Source Code for Module turbogears.command.info

 1  """Commands for listing TurboGears default and extension packages info""" 
 2   
 3  try: 
 4      from email.parser import Parser 
 5  except ImportError: # Python < 2.5 
 6      from email.Parser import Parser 
 7   
 8  import pkg_resources 
 9   
10  entrypoints = {"tg-admin Commands" : "turbogears.command", 
11      "Template Engines" : "python.templating.engines", 
12      "Widget Packages" : "turbogears.widgets", 
13      "TurboGears Extensions" : "turbogears.extensions", 
14      "Identity Providers" : "turbogears.identity.provider", 
15      "Visit Managers" : "turbogears.visit.manager", 
16      "Toolbox Gadgets" : "turbogears.toolboxcommand"} 
17   
18  parsestr = Parser().parsestr 
19   
20 -def retrieve_pkg_info(distribution): 
21      """Retrieve parsed package info from distribution.""" 
22      return parsestr(distribution.get_metadata('PKG-INFO')) 
23   
24   
25 -def retrieve_url(distribution): 
26      """Retrieve URL from distribution.""" 
27      try: 
28          info = retrieve_pkg_info(distribution) 
29      except Exception: 
30          url = None 
31      else: 
32          url = info['Home-page'] or info['Url']  or info['Download-Url'] 
33      return url 
34   
35   
36 -def add_link(distribution): 
37      """Add link to distribution.""" 
38      info = str(distribution) 
39      url = retrieve_url(distribution) 
40      if url: 
41          info = str(info).split(None, 1) 
42          info[0] = '<a href="%s">%s</a>' % (url, info[0]) 
43          info = ' '.join(info) 
44      return info 
45   
46   
47 -def retrieve_info(with_links=False): 
48      """Retrieve default and extension packages info.""" 
49      format = with_links and add_link or str 
50      # get default packages 
51      packages = [format(pkg) for pkg in pkg_resources.require("Turbogears")] 
52      # get extension packages 
53      plugins = {} 
54      for name, pointname in entrypoints.items(): 
55          plugins[name] = ["%s (%s)" % (entrypoint.name, format(entrypoint.dist)) 
56              for entrypoint in pkg_resources.iter_entry_points(pointname)] 
57      return packages, plugins 
58   
59   
60 -class InfoCommand: 
61      """Shows version info for debugging.""" 
62   
63      desc = "Show version info" 
64   
65 -    def __init__(self,*args, **kwargs): 
66          pass 
67   
68 -    def run(self): 
69          print """TurboGears Complete Version Information 
70   
71  TurboGears requires: 
72  """ 
73          packages, plugins = retrieve_info() 
74          for p in packages: 
75              print '*', p 
76          for name, pluginlist in plugins.items(): 
77              print "\n", name, "\n" 
78              for plugin in pluginlist: 
79                  print '*', plugin 
80