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https://github.com/searxng/searxng.git
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[mod] improve implementation of presearch engine
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
Markus Heiser
Markus Heiser
parent
23582aac5c
commit
44392bd436
@ -1,6 +1,20 @@
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# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""Presearch (general, images, videos, news)
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.. hint::
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The results in the video category are most often links to pages that contain
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a video, for instance many links from preasearch's video category link
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content from facebook (aka Meta) or Twitter (aka X). Since these are not
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real links to video streams SearXNG can't use the video template for this and
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if SearXNG can't use this template, then the user doesn't want to see these
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hits in the videos category.
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TL;DR; by default presearch's video category is placed into categories::
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categories: [general, web]
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"""
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from urllib.parse import urlencode
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@ -19,12 +33,18 @@ paging = True
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time_range_support = True
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categories = ["general", "web"] # general, images, videos, news
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search_type = "search" # must be any of "search", "images", "videos", "news"
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search_type = "search"
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"""must be any of ``search``, ``images``, ``videos``, ``news``"""
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base_url = "https://presearch.com"
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safesearch_map = {0: 'false', 1: 'true', 2: 'true'}
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def init(_):
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if search_type not in ['search', 'images', 'videos', 'news']:
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raise ValueError(f'presearch search_type: {search_type}')
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def _get_request_id(query, page, time_range, safesearch):
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args = {
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"q": query,
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@ -38,7 +58,7 @@ def _get_request_id(query, page, time_range, safesearch):
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'User-Agent': gen_useragent(),
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'Cookie': f"b=1;presearch_session=;use_safe_search={safesearch_map[safesearch]}",
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}
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resp_text = get(url, headers=headers).text
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resp_text = get(url, headers=headers).text # type: ignore
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for line in resp_text.split("\n"):
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if "window.searchId = " in line:
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@ -47,11 +67,6 @@ def _get_request_id(query, page, time_range, safesearch):
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return None
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def _is_valid_img_src(url):
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# in some cases, the image url is a base64 encoded string, which has to be skipped
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return "https://" in url
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def request(query, params):
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request_id = _get_request_id(query, params["pageno"], params["time_range"], params["safesearch"])
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@ -61,42 +76,105 @@ def request(query, params):
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return params
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def response(resp):
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def _strip_leading_strings(text):
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for x in ['wikipedia', 'google']:
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if text.lower().endswith(x):
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text = text[: -len(x)]
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return text.strip()
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def parse_search_query(json_results):
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results = []
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json = resp.json()
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json_results = []
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if search_type == "search":
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json_results = json['results'].get('standardResults', [])
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else:
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json_results = json.get(search_type, [])
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for json_result in json_results:
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for item in json_results.get('specialSections', {}).get('topStoriesCompact', {}).get('data', []):
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result = {
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'url': json_result['link'],
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'title': json_result['title'],
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'content': html_to_text(json_result.get('description', '')),
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'url': item['link'],
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'title': item['title'],
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'img_src': item['image'],
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'content': '',
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'metadata': item.get('source'),
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}
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if search_type == "images":
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result['template'] = 'images.html'
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if not _is_valid_img_src(json_result['image']):
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continue
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result['img_src'] = json_result['image']
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if _is_valid_img_src(json_result['thumbnail']):
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result['thumbnail'] = json_result['thumbnail']
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elif search_type == "videos":
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result['template'] = 'videos.html'
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if _is_valid_img_src(json_result['image']):
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result['thumbnail'] = json_result['image']
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result['duration'] = json_result['duration']
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result['length'] = json_result['duration']
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results.append(result)
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for item in json_results.get('standardResults', []):
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result = {
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'url': item['link'],
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'title': item['title'],
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'content': html_to_text(item['description']),
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}
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results.append(result)
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info = json_results.get('infoSection', {}).get('data')
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if info:
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attributes = []
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for item in info.get('about', []):
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label, value = html_to_text(item).split(':', 1)
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value = _strip_leading_strings(value)
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attributes.append({'label': label, 'value': value})
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content = []
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for item in [info['subtitle'], info['description']]:
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item = _strip_leading_strings(html_to_text(item))
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if item:
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content.append(item)
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results.append(
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{
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'infobox': info['title'],
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'id': info['title'],
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'img_src': info.get('image'),
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'content': ' | '.join(content),
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'attributes': attributes,
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}
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)
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return results
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def response(resp):
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results = []
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json_resp = resp.json()
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if search_type == 'search':
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results = parse_search_query(json_resp['results'])
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elif search_type == 'images':
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for item in json_resp['images']:
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results.append(
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{
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'template': 'images.html',
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'title': item['title'],
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'url': item['link'],
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'img_src': item['image'],
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'thumbnail_src': item['thumbnail'],
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}
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)
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elif search_type == 'videos':
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# The results in the video category are most often links to pages that contain
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# a video and not to a video stream --> SearXNG can't use the video template.
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for item in json_resp['videos']:
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metadata = [x for x in [item.get('description'), item.get('duration')] if x]
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results.append(
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{
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'title': item['title'],
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'url': item['link'],
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'content': '',
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'metadata': ' / '.join(metadata),
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'img_src': item.get('image'),
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}
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)
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elif search_type == 'news':
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for item in json_resp['news']:
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metadata = [x for x in [item.get('source'), item.get('time')] if x]
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results.append(
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{
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'title': item['title'],
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'url': item['link'],
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'content': item['description'],
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'metadata': ' / '.join(metadata),
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'img_src': item.get('image'),
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}
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)
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return results
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@ -1295,6 +1295,7 @@ engines:
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search_type: search
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categories: [general, web]
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shortcut: ps
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disabled: true
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- name: presearch images
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engine: presearch
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@ -1307,7 +1308,7 @@ engines:
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- name: presearch videos
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engine: presearch
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search_type: videos
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categories: [videos, web]
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categories: [general, web]
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timeout: 4.0
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shortcut: psvid
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disabled: true
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