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utils.py
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utils.py
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# Copyright (C) 2015 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU Affero General Public License version 3, or any later version
# See top-level LICENSE file for more information
import flask
def filter_endpoints(url_map, prefix_url_rule, blacklist=[]):
"""Filter endpoints by prefix url rule.
Args:
- url_map: Url Werkzeug.Map of rules
- prefix_url_rule: prefix url string
- blacklist: blacklist of some url
Returns:
Dictionary of url_rule with values methods and endpoint.
The key is the url, the associated value is a dictionary of
'methods' (possible http methods) and 'endpoint' (python function)
"""
out = {}
for r in url_map:
rule = r['rule']
if rule == prefix_url_rule or rule in blacklist:
continue
if rule.startswith(prefix_url_rule):
out[rule] = {'methods': sorted(map(str, r['methods'])),
'endpoint': r['endpoint']}
return out
def prepare_directory_listing(files):
"""Given a list of dictionary files, return a view ready dictionary.
"""
ls = []
for entry in files:
new_entry = {'name': entry['name'],
'type': entry['type']}
if entry['type'] == 'dir':
new_entry['link'] = flask.url_for('browse_directory',
sha1_git=entry['target'])
else:
new_entry['link'] = flask.url_for('show_content',
q=entry['sha1'])
ls.append(new_entry)
return ls
def filter_field_keys(obj, field_keys):
"""Given an object instance (directory or list), and a csv field keys
to filter on.
Return the object instance with filtered keys.
Note: Returns obj as is if it's an instance of types not in (dictionary,
list)
Args:
- obj: one object (dictionary, list...) to filter.
- field_keys: csv or set of keys to filter the object on
Returns:
obj filtered on field_keys
"""
if isinstance(obj, dict):
filt_dict = {}
for key, value in obj.items():
if key in field_keys:
filt_dict[key] = value
return filt_dict
elif isinstance(obj, list):
filt_list = []
for e in obj:
filt_list.append(filter_field_keys(e, field_keys))
return filt_list
return obj
def fmap(f, data):
if isinstance(data, list):
return [f(x) for x in data]
if isinstance(data, dict):
return {k: f(v) for (k, v) in data.items()}
return f(data)

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