blob: d215a9975b40029b6491ee35cd1abc2a0f351d2b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
#!/bin/sh
usage () {
printf "Usage $0 "
echo << "EOF"
OPTIONS... [FILTER]
Print the parsed config file filtering by the keys
Arguments:
-f file read configuration from a file, uses /dev/sdtin otherwise
-v only print values
-c n print the last [n]
EOF
}
# parse a single config file line
#
parse_line() {
[ "$#" = 0 ] && return
local line="$@"
local key=$1
shift
local value="$@"
value=${value%#*}
case $key in
"include")
cat $value | parse
return
;;
"]")
IFS=.
set -- $list
list="${*%${!#}}"
IFS=" "
printf "\n"
return
;;
"}")
[ "$level" = "${level%.*}" ] &&
level="" || level=${level%.*}
return
;;
esac
case ${value##* } in
"{")
level="${level}${level:+.}${key}"
;;
"[")
list="${list}${list:+.}${key}"
printf "$level${level:+.}$key:"
;;
*)
[ "${#list}" = "0" ] &&
printf "$level${level:+.}$key:$value\n" ||
printf "$line "
;;
esac
}
# print the parsed values from the config file in key:value format
#
parse () {
local file="$1"
export level=""
export list=""
while IFS= read -r line; do
parse_line $line
done < "/dev/stdin"
}
# Use the env variable if exists
[ -z ${CONF_FILE} ] && CONF_FILE="/dev/stdin"
# initialise options
print_keys=true
count=
while getopts ":f:c:v" opt; do
case "${opt}" in
f)
[ "${OPTARG}" = "-" ] &&
CONF_FILE="/dev/stdin" ||
CONF_FILE="${OPTARG}"
;;
v)
print_keys=false
;;
c)
count="${OPTARG}q"
;;
*)
esac
done
shift $((OPTIND-1))
[ $# = 0 ] &&
pattern=".*" ||
pattern=$(echo $@ | sed "s/\*/[^:]*/g")
$print_keys &&
pattern="s/^($pattern:.+)/\1/p;${count}" ||
pattern="s/^$pattern:(.+)/\1/p;${count}"
# strip whitespace
sed "s/^\s*#.*$\|\s(\s\+)\|^\s\|\s^\|;*$//g" $CONF_FILE |
parse $@ |
sed -rn $pattern
|
