffix}' if href_url else text
convert_b = abstract_inline_conversion(lambda self: 2 * self.options['strong_em_symbol'])
def html2md(html_content, current_url, **options):
options['current_url'] = current_url
return CustomMarkdownConverter(**options).convert(html_content)
# 示例用法
html_content = """
<html>
<body>
<img src="/path/to/image.jpg" alt="示例图片">
<a href="/path/to/page">示例链接</a>
<table>
<tr>
<td colspan="2">Cell with colspan</td>
</tr>
<tr>
<td>Cell 1</td>
<td>Cell 2</td>
</tr>
</table>
</body>
</html>
"""
# 假设这是当前页面的完整 URL
current_url = "https://example.com/some/page.html"
# 将 HTML 转换为 Markdown
markdown_content = html2md(html_content, current_url=current_url, convert_to_absolute=True)
print(markdown_content)