Source Code for Module prompt.tab_completion

  1  ############################################################################### 
  2  #                                                                             # 
  3  # Copyright (C) 2003-2012 Edward d'Auvergne                                   # 
  4  #                                                                             # 
  5  # This file is part of the program relax (http://www.nmr-relax.com).          # 
  6  #                                                                             # 
  7  # This program 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 3 of the License, or           # 
 10  # (at your option) any later version.                                         # 
 11  #                                                                             # 
 12  # This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.       # 
 19  #                                                                             # 
 20  ############################################################################### 
 21   
 22  # Python module imports. 
 23  from re import match, split 
 24  from rlcompleter import get_class_members 
 25   
 26   
 27 -class Tab_completion: 
 28 -    def __init__(self, name_space={}, verbosity=0): 
 29          """Function for tab completion.""" 
 30   
 31          self.name_space = name_space 
 32          self.verbosity = verbosity 
 33   
 34   
 35 -    def create_list(self): 
 36          """Function to create the dictionary of options for tab completion.""" 
 37   
 38          self.list = list(self.name_space.keys()) 
 39   
 40          self.options = [] 
 41          for name in self.list: 
 42              if match(self.input, name): 
 43                  self.options.append(name) 
 44   
 45   
 46 -    def create_sublist(self): 
 47          """Function to create the dictionary of options for tab completion.""" 
 48   
 49          # Split the input. 
 50          list = split('\.', self.input) 
 51          if len(list) == 0: 
 52              return 
 53   
 54          # Construct the module and get the corresponding object. 
 55          module = list[0] 
 56          for i in range(1, len(list)-1): 
 57              module = module + '.' + list[i] 
 58          object = eval(module, self.name_space) 
 59   
 60          # Get the object attributes. 
 61          self.list = dir(object) 
 62   
 63          # If the object is a class, get all the class attributes as well. 
 64          if hasattr(object, '__class__'): 
 65              self.list.append('__class__') 
 66              self.list = self.list + get_class_members(object.__class__) 
 67   
 68          # Possible completions. 
 69          self.options = [] 
 70          for name in self.list: 
 71              if match(list[-1], name): 
 72                  self.options.append(module + '.' + name) 
 73   
 74          if self.verbosity: 
 75              print("List: " + repr(list)) 
 76              print("Module: " + repr(module)) 
 77              print("self.list: " + repr(self.list)) 
 78              print("self.options: " + repr(self.options)) 
 79   
 80   
 81 -    def finish(self, input, state): 
 82          """Return the next possible completion for 'input'""" 
 83   
 84          self.input = input 
 85          self.state = state 
 86   
 87          # Create a list of all possible options. 
 88          # Find a list of options by matching the input with self.list 
 89          if self.verbosity: 
 90              print("\nInput: " + repr(self.input)) 
 91          if not "." in self.input: 
 92              if self.verbosity: 
 93                  print("Creating list.") 
 94              self.create_list() 
 95              if self.verbosity: 
 96                  print("\tOk.") 
 97          else: 
 98              if self.verbosity: 
 99                  print("Creating sublist.") 
100              self.create_sublist() 
101              if self.verbosity: 
102                  print("\tOk.") 
103   
104   
105          # Return the options if self.options[state] exists, or return None otherwise. 
106          if self.verbosity: 
107              print("Returning options.") 
108          if self.state < len(self.options): 
109              return self.options[self.state] 
110          else: 
111              return None 
112