1 files changed, 0 insertions, 161 deletions
diff --git a/utils/fetch_external_bangs.py b/utils/fetch_external_bangs.py
deleted file mode 100755
index ba6f51e7a..000000000
--- a/utils/fetch_external_bangs.py
+++ /dev/null
@@ -1,161 +0,0 @@
-#!/usr/bin/env python
-"""
-Update searx/data/external_bangs.json using the duckduckgo bangs.
-
-https://duckduckgo.com/newbang loads
-* a javascript which provides the bang version ( https://duckduckgo.com/bv1.js )
-* a JSON file which contains the bangs ( https://duckduckgo.com/bang.v260.js for example )
-
-This script loads the javascript, then the bangs.
-
-The javascript URL may change in the future ( for example https://duckduckgo.com/bv2.js ),
-but most probably it will requires to update RE_BANG_VERSION
-"""
-# pylint: disable=C0116
-
-import sys
-import json
-import re
-from os.path import realpath, dirname, join
-
-import requests
-
-# set path
-sys.path.append(realpath(dirname(realpath(__file__)) + '/../'))
-
-from searx import searx_dir  # pylint: disable=E0401 C0413
-
-
-# from https://duckduckgo.com/newbang
-URL_BV1 = 'https://duckduckgo.com/bv1.js'
-RE_BANG_VERSION = re.compile(r'\/bang\.v([0-9]+)\.js')
-HTTPS_COLON = 'https:'
-HTTP_COLON = 'http:'
-
-
-def get_bang_url():
-    response = requests.get(URL_BV1)
-    response.raise_for_status()
-
-    r = RE_BANG_VERSION.findall(response.text)
-    return f'https://duckduckgo.com/bang.v{r[0]}.js', r[0]
-
-
-def fetch_ddg_bangs(url):
-    response = requests.get(url)
-    response.raise_for_status()
-    return json.loads(response.content.decode())
-
-
-def merge_when_no_leaf(node):
-    """Minimize the number of nodes
-
-    A -> B -> C
-    B is child of A
-    C is child of B
-
-    If there are no C equals to '*', then each C are merged into A
-
-    For example:
-      d -> d -> g -> * (ddg*)
-        -> i -> g -> * (dig*)
-    becomes
-      d -> dg -> *
-        -> ig -> *
-    """
-    restart = False
-    if not isinstance(node, dict):
-        return
-
-    # create a copy of the keys so node can be modified
-    keys = list(node.keys())
-
-    for key in keys:
-        if key == '*':
-            continue
-
-        value = node[key]
-        value_keys = list(value.keys())
-        if '*' not in value_keys:
-            for value_key in value_keys:
-                node[key + value_key] = value[value_key]
-                merge_when_no_leaf(node[key + value_key])
-            del node[key]
-            restart = True
-        else:
-            merge_when_no_leaf(value)
-
-    if restart:
-        merge_when_no_leaf(node)
-
-
-def optimize_leaf(parent, parent_key, node):
-    if not isinstance(node, dict):
-        return
-
-    if len(node) == 1 and '*' in node and parent is not None:
-        parent[parent_key] = node['*']
-    else:
-        for key, value in node.items():
-            optimize_leaf(node, key, value)
-
-
-def parse_ddg_bangs(ddg_bangs):
-    bang_trie = {}
-    bang_urls = {}
-
-    for bang_definition in ddg_bangs:
-        # bang_list
-        bang_url = bang_definition['u']
-        if '{{{s}}}' not in bang_url:
-            # ignore invalid bang
-            continue
-
-        bang_url = bang_url.replace('{{{s}}}', chr(2))
-
-        # only for the https protocol: "https://example.com" becomes "//example.com"
-        if bang_url.startswith(HTTPS_COLON + '//'):
-            bang_url = bang_url[len(HTTPS_COLON):]
-
-        #
-        if bang_url.startswith(HTTP_COLON + '//') and bang_url[len(HTTP_COLON):] in bang_urls:
-            # if the bang_url uses the http:// protocol, and the same URL exists in https://
-            # then reuse the https:// bang definition. (written //example.com)
-            bang_def_output = bang_urls[bang_url[len(HTTP_COLON):]]
-        else:
-            # normal use case : new http:// URL or https:// URL (without "https:", see above)
-            bang_rank = str(bang_definition['r'])
-            bang_def_output = bang_url + chr(1) + bang_rank
-            bang_def_output = bang_urls.setdefault(bang_url, bang_def_output)
-
-        bang_urls[bang_url] = bang_def_output
-
-        # bang name
-        bang = bang_definition['t']
-
-        # bang_trie
-        t = bang_trie
-        for bang_letter in bang:
-            t = t.setdefault(bang_letter, {})
-        t = t.setdefault('*', bang_def_output)
-
-    # optimize the trie
-    merge_when_no_leaf(bang_trie)
-    optimize_leaf(None, None, bang_trie)
-
-    return bang_trie
-
-
-def get_bangs_filename():
-    return join(join(searx_dir, "data"), "external_bangs.json")
-
-
-if __name__ == '__main__':
-    bangs_url, bangs_version = get_bang_url()
-    print(f'fetch bangs from {bangs_url}')
-    output = {
-        'version': bangs_version,
-        'trie': parse_ddg_bangs(fetch_ddg_bangs(bangs_url))
-    }
-    with open(get_bangs_filename(), 'w') as fp:
-        json.dump(output, fp, ensure_ascii=False, indent=4)