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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.
package model
import (
"fmt"
"regexp"
"strings"
)
// OptionType describes the type of the option, possible values are 'Argument', 'Flag' or 'KeyValue'
type OptionType string
const (
// Argument ...
Argument OptionType = "Argument"
// Flag ...
Flag OptionType = "Flag"
// KeyValue ...
KeyValue OptionType = "KeyValue"
)
// Option describes an option of a autorest command line
type Option interface {
// Type returns the type of this option
Type() OptionType
// Format returns the actual option in string
Format() string
}
// ArgumentOption is an option not starting with '--' or '-'
type ArgumentOption interface {
Option
Argument() string
}
// FlagOption is an option that starts with '--' but do not have a value
type FlagOption interface {
Option
Flag() string
}
// KeyValueOption is an option that starts with '--' and have a value
type KeyValueOption interface {
Option
Key() string
Value() string
}
// NewOption returns an Option from a formatted string. We should hold this result using this function: input == result.Format()
func NewOption(input string) (Option, error) {
if strings.HasPrefix(input, "--") {
// this option is either a flag or a key value pair option
return parseFlagOrKeyValuePair(strings.TrimPrefix(input, "--"))
}
// this should be an argument
return argument{value: input}, nil
}
var flagRegex = regexp.MustCompile(`^[a-zA-Z]`)
func parseFlagOrKeyValuePair(input string) (Option, error) {
if !flagRegex.MatchString(input) {
return nil, fmt.Errorf("cannot parse flag '%s', a flag or option should only start with letters", input)
}
segments := strings.Split(input, "=")
if len(segments) <= 1 {
// this should be a flag
return flagOption{value: input}, nil
}
return keyValueOption{
key: segments[0],
value: strings.Join(segments[1:], "="),
}, nil
}
type argument struct {
value string
}
func (f argument) Type() OptionType {
return Argument
}
// Format ...
func (f argument) Format() string {
return f.value
}
func (f argument) Argument() string {
return f.value
}
func (f argument) String() string {
return f.Format()
}
var _ ArgumentOption = (*argument)(nil)
type flagOption struct {
value string
}
func (f flagOption) Type() OptionType {
return Flag
}
// Format ...
func (f flagOption) Format() string {
return fmt.Sprintf("--%s", f.value)
}
func (f flagOption) String() string {
return f.Format()
}
func (f flagOption) Flag() string {
return f.value
}
var _ FlagOption = (*flagOption)(nil)
type keyValueOption struct {
key string
value string
}
func (f keyValueOption) Type() OptionType {
return KeyValue
}
// Format ...
func (f keyValueOption) Format() string {
return fmt.Sprintf("--%s=%s", f.key, f.value)
}
func (f keyValueOption) String() string {
return f.Format()
}
func (f keyValueOption) Key() string {
return f.key
}
func (f keyValueOption) Value() string {
return f.value
}
var _ KeyValueOption = (*keyValueOption)(nil)
// NewArgument returns a new argument option (without "--")
func NewArgument(value string) Option {
return argument{
value: value,
}
}
// NewFlagOption returns a flag option (with "--", without value)
func NewFlagOption(flag string) Option {
return flagOption{
value: flag,
}
}
// NewKeyValueOption returns a key-value option like "--tag=something"
func NewKeyValueOption(key, value string) Option {
return keyValueOption{
key: key,
value: value,
}
}
|
