Remove Elinks support and add a pure python XHTML/CSS parser.
This commit is contained in:
Emmanuel Gil Peyrot
parent
2fe05e12a4
commit
00e12ccec1
1 changed files with 117 additions and 83 deletions
200
src/xhtml.py
200
src/xhtml.py
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@ -38,51 +38,126 @@ def get_body_from_message_stanza(message):
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if config.get('enable_xhtml_im', 'true') == 'true':
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xhtml_body = message['xhtml_im']
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if xhtml_body:
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xhtml_body = convert_links_to_plaintext(xhtml_body)
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try:
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shell_body = xhtml_code_to_shell_colors(xhtml_body)
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except OSError:
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log.debug('html parsing failed')
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else:
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return shell_colors_to_poezio_colors(shell_body)
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return xhtml_to_poezio_colors(xhtml_body)
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return message['body']
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def convert_links_to_plaintext(text):
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"""
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Replace
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<a href='URL'>click</a>
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by
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<url> (click)
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in plain text
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"""
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def xhtml_to_poezio_colors(text):
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def parse_css(css):
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def get_color(string):
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if value == 'black':
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return 0
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if value == 'red':
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return 1
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if value == 'green':
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return 2
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if value == 'yellow':
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return 3
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if value == 'blue':
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return 4
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if value == 'magenta':
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return 5
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if value == 'cyan':
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return 6
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if value == 'white':
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return 7
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if value == 'default':
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return 8
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shell = ''
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rules = css.split(';')
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for rule in rules:
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key, value = rule.split(':', 1)
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key = key.strip()
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value = value.strip()
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log.debug(value)
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if key == 'background-color':
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pass#shell += '\x191'
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elif key == 'color':
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shell += '\x19%d' % get_color(value)
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elif key == 'font-style':
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shell += '\x19i'
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elif key == 'font-weight':
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shell += '\x19b'
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elif key == 'margin-left':
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shell += ' '
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elif key == 'text-align':
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pass
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elif key == 'text-decoration':
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if value == 'underline':
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shell += '\x19u'
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elif value == 'blink':
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shell += '\x19a'
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return shell
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log.debug(text)
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xml = ElementTree(ET.fromstring(text))
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for parent in xml.getiterator():
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previous_child = None
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for child in parent:
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if child.tag == '{http://www.w3.org/1999/xhtml}a':
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if child.attrib['href'] != child.text:
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if child.text is None and 'title' in child.attrib:
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link_text = '\n%s (%s)' % (child.attrib['href'], child.attrib['title'])
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else:
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link_text = '\n%s (%s)' % (child.attrib['href'], child.text)
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else:
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link_text = child.text
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if previous_child is not None:
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if previous_child.tail is None:
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previous_child.tail = link_text
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else:
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previous_child.tail += link_text
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else:
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if parent.text is None:
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parent.text = link_text
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else:
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parent.text += link_text
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parent.remove(child)
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previous_child = child
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if version_info.minor <= 1:
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return ET.tostring(xml.getroot())
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return ET.tostring(xml.getroot(), encoding=str)
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xml = ET.fromstring(text)
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message = ''
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for elem in xml.iter():
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if elem.tag == '{http://www.w3.org/1999/xhtml}a':
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if 'href' in elem.attrib and elem.attrib['href'] != elem.text:
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message += '\x19u%s\x19o (%s)' % (elem.attrib['href'], elem.text)
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else:
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message += '\x19u' + elem.text + '\x19o'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}blockquote':
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message += '“'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}body':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}br':
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message += '\n'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}cite':
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message += '\x19u'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}em':
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message += '\x19i'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}img' and 'src' in elem.attrib:
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if elem.attrib['alt']:
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message += '%s (%s)' % (elem.attrib['src'], elem.attrib['alt'])
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else:
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message += elem.attrib['src']
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elif elem.tag == '{http://www.w3.org/1999/xhtml}li':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}ol':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}p':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}span':
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pass
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elif elem.tag == '{http://www.w3.org/1999/xhtml}strong':
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message += '\x19b'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}ul':
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pass
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if ('style' in elem.attrib and elem.tag != '{http://www.w3.org/1999/xhtml}br'
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and elem.tag != '{http://www.w3.org/1999/xhtml}em'
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and elem.tag != '{http://www.w3.org/1999/xhtml}strong'):
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message += parse_css(elem.attrib['style'])
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if (elem.text and elem.tag != '{http://www.w3.org/1999/xhtml}a'
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and elem.tag != '{http://www.w3.org/1999/xhtml}br'
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and elem.tag != '{http://www.w3.org/1999/xhtml}img'):
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message += elem.text
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if ('style' in elem.attrib and elem.tag != '{http://www.w3.org/1999/xhtml}br'
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and elem.tag != '{http://www.w3.org/1999/xhtml}em'
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and elem.tag != '{http://www.w3.org/1999/xhtml}strong'):
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message += '\x19o'
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if elem.tag == '{http://www.w3.org/1999/xhtml}blockquote':
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message += '”'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}cite':
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message += '\x19o'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}em':
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message += '\x19o'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}strong' or elem.tag == '{http://www.w3.org/1999/xhtml}b':
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message += '\x19o'
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elif elem.tag == '{http://www.w3.org/1999/xhtml}u':
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message += '\x19o'
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if 'title' in elem.attrib:
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message += ' [' + elem.attrib['title'] + ']'
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if elem.tail:
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message += elem.tail
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return message
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def clean_text(string):
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@ -148,47 +223,6 @@ def poezio_colors_to_html(string):
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res += "</p></body>"
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return res.replace('\n', '<br />')
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def shell_colors_to_poezio_colors(string):
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"""
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'shell colors' means something like:
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Bonjour ^[[0;32msalut^[[0m
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The current understanding of this syntax is:
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n = 0: reset all attributes to defaults
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n = 1: activate bold
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n >= 30 and n <= 37: set the foreground to n-30
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"""
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def repl(matchobj):
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exp = matchobj.group(0)[2:-1]
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numbers = [int(nb) for nb in exp.split(';')]
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res = ''
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for num in numbers:
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if num == 0:
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res += '\x19o'
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elif num == 1:
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res += '\x19b'
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elif num >= 31 and num <= 37:
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res += '\x19%d' % ((num-30)%7,)
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return res
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def remove_elinks_indent(string):
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lines = string.split('\n')
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for i, line in enumerate(lines):
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lines[i] = re.sub(' ', '', line, 1)
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return '\n'.join(lines)
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res = shell_colors_re.sub(repl, string).strip()
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res = remove_elinks_indent(res)
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return res
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def xhtml_code_to_shell_colors(string):
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"""
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Use a console browser to parse the xhtml and
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make it return a shell-colored string
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"""
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process = subprocess.Popen(["elinks", "-dump", "-dump-color-mode", "2"], stdout=subprocess.PIPE, stdin=subprocess.PIPE)
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result = process.communicate(input=string.encode('utf-8'))[0]
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return result.decode('utf-8').strip()
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def poezio_colors_to_xhtml(string):
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"""
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