mirror of
https://github.com/searxng/searxng.git
synced 2024-11-04 20:30:11 +01:00
[mod] add searx/webutils.py
contains utility functions and classes used only by webapp.py
This commit is contained in:
parent
f9664037a6
commit
ad0758e52a
139
searx/utils.py
139
searx/utils.py
@ -1,27 +1,21 @@
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# -*- coding: utf-8 -*-
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import os
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import sys
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import csv
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import hashlib
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import hmac
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import re
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import json
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from codecs import getincrementalencoder
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from imp import load_source
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from numbers import Number
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from os.path import splitext, join
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from io import open, StringIO
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from io import open
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from random import choice
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from html.parser import HTMLParser
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from lxml.etree import XPath
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from babel.core import get_global
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from babel.dates import format_date
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from searx import settings
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from searx.version import VERSION_STRING
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from searx.languages import language_codes
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from searx import settings
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from searx import logger
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@ -50,33 +44,6 @@ def gen_useragent(os=None):
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return str(useragents['ua'].format(os=os or choice(useragents['os']), version=choice(useragents['versions'])))
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def highlight_content(content, query):
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if not content:
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return None
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# ignoring html contents
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# TODO better html content detection
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if content.find('<') != -1:
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return content
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if content.lower().find(query.lower()) > -1:
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query_regex = '({0})'.format(re.escape(query))
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content = re.sub(query_regex, '<span class="highlight">\\1</span>',
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content, flags=re.I | re.U)
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else:
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regex_parts = []
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for chunk in query.split():
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if len(chunk) == 1:
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regex_parts.append('\\W+{0}\\W+'.format(re.escape(chunk)))
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else:
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regex_parts.append('{0}'.format(re.escape(chunk)))
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query_regex = '({0})'.format('|'.join(regex_parts))
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content = re.sub(query_regex, '<span class="highlight">\\1</span>',
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content, flags=re.I | re.U)
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return content
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class HTMLTextExtractorException(Exception):
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pass
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@ -139,91 +106,6 @@ def html_to_text(html):
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return s.get_text()
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class UnicodeWriter:
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"""
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A CSV writer which will write rows to CSV file "f",
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which is encoded in the given encoding.
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"""
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def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
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# Redirect output to a queue
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self.queue = StringIO()
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self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
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self.stream = f
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self.encoder = getincrementalencoder(encoding)()
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def writerow(self, row):
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self.writer.writerow(row)
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# Fetch UTF-8 output from the queue ...
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data = self.queue.getvalue()
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data = data.strip('\x00')
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# ... and reencode it into the target encoding
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data = self.encoder.encode(data)
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# write to the target stream
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self.stream.write(data.decode())
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# empty queue
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self.queue.truncate(0)
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def writerows(self, rows):
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for row in rows:
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self.writerow(row)
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def get_resources_directory(searx_directory, subdirectory, resources_directory):
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if not resources_directory:
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resources_directory = os.path.join(searx_directory, subdirectory)
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if not os.path.isdir(resources_directory):
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raise Exception(resources_directory + " is not a directory")
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return resources_directory
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def get_themes(templates_path):
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"""Returns available themes list."""
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themes = os.listdir(templates_path)
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if '__common__' in themes:
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themes.remove('__common__')
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return themes
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def get_static_files(static_path):
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static_files = set()
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static_path_length = len(static_path) + 1
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for directory, _, files in os.walk(static_path):
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for filename in files:
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f = os.path.join(directory[static_path_length:], filename)
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static_files.add(f)
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return static_files
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def get_result_templates(templates_path):
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result_templates = set()
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templates_path_length = len(templates_path) + 1
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for directory, _, files in os.walk(templates_path):
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if directory.endswith('result_templates'):
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for filename in files:
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f = os.path.join(directory[templates_path_length:], filename)
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result_templates.add(f)
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return result_templates
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def format_date_by_locale(date, locale_string):
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# strftime works only on dates after 1900
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if date.year <= 1900:
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return date.isoformat().split('T')[0]
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if locale_string == 'all':
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locale_string = settings['ui']['default_locale'] or 'en_US'
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# to avoid crashing if locale is not supported by babel
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try:
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formatted_date = format_date(date, locale=locale_string)
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except:
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formatted_date = format_date(date, "YYYY-MM-dd")
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return formatted_date
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def dict_subset(d, properties):
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result = {}
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for k in properties:
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@ -232,14 +114,6 @@ def dict_subset(d, properties):
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return result
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def prettify_url(url, max_length=74):
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if len(url) > max_length:
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chunk_len = int(max_length / 2 + 1)
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return '{0}[...]{1}'.format(url[:chunk_len], url[-chunk_len:])
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else:
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return url
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# get element in list or default value
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def list_get(a_list, index, default=None):
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if len(a_list) > index:
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@ -383,17 +257,6 @@ def load_module(filename, module_dir):
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return module
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def new_hmac(secret_key, url):
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try:
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secret_key_bytes = bytes(secret_key, 'utf-8')
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except TypeError as err:
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if isinstance(secret_key, bytes):
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secret_key_bytes = secret_key
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else:
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raise err
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return hmac.new(secret_key_bytes, url, hashlib.sha256).hexdigest()
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def to_string(obj):
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if isinstance(obj, str):
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return obj
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@ -62,11 +62,12 @@ from searx.exceptions import SearxParameterException
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from searx.engines import (
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categories, engines, engine_shortcuts, get_engines_stats, initialize_engines
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)
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from searx.utils import (
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UnicodeWriter, highlight_content, html_to_text, get_resources_directory,
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get_static_files, get_result_templates, get_themes, gen_useragent,
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dict_subset, prettify_url, match_language
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from searx.webutils import (
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UnicodeWriter, highlight_content, get_resources_directory,
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get_static_files, get_result_templates, get_themes,
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prettify_url, new_hmac
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)
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from searx.utils import html_to_text, gen_useragent, dict_subset, match_language
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from searx.version import VERSION_STRING
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from searx.languages import language_codes as languages
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from searx.search import SearchWithPlugins, get_search_query_from_webapp
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@ -76,7 +77,6 @@ from searx.plugins import plugins
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from searx.plugins.oa_doi_rewrite import get_doi_resolver
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from searx.preferences import Preferences, ValidationException, LANGUAGE_CODES
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from searx.answerers import answerers
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from searx.utils import new_hmac
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# check if the pyopenssl package is installed.
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# It is needed for SSL connection without trouble, see #298
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127
searx/webutils.py
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127
searx/webutils.py
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@ -0,0 +1,127 @@
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# -*- coding: utf-8 -*-
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import os
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import csv
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import hashlib
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import hmac
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import re
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from io import StringIO
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from codecs import getincrementalencoder
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from searx import logger
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logger = logger.getChild('webutils')
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class UnicodeWriter:
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"""
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A CSV writer which will write rows to CSV file "f",
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which is encoded in the given encoding.
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"""
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def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
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# Redirect output to a queue
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self.queue = StringIO()
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self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
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self.stream = f
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self.encoder = getincrementalencoder(encoding)()
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def writerow(self, row):
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self.writer.writerow(row)
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# Fetch UTF-8 output from the queue ...
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data = self.queue.getvalue()
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data = data.strip('\x00')
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# ... and reencode it into the target encoding
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data = self.encoder.encode(data)
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# write to the target stream
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self.stream.write(data.decode())
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# empty queue
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self.queue.truncate(0)
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def writerows(self, rows):
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for row in rows:
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self.writerow(row)
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def get_resources_directory(searx_directory, subdirectory, resources_directory):
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if not resources_directory:
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resources_directory = os.path.join(searx_directory, subdirectory)
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if not os.path.isdir(resources_directory):
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raise Exception(resources_directory + " is not a directory")
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return resources_directory
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def get_themes(templates_path):
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"""Returns available themes list."""
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themes = os.listdir(templates_path)
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if '__common__' in themes:
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themes.remove('__common__')
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return themes
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def get_static_files(static_path):
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static_files = set()
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static_path_length = len(static_path) + 1
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for directory, _, files in os.walk(static_path):
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for filename in files:
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f = os.path.join(directory[static_path_length:], filename)
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static_files.add(f)
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return static_files
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def get_result_templates(templates_path):
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result_templates = set()
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templates_path_length = len(templates_path) + 1
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for directory, _, files in os.walk(templates_path):
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if directory.endswith('result_templates'):
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for filename in files:
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f = os.path.join(directory[templates_path_length:], filename)
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result_templates.add(f)
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return result_templates
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def new_hmac(secret_key, url):
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try:
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secret_key_bytes = bytes(secret_key, 'utf-8')
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except TypeError as err:
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if isinstance(secret_key, bytes):
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secret_key_bytes = secret_key
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else:
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raise err
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return hmac.new(secret_key_bytes, url, hashlib.sha256).hexdigest()
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def prettify_url(url, max_length=74):
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if len(url) > max_length:
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chunk_len = int(max_length / 2 + 1)
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return '{0}[...]{1}'.format(url[:chunk_len], url[-chunk_len:])
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else:
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return url
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def highlight_content(content, query):
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if not content:
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return None
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# ignoring html contents
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# TODO better html content detection
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if content.find('<') != -1:
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return content
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if content.lower().find(query.lower()) > -1:
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query_regex = '({0})'.format(re.escape(query))
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content = re.sub(query_regex, '<span class="highlight">\\1</span>',
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content, flags=re.I | re.U)
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else:
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regex_parts = []
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for chunk in query.split():
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if len(chunk) == 1:
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regex_parts.append('\\W+{0}\\W+'.format(re.escape(chunk)))
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else:
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regex_parts.append('{0}'.format(re.escape(chunk)))
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query_regex = '({0})'.format('|'.join(regex_parts))
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content = re.sub(query_regex, '<span class="highlight">\\1</span>',
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content, flags=re.I | re.U)
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return content
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@ -1,5 +1,4 @@
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# -*- coding: utf-8 -*-
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import mock
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from searx.testing import SearxTestCase
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from searx import utils
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@ -16,25 +15,6 @@ class TestUtils(SearxTestCase):
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self.assertIsNotNone(utils.searx_useragent())
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self.assertTrue(utils.searx_useragent().startswith('searx'))
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def test_highlight_content(self):
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self.assertEqual(utils.highlight_content(0, None), None)
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self.assertEqual(utils.highlight_content(None, None), None)
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self.assertEqual(utils.highlight_content('', None), None)
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self.assertEqual(utils.highlight_content(False, None), None)
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contents = [
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'<html></html>'
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'not<'
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]
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for content in contents:
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self.assertEqual(utils.highlight_content(content, None), content)
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content = 'a'
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query = 'test'
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self.assertEqual(utils.highlight_content(content, query), content)
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query = 'a test'
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self.assertEqual(utils.highlight_content(content, query), content)
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def test_html_to_text(self):
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html = """
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<a href="/testlink" class="link_access_account">
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@ -56,15 +36,6 @@ class TestUtils(SearxTestCase):
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html = '<p><b>Lorem ipsum</i>dolor sit amet</p>'
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self.assertEqual(utils.html_to_text(html), "Lorem ipsum")
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def test_prettify_url(self):
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data = (('https://searx.me/', 'https://searx.me/'),
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('https://searx.me/ű', 'https://searx.me/ű'),
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('https://searx.me/' + (100 * 'a'), 'https://searx.me/[...]aaaaaaaaaaaaaaaaa'),
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('https://searx.me/' + (100 * 'ű'), 'https://searx.me/[...]űűűűűűűűűűűűűűűűű'))
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for test_url, expected in data:
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self.assertEqual(utils.prettify_url(test_url, max_length=32), expected)
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def test_match_language(self):
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self.assertEqual(utils.match_language('es', ['es']), 'es')
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self.assertEqual(utils.match_language('es', [], fallback='fallback'), 'fallback')
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@ -124,33 +95,3 @@ class TestHTMLTextExtractor(SearxTestCase):
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text = '<p><b>Lorem ipsum</i>dolor sit amet</p>'
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with self.assertRaises(utils.HTMLTextExtractorException):
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self.html_text_extractor.feed(text)
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class TestUnicodeWriter(SearxTestCase):
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def setUp(self):
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self.unicode_writer = utils.UnicodeWriter(mock.MagicMock())
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def test_write_row(self):
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row = [1, 2, 3]
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self.assertEqual(self.unicode_writer.writerow(row), None)
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def test_write_rows(self):
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self.unicode_writer.writerow = mock.MagicMock()
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rows = [1, 2, 3]
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self.unicode_writer.writerows(rows)
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self.assertEqual(self.unicode_writer.writerow.call_count, len(rows))
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class TestNewHmac(SearxTestCase):
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def test_bytes(self):
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for secret_key in ['secret', b'secret', 1]:
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if secret_key == 1:
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with self.assertRaises(TypeError):
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utils.new_hmac(secret_key, b'http://example.com')
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continue
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res = utils.new_hmac(secret_key, b'http://example.com')
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self.assertEqual(
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res,
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'23e2baa2404012a5cc8e4a18b4aabf0dde4cb9b56f679ddc0fd6d7c24339d819')
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65
tests/unit/test_webutils.py
Normal file
65
tests/unit/test_webutils.py
Normal file
@ -0,0 +1,65 @@
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# -*- coding: utf-8 -*-
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import mock
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from searx.testing import SearxTestCase
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from searx import webutils
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class TestWebUtils(SearxTestCase):
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def test_prettify_url(self):
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data = (('https://searx.me/', 'https://searx.me/'),
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('https://searx.me/ű', 'https://searx.me/ű'),
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('https://searx.me/' + (100 * 'a'), 'https://searx.me/[...]aaaaaaaaaaaaaaaaa'),
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('https://searx.me/' + (100 * 'ű'), 'https://searx.me/[...]űűűűűűűűűűűűűűűűű'))
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for test_url, expected in data:
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self.assertEqual(webutils.prettify_url(test_url, max_length=32), expected)
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def test_highlight_content(self):
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self.assertEqual(webutils.highlight_content(0, None), None)
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self.assertEqual(webutils.highlight_content(None, None), None)
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self.assertEqual(webutils.highlight_content('', None), None)
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self.assertEqual(webutils.highlight_content(False, None), None)
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contents = [
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'<html></html>'
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'not<'
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]
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for content in contents:
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self.assertEqual(webutils.highlight_content(content, None), content)
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content = 'a'
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query = 'test'
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self.assertEqual(webutils.highlight_content(content, query), content)
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query = 'a test'
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self.assertEqual(webutils.highlight_content(content, query), content)
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class TestUnicodeWriter(SearxTestCase):
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def setUp(self):
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self.unicode_writer = webutils.UnicodeWriter(mock.MagicMock())
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def test_write_row(self):
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row = [1, 2, 3]
|
||||
self.assertEqual(self.unicode_writer.writerow(row), None)
|
||||
|
||||
def test_write_rows(self):
|
||||
self.unicode_writer.writerow = mock.MagicMock()
|
||||
rows = [1, 2, 3]
|
||||
self.unicode_writer.writerows(rows)
|
||||
self.assertEqual(self.unicode_writer.writerow.call_count, len(rows))
|
||||
|
||||
|
||||
class TestNewHmac(SearxTestCase):
|
||||
|
||||
def test_bytes(self):
|
||||
for secret_key in ['secret', b'secret', 1]:
|
||||
if secret_key == 1:
|
||||
with self.assertRaises(TypeError):
|
||||
webutils.new_hmac(secret_key, b'http://example.com')
|
||||
continue
|
||||
res = webutils.new_hmac(secret_key, b'http://example.com')
|
||||
self.assertEqual(
|
||||
res,
|
||||
'23e2baa2404012a5cc8e4a18b4aabf0dde4cb9b56f679ddc0fd6d7c24339d819')
|
Loading…
Reference in New Issue
Block a user