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[youtubedl] / youtube_dl / extractor / googlesearch.py
1 from __future__ import unicode_literals
2
3 import itertools
4 import re
5
6 from .common import SearchInfoExtractor
7 from ..utils import (
8 compat_urllib_parse,
9 )
10
11
12 class GoogleSearchIE(SearchInfoExtractor):
13 IE_DESC = 'Google Video search'
14 _MAX_RESULTS = 1000
15 IE_NAME = 'video.google:search'
16 _SEARCH_KEY = 'gvsearch'
17
18 def _get_n_results(self, query, n):
19 """Get a specified number of results for a query"""
20
21 entries = []
22 res = {
23 '_type': 'playlist',
24 'id': query,
25 'title': query,
26 }
27
28 for pagenum in itertools.count():
29 result_url = (
30 'http://www.google.com/search?tbm=vid&q=%s&start=%s&hl=en'
31 % (compat_urllib_parse.quote_plus(query), pagenum * 10))
32
33 webpage = self._download_webpage(
34 result_url, 'gvsearch:' + query,
35 note='Downloading result page ' + str(pagenum + 1))
36
37 for hit_idx, mobj in enumerate(re.finditer(
38 r'<h3 class="r"><a href="([^"]+)"', webpage)):
39
40 # Skip playlists
41 if not re.search(r'id="vidthumb%d"' % (hit_idx + 1), webpage):
42 continue
43
44 entries.append({
45 '_type': 'url',
46 'url': mobj.group(1)
47 })
48
49 if (len(entries) >= n) or not re.search(r'id="pnnext"', webpage):
50 res['entries'] = entries[:n]
51 return res