Added -r and -n to CLI

changelogs/changelogs.py

@@ -2,7 +2,7 @@
 import functools
 import subprocess
 from tempfile import mkdtemp
-import imp
+from importlib.util import module_from_spec, spec_from_file_location
 import requests
 import os
 import re
@@ -30,20 +30,27 @@ def _load_custom_functions(vendor, name):
     functions = {}
     # Some packages have dash in their name, replace them with underscore
     # E.g. python-ldap to python_ldap
-    filename = "{}.py".format(name.replace("-", "_").lower())
+    filename = f"{name.replace('-', '_').lower()}.py"
     path = os.path.join(
         os.path.dirname(os.path.realpath(__file__)),  # current working dir
         "custom",  # /dir/parser
         vendor,  # /dir/parser/pypi
         filename  # /dir/parser/pypi/django.py
     )
     if os.path.isfile(path):
-        module_name = "parser.{vendor}.{name}".format(vendor=vendor, name=name)
-        module = imp.load_source(module_name, path)
-        functions = dict(
-            (function, getattr(module, function, None)) for function in ALLOWED_CUSTOM_FUNCTIONS
+        module_name = f"parser.{vendor}.{name}"
+        spec = spec_from_file_location(module_name, path)
+        if spec is None or spec.loader is None:
+            return functions
+
+        module = module_from_spec(spec)
+        spec.loader.exec_module(module)
+
+        functions = {
+            function: getattr(module, function)
+            for function in ALLOWED_CUSTOM_FUNCTIONS
             if hasattr(module, function)
-        )
+        }
     return functions
 
 
@@ -235,7 +242,7 @@ def get_limited_content_entry(session, url, chars_limit):
                 # Avoid https://github.com/psf/requests/issues/3359
                 if not resp.encoding:
                     resp.encoding = 'utf-8'
-                limited_content = resp.iter_content(chunk_size=chars_limit, 
+                limited_content = resp.iter_content(chunk_size=chars_limit,
                                                     decode_unicode=True).__next__()
             except StopIteration:
                 pass
@@ -280,11 +287,11 @@ def get_content(session, urls, chars_limit):
 
             else:
                 content += "\n\n" + get_limited_content_entry(session, url, chars_limit)
-                
+
             # To avoid exceeding the content limit by accumulation
             if len(content) > chars_limit:
-                break   
-                
+                break
+
         except requests.ConnectionError:
             pass
     return content

changelogs/cli.py

@@ -15,6 +15,8 @@ def main():
                         action="store_true")
     parser.add_argument("-c", "--commits", help="",
                         action="store_true")
+    parser.add_argument("-r", "--reverse", help="list changelogs from older to newer", action="store_false")
+    parser.add_argument("-n", help="only show the n first results (defaults to all)", type=int)
 
     args = parser.parse_args()
     if args.verbose:
@@ -25,7 +27,7 @@ def main():
     else:
         data = changelogs.get(args.package, vendor=args.vendor)
 
-    for release in sorted(data.keys(), key=lambda v: parse(v), reverse=True):
+    for release in sorted(data.keys(), key=lambda v: parse(v), reverse=args.reverse)[:args.n]:
         print(release)
         print(data[release])
 

pyproject.toml

@@ -0,0 +1,80 @@
+[build-system]
+requires = ["setuptools>=69"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "changelogs"
+version = "0.15.1-dev"
+description = "A changelog finder and parser."
+requires-python = ">=3.6"
+authors = [
+  { name = "pyup.io", email = "support@pyup.io" }
+]
+# readme = { file = ["README.rst", "HISTORY.rst"], content-type = "text/x-rst" }
+readme = "README.rst"
+license = "MIT"
+license-files=["LICENSE", "AUTHORS.rst"]
+keywords = ["changelogs"]
+classifiers = [
+    'Development Status :: 2 - Pre-Alpha',
+    'Intended Audience :: Developers',
+    'Natural Language :: English',
+    'Programming Language :: Python :: 3',
+    'Programming Language :: Python :: 3.6',
+    'Programming Language :: Python :: 3.7',
+    'Programming Language :: Python :: 3.8',
+]
+
+dependencies = [
+    "requests",
+    "validators",
+    "packaging",
+    "lxml",
+    "gitchangelog",
+]
+
+[project.scripts]
+changelogs = "changelogs.cli:main"
+
+[project.urls]
+Homepage = "https://github.com/pyupio/changelogs"
+
+[project.optional-dependencies]
+test = [
+    "mock",
+    "pytest",
+    "pytest-cov",
+    "betamax",
+    "betamax-serializers",
+]
+
+dev = [
+    "mock",
+    "pytest",
+    "pytest-cov",
+    "betamax",
+    "betamax-serializers",
+    "flake8",
+    "tox",
+]
+
+[tool.setuptools.packages.find]
+include = ["changelogs*"]
+
+[tool.setuptools.package-data]
+changelogs = [
+    "custom/pypi/**/*",
+    "custom/npm/**/*",
+    "custom/gem/**/*",
+]
+
+[tool.flake8]
+exclude = [
+    "docs",
+    ".*",
+    "vcr",
+    "*.egg-info",
+    "build",
+    "dist",
+]
+max-line-length = 110