1	#!/bin/bash
2
3	# NOTE:
4	# -declare -A is required.
5	#
6	# Simply doing:
7	# a=([aa]=b [foo]=bar ['a+1']=c)
8	# gets utterly bizarre behavior.
9	#
10	# Associtative Arrays are COMPLETELY bash-specific. mksh doesn't even come
11	# close. So I will probably not implement them, or implement something
12	# slightly different, because the semantics are just wierd.
13
14	# http://www.gnu.org/software/bash/manual/html_node/Arrays.html
15	# TODO: Need a SETUP section.
16
17	### TODO: SETUP should be share
18	declare -A a
19	a=([aa]=b [foo]=bar ['a+1']=c)
20
21	### retrieve indices with !
22	declare -A a
23	a=([aa]=b [foo]=bar ['a+1']=c)
24	argv.py "${!a[@]}"
25	# Is this invalid on associative arrays? Makes no sense.
26	# stdout: ['aa', 'foo', 'a+1']
27
28	### $a gives nothing
29	declare -A a
30	a=([aa]=b [foo]=bar ['a+1']=c)
31	echo "${a}"
32	# stdout-json: "\n"
33
34	### length of dict does not work
35	declare -A a
36	a=([aa]=b [foo]=bar ['a+1']=c)
37	echo "${#a}"
38	# stdout: 0
39
40	### index by number doesn't work
41	declare -A a
42	a=([aa]=b [foo]=bar ['a+1']=c)
43	echo 0 "${a[0]}" 1 "${a[1]}" 2 "${a[2]}"
44	# stdout-json: "0 1 2 \n"
45
46	### index by key name
47	declare -A a
48	a=([aa]=b [foo]=bar ['a+1']=c)
49	echo "${a[aa]}" "${a[foo]}" "${a['a+1']}"
50	# WTF: Why do we get bar bar c?
51	# stdout-json: "b bar c\n"
52
53	### index by quoted string
54	declare -A a
55	a=([aa]=b [foo]=bar ['a+1']=c)
56	echo "${a['a+1']}"
57	# stdout: c
58
59	### index by unquoted string
60	declare -A a
61	a=([aa]=b [foo]=bar ['a+1']=c)
62	echo "${a[a+1]}"
63	# stdout: c
64
65	### index by unquoted string as arithmetic
66	# For assoc arrays, unquoted string is just raw.
67	# For regular arrays, unquoted string is an arithmetic expression!
68	# How do I parse this?
69	declare -A assoc
70	assoc=([a+1]=c)
71	array=(5 6 7)
72	a=1
73	echo "${assoc[a]}"
74	echo "${assoc[a+1]}" # This works
75	echo "${array[a+1]}"
76	# stdout-json: "\nc\n7\n"
77
78	### WTF index by key name
79	declare -A a
80	a=([xx]=bb [cc]=dd)
81	echo "${a[xx]}" "${a[cc]}"
82	# stdout-json: "bb dd\n"
83
84	### Array stored in associative array gets converted to string
85	array=('1 2' 3)
86	declare -A d
87	d[a]="${array[@]}"
88	argv.py "${d[a]}"
89	# stdout: ['1 2 3']
90
91	### Can't initialize assoc array with indexed array
92	declare -A A=(1 2 3)
93	# status: 1
94	# BUG bash status: 0
95
96	### Initializing indexed array with with assoc array drops the constants
97	declare -a a=([xx]=1 [yy]=2 [zz]=3)
98	#declare -a a=(1 2 3)
99	echo "${a[@]}"
100	#echo "${!a[@]}"
101	# N-I mksh stdout-json: ""
102	# BUG bash stdout-json: "3\n"