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#!/usr/bin/env python
#!/bin/env python
# $Id: parseargs.py,v 1.1 1999/11/12 22:30:17 balay Exp $
#
# Parses the argument list, and searches for the specified argument.
# It returns the argument list minus the parsed argument.
#
# Calling sequence:
# ret_flag,ret_val = parseargs(search_arg,nvals,arg_list)
# Input:
# search_arg - argument to search for
# nvals - number of values associated with this argument.
# currently supports nval = 0, 1
# arg_list - the list of arguments to parse
# Output:
# ret_flag - 0 => the search_arg is not present in arg_list
# 1 => search_arg is present in the arg_list
# ret_val - None if nvals = 0
# Value corresponding to search_arg, if nvals = 1
# arg_list - initialial arg_list minus the search_arg and ret_val
#
def parseargs(search_arg,return_nargs,arg_list):
import string
import sys
try:
index = arg_list.index(search_arg)
except:
# Argument not found in list, hence return flag = 0,return val = None
return 0,None
if return_nargs == 0:
arg_list.remove(search_arg)
return 1,None
if index+1 == len(arg_list):
print 'Error! Option has no value!'
print 'Expecting value with option: ' + search_arg
sys.exit()
else:
ret_arg = arg_list[index+1]
arg_list.remove(search_arg)
arg_list.remove(ret_arg)
return 1,ret_arg
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