old_contents: # -*- coding: iso-8859-1 -*-
  # Copyright (C) 2012 Bastian Kleineidam
  """
  Functions to load plugin modules.
  """
  import os
  import importlib
  
  
  def get_modules(folder='plugins'):
      """Find all valid modules in the plugins subdirectory. A valid module
      must have a .py extension, and is importable.
      @return: all loaded valid modules
      @rtype: iterator of module
      """
      dirname = os.path.join(os.path.dirname(__file__), folder)
      for modname in get_importable_modules(dirname):
          try:
              name ="..%s.%s" % (folder, modname)
              yield importlib.import_module(name, __name__)
          except ImportError as msg:
              print "ERROR: could not load module %s: %s" % (modname, msg)
  
  
  def get_importable_modules(folder):
      """Find all module files in the given folder that end with '.py' and
      don't start with an underscore.
      @return module names
      @rtype: iterator of string
      """
      for fname in sorted(os.listdir(folder)):
          if fname.endswith('.py') and not fname.startswith('_'):
              yield fname[:-3]
  
  
  def get_plugins(modules, classobj):
      """Find all scrapers in all modules.
      @param modules: the modules to search
      @ptype modules: iterator of modules
      @return: found scrapers
      @rytpe: iterator of class objects
      """
      for module in modules:
          for plugin in get_module_plugins(module, classobj):
              yield plugin
  
  
  def get_module_plugins(module, classobj):
      """Return all subclasses of _BasicScraper in the module.
      If the module defines __all__, only those entries will be searched,
      otherwise all objects not starting with '_' will be searched.
      """
      try:
          names = module.__all__
      except AttributeError:
          names = [x for x in vars(module) if not x.startswith('_')]
      for name in sorted(names):
          try:
              obj = getattr(module, name)
          except AttributeError:
              continue
          try:
              if issubclass(obj, classobj):
                  yield obj
          except TypeError:
              continue
  
new_contents: # -*- coding: iso-8859-1 -*-
  # Copyright (C) 2012 Bastian Kleineidam
  """
  Functions to load plugin modules.
  """
  import os
  import sys
  import zipfile
  import importlib
  
  
  def is_frozen ():
      """Return True if running inside a py2exe-generated executable."""
      return hasattr(sys, "frozen")
  
  
  def get_modules(folder='plugins'):
      """Find all valid modules in the plugins subdirectory. A valid module
      must have a .py extension, and is importable.
      @return: all loaded valid modules
      @rtype: iterator of module
      """
      if is_frozen():
          # find modules in library.zip filename
          zipname = os.path.dirname(os.path.dirname(__file__))
          with zipfile.ZipFile(zipname, 'r') as f:
              modnames = [os.path.splitext(n[17:])[0]
                for n in f.namelist()
                if n.startswith("dosagelib/%s" % folder)
                and "__init__" not in n]
      else:
          dirname = os.path.join(os.path.dirname(__file__), folder)
          modnames = get_importable_modules(dirname)
      for modname in modnames:
          try:
              name ="..%s.%s" % (folder, modname)
              yield importlib.import_module(name, __name__)
          except ImportError as msg:
              print "ERROR: could not load module %s: %s" % (modname, msg)
  
  
  def get_importable_modules(folder):
      """Find all module files in the given folder that end with '.py' and
      don't start with an underscore.
      @return module names
      @rtype: iterator of string
      """
      for fname in sorted(os.listdir(folder)):
          if fname.endswith('.py') and not fname.startswith('_'):
              yield fname[:-3]
  
  
  def get_plugins(modules, classobj):
      """Find all scrapers in all modules.
      @param modules: the modules to search
      @ptype modules: iterator of modules
      @return: found scrapers
      @rytpe: iterator of class objects
      """
      for module in modules:
          for plugin in get_module_plugins(module, classobj):
              yield plugin
  
  
  def get_module_plugins(module, classobj):
      """Return all subclasses of _BasicScraper in the module.
      If the module defines __all__, only those entries will be searched,
      otherwise all objects not starting with '_' will be searched.
      """
      try:
          names = module.__all__
      except AttributeError:
          names = [x for x in vars(module) if not x.startswith('_')]
      for name in sorted(names):
          try:
              obj = getattr(module, name)
          except AttributeError:
              continue
          try:
              if issubclass(obj, classobj):
                  yield obj
          except TypeError:
              continue
  
subject: Load modules from .zip file.