Move GoogleSearchIE into its own file

youtube_dl/extractor/google.py

@@ -0,0 +1,39 @@
+import itertools
+import re
+
+from .common import SearchInfoExtractor
+from ..utils import (
+    compat_urllib_parse,
+)
+
+
+class GoogleSearchIE(SearchInfoExtractor):
+    """Information Extractor for Google Video search queries."""
+    _MORE_PAGES_INDICATOR = r'id="pnnext" class="pn"'
+    _MAX_RESULTS = 1000
+    IE_NAME = u'video.google:search'
+    _SEARCH_KEY = 'gvsearch'
+
+    def _get_n_results(self, query, n):
+        """Get a specified number of results for a query"""
+
+        res = {
+            '_type': 'playlist',
+            'id': query,
+            'entries': []
+        }
+
+        for pagenum in itertools.count(1):
+            result_url = u'http://www.google.com/search?tbm=vid&q=%s&start=%s&hl=en' % (compat_urllib_parse.quote_plus(query), pagenum*10)
+            webpage = self._download_webpage(result_url, u'gvsearch:' + query,
+                                             note='Downloading result page ' + str(pagenum))
+
+            for mobj in re.finditer(r'<h3 class="r"><a href="([^"]+)"', webpage):
+                e = {
+                    '_type': 'url',
+                    'url': mobj.group(1)
+                }
+                res['entries'].append(e)
+
+            if (pagenum * 10 > n) or not re.search(self._MORE_PAGES_INDICATOR, webpage):
+                return res