Initial commit

1 files changed, 51 insertions, 0 deletions

diff --git a/plugins/__init__.py b/plugins/__init__.py
new file mode 100644
index 0000000..0e40be9
--- /dev/null
+++ b/plugins/__init__.py
@@ -0,0 +1,51 @@
+import logging
+import sys
+
+sys.path.insert(0, "plugins")
+debuglog = logging.getLogger("ManaChat.Debug")
+
+plugins_loaded = []
+
+
+class PluginError(Exception):
+    pass
+
+
+def load_plugin(config, plugin_name):
+    if plugin_name in plugins_loaded:
+        return
+
+    plugin = __import__(plugin_name)
+
+    for p in plugin.PLUGIN['blocks']:
+        if p in plugins_loaded:
+            raise PluginError("{} blocks {}".format(p, plugin_name))
+
+    for p in plugin.PLUGIN['requires']:
+        if p not in plugins_loaded:
+            load_plugin(config, p)
+
+    this = sys.modules[__name__]
+    setattr(this, plugin_name, plugin)
+
+    # filling the gaps in config
+    if not config.has_section(plugin_name):
+        config.add_section(plugin_name)
+
+    default_config = plugin.PLUGIN.setdefault('default_config', {})
+    for option, value in default_config.iteritems():
+        if not config.has_option(plugin_name, option):
+            config.set(plugin_name, option, str(value))
+
+    plugin.init(config)
+    plugins_loaded.append(plugin_name)
+    debuglog.info('Plugin %s loaded', plugin_name)
+
+
+def load_plugins(config):
+    for pn in config.options('Plugins'):
+        if config.getboolean('Plugins', pn):
+            try:
+                load_plugin(config, pn)
+            except ImportError as e:
+                debuglog.error('Error loading plugin %s: %s', pn, e)