Extract Plugin class and plugin loading from main.py

src/sshare/main.py

@@ -14,17 +14,15 @@
 
 import argparse
 import getpass
-import importlib
-import importlib.util
 import os
 import os.path
-import pyclip
 import time
 import tomllib
 import subprocess
 import sys
 from pathlib import Path
 
+from sshare.plugin         import Plugin
 from sshare.plugins.config import Flag
 from sshare.plugins.config import NoArgument
 from sshare.plugins.config import NoDefault
@@ -57,10 +55,6 @@ def fatalicize(logger):
         sys.exit(1)
     setattr(logger, "fatal", fatal)
 
-class Plugin:
-    def __init__(self, name, module):
-        self.name   = name
-        self.module = module
 
 def main():
     config_directory = Path(os.environ.get("XDG_CONFIG_DIR") or f"{os.environ["HOME"]}/.config") / "sshare"
@@ -71,17 +65,18 @@ def main():
     # so that it can be used to report errors while loading and
     # configuring plugins
     # i.e. before other logging plugins have had a chance to be initialised
-    logger = importlib.import_module("sshare.plugins.default.command_line")
+    command_line = Plugin.internal("command_line")
+    logger = command_line.module
     fatalicize(logger)
 
     # Load inbuilt plugins
     plugins_flat = [
-        Plugin("command_line", logger),
+        command_line,
-        Plugin("file",         importlib.import_module("sshare.plugins.default.file")),
+        Plugin.internal("file"),
-        Plugin("current_time", importlib.import_module("sshare.plugins.default.current_time")),
+        Plugin.internal("current_time"),
-        Plugin("append_type",  importlib.import_module("sshare.plugins.default.append_type")),
+        Plugin.internal("append_type"),
-        Plugin("ssh",          importlib.import_module("sshare.plugins.default.ssh")),
+        Plugin.internal("ssh"),
-        Plugin("log_result",   importlib.import_module("sshare.plugins.default.log_result")),
+        Plugin.internal("log_result"),
     ]
     plugins = {}
     for type in [ "logger", "source", "name", "upload", "result" ]:
@@ -89,15 +84,9 @@ def main():
 
     # Load external plugins
     sys.dont_write_bytecode = True
-    for plugin in (config_directory / "plugins").iterdir():
+    for path in (config_directory / "plugins").iterdir():
-        if plugin.is_file() and plugin.suffix == ".py":
+        if path.is_file() and path.suffix == ".py":
-            module_spec = importlib.util.spec_from_file_location(
+            plugins_flat.append(Plugin.external(path))
-                plugin.stem,
-                plugin.as_posix(),
-            )
-            module = importlib.util.module_from_spec(module_spec)
-            module_spec.loader.exec_module(module)
-            plugins_flat.append(Plugin(plugin.stem, module))
     sys.dont_write_bytecode = False
 
     # Set plugin configurations from config file

src/sshare/plugin.py

@@ -0,0 +1,35 @@
+# This file is part of SSHare.
+#
+# SSHare 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.
+#
+# SSHare 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
+# SSHare. If not, see <https://www.gnu.org/licenses/>.
+
+import importlib
+import importlib.util
+
+class Plugin:
+    def __init__(self, name, module):
+        self.name   = name
+        self.module = module
+
+    @staticmethod
+    def internal(name):
+        return Plugin(name, importlib.import_module(f"sshare.plugins.default.{name}"))
+
+    @staticmethod
+    def external(path):
+        module_spec = importlib.util.spec_from_file_location(
+            path.stem,
+            path.as_posix(),
+        )
+        module = importlib.util.module_from_spec(module_spec)
+        module_spec.loader.exec_module(module)
+        return Plugin(path.stem, module)

src/sshare/plugins/default/ssh.py

@@ -52,7 +52,7 @@ def upload(name, source):
             f"-p {config.port}",
             f"{config.user}@{config.host}",
             "-T",
-            f"cat - > {config.path}/{name}"
+            f"cat > {config.path}/{name}"
         ]
         process = subprocess.run(
             command,