1 package main
2
3 import (
4 "errors"
5 "fmt"
6 "strings"
7 "unicode"
8 "unicode/utf8"
9 )
10
11 func splitCFlagsFromArgs(in []string) (args, cflags []string) {
12 for i, arg := range in {
13 if arg == "--" {
14 return in[:i], in[i+1:]
15 }
16 }
17
18 return in, nil
19 }
20
21 func splitArguments(in string) ([]string, error) {
22 var (
23 result []string
24 builder strings.Builder
25 escaped bool
26 delim = ' '
27 )
28
29 for _, r := range strings.TrimSpace(in) {
30 if escaped {
31 builder.WriteRune(r)
32 escaped = false
33 continue
34 }
35
36 switch r {
37 case '\\':
38 escaped = true
39
40 case delim:
41 current := builder.String()
42 builder.Reset()
43
44 if current != "" || delim != ' ' {
45
46
47 result = append(result, current)
48 }
49 delim = ' '
50
51 case '"', '\'', ' ':
52 if delim == ' ' {
53 delim = r
54 continue
55 }
56
57 fallthrough
58
59 default:
60 builder.WriteRune(r)
61 }
62 }
63
64 if delim != ' ' {
65 return nil, fmt.Errorf("missing `%c`", delim)
66 }
67
68 if escaped {
69 return nil, errors.New("unfinished escape")
70 }
71
72
73 if builder.Len() > 0 {
74 result = append(result, builder.String())
75 }
76
77 return result, nil
78 }
79
80 func toUpperFirst(str string) string {
81 first, n := utf8.DecodeRuneInString(str)
82 return string(unicode.ToUpper(first)) + str[n:]
83 }
84
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