lib/python/pdbrc.py

   1 # This is startup file for interactive python debugger pdb.
   2 # Use it like this in ~/.pdbrc:
   3 # import os
   4 # x = execfile("pdbrc.py")
   5 # See http://wiki.python.org/moin/PdbRcIdea
   6
   7 def init():
   8     import atexit
   9     import os
  10     import sys
  11     import readline
  12
  13     # Command line history:
  14     histfile = os.path.expanduser("~/.pdb_history")
  15
  16     try:
  17         readline.read_history_file(histfile)
  18     except IOError:
  19         pass
  20
  21
  22     def savehist(histfile=histfile):
  23         import os
  24         import readline
  25
  26         histfilesize = os.environ.get('HISTFILESIZE') \
  27             or os.environ.get('HISTSIZE')
  28         if histfilesize:
  29             try:
  30                 histfilesize = int(histfilesize)
  31             except ValueError:
  32                 pass
  33             else:
  34                 readline.set_history_length(histfilesize)
  35         readline.write_history_file(histfile)
  36
  37     atexit.register(savehist)
  38
  39
  40     def info(type, value, tb):
  41         # return to debugger after fatal exception (Python cookbook 14.5):
  42         import pdb
  43         import sys
  44         import traceback
  45
  46         if hasattr(sys, 'ps1') or not sys.stderr.isatty():
  47             sys.__excepthook__(type, value, tb)
  48         traceback.print_exception(type, value, tb)
  49         print
  50         pdb.pm()
  51
  52     sys.excepthook = info
  53
  54 init()
  55
  56 # https://github.com/giampaolo/sysconf/blob/master/home/.pdbrc.py
  57 import pdb
  58 import rlcompleter
  59 #pdb.Pdb.complete = rlcompleter.Completer(locals()).complete
  60
  61 # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/498182
  62 def complete(self, text, state, rlcompleter=rlcompleter):
  63     """return the next possible completion for text, using the current frame's
  64        local namespace
  65
  66        This is called successively with state == 0, 1, 2, ... until it
  67        returns None.  The completion should begin with 'text'.
  68     """
  69     # keep a completer class, and make sure that it uses the current local scope
  70     if not hasattr(self, 'completer'):
  71         self.completer = rlcompleter.Completer(self.curframe.f_locals)
  72     else:
  73         self.completer.namespace = self.curframe.f_locals
  74     return self.completer.complete(text, state)
  75
  76 # Cleanup any variables that could otherwise clutter up the namespace.
  77 del pdb, rlcompleter