# MkPyCmd.py
# Copyright 2005 by James M Jinkins --- Released to the Public Domain.
# email address: jim -dot_ jinkins -at_ comports -dot_ com
progDoc = r"""MkPyCmd.py generates a command file to execute a Python program.
The windows command file will have the same filename as the Python program, but
will have a '.cmd' extension instead of '.py.. It will pass its command line
arguments to the Python program.
Note:
usage: python [py_path\]python_program [cmd_path]
where
py_path Optional path to the python program. Default is the
current directory.
python_program Python program. Since the extension must be .py,
it is not required.
cmd_path Optional path to the generated command file. Default is
the current directory. Generate it in a directory in the
PATH environment variable.
The command
python C:\PyLib\MkPyCmd.py C:\PyLib\my_prog C:\cmd
generates file C:\cmd\my_prog.cmd, which contains this line:
python "C:\PyLib\my_prog.py" %*
"""
import os
import sys
def displayErrMsgExit(msg = ''):
print progDoc
if msg:
print "\nError: %s" % msg
sys.exit(1)
if (len(sys.argv) < 2 or sys.argv[1].lower() == '-h' or
sys.argv[1].lower() == '--help'):
displayErrMsgExit()
if len(sys.argv) > 3:
displayErrMsgExit("Too many command line arguments")
pyProgram = sys.argv[1]
pyProgPath = os.path.abspath(pyProgram)
pyPath, pyFilespec = os.path.split(pyProgPath)
pyFilename, pyExt = os.path.splitext(pyFilespec)
if pyExt.lower() == '.py':
cmdFilespec = pyFilename + '.cmd'
else:
cmdFilespec = pyFilespec + '.cmd'
pyProgPath += '.py'
if not os.path.isfile(pyProgPath):
displayErrMsgExit("python_program file '%s' not found" % pyProgramPath)
if len(sys.argv) > 2:
if not os.path.isdir(sys.argv[2]):
displayErrMsgExit("cmd_path arg '%s' is not a directory" %
sys.argv[2])
cmdPath = os.path.join(sys.argv[2], cmdFilespec)
else:
cmdPath = cmdFilespec
f = open(cmdPath, 'w')
print >>f, 'python "%s" %%*' % pyProgPath
f.close()
