Source Code for Module prompt.tab_completion

  1  ############################################################################### 
  2  #                                                                             # 
  3  # Copyright (C) 2003 Edward d'Auvergne                                        # 
  4  #                                                                             # 
  5  # This file is part of the program relax.                                     # 
  6  #                                                                             # 
  7  # relax is free software; you can redistribute it and/or modify               # 
  8  # it under the terms of the GNU General Public License as published by        # 
  9  # the Free Software Foundation; either version 2 of the License, or           # 
 10  # (at your option) any later version.                                         # 
 11  #                                                                             # 
 12  # relax is distributed in the hope that it will be useful,                    # 
 13  # but WITHOUT ANY WARRANTY; without even the implied warranty of              # 
 14  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               # 
 15  # GNU General Public License for more details.                                # 
 16  #                                                                             # 
 17  # You should have received a copy of the GNU General Public License           # 
 18  # along with relax; if not, write to the Free Software                        # 
 19  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA   # 
 20  #                                                                             # 
 21  ############################################################################### 
 22   
 23  # Python module imports. 
 24  from re import match, split 
 25  from rlcompleter import get_class_members 
 26   
 27   
 28 -class Tab_completion: 
 29 -    def __init__(self, name_space={}, verbosity=0): 
 30          """Function for tab completion.""" 
 31   
 32          self.name_space = name_space 
 33          self.verbosity = verbosity 
 34   
 35   
 36 -    def create_list(self): 
 37          """Function to create the dictionary of options for tab completion.""" 
 38   
 39          self.list = list(self.name_space.keys()) 
 40   
 41          self.options = [] 
 42          for name in self.list: 
 43              if match(self.input, name): 
 44                  self.options.append(name) 
 45   
 46   
 47 -    def create_sublist(self): 
 48          """Function to create the dictionary of options for tab completion.""" 
 49   
 50          # Split the input. 
 51          list = split('\.', self.input) 
 52          if len(list) == 0: 
 53              return 
 54   
 55          # Construct the module and get the corresponding object. 
 56          module = list[0] 
 57          for i in xrange(1, len(list)-1): 
 58              module = module + '.' + list[i] 
 59          object = eval(module, self.name_space) 
 60   
 61          # Get the object attributes. 
 62          self.list = dir(object) 
 63   
 64          # If the object is a class, get all the class attributes as well. 
 65          if hasattr(object, '__class__'): 
 66              self.list.append('__class__') 
 67              self.list = self.list + get_class_members(object.__class__) 
 68   
 69          # Possible completions. 
 70          self.options = [] 
 71          for name in self.list: 
 72              if match(list[-1], name): 
 73                  self.options.append(module + '.' + name) 
 74   
 75          if self.verbosity: 
 76              print(("List: " + repr(list))) 
 77              print(("Module: " + repr(module))) 
 78              print(("self.list: " + repr(self.list))) 
 79              print(("self.options: " + repr(self.options))) 
 80   
 81   
 82 -    def finish(self, input, state): 
 83          """Return the next possible completion for 'input'""" 
 84   
 85          self.input = input 
 86          self.state = state 
 87   
 88          # Create a list of all possible options. 
 89          # Find a list of options by matching the input with self.list 
 90          if self.verbosity: 
 91              print(("\nInput: " + repr(self.input))) 
 92          if not "." in self.input: 
 93              if self.verbosity: 
 94                  print("Creating list.") 
 95              self.create_list() 
 96              if self.verbosity: 
 97                  print("\tOk.") 
 98          else: 
 99              if self.verbosity: 
100                  print("Creating sublist.") 
101              self.create_sublist() 
102              if self.verbosity: 
103                  print("\tOk.") 
104   
105   
106          # Return the options if self.options[state] exists, or return None otherwise. 
107          if self.verbosity: 
108              print("Returning options.") 
109          if self.state < len(self.options): 
110              return self.options[self.state] 
111          else: 
112              return None 
113