monitor/extra/Gnuplot/gp.py

   1 # $Id: gp.py 292 2006-03-03 09:49:04Z mhagger $
   2
   3 # Copyright (C) 1998-2003 Michael Haggerty <mhagger@alum.mit.edu>
   4 #
   5 # This file is licensed under the GNU Lesser General Public License
   6 # (LGPL).  See LICENSE.txt for details.
   7
   8 """gp -- a platform-independent interface to a gnuplot process.
   9
  10 This file imports a low-level, platform-independent interface to the
  11 gnuplot program.  Which interface is imported depends on the platform.
  12 There are variations of this file for Unix, the Macintosh, and for
  13 Windows called gp_unix.py, gp_mac.py, and gp_win32.py, respectively.
  14 Note that the end-user should use the more capable interface from
  15 __init__.py (i.e., 'import Gnuplot') rather than the low-level
  16 interface imported by this file.
  17
  18 See gp_unix.py for most documentation about the facilities of the
  19 gp_*.py modules.
  20
  21 """
  22
  23 import sys, string
  24
  25 # Low-level communication with gnuplot is platform-dependent.  Import
  26 # the appropriate implementation of GnuplotProcess based on the
  27 # platform:
  28 if sys.platform == 'mac':
  29     from gp_mac import GnuplotOpts, GnuplotProcess, test_persist
  30 elif sys.platform == 'win32':
  31     from gp_win32 import GnuplotOpts, GnuplotProcess, test_persist
  32 elif sys.platform == 'darwin':
  33     from gp_macosx import GnuplotOpts, GnuplotProcess, test_persist
  34 elif sys.platform[:4] == 'java':
  35     from gp_java import GnuplotOpts, GnuplotProcess, test_persist
  36 elif sys.platform == 'cygwin':
  37     from gp_cygwin import GnuplotOpts, GnuplotProcess, test_persist
  38 else:
  39     from gp_unix import GnuplotOpts, GnuplotProcess, test_persist
  40
  41
  42 def double_quote_string(s):
  43     """Return string s quoted and surrounded by double-quotes for gnuplot."""
  44
  45     for c in ['\\', '\"']:
  46         s = string.replace(s, c, '\\' + c)
  47
  48     return '"%s"' % (s,)
  49
  50