[mod] xpath, 1337x, acgsou, apkmirror, archlinux, arxiv: use eval_xpath_* functions

searx/engines/1337x.py

@@ -1,6 +1,6 @@
 from urllib.parse import quote, urljoin
 from lxml import html
-from searx.utils import extract_text, get_torrent_size
+from searx.utils import extract_text, get_torrent_size, eval_xpath, eval_xpath_list, eval_xpath_getindex
 
 
 url = 'https://1337x.to/'
@@ -20,12 +20,12 @@ def response(resp):
 
     dom = html.fromstring(resp.text)
 
-    for result in dom.xpath('//table[contains(@class, "table-list")]/tbody//tr'):
-        href = urljoin(url, result.xpath('./td[contains(@class, "name")]/a[2]/@href')[0])
-        title = extract_text(result.xpath('./td[contains(@class, "name")]/a[2]'))
-        seed = extract_text(result.xpath('.//td[contains(@class, "seeds")]'))
-        leech = extract_text(result.xpath('.//td[contains(@class, "leeches")]'))
-        filesize_info = extract_text(result.xpath('.//td[contains(@class, "size")]/text()'))
+    for result in eval_xpath_list(dom, '//table[contains(@class, "table-list")]/tbody//tr'):
+        href = urljoin(url, eval_xpath_getindex(result, './td[contains(@class, "name")]/a[2]/@href', 0))
+        title = extract_text(eval_xpath(result, './td[contains(@class, "name")]/a[2]'))
+        seed = extract_text(eval_xpath(result, './/td[contains(@class, "seeds")]'))
+        leech = extract_text(eval_xpath(result, './/td[contains(@class, "leeches")]'))
+        filesize_info = extract_text(eval_xpath(result, './/td[contains(@class, "size")]/text()'))
         filesize, filesize_multiplier = filesize_info.split()
         filesize = get_torrent_size(filesize, filesize_multiplier)
 

searx/engines/acgsou.py

@@ -11,7 +11,7 @@
 
 from urllib.parse import urlencode
 from lxml import html
-from searx.utils import extract_text, get_torrent_size
+from searx.utils import extract_text, get_torrent_size, eval_xpath_list, eval_xpath_getindex
 
 # engine dependent config
 categories = ['files', 'images', 'videos', 'music']
@@ -37,29 +37,26 @@ def request(query, params):
 def response(resp):
     results = []
     dom = html.fromstring(resp.text)
-    for result in dom.xpath(xpath_results):
+    for result in eval_xpath_list(dom, xpath_results):
         # defaults
         filesize = 0
         magnet_link = "magnet:?xt=urn:btih:{}&tr=http://tracker.acgsou.com:2710/announce"
 
-        try:
-            category = extract_text(result.xpath(xpath_category)[0])
-        except:
-            pass
-
-        page_a = result.xpath(xpath_title)[0]
+        category = extract_text(eval_xpath_getindex(result, xpath_category, 0, default=[]))
+        page_a = eval_xpath_getindex(result, xpath_title, 0)
         title = extract_text(page_a)
         href = base_url + page_a.attrib.get('href')
 
         magnet_link = magnet_link.format(page_a.attrib.get('href')[5:-5])
 
-        try:
-            filesize_info = result.xpath(xpath_filesize)[0]
-            filesize = filesize_info[:-2]
-            filesize_multiplier = filesize_info[-2:]
-            filesize = get_torrent_size(filesize, filesize_multiplier)
-        except:
-            pass
+        filesize_info = eval_xpath_getindex(result, xpath_filesize, 0, default=None)
+        if filesize_info:
+            try:
+                filesize = filesize_info[:-2]
+                filesize_multiplier = filesize_info[-2:]
+                filesize = get_torrent_size(filesize, filesize_multiplier)
+            except:
+                pass
         # I didn't add download/seed/leech count since as I figured out they are generated randomly everytime
         content = 'Category: "{category}".'
         content = content.format(category=category)

searx/engines/apkmirror.py

@@ -11,7 +11,7 @@
 
 from urllib.parse import urlencode
 from lxml import html
-from searx.utils import extract_text
+from searx.utils import extract_text, eval_xpath_list, eval_xpath_getindex
 
 
 # engine dependent config
@@ -42,12 +42,13 @@ def response(resp):
     dom = html.fromstring(resp.text)
 
     # parse results
-    for result in dom.xpath('.//div[@id="content"]/div[@class="listWidget"]/div[@class="appRow"]'):
+    for result in eval_xpath_list(dom, './/div[@id="content"]/div[@class="listWidget"]/div[@class="appRow"]'):
 
-        link = result.xpath('.//h5/a')[0]
+        link = eval_xpath_getindex(result, './/h5/a', 0)
         url = base_url + link.attrib.get('href') + '#downloads'
         title = extract_text(link)
-        thumbnail_src = base_url + result.xpath('.//img')[0].attrib.get('src').replace('&w=32&h=32', '&w=64&h=64')
+        thumbnail_src = base_url\
+            + eval_xpath_getindex(result, './/img', 0).attrib.get('src').replace('&w=32&h=32', '&w=64&h=64')
 
         res = {
             'url': url,

searx/engines/archlinux.py

@@ -13,7 +13,7 @@
 
 from urllib.parse import urlencode, urljoin
 from lxml import html
-from searx.utils import extract_text
+from searx.utils import extract_text, eval_xpath_list, eval_xpath_getindex
 
 # engine dependent config
 categories = ['it']
@@ -131,8 +131,8 @@ def response(resp):
     dom = html.fromstring(resp.text)
 
     # parse results
-    for result in dom.xpath(xpath_results):
-        link = result.xpath(xpath_link)[0]
+    for result in eval_xpath_list(dom, xpath_results):
+        link = eval_xpath_getindex(result, xpath_link, 0)
         href = urljoin(base_url, link.attrib.get('href'))
         title = extract_text(link)
 

searx/engines/arxiv.py

@@ -13,6 +13,7 @@
 
 from lxml import html
 from datetime import datetime
+from searx.utils import eval_xpath_list, eval_xpath_getindex
 
 
 categories = ['science']
@@ -42,29 +43,26 @@ def response(resp):
     results = []
 
     dom = html.fromstring(resp.content)
-    search_results = dom.xpath('//entry')
 
-    for entry in search_results:
-        title = entry.xpath('.//title')[0].text
+    for entry in eval_xpath_list(dom, '//entry'):
+        title = eval_xpath_getindex(entry, './/title', 0).text
 
-        url = entry.xpath('.//id')[0].text
+        url = eval_xpath_getindex(entry, './/id', 0).text
 
         content_string = '{doi_content}{abstract_content}'
 
-        abstract = entry.xpath('.//summary')[0].text
+        abstract = eval_xpath_getindex(entry, './/summary', 0).text
 
         #  If a doi is available, add it to the snipppet
-        try:
-            doi_content = entry.xpath('.//link[@title="doi"]')[0].text
-            content = content_string.format(doi_content=doi_content, abstract_content=abstract)
-        except:
-            content = content_string.format(doi_content="", abstract_content=abstract)
+        doi_element = eval_xpath_getindex(entry, './/link[@title="doi"]', 0, default=None)
+        doi_content = doi_element.text if doi_element is not None else ''
+        content = content_string.format(doi_content=doi_content, abstract_content=abstract)
 
         if len(content) > 300:
             content = content[0:300] + "..."
         # TODO: center snippet on query term
 
-        publishedDate = datetime.strptime(entry.xpath('.//published')[0].text, '%Y-%m-%dT%H:%M:%SZ')
+        publishedDate = datetime.strptime(eval_xpath_getindex(entry, './/published', 0).text, '%Y-%m-%dT%H:%M:%SZ')
 
         res_dict = {'url': url,
                     'title': title,

searx/engines/xpath.py

@@ -1,6 +1,6 @@
 from lxml import html
 from urllib.parse import urlencode
-from searx.utils import extract_text, extract_url, eval_xpath
+from searx.utils import extract_text, extract_url, eval_xpath, eval_xpath_list
 
 search_url = None
 url_xpath = None
@@ -42,21 +42,22 @@ def response(resp):
     is_onion = True if 'onions' in categories else False
 
     if results_xpath:
-        for result in eval_xpath(dom, results_xpath):
-            url = extract_url(eval_xpath(result, url_xpath), search_url)
-            title = extract_text(eval_xpath(result, title_xpath))
-            content = extract_text(eval_xpath(result, content_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, min_len=1))
             tmp_result = {'url': url, 'title': title, 'content': content}
 
             # add thumbnail if available
             if thumbnail_xpath:
-                thumbnail_xpath_result = eval_xpath(result, thumbnail_xpath)
+                thumbnail_xpath_result = eval_xpath_list(result, thumbnail_xpath)
                 if len(thumbnail_xpath_result) > 0:
                     tmp_result['img_src'] = extract_url(thumbnail_xpath_result, search_url)
 
             # add alternative cached url if available
             if cached_xpath:
-                tmp_result['cached_url'] = cached_url + extract_text(result.xpath(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
@@ -66,19 +67,19 @@ def response(resp):
         if cached_xpath:
             for url, title, content, cached in zip(
                 (extract_url(x, search_url) for
-                 x in dom.xpath(url_xpath)),
-                map(extract_text, dom.xpath(title_xpath)),
-                map(extract_text, dom.xpath(content_xpath)),
-                map(extract_text, dom.xpath(cached_xpath))
+                 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 dom.xpath(url_xpath)),
-                map(extract_text, dom.xpath(title_xpath)),
-                map(extract_text, dom.xpath(content_xpath))
+                 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})