1	# oil-builtin-argparse
2	#
3	# Some thoughts before writing code. Hm can we do this entirely in user code, not as a builtin?
4	#
5	# The following is as close as possible to the python argparse which seems to work well
6
7	#### Argparse boolsche option and positional
8	hay define ArgSpec
9	hay define ArgSpec/Arg
10
11	ArgSpec myspec {
12	Arg -v --verbose { type = Bool }
13	Arg src
14	Arg dst
15	}
16	var args = ['-v', 'src/path', 'dst/path']
17	argparse (myspec, args, :opts)
18
19	json write (opts)
20	json write (args)
21	## STDOUT:
22	{
23	"verbose": true,
24	"src": "src/path",
25	"dst": "dst/path"
26	}
27	# TODO: Should this be empty afterwards? Is it even possible with above call?
28	[
29
30	]
31	## END
32
33	#### Argparse basic help message
34	hay define ArgSpec
35	hay define ArgSpec/Arg
36
37	ArgSpec myspec {
38	description = '''
39	Reference Implementation
40	'''
41	prog = "program-name"
42	Arg -v --verbose { type = Bool; help = "Verbose" }
43	Arg src
44	Arg dst
45	}
46	var args = ['-h', 'src', 'dst']
47
48	argparse (myspec, args, :opts)
49	## STDOUT:
50	usage: program-name [-h] [-v] src dst
51
52	Reference Implementation
53
54	positional arguments:
55	src
56	dst
57
58	options:
59	-h, --help show this help message and exit
60	-v, --verbose Verbose
61	## END