add search subparser (#15)

src/ahriman/application/ahriman.py

@@ -59,6 +59,7 @@ def _parser() -> argparse.ArgumentParser:
     _set_rebuild_parser(subparsers)
     _set_remove_parser(subparsers)
     _set_report_parser(subparsers)
+    _set_search_parser(subparsers)
     _set_setup_parser(subparsers)
     _set_sign_parser(subparsers)
     _set_status_parser(subparsers)
@@ -169,6 +170,18 @@ def _set_report_parser(root: SubParserAction) -> argparse.ArgumentParser:
     return parser
 
 
+def _set_search_parser(root: SubParserAction) -> argparse.ArgumentParser:
+    """
+    add parser for search subcommand
+    :param root: subparsers for the commands
+    :return: created argument parser
+    """
+    parser = root.add_parser("search", help="search for package", description="search for package in AUR using API")
+    parser.add_argument("search", help="search terms, can be specified multiple times", nargs="+")
+    parser.set_defaults(handler=handlers.Search, lock=None, no_report=True, unsafe=True)
+    return parser
+
+
 def _set_setup_parser(root: SubParserAction) -> argparse.ArgumentParser:
     """
     add parser for setup subcommand

src/ahriman/application/handlers/__init__.py

@@ -25,6 +25,7 @@ from ahriman.application.handlers.dump import Dump
 from ahriman.application.handlers.rebuild import Rebuild
 from ahriman.application.handlers.remove import Remove
 from ahriman.application.handlers.report import Report
+from ahriman.application.handlers.search import Search
 from ahriman.application.handlers.setup import Setup
 from ahriman.application.handlers.sign import Sign
 from ahriman.application.handlers.status import Status

src/ahriman/application/handlers/search.py

@@ -0,0 +1,58 @@
+#
+# Copyright (c) 2021 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+import argparse
+import aur  # type: ignore
+
+from typing import Callable, Type
+
+from ahriman.application.handlers.handler import Handler
+from ahriman.core.configuration import Configuration
+
+
+class Search(Handler):
+    """
+    packages search handler
+    """
+
+    @classmethod
+    def run(cls: Type[Handler], args: argparse.Namespace, architecture: str, configuration: Configuration) -> None:
+        """
+        callback for command line
+        :param args: command line args
+        :param architecture: repository architecture
+        :param configuration: configuration instance
+        """
+        search = " ".join(args.search)
+        packages = aur.search(search)
+
+        # it actually always should return string
+        # explicit cast to string just to avoid mypy warning for untyped library
+        comparator: Callable[[aur.Package], str] = lambda item: str(item.package_base)
+        for package in sorted(packages, key=comparator):
+            Search.log_fn(package)
+
+    @staticmethod
+    def log_fn(package: aur.Package) -> None:
+        """
+        log package information
+        :param package: package object as from AUR
+        """
+        print(f"=> {package.package_base} {package.version}")
+        print(f"   {package.description}")

src/ahriman/core/configuration.py

@@ -140,7 +140,7 @@ class Configuration(configparser.RawConfigParser):
                 if path == self.logging_path:
                     continue  # we don't want to load logging explicitly
                 self.read(path)
-        except (FileNotFoundError, configparser.NoOptionError):
+        except (FileNotFoundError, configparser.NoOptionError, configparser.NoSectionError):
             pass
 
     def load_logging(self, logfile: bool) -> None: