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# -*- coding: utf-8 -*-
#!/usr/bin/python -tt
#
# Copyright 2012 Raphaël Beamonte <raphael.beamonte@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# For the avoidance of doubt the "preferred form" of this code is one which
# is in an open unpatent encumbered format. Where cryptographic key signing
# forms part of the process of creating an executable the information
# including keys needed to generate an equivalently functional executable
# are deemed to be part of the source code.
#
import os
import os.path
pathSave={}
def getcmdpath(which):
"""
getcmdpath is a method which allows finding an executable in the PATH
directories to call it from full path
"""
if not pathSave.has_key(which):
for path in os.environ['PATH'].split(':'):
cmdfile = os.path.join(path, which)
if os.path.isfile(cmdfile) and os.access(cmdfile, os.X_OK):
pathSave[which] = cmdfile
break
if not pathSave[which]:
raise RuntimeError, "Command '%s' is unknown on this system" % which
return pathSave[which]
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