3 # Copyright 2004 Toby Dickenson
4 # Copyright 2008-2011 W. Trevor King
6 # Permission is hereby granted, free of charge, to any person obtaining
7 # a copy of this software and associated documentation files (the
8 # "Software"), to deal in the Software without restriction, including
9 # without limitation the rights to use, copy, modify, merge, publish,
10 # distribute, sublicense, and/or sell copies of the Software, and to
11 # permit persons to whom the Software is furnished to do so, subject
12 # to the following conditions:
14 # The above copyright notice and this permission notice shall be included
15 # in all copies or substantial portions of the Software.
17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
21 # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 """Extract a tree of module imports from a Python script.
31 LOG = logging.getLogger('py2depgraph')
32 LOG.setLevel(logging.DEBUG)
33 _STREAM_HANDLER = logging.StreamHandler()
34 _STREAM_HANDLER.setLevel(logging.CRITICAL)
35 _STREAM_HANDLER.setFormatter(
36 logging.Formatter('%(levelname)s - %(message)s'))
37 LOG.addHandler(_STREAM_HANDLER)
40 class mymf(modulefinder.ModuleFinder):
41 def __init__(self,*args,**kwargs):
45 self._last_caller = None
46 modulefinder.ModuleFinder.__init__(self,*args,**kwargs)
48 def import_hook(self, name, caller=None, fromlist=None, level=-1):
49 old_last_caller = self._last_caller
51 self._last_caller = caller
52 return modulefinder.ModuleFinder.import_hook(self,name,caller,fromlist, level)
54 self._last_caller = old_last_caller
55 LOG.debug('after import_hook(%s, %s, %s, %s), last_caller is %s'
56 % (name, caller, fromlist, level, self._last_caller))
58 def import_module(self,partnam,fqname,parent):
59 r = modulefinder.ModuleFinder.import_module(self,partnam,fqname,parent)
60 if None not in [r, self._last_caller]:
61 self._depgraph.setdefault(self._last_caller.__name__,{})[r.__name__] = 1
64 def load_module(self, fqname, fp, pathname, (suffix, mode, type)):
65 r = modulefinder.ModuleFinder.load_module(self, fqname, fp, pathname, (suffix, mode, type))
67 self._types[r.__name__] = type
68 self._paths[r.__name__] = pathname
72 if __name__=='__main__':
73 from optparse import OptionParser
74 from pprint import pprint
77 usage = '%prog [options] path/to/script.py'
78 p = OptionParser(usage=usage, description=__doc__)
79 p.add_option('-v', '--verbose', default=0, action='count',
80 help='Increment verbosity.')
82 options,args = p.parse_args()
84 log_level = logging.CRITICAL - 10*options.verbose
85 _STREAM_HANDLER.setLevel(log_level)
89 debug = options.verbose
91 mf = mymf(path=sys.path[:], debug=debug, excludes=[])
93 pprint({'depgraph':mf._depgraph,'types':mf._types,'paths':mf._paths})