forked from zaclys/searxng
137 lines
4.0 KiB
Python
137 lines
4.0 KiB
Python
# -*- coding: utf-8 -*-
|
|
import os
|
|
import csv
|
|
import hashlib
|
|
import hmac
|
|
import re
|
|
import inspect
|
|
|
|
from io import StringIO
|
|
from codecs import getincrementalencoder
|
|
|
|
from searx import logger
|
|
|
|
|
|
VALID_LANGUAGE_CODE = re.compile(r'^[a-z]{2,3}(-[a-zA-Z]{2})?$')
|
|
|
|
logger = logger.getChild('webutils')
|
|
|
|
|
|
class UnicodeWriter:
|
|
"""
|
|
A CSV writer which will write rows to CSV file "f",
|
|
which is encoded in the given encoding.
|
|
"""
|
|
|
|
def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
|
|
# Redirect output to a queue
|
|
self.queue = StringIO()
|
|
self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
|
|
self.stream = f
|
|
self.encoder = getincrementalencoder(encoding)()
|
|
|
|
def writerow(self, row):
|
|
self.writer.writerow(row)
|
|
# Fetch UTF-8 output from the queue ...
|
|
data = self.queue.getvalue()
|
|
data = data.strip('\x00')
|
|
# ... and reencode it into the target encoding
|
|
data = self.encoder.encode(data)
|
|
# write to the target stream
|
|
self.stream.write(data.decode())
|
|
# empty queue
|
|
self.queue.truncate(0)
|
|
|
|
def writerows(self, rows):
|
|
for row in rows:
|
|
self.writerow(row)
|
|
|
|
|
|
def get_themes(templates_path):
|
|
"""Returns available themes list."""
|
|
themes = os.listdir(templates_path)
|
|
if '__common__' in themes:
|
|
themes.remove('__common__')
|
|
return themes
|
|
|
|
|
|
def get_static_files(static_path):
|
|
static_files = set()
|
|
static_path_length = len(static_path) + 1
|
|
for directory, _, files in os.walk(static_path):
|
|
for filename in files:
|
|
f = os.path.join(directory[static_path_length:], filename)
|
|
static_files.add(f)
|
|
return static_files
|
|
|
|
|
|
def get_result_templates(templates_path):
|
|
result_templates = set()
|
|
templates_path_length = len(templates_path) + 1
|
|
for directory, _, files in os.walk(templates_path):
|
|
if directory.endswith('result_templates'):
|
|
for filename in files:
|
|
f = os.path.join(directory[templates_path_length:], filename)
|
|
result_templates.add(f)
|
|
return result_templates
|
|
|
|
|
|
def new_hmac(secret_key, url):
|
|
return hmac.new(secret_key.encode(), url, hashlib.sha256).hexdigest()
|
|
|
|
|
|
def is_hmac_of(secret_key, value, hmac_to_check):
|
|
hmac_of_value = new_hmac(secret_key, value)
|
|
return len(hmac_of_value) == len(hmac_to_check) and hmac.compare_digest(hmac_of_value, hmac_to_check)
|
|
|
|
|
|
def prettify_url(url, max_length=74):
|
|
if len(url) > max_length:
|
|
chunk_len = int(max_length / 2 + 1)
|
|
return '{0}[...]{1}'.format(url[:chunk_len], url[-chunk_len:])
|
|
else:
|
|
return url
|
|
|
|
|
|
def highlight_content(content, query):
|
|
|
|
if not content:
|
|
return None
|
|
# ignoring html contents
|
|
# TODO better html content detection
|
|
if content.find('<') != -1:
|
|
return content
|
|
|
|
if content.lower().find(query.lower()) > -1:
|
|
query_regex = '({0})'.format(re.escape(query))
|
|
content = re.sub(query_regex, '<span class="highlight">\\1</span>', content, flags=re.I | re.U)
|
|
else:
|
|
regex_parts = []
|
|
for chunk in query.split():
|
|
chunk = chunk.replace('"', '')
|
|
if len(chunk) == 0:
|
|
continue
|
|
elif len(chunk) == 1:
|
|
regex_parts.append('\\W+{0}\\W+'.format(re.escape(chunk)))
|
|
else:
|
|
regex_parts.append('{0}'.format(re.escape(chunk)))
|
|
query_regex = '({0})'.format('|'.join(regex_parts))
|
|
content = re.sub(query_regex, '<span class="highlight">\\1</span>', content, flags=re.I | re.U)
|
|
|
|
return content
|
|
|
|
|
|
def is_flask_run_cmdline():
|
|
"""Check if the application was started using "flask run" command line
|
|
|
|
Inspect the callstack.
|
|
See https://github.com/pallets/flask/blob/master/src/flask/__main__.py
|
|
|
|
Returns:
|
|
bool: True if the application was started using "flask run".
|
|
"""
|
|
frames = inspect.stack()
|
|
if len(frames) < 2:
|
|
return False
|
|
return frames[-2].filename.endswith('flask/cli.py')
|