group18-HW-2-3-4-5.src.cli

" Helper class for parsing arguments

 1"""" 
 2    Helper class for parsing arguments
 3"""
 4import sys
 5
 6
 7class CLI:
 8
 9    def __init__(self):
10        self.allowed_args = {'-d', '-e', '-f', '-h', '-n', '-s', '--eg', '--dump', '--file', '--help', '--nums',
11                             '--seed'}
12
13    def parse_user_arguments(self, args):
14
15        arguments = []
16        arguments_values = []
17
18        # --help is an exception as we only show help and don't take input, so we process it first
19        if '-h' in args or '--help' in args:
20            showHelp()
21            args.remove("-h" if '-h' in args else "--help")
22
23        # odd indexes are cli options and even indexes are there corresponding values.
24        # we ignore the first index as it will be the filename.
25        for i in range(1, len(args)):
26            if i % 2 == 0:
27                arguments_values.append(args[i])
28            else:
29                arguments.append(args[i])
30
31        self.validate_user_input(arguments, arguments_values)
32        return arguments, arguments_values
33
34    def validate_user_input(self, input_arg_list, input_val_list):
35
36        if len(input_arg_list) != len(input_val_list):
37            sys.exit("The input arguments are not correct, please check!")
38
39        for argument in input_arg_list:
40            if argument not in self.allowed_args:
41                sys.exit(f"{argument} is not valid, please check!")
42
43
44def showHelp():
45    helper_string = """
46    CSV : summarized csv file
47
48    USAGE: python3 csv.py [OPTIONS]
49
50    OPTIONS:
51    −e −−eg start−up example = nothing
52    −d −−dump on test failure, exit with stack dump = false
53    −f −−file file with csv data = ../data/auto93.csv
54    −h −−help show help = false
55    −n −−nums number of nums to keep = 512
56    −s −−seed random number seed = 10019
57    """
58    print(helper_string)
class CLI: 
 8class CLI:
 9
10    def __init__(self):
11        self.allowed_args = {'-d', '-e', '-f', '-h', '-n', '-s', '--eg', '--dump', '--file', '--help', '--nums',
12                             '--seed'}
13
14    def parse_user_arguments(self, args):
15
16        arguments = []
17        arguments_values = []
18
19        # --help is an exception as we only show help and don't take input, so we process it first
20        if '-h' in args or '--help' in args:
21            showHelp()
22            args.remove("-h" if '-h' in args else "--help")
23
24        # odd indexes are cli options and even indexes are there corresponding values.
25        # we ignore the first index as it will be the filename.
26        for i in range(1, len(args)):
27            if i % 2 == 0:
28                arguments_values.append(args[i])
29            else:
30                arguments.append(args[i])
31
32        self.validate_user_input(arguments, arguments_values)
33        return arguments, arguments_values
34
35    def validate_user_input(self, input_arg_list, input_val_list):
36
37        if len(input_arg_list) != len(input_val_list):
38            sys.exit("The input arguments are not correct, please check!")
39
40        for argument in input_arg_list:
41            if argument not in self.allowed_args:
42                sys.exit(f"{argument} is not valid, please check!")
CLI() 
10    def __init__(self):
11        self.allowed_args = {'-d', '-e', '-f', '-h', '-n', '-s', '--eg', '--dump', '--file', '--help', '--nums',
12                             '--seed'}
def parse_user_arguments(self, args): 
14    def parse_user_arguments(self, args):
15
16        arguments = []
17        arguments_values = []
18
19        # --help is an exception as we only show help and don't take input, so we process it first
20        if '-h' in args or '--help' in args:
21            showHelp()
22            args.remove("-h" if '-h' in args else "--help")
23
24        # odd indexes are cli options and even indexes are there corresponding values.
25        # we ignore the first index as it will be the filename.
26        for i in range(1, len(args)):
27            if i % 2 == 0:
28                arguments_values.append(args[i])
29            else:
30                arguments.append(args[i])
31
32        self.validate_user_input(arguments, arguments_values)
33        return arguments, arguments_values
def validate_user_input(self, input_arg_list, input_val_list): 
35    def validate_user_input(self, input_arg_list, input_val_list):
36
37        if len(input_arg_list) != len(input_val_list):
38            sys.exit("The input arguments are not correct, please check!")
39
40        for argument in input_arg_list:
41            if argument not in self.allowed_args:
42                sys.exit(f"{argument} is not valid, please check!")
def showHelp(): 
45def showHelp():
46    helper_string = """
47    CSV : summarized csv file
48
49    USAGE: python3 csv.py [OPTIONS]
50
51    OPTIONS:
52    −e −−eg start−up example = nothing
53    −d −−dump on test failure, exit with stack dump = false
54    −f −−file file with csv data = ../data/auto93.csv
55    −h −−help show help = false
56    −n −−nums number of nums to keep = 512
57    −s −−seed random number seed = 10019
58    """
59    print(helper_string)