forked from charmbracelet/gum
-
Notifications
You must be signed in to change notification settings - Fork 0
/
zsh.go
146 lines (135 loc) Β· 3.47 KB
/
zsh.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
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
package completion
import (
"fmt"
"io"
"strings"
"github.com/alecthomas/kong"
)
// Zsh is zsh completion generator.
type Zsh struct{}
// Run generates zsh completion script.
func (z Zsh) Run(ctx *kong.Context) error {
var out strings.Builder
format := `#compdef %[1]s
# zsh completion for %[1]s
# generated by gum completion
`
fmt.Fprintf(&out, format, ctx.Model.Name)
z.gen(&out, ctx.Model.Node)
_, err := fmt.Fprint(ctx.Stdout, out.String())
if err != nil {
return fmt.Errorf("unable to generate zsh completion: %w", err)
}
return nil
}
func (z Zsh) writeFlag(buf io.StringWriter, f *kong.Flag) {
var str strings.Builder
str.WriteString(" ")
if f.Short != 0 {
str.WriteString("'(")
str.WriteString(fmt.Sprintf("-%c --%s", f.Short, f.Name))
if !f.IsBool() {
str.WriteString("=")
}
str.WriteString(")'")
str.WriteString("{")
str.WriteString(fmt.Sprintf("-%c,--%s", f.Short, f.Name))
if !f.IsBool() {
str.WriteString("=")
}
str.WriteString("}")
str.WriteString("\"")
} else {
str.WriteString("\"")
str.WriteString(fmt.Sprintf("--%s", f.Name))
if !f.IsBool() {
str.WriteString("=")
}
}
str.WriteString(fmt.Sprintf("[%s]", f.Help))
if !f.IsBool() {
str.WriteString(":")
str.WriteString(strings.ToLower(f.Help))
str.WriteString(":")
}
values := flagPossibleValues(f)
if len(values) > 0 {
str.WriteString("(")
for i, v := range f.EnumSlice() {
str.WriteString(v)
if i < len(values)-1 {
str.WriteString(" ")
}
}
str.WriteString(")")
}
str.WriteString("\"")
writeString(buf, str.String())
}
func (z Zsh) writeFlags(buf io.StringWriter, cmd *kong.Node) {
for i, f := range cmd.Flags {
if f.Hidden {
continue
}
z.writeFlag(buf, f)
if i < len(cmd.Flags)-1 {
writeString(buf, " \\\n")
}
}
}
func (z Zsh) writeCommand(buf io.StringWriter, c *kong.Node) {
writeString(buf, fmt.Sprintf(" \"%s[%s]\"", c.Name, c.Help))
}
func (z Zsh) writeCommands(buf io.StringWriter, cmd *kong.Node) {
for i, c := range cmd.Children {
if c == nil || c.Hidden {
continue
}
z.writeCommand(buf, c)
if i < len(cmd.Children)-1 {
_, _ = buf.WriteString(" \\")
}
writeString(buf, "\n")
}
}
func (z Zsh) gen(buf io.StringWriter, cmd *kong.Node) {
for _, c := range cmd.Children {
if c == nil || c.Hidden {
continue
}
z.gen(buf, c)
}
cmdName := commandName(cmd)
writeString(buf, fmt.Sprintf("_%s() {\n", cmdName))
if hasCommands(cmd) {
writeString(buf, " local line state\n")
}
writeString(buf, " _arguments -C \\\n")
z.writeFlags(buf, cmd)
if hasCommands(cmd) {
writeString(buf, " \\\n")
writeString(buf, " \"1: :->cmds\" \\\n")
writeString(buf, " \"*::arg:->args\"\n")
writeString(buf, " case \"$state\" in\n")
writeString(buf, " cmds)\n")
writeString(buf, fmt.Sprintf(" _values \"%s command\" \\\n", cmdName))
z.writeCommands(buf, cmd)
writeString(buf, " ;;\n")
writeString(buf, " args)\n")
writeString(buf, " case \"$line[1]\" in\n")
for _, c := range cmd.Children {
if c == nil || c.Hidden {
continue
}
writeString(buf, fmt.Sprintf(" %s)\n", c.Name))
writeString(buf, fmt.Sprintf(" _%s\n", commandName(c)))
writeString(buf, " ;;\n")
}
writeString(buf, " esac\n")
writeString(buf, " ;;\n")
writeString(buf, " esac\n")
}
// writeArgAliases(buf, cmd)
writeString(buf, "\n")
writeString(buf, "}\n\n")
}