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mirror of https://github.com/searxng/searxng.git synced 2024-11-05 04:40:11 +01:00

[mod] improve implementation of presearch engine

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
This commit is contained in:
Markus Heiser 2023-10-04 14:31:31 +02:00 committed by Markus Heiser
parent 23582aac5c
commit 44392bd436
2 changed files with 119 additions and 40 deletions

View File

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

View File

@ -1295,6 +1295,7 @@ engines:
search_type: search
categories: [general, web]
shortcut: ps
disabled: true
- name: presearch images
engine: presearch
@ -1307,7 +1308,7 @@ engines:
- name: presearch videos
engine: presearch
search_type: videos
categories: [videos, web]
categories: [general, web]
timeout: 4.0
shortcut: psvid
disabled: true