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# -*- coding: utf-8 -*-
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""" Proxy module for accessing platform specific utility functions.
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Importing this module should give you the implementations that are correct
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for your operation system, from platutils_PLATFORMNAME module.
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"""
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#*****************************************************************************
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# Copyright (C) 2001-2006 Fernando Perez <fperez@colorado.edu>
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#*****************************************************************************
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import os
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import sys
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# Import the platform-specific implementations
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if os.name == 'posix':
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import platutils_posix as _platutils
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elif sys.platform == 'win32':
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import platutils_win32 as _platutils
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else:
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import platutils_dummy as _platutils
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import warnings
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warnings.warn("Platutils not available for platform '%s', some features may be missing" %
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os.name)
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del warnings
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# Functionality that's logically common to all platforms goes here, each
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# platform-specific module only provides the bits that are OS-dependent.
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# XXX - I'm still not happy with a module global for this, but at least now
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# there is a public, cross-platform way of toggling the term title control on
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# and off. We should make this a stateful object later on so that each user
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# can have its own instance if needed.
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def toggle_set_term_title(val):
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"""Control whether set_term_title is active or not.
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set_term_title() allows writing to the console titlebar. In embedded
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widgets this can cause problems, so this call can be used to toggle it on
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or off as needed.
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The default state of the module is for the function to be disabled.
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Parameters
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----------
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val : bool
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If True, set_term_title() actually writes to the terminal (using the
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appropriate platform-specific module). If False, it is a no-op.
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"""
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_platutils.ignore_termtitle = not(val)
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def set_term_title(title):
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"""Set terminal title using the necessary platform-dependent calls."""
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if _platutils.ignore_termtitle:
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return
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_platutils.set_term_title(title)
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class FindCmdError(Exception):
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pass
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def find_cmd(cmd):
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"""Find full path to executable cmd in a cross platform manner.
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This function tries to determine the full path to a command line program
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using `which` on Unix/Linux/OS X and `win32api` on Windows. Most of the
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time it will use the version that is first on the users `PATH`. If
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cmd is `python` return `sys.executable`.
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Parameters
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----------
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cmd : str
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The command line program to look for.
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"""
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if cmd == 'python':
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return sys.executable
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try:
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path = _platutils.find_cmd(cmd)
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except:
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raise FindCmdError('command could not be found: %s' % cmd)
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# which returns empty if not found
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if path == '':
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raise FindCmdError('command could not be found: %s' % cmd)
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return path
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#-----------------------------------------------------------------------------
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# Deprecated functions
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#-----------------------------------------------------------------------------
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def freeze_term_title():
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warnings.warn("This function is deprecated, use toggle_set_term_title()")
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_platutils.ignore_termtitle = True
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