whitespace fixes, collect errors while loading plugins

[enigma2.git] / lib / python / Components / PluginComponent.py

diff --git a/lib/python/Components/PluginComponent.py b/lib/python/Components/PluginComponent.py
index ae06d7768a41062ab1dd24009335cefae326c6ac..120b4636751daa87c07d738835cb3432c7e8eaed 100644 (file)
--- a/lib/python/Components/PluginComponent.py
+++ b/lib/python/Components/PluginComponent.py
@@ -1,69 +1,88 @@
 import os
+import traceback
+import sys
 
 from Tools.Directories import *
+from Tools.Import import my_import
 from Plugins.Plugin import PluginDescriptor
 
-def my_import(name):
-       print name
-       mod = __import__(name)
-       components = name.split('.')
-       for comp in components[1:]:
-               mod = getattr(mod, comp)
-       return mod
-
 class PluginComponent:
        def __init__(self):
                self.plugins = {}
                self.pluginList = [ ]
                self.setPluginPrefix("Plugins.")
-               
+               self.resetWarnings()
+
        def setPluginPrefix(self, prefix):
                self.prefix = prefix
-       
+
        def addPlugin(self, plugin):
                self.pluginList.append(plugin)
                for x in plugin.where:
                        self.plugins.setdefault(x, []).append(plugin)
                        if x == PluginDescriptor.WHERE_AUTOSTART:
                                plugin(reason=0)
-       
+
        def removePlugin(self, plugin):
                self.pluginList.remove(plugin)
                for x in plugin.where:
                        self.plugins[x].remove(plugin)
                        if x == PluginDescriptor.WHERE_AUTOSTART:
                                plugin(reason=1)
-       
-       def readPluginList(self, directory, modules = [], depth = 1):
+
+       def readPluginList(self, directory):
                """enumerates plugins"""
                
-               directories = os.listdir(directory)
+               categories = os.listdir(directory)
                
-               for x in directories:
-                       path = directory + x + "/"
-                       if os.path.isdir(path):
-                               if fileExists(path + "plugin.py"):
-                                       plugin = my_import('.'.join(["Plugins"] + modules + [x, "plugin"]))
-                                       
-                                       if not plugin.__dict__.has_key("Plugins"):
-                                               print "Plugin %s doesn't have 'Plugin'-call." % (x)
-                                               continue
-                                       
-                                       plugins = plugin.Plugins()
-                                       
-                                       # allow single entry not to be a list
-                                       if type(plugins) is not list:
-                                               plugins = [ plugins ]
-                                       
-                                       for p in plugins:
-                                               p.updateIcon(path)
-                                               self.addPlugin(p);
-                               else:
-                                       self.readPluginList(path, modules + [x], depth - 1)
+               new_plugins = [ ]
+               
+               for c in categories:
+                       directory_category = directory + c
+                       if not os.path.isdir(directory_category):
+                               continue
+                       open(directory_category + "/__init__.py", "a").close()
+                       for pluginname in os.listdir(directory_category):
+                               path = directory_category + "/" + pluginname
+                               if os.path.isdir(path):
+                                       if fileExists(path + "/plugin.pyc") or fileExists(path + "/plugin.py"):
+                                               try:
+                                                       plugin = my_import('.'.join(["Plugins", c, pluginname, "plugin"]))
+
+                                                       if not plugin.__dict__.has_key("Plugins"):
+                                                               print "Plugin %s doesn't have 'Plugin'-call." % (pluginname)
+                                                               continue
+
+                                                       plugins = plugin.Plugins(path=path)
+                                               except Exception, exc:
+                                                       print "Plugin ", c + "/" + pluginname, "failed to load:", exc
+                                                       traceback.print_exc(file=sys.stdout)
+                                                       print "skipping plugin."
+                                                       self.warnings.append( (c + "/" + pluginname, str(exc)) )
+                                                       continue
+
+                                               # allow single entry not to be a list
+                                               if type(plugins) is not list:
+                                                       plugins = [ plugins ]
+
+                                               for p in plugins:
+                                                       p.updateIcon(path)
+                                                       new_plugins.append(p)
+
+               # build a diff between the old list of plugins and the new one
+               # internally, the "fnc" argument will be compared with __eq__
+               plugins_added = [p for p in new_plugins if p not in self.pluginList]
+               plugins_removed = [p for p in self.pluginList if p not in new_plugins]
+
+               for p in plugins_removed:
+                       self.removePlugin(p)
+
+               for p in plugins_added:
+                       self.addPlugin(p)
 
        def getPlugins(self, where):
                """Get list of plugins in a specific category"""
-               
+
                if type(where) is not list:
                        where = [ where ]
                res = [ ]
@@ -72,8 +91,21 @@ class PluginComponent:
                                res.append(p)
                return res
 
+       def getPluginsForMenu(self, menuid):
+               res = [ ]
+               for p in self.getPlugins(PluginDescriptor.WHERE_SETUP):
+                       res += p(menuid)
+               return res
+
+       def clearPluginList(self):
+               self.pluginList = []
+               self.plugins = {}
+
        def shutdown(self):
                for p in self.pluginList[:]:
                        self.removePlugin(p)
 
+       def resetWarnings(self):
+               self.warnings = [ ]
+
 plugins = PluginComponent()