-
-
Notifications
You must be signed in to change notification settings - Fork 843
/
inputmapping.go
79 lines (70 loc) · 2.03 KB
/
inputmapping.go
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
package util
import (
"fmt"
"strings"
)
// The input mapping is expressed on the command line as `key1:value1,key2:value2,...`
// We parse it here, but need to keep in mind that keys or values may contain
// commas and colons. We will allow escaping those using double quotes, so
// when passing in "key1":"value1", we will not look inside the quoted sections.
func ParseCommandlineMap(src string) (map[string]string, error) {
result := make(map[string]string)
tuples := splitString(src, ',')
for _, t := range tuples {
kv := splitString(t, ':')
if len(kv) != 2 {
return nil, fmt.Errorf("expected key:value, got :%s", t)
}
key := strings.TrimLeft(kv[0], `"`)
key = strings.TrimRight(key, `"`)
value := strings.TrimLeft(kv[1], `"`)
value = strings.TrimRight(value, `"`)
result[key] = value
}
return result, nil
}
// ParseCommandLineList parses comma separated string lists which are passed
// in on the command line. Spaces are trimmed off both sides of result
// strings.
func ParseCommandLineList(input string) []string {
input = strings.TrimSpace(input)
if len(input) == 0 {
return nil
}
splitInput := strings.Split(input, ",")
args := make([]string, 0, len(splitInput))
for _, s := range splitInput {
s = strings.TrimSpace(s)
if len(s) > 0 {
args = append(args, s)
}
}
return args
}
// splitString splits a string along the specified separator, but it
// ignores anything between double quotes for splitting. We do simple
// inside/outside quote counting. Quotes are not stripped from output.
func splitString(s string, sep rune) []string {
const escapeChar rune = '"'
var parts []string
var part string
inQuotes := false
for _, c := range s {
if c == escapeChar {
if inQuotes {
inQuotes = false
} else {
inQuotes = true
}
}
// If we've gotten the separator rune, consider the previous part
// complete, but only if we're outside of quoted sections
if c == sep && !inQuotes {
parts = append(parts, part)
part = ""
continue
}
part += string(c)
}
return append(parts, part)
}