searx.engines.xpath Namespace Reference

Functions
	request (query, params)
	response (resp)

Variables
	search_url = None
str	lang_all = 'en'
list	no_result_for_http_status = []
int	soft_max_redirects = 0
str	results_xpath = ''
	url_xpath = None
	content_xpath = None
	title_xpath = None
bool	thumbnail_xpath = False
str	suggestion_xpath = ''
str	cached_xpath = ''
str	cached_url = ''
dict	cookies = {}
dict	headers = {}
bool	paging = False
int	page_size = 1
int	first_page_num = 1
bool	time_range_support = False
str	time_range_url = '&hours={time_range_val}'
dict	time_range_map
bool	safe_search_support = False
dict	safe_search_map = {0: '&filter=none', 1: '&filter=moderate', 2: '&filter=strict'}

Detailed Description

The XPath engine is a *generic* engine with which it is possible to configure
engines in the settings.

.. _XPath selector: https://quickref.me/xpath.html#xpath-selectors

Configuration
=============

Request:

- :py:obj:`search_url`
- :py:obj:`lang_all`
- :py:obj:`soft_max_redirects`
- :py:obj:`cookies`
- :py:obj:`headers`

Paging:

- :py:obj:`paging`
- :py:obj:`page_size`
- :py:obj:`first_page_num`

Time Range:

- :py:obj:`time_range_support`
- :py:obj:`time_range_url`
- :py:obj:`time_range_map`

Safe-Search:

- :py:obj:`safe_search_support`
- :py:obj:`safe_search_map`

Response:

- :py:obj:`no_result_for_http_status`

`XPath selector`_:

- :py:obj:`results_xpath`
- :py:obj:`url_xpath`
- :py:obj:`title_xpath`
- :py:obj:`content_xpath`
- :py:obj:`thumbnail_xpath`
- :py:obj:`suggestion_xpath`


Example
=======

Here is a simple example of a XPath engine configured in the :ref:`settings
engine` section, further read :ref:`engines-dev`.

.. code:: yaml

  - name : bitbucket
    engine : xpath
    paging : True
    search_url : https://bitbucket.org/repo/all/{pageno}?name={query}
    url_xpath : //article[@class="repo-summary"]//a[@class="repo-link"]/@href
    title_xpath : //article[@class="repo-summary"]//a[@class="repo-link"]
    content_xpath : //article[@class="repo-summary"]/p

Implementations
===============

Function Documentation

request()

searx.engines.xpath.request	(		query,
			params )

Build request parameters (see :ref:`engine request`).

Definition at line 212 of file xpath.py.

def request(query, params):
    '''Build request parameters (see :ref:`engine request`).'''
    lang = lang_all
    if params['language'] != 'all':
        lang = params['language'][:2]
 
    time_range = ''
    if params.get('time_range'):
        time_range_val = time_range_map.get(params.get('time_range'))
        time_range = time_range_url.format(time_range_val=time_range_val)
 
    safe_search = ''
    if params['safesearch']:
        safe_search = safe_search_map[params['safesearch']]
 
    fargs = {
        'query': urlencode({'q': query})[2:],
        'lang': lang,
        'pageno': (params['pageno'] - 1) * page_size + first_page_num,
        'time_range': time_range,
        'safe_search': safe_search,
    }
 
    params['cookies'].update(cookies)
    params['headers'].update(headers)
 
    params['url'] = search_url.format(**fargs)
    params['soft_max_redirects'] = soft_max_redirects
 
    params['raise_for_httperror'] = False
 
    return params
 
 

response()

searx.engines.xpath.response

(

resp

)

Scrap *results* from the response (see :ref:`engine results`).

Definition at line 246 of file xpath.py.

def response(resp):  # pylint: disable=too-many-branches
    '''Scrap *results* from the response (see :ref:`engine results`).'''
    if no_result_for_http_status and resp.status_code in no_result_for_http_status:
        return []
 
    raise_for_httperror(resp)
 
    results = []
    dom = html.fromstring(resp.text)
    is_onion = 'onions' in categories
 
    if results_xpath:
        for result in eval_xpath_list(dom, results_xpath):
 
            url = extract_url(eval_xpath_list(result, url_xpath, min_len=1), search_url)
            title = extract_text(eval_xpath_list(result, title_xpath, min_len=1))
            content = extract_text(eval_xpath_list(result, content_xpath))
            tmp_result = {'url': url, 'title': title, 'content': content}
 
            # add thumbnail if available
            if thumbnail_xpath:
                thumbnail_xpath_result = eval_xpath_list(result, thumbnail_xpath)
                if len(thumbnail_xpath_result) > 0:
                    tmp_result['thumbnail'] = extract_url(thumbnail_xpath_result, search_url)
 
            # add alternative cached url if available
            if cached_xpath:
                tmp_result['cached_url'] = cached_url + extract_text(eval_xpath_list(result, cached_xpath, min_len=1))
 
            if is_onion:
                tmp_result['is_onion'] = True
 
            results.append(tmp_result)
 
    else:
        if cached_xpath:
            for url, title, content, cached in zip(
                (extract_url(x, search_url) for x in eval_xpath_list(dom, url_xpath)),
                map(extract_text, eval_xpath_list(dom, title_xpath)),
                map(extract_text, eval_xpath_list(dom, content_xpath)),
                map(extract_text, eval_xpath_list(dom, cached_xpath)),
            ):
                results.append(
                    {
                        'url': url,
                        'title': title,
                        'content': content,
                        'cached_url': cached_url + cached,
                        'is_onion': is_onion,
                    }
                )
        else:
            for url, title, content in zip(
                (extract_url(x, search_url) for x in eval_xpath_list(dom, url_xpath)),
                map(extract_text, eval_xpath_list(dom, title_xpath)),
                map(extract_text, eval_xpath_list(dom, content_xpath)),
            ):
                results.append({'url': url, 'title': title, 'content': content, 'is_onion': is_onion})
 
    if suggestion_xpath:
        for suggestion in eval_xpath(dom, suggestion_xpath):
            results.append({'suggestion': extract_text(suggestion)})
 
    logger.debug("found %s results", len(results))
    return results

Variable Documentation

cached_url

str searx.engines.xpath.cached_url = ''

Definition at line 144 of file xpath.py.

cached_xpath

str searx.engines.xpath.cached_xpath = ''

Definition at line 143 of file xpath.py.

content_xpath

searx.engines.xpath.content_xpath = None

Definition at line 131 of file xpath.py.

cookies

dict searx.engines.xpath.cookies = {}

Definition at line 146 of file xpath.py.

first_page_num

int searx.engines.xpath.first_page_num = 1

Definition at line 161 of file xpath.py.

headers

dict searx.engines.xpath.headers = {}

Definition at line 150 of file xpath.py.

lang_all

str searx.engines.xpath.lang_all = 'en'

Definition at line 109 of file xpath.py.

no_result_for_http_status

list searx.engines.xpath.no_result_for_http_status = []

Definition at line 114 of file xpath.py.

page_size

int searx.engines.xpath.page_size = 1

Definition at line 157 of file xpath.py.

paging

bool searx.engines.xpath.paging = False

Definition at line 154 of file xpath.py.

results_xpath

str searx.engines.xpath.results_xpath = ''

Definition at line 125 of file xpath.py.

safe_search_map

dict searx.engines.xpath.safe_search_map = {0: '&filter=none', 1: '&filter=moderate', 2: '&filter=strict'}

Definition at line 198 of file xpath.py.

safe_search_support

bool searx.engines.xpath.safe_search_support = False

Definition at line 195 of file xpath.py.

search_url

searx.engines.xpath.search_url = None

Definition at line 76 of file xpath.py.

soft_max_redirects

int searx.engines.xpath.soft_max_redirects = 0

Definition at line 122 of file xpath.py.

suggestion_xpath

str searx.engines.xpath.suggestion_xpath = ''

Definition at line 140 of file xpath.py.

thumbnail_xpath

bool searx.engines.xpath.thumbnail_xpath = False

Definition at line 137 of file xpath.py.

time_range_map

dict searx.engines.xpath.time_range_map

Initial value:

=  {
    'day': 24,
    'week': 24 * 7,
    'month': 24 * 30,
    'year': 24 * 365,
}

Definition at line 177 of file xpath.py.

time_range_support

bool searx.engines.xpath.time_range_support = False

Definition at line 164 of file xpath.py.

time_range_url

str searx.engines.xpath.time_range_url = '&hours={time_range_val}'

Definition at line 167 of file xpath.py.

title_xpath

searx.engines.xpath.title_xpath = None

Definition at line 134 of file xpath.py.

url_xpath

searx.engines.xpath.url_xpath = None

Definition at line 128 of file xpath.py.