Mac/Lib/icopen.py

   1 """icopen patch
   2
   3 OVERVIEW
   4
   5 icopen patches MacOS Python to use the Internet Config file mappings to select
   6 the type and creator for a file.
   7
   8 Version 1 released to the public domain 3 November 1999
   9 by Oliver Steele (steele@cs.brandeis.edu).
  10
  11 DETAILS
  12
  13 This patch causes files created by Python's open(filename, 'w') command (and
  14 by functions and scripts that call it) to set the type and creator of the file
  15 to the type and creator associated with filename's extension (the
  16 portion of the filename after the last period), according to Internet Config.
  17 Thus, a script that creates a file foo.html will create one that opens in whatever
  18 browser you've set to handle *.html files, and so on.
  19
  20 Python IDE uses its own algorithm to select the type and creator for saved
  21 editor windows, so this patch won't effect their types.
  22
  23 As of System 8.6 at least, Internet Config is built into the system, and the
  24 file mappings are accessed from the Advanced pane of the Internet control
  25 panel.  User Mode (in the Edit menu) needs to be set to Advanced in order to
  26 access this pane.
  27
  28 INSTALLATION
  29
  30 Put this file in your Python path, and create a file named {Python}:sitecustomize.py
  31 that contains:
  32         import icopen
  33
  34 (If {Python}:sitecustomizer.py already exists, just add the 'import' line to it.)
  35
  36 The next time you launch PythonInterpreter or Python IDE, the patch will take
  37 effect.
  38 """
  39
  40 import __builtin__
  41
  42 _builtin_open = globals().get('_builtin_open', __builtin__.open)
  43
  44 def _open_with_typer(*args):
  45         file = apply(_builtin_open, args)
  46         filename = args[0]
  47         mode = 'r'
  48         if args[1:]:
  49                 mode = args[1]
  50         if mode[0] == 'w':
  51                 from ic import error, settypecreator
  52                 try:
  53                         settypecreator(filename)
  54                 except error:
  55                         pass
  56         return file
  57
  58 __builtin__.open = _open_with_typer
  59
  60 """
  61 open('test.py')
  62 _open_with_typer('test.py', 'w')
  63 _open_with_typer('test.txt', 'w')
  64 _open_with_typer('test.html', 'w')
  65 _open_with_typer('test.foo', 'w')
  66 """