projects.mako.cc - twitter-api-cdsw/blob - win_unicode_console/console.py

   1
   2 import code
   3 import sys
   4 import __main__
   5
   6
   7 def print_banner():
   8         print("Python {} on {}".format(sys.version, sys.platform))
   9         print('Type "help", "copyright", "credits" or "license" for more information.')
  10
  11 class InteractiveConsole(code.InteractiveConsole):
  12         # code.InteractiveConsole without banner
  13         # exits on EOF
  14         # also more robust treating of sys.ps1, sys.ps2
  15         # prints prompt into stderr rather than stdout
  16         # flushes sys.stderr and sys.stdout
  17
  18         def __init__(self, locals=None, filename="<stdin>"):
  19                 self.done = False
  20                 super().__init__(locals, filename)
  21
  22         def raw_input(self, prompt=""):
  23                 sys.stderr.write(prompt)
  24                 return input()
  25
  26         def runcode(self, code):
  27                 super().runcode(code)
  28                 sys.stderr.flush()
  29                 sys.stdout.flush()
  30
  31         def interact(self):
  32                 #sys.ps1 = "~>> "
  33                 #sys.ps2 = "~.. "
  34
  35                 try:
  36                         sys.ps1
  37                 except AttributeError:
  38                         sys.ps1 = ">>> "
  39
  40                 try:
  41                         sys.ps2
  42                 except AttributeError:
  43                         sys.ps2 = "... "
  44
  45                 more = 0
  46                 while not self.done:
  47                         try:
  48                                 if more:
  49                                         try:
  50                                                 prompt = sys.ps2
  51                                         except AttributeError:
  52                                                 prompt = ""
  53                                 else:
  54                                         try:
  55                                                 prompt = sys.ps1
  56                                         except AttributeError:
  57                                                 prompt = ""
  58
  59                                 try:
  60                                         line = self.raw_input(prompt)
  61                                 except EOFError:
  62                                         self.on_EOF()
  63                                 else:
  64                                         more = self.push(line)
  65
  66                         except KeyboardInterrupt:
  67                                 self.write("\nKeyboardInterrupt\n")
  68                                 self.resetbuffer()
  69                                 more = 0
  70
  71         def on_EOF(self):
  72                 self.write("\n")
  73                 # sys.exit()
  74                 raise SystemExit from None
  75
  76
  77 running_console = None
  78
  79 def enable():
  80         global running_console
  81
  82         if running_console is not None:
  83                 raise RuntimeError("interactive console already running")
  84         else:
  85                 running_console = InteractiveConsole(__main__.__dict__)
  86                 running_console.interact()
  87
  88 def disable():
  89         global running_console
  90
  91         if running_console is None:
  92                 raise RuntimeError("interactive console is not running")
  93         else:
  94                 running_console.done = True
  95                 running_console = None
  96