mirror of https://github.com/searxng/searxng.git
111 lines
3.2 KiB
Python
111 lines
3.2 KiB
Python
from HTMLParser import HTMLParser
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#import htmlentitydefs
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import csv
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from codecs import getincrementalencoder
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import cStringIO
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import re
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from random import choice
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ua_versions = ('26.0', '27.0', '28.0')
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ua_os = ('Windows NT 6.3; WOW64', 'X11; Linux x86_64; rv:26.0')
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ua = "Mozilla/5.0 ({os}) Gecko/20100101 Firefox/{version}"
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def gen_useragent():
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# TODO
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return ua.format(os=choice(ua_os), version=choice(ua_versions))
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def highlight_content(content, query):
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if not content:
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return None
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# ignoring html contents
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# TODO better html content detection
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if content.find('<') != -1:
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return content
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query = query.decode('utf-8')
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if content.lower().find(query.lower()) > -1:
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query_regex = u'({0})'.format(re.escape(query))
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content = re.sub(query_regex, '<span class="highlight">\\1</span>',
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content, flags=re.I | re.U)
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else:
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regex_parts = []
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for chunk in query.split():
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if len(chunk) == 1:
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regex_parts.append(u'\W+{0}\W+'.format(re.escape(chunk)))
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else:
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regex_parts.append(u'{0}'.format(re.escape(chunk)))
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query_regex = u'({0})'.format('|'.join(regex_parts))
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content = re.sub(query_regex, '<span class="highlight">\\1</span>',
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content, flags=re.I | re.U)
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return content
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class HTMLTextExtractor(HTMLParser):
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def __init__(self):
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HTMLParser.__init__(self)
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self.result = []
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def handle_data(self, d):
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self.result.append(d)
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def handle_charref(self, number):
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if number[0] in (u'x', u'X'):
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codepoint = int(number[1:], 16)
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else:
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codepoint = int(number)
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self.result.append(unichr(codepoint))
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def handle_entityref(self, name):
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#codepoint = htmlentitydefs.name2codepoint[name]
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#self.result.append(unichr(codepoint))
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self.result.append(name)
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def get_text(self):
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return u''.join(self.result)
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def html_to_text(html):
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s = HTMLTextExtractor()
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s.feed(html)
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return s.get_text()
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class UnicodeWriter:
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"""
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A CSV writer which will write rows to CSV file "f",
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which is encoded in the given encoding.
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"""
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def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
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# Redirect output to a queue
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self.queue = cStringIO.StringIO()
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self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
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self.stream = f
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self.encoder = getincrementalencoder(encoding)()
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def writerow(self, row):
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unicode_row = []
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for col in row:
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if type(col) == str or type(col) == unicode:
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unicode_row.append(col.encode('utf-8').strip())
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else:
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unicode_row.append(col)
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self.writer.writerow(unicode_row)
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# Fetch UTF-8 output from the queue ...
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data = self.queue.getvalue()
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data = data.decode("utf-8")
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# ... and reencode it into the target encoding
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data = self.encoder.encode(data)
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# write to the target stream
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self.stream.write(data)
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# empty queue
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self.queue.truncate(0)
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def writerows(self, rows):
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for row in rows:
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self.writerow(row)
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