Mercurial > parpg-core

annotate src/parpg/console.py @ 0:1fd2201f5c36

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Initial commit of parpg-core.
author M. George Hansen <technopolitica@gmail.com>
date Sat, 14 May 2011 01:12:35 -0700
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1fd2201f5c36 Initial commit of parpg-core.
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1 # This program is free software: you can redistribute it and/or modify
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2 # it under the terms of the GNU General Public License as published by
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3 # the Free Software Foundation, either version 3 of the License, or
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4 # (at your option) any later version.
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5
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6 # This program is distributed in the hope that it will be useful,
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7 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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8 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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9 # GNU General Public License for more details.
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10
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11 # You should have received a copy of the GNU General Public License
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12 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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13
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14 import re
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15 import os
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16 import sys
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17 from StringIO import StringIO
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18 import code
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19
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20 class Console:
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21 def __init__(self, app_listener):
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22 """
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23 @type appListener: ApplicationListener
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24 @param appListener: ApplicationListener object providing a link with
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25 the Controller, the view and the GameModel"""
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26 exit_help = "Terminate application"
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27 grid_help = "Toggle grid display"
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28 run_help = "Toggle player run/walk"
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29 help_help = "Show this help string"
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30 load_help = "Usage: load directory file"
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31 python_help = "Run some python code"
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32 quit_help = "Terminate application"
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33 save_help = "Usage: save directory file"
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34 pause_help = "Pause/Unpause the game"
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35
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36 self.commands = [
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37 {"cmd":"exit" ,"callback":self.handleQuit ,"help": exit_help},
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38 {"cmd":"grid" ,"callback":self.handleGrid ,"help": grid_help},
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39 {"cmd":"help" ,"callback":self.handleHelp ,"help": help_help},
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40 {"cmd":"load" ,"callback":self.handleLoad ,"help": load_help},
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41 {"cmd":"pause" ,"callback":self.handlePause ,"help": pause_help},
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42 {"cmd":"python","callback":self.handlePython,"help": python_help},
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43 {"cmd":"run" ,"callback":self.handleRun ,"help": run_help},
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44 {"cmd":"save" ,"callback":self.handleSave ,"help": save_help},
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45 {"cmd":"quit" ,"callback":self.handleQuit ,"help": quit_help},
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46 ]
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47 self.app_listener = app_listener
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48 self.view = self.app_listener.view
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49 self.model = self.app_listener.model
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50 self.game_state = self.app_listener.view.model.game_state
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51 self.console_locals = {"__name__":"__paprg_console__",\
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52 "__doc__": None,\
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53 "app_listener":self.app_listener,\
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54 "model":self.app_listener.model,\
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55 "view":self.app_listener.view,\
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56 "engine":self.app_listener.engine}
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57
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58 self.console = code.InteractiveConsole(self.console_locals)
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59
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60 def handleQuit(self, command):
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61 """Implements the quit console command
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62 @type command: string
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63 @param command: The command to run
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64 @return: The resultstring"""
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65 self.app_listener.quitGame()
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66 return "Terminating ..."
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67
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68 def handlePause(self, command):
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69 """Implements the pause console command
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70 @type command: string
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71 @param command: The command to run
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72 @return: The resultstring"""
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73 self.model.togglePause()
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74 return "Game (un)paused"
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75
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76 def handleGrid(self, command):
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77 """Implements the grid console command
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78 @type command: string
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79 @param command: The command to run
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80 @return: The resultstring"""
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81 self.app_listener.view.active_map.toggleRenderer('GridRenderer')
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82 return "Grid toggled"
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83
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84 def handleRun(self, command):
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85 """Toggles run/walk mode of the PC player
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86 @type command: string
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87 @param command: The command to run.
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88 @return: The response"""
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89 if self.app_listener.model.pc_run == 1:
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90 self.app_listener.model.pc_run = 0
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91 return "PC is now walking"
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92 else:
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93 self.app_listener.model.pc_run = 1
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94 return "PC is now running"
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95
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96 def handleHelp(self, command):
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97 """Implements the help console command
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98 @type command: string
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99 @param command: The command to run
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100 @return: The resultstring"""
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101 res = ""
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102 for cmd in self.commands:
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103 res += "%10s: %s\n" % (cmd["cmd"], cmd["help"])
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104 return res
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105
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106 def handlePython(self,command):
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107 user_code = command[7:len(command)]
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108
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109 codeOut = StringIO()
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110
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111 #make stdout and stderr write to our file, not the terminal
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112 sys.stdout = codeOut
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113 sys.stderr = codeOut
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114
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115 #Workaround it not being possible to enter a blank line in the console
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116 if user_code == " ":
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117 user_code = ""
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118
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119 #Process the code
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120 self.console.push(user_code)
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121 if len(self.console.buffer) == 0:
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122 output = codeOut.getvalue()
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123 else:
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124 output = "..."
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125
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126
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127 #restore stdout and stderr
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128 sys.stdout = sys.__stdout__
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129 sys.stderr = sys.__stderr__
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130
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131 temp_output = output
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132 output = ""
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133 counter = 0
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134
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135 #Make the output fit in the console screen
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136 for char in temp_output:
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137 counter += 1
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138 if char == "\n":
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139 counter = 0
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140 elif counter == 110:
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141 output += "\n"
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142 counter = 0
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143 output += char
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144
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145 return output
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146
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147 def handleLoad(self, command):
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148 """Implements the load console command
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149 @type command: string
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150 @param command: The command to run
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151 @return: The resultstring"""
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152 result = None
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153 load_regex = re.compile('^load')
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154 l_matches = load_regex.match(command.lower())
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155 if (l_matches is not None):
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156 end_load = l_matches.end()
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157 try:
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158 l_args = command.lower()[end_load + 1:].strip()
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159 l_path, l_filename = l_args.split(' ')
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160 self.app_listener.model.load_save = True
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161 self.app_listener.model.savegame = os.path.join(l_path, l_filename)
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162 result = "Load triggered"
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163
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164 except Exception, l_error:
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165 self.app_listener.engine.getGuiManager().getConsole().println('Error: ' + str(l_error))
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166 result="Failed to load file"
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167
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168 return result
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169
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170 def handleSave(self, command):
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171 """Implements the save console command
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172 @type command: string
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173 @param command: The command to run
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174 @return: The resultstring"""
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175 save_regex = re.compile('^save')
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176 s_matches = save_regex.match(command.lower())
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177 if (s_matches != None):
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178 end_save = s_matches.end()
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179 try:
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180 s_args = command.lower()[end_save+1:].strip()
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181 s_path, s_filename = s_args.split(' ')
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182 self.app_listener.model.save(s_path, s_filename)
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183 result = "Saved to file: " + s_path + s_filename
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184
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185 except Exception, s_error:
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186 self.app_listener.engine.getGuiManager().getConsole(). \
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187 println('Error: ' + str(s_error))
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188 result = "Failed to save file"
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189 return result
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190
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191 def handleConsoleCommand(self, command):
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192 """Implements the console logic
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193 @type command: string
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194 @param command: The command to run
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195 @return: The response string """
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196 result = None
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197 for cmd in self.commands:
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198 regex = re.compile('^' + cmd["cmd"])
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199 if regex.match(command.lower()):
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200 result=cmd["callback"](command)
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201
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202 if result is None:
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203 result = self.handlePython("python " + command)
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204 return result