61 lines
1.3 KiB
Python
61 lines
1.3 KiB
Python
from bs4 import BeautifulSoup, Tag, NavigableString
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_NEWLINE_INDICATOR = '<<<newline>>>'
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def _bold(elem):
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elem.replace_with('*%s*' % elem.text)
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def _unordered_list(elem):
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constructed = ''
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for child in elem.children:
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if child.name == 'li':
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constructed += '* %s\n' % child.text
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elem.replace_with(constructed)
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def _horizontal_rule(elem):
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elem.replace_with('%s\n' % ('-' * 80))
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def _anchor(elem):
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elem.replace_with('[%s](%s)' % (elem.text, elem['href']))
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def _table(elem):
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elem.replace_with('%s%s' % (elem.text, _NEWLINE_INDICATOR))
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_ELEMENT_REPLACER = {
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'b': _bold,
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'strong': _bold,
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'ul': _unordered_list,
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'hr': _horizontal_rule,
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'a': _anchor,
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'table': _table,
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}
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def _collapse_whitespace(text):
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new_lines = []
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lines = text.split('\n')
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for line in lines:
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if not line.strip():
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continue
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new_lines.append(line.strip().replace(_NEWLINE_INDICATOR, '\n'))
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return '\n'.join(new_lines)
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def html2text(html):
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soup = BeautifulSoup(html, 'html5lib')
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_html2text(soup)
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return _collapse_whitespace(soup.text)
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def _html2text(elem):
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for child in elem.children:
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if isinstance(child, Tag):
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_html2text(child)
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elif isinstance(child, NavigableString):
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# No changes necessary
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continue
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if elem.parent:
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if elem.name in _ELEMENT_REPLACER:
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_ELEMENT_REPLACER[elem.name](elem)
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