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import os
import imp
from collections import namedtuple
import geany
PluginInfo = namedtuple('PluginInfo', 'filename, name, version, description, author, cls')
class PluginLoader(object):
plugins = {}
def __init__(self, plugin_dirs):
self.plugin_dirs = plugin_dirs
self.available_plugins = []
for plugin in self.iter_plugin_info():
self.available_plugins.append(plugin)
self.restore_loaded_plugins()
def update_loaded_plugins_file(self):
for path in self.plugin_dirs:
if os.path.isdir(path):
try:
state_file = os.path.join(path, '.loaded_plugins')
with open(state_file, 'w') as f:
for plugfn in self.plugins:
f.write("%s\n" % plugfn)
except IOError as err:
if err.errno == 13: #perms
pass
else:
raise
def restore_loaded_plugins(self):
loaded_plugins = []
for path in reversed(self.plugin_dirs):
state_file = os.path.join(path, ".loaded_plugins")
if os.path.exists(state_file):
for line in open(state_file):
line = line.strip()
if line not in loaded_plugins:
loaded_plugins.append(line)
for filename in loaded_plugins:
self.load_plugin(filename)
def load_all_plugins(self):
for plugin_info in self.iter_plugin_info():
if plugin_filename.endswith('test.py'): # hack for testing
continue
plug = self.load_plugin(plugin_info.filename)
if plug:
print("Loaded plugin: %s" % plugin_info.filename)
print(" Name: %s v%s" % (plug.name, plug.version))
print(" Desc: %s" % plug.description)
print(" Author: %s" % plug.author)
def unload_all_plugins(self):
for plugin in self.plugins:
self.unload_plugin(plugin)
def reload_all_plugins(self):
self.unload_all_plugins()
self.load_all_plugins()
def iter_plugin_info(self):
for d in self.plugin_dirs:
if os.path.isdir(d):
for current_file in os.listdir(d):
#check inside folders inside the plugins dir so we can load .py files here as plugins
current_path=os.path.abspath(os.path.join(d, current_file))
if os.path.isdir(current_path):
for plugin_folder_file in os.listdir(current_path):
if plugin_folder_file.endswith('.py'):
#loop around results if its fails to load will never reach yield
for p in self.load_plugin_info(current_path,plugin_folder_file):
yield p
#not a sub directory so if it ends with .py lets just attempt to load it as a plugin
if current_file.endswith('.py'):
#loop around results if its fails to load will never reach yield
for p in self.load_plugin_info(d,current_file):
yield p
def load_plugin_info(self,d,f):
filename = os.path.abspath(os.path.join(d, f))
if filename.endswith("test.py"):
pass
text = open(filename).read()
module_name = os.path.basename(filename)[:-3]
try:
module = imp.load_source(module_name, filename)
except ImportError as exc:
print "Error: failed to import settings module ({})".format(exc)
module=None
if module:
for k, v in module.__dict__.iteritems():
if k == geany.Plugin.__name__:
continue
try:
if issubclass(v, geany.Plugin):
inf = PluginInfo(
filename,
getattr(v, '__plugin_name__'),
getattr(v, '__plugin_version__', ''),
getattr(v, '__plugin_description__', ''),
getattr(v, '__plugin_author__', ''),
v)
yield inf
except TypeError:
continue
def load_plugin(self, filename):
for avail in self.available_plugins:
if avail.filename == filename:
inst = avail.cls()
self.plugins[filename] = inst
self.update_loaded_plugins_file()
geany.ui_utils.set_statusbar('GeanyPy: plugin activated: %s' %
inst.name, True)
return inst
def unload_plugin(self, filename):
try:
plugin = self.plugins[filename]
name = plugin.name
plugin.cleanup()
del self.plugins[filename]
self.update_loaded_plugins_file()
geany.ui_utils.set_statusbar('GeanyPy: plugin deactivated: %s' %
name, True)
except KeyError:
print("Unable to unload plugin '%s': it's not loaded" % filename)
def reload_plugin(self, filename):
if filename in self.plugins:
self.unload_plugin(filename)
self.load_plugin(filename)
def plugin_has_help(self, filename):
for plugin_info in self.iter_plugin_info():
if plugin_info.filename == filename:
return hasattr(plugin_info.cls, 'show_help')
def plugin_has_configure(self, filename):
try:
return hasattr(self.plugins[filename], 'show_configure')
except KeyError:
return None
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