65 lines
2.5 KiB
Python
65 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# Copyright (c) the purl authors
|
|
# SPDX-License-Identifier: MIT
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
# of this software and associated documentation files (the "Software"), to deal
|
|
# in the Software without restriction, including without limitation the rights
|
|
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
# copies of the Software, and to permit persons to whom the Software is
|
|
# furnished to do so, subject to the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included in all
|
|
# copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
# SOFTWARE.
|
|
|
|
# Visit https://github.com/package-url/packageurl-python for support and
|
|
# download.
|
|
|
|
|
|
from packageurl import PackageURL
|
|
|
|
|
|
def purl_to_lookups(purl_str, encode=True, include_empty_fields=False):
|
|
"""
|
|
Return a lookups dictionary built from the provided `purl` (Package URL) string.
|
|
These lookups can be used as QuerySet filters.
|
|
If include_empty_fields is provided, the resulting dictionary will include fields
|
|
with empty values. This is useful to get exact match.
|
|
Note that empty values are always returned as empty strings as the model fields
|
|
are defined with `blank=True` and `null=False`.
|
|
"""
|
|
if not purl_str.startswith("pkg:"):
|
|
purl_str = "pkg:" + purl_str
|
|
|
|
try:
|
|
package_url = PackageURL.from_string(purl_str)
|
|
except ValueError:
|
|
return # Not a valid PackageURL
|
|
|
|
package_url_dict = package_url.to_dict(encode=encode, empty="")
|
|
if include_empty_fields:
|
|
return package_url_dict
|
|
else:
|
|
return without_empty_values(package_url_dict)
|
|
|
|
|
|
def without_empty_values(input_dict):
|
|
"""
|
|
Return a new dict not including empty value entries from `input_dict`.
|
|
|
|
`None`, empty string, empty list, and empty dict/set are cleaned.
|
|
`0` and `False` values are kept.
|
|
"""
|
|
empty_values = ([], (), {}, "", None)
|
|
|
|
return {key: value for key, value in input_dict.items() if value not in empty_values}
|