Package Camelot :: Package camelot :: Package core :: Module resources
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Source Code for Module Camelot.camelot.core.resources

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27   
28  """wrapper around pkg_resources, with fallback to using directories specified 
29  in the settings file if pkg_resources cannot be used. 
30   
31  to allow fallback to the settings file, specify the settings_attribute method, 
32  this is the attribute in the settings file that contains the folder with the 
33  resources as opposed to the folder containing the module itself. 
34   
35  this mechanism will probably be rewritten to support the loading of resources 
36  from zip files instead of falling back to settings. 
37   
38  when running from a bootstrapper, we'll try to use pgk_resources, even when 
39  runnin from within a zip file. 
40  """ 
41   
42  import pkg_resources 
43  import sys 
44  import os 
45  import logging 
46   
47  logger = logging.getLogger('camelot.core.resources') 
48   
49 -def resource_filename(module_name, filename, settings_attribute=None):
50 """Return the absolute path to a file in a directory 51 if the directory for the module cannot be accessed through pkg_resources, 52 fall back to the settings attribute 53 """ 54 import settings 55 if sys.path[0].endswith('.zip') and not hasattr(settings, 'BOOTSTRAPPER'): 56 # we're running from a zip file, pkg_resources won't work 57 if not settings_attribute: 58 logger.error('resources of module %s cannot be loaded because no settings_attribute is specified and the module is inside a zip file') 59 return '' 60 absolute_path = os.path.join(getattr(settings, settings_attribute), filename) 61 if not os.path.exists(absolute_path): 62 logger.error('resources of module %s cannot be loaded because %s does not exist'%(module_name, absolute_path)) 63 return '' 64 return os.path.join(absolute_path) 65 else: 66 return pkg_resources.resource_filename(module_name, filename)
67
68 -def resource_string(module_name, filename, settings_attribute):
69 import settings 70 if sys.path[0].endswith('.zip') and not hasattr(settings, 'BOOTSTRAPPER'): 71 return open(resource_filename(module_name, filename, settings_attribute), 'rb').read() 72 else: 73 return pkg_resources.resource_string(module_name, filename)
74