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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
package main
import (
"fmt"
"net"
"syscall"
"strings"
"strconv"
"os"
"os/exec"
"io/ioutil"
"time"
"github.com/BurntSushi/toml"
)
type Config struct {
Sections []string
Delay int
Separator string
IP IPConfig
Mounts MountConfig
Music MusicConfig
Clock ClockConfig
}
type IPConfig struct {
Label string
Interfaces []string
IPv4Only bool `toml:"ipv4only"`
}
type MountConfig struct {
Label string
MountPoints []string `toml:"mountpoints"`
}
type MusicConfig struct {
LabelPlaying string `toml:"labelplaying"`
LabelPaused string `toml:"labelpaused"`
LabelStopped string `toml:"labelstopped"`
Type string
}
type ClockConfig struct {
Label string
Format string
}
func diskSizes(config MountConfig) string {
var b strings.Builder
var statfs syscall.Statfs_t
const div = float64(1024 * 1024 * 1024)
const unit = "G"
sep := ""
for _, mount := range config.MountPoints {
b.WriteString(sep)
err := syscall.Statfs(mount, &statfs)
if err != nil {
panic(err)
}
availBytes := float64(statfs.Bavail * uint64(statfs.Bsize))
avail := strconv.FormatFloat(availBytes / div, 'f', 2, 64)
b.WriteString(fmt.Sprintf("%v : %v %v", mount, avail, unit))
sep = " "
}
return b.String()
}
func ips(config IPConfig) string {
var b strings.Builder
sep := ""
for _, interfaceName := range config.Interfaces {
b.WriteString(sep)
b.WriteString(interfaceName)
b.WriteString(": ")
if len(config.Interfaces) > 1 {
b.WriteString(" [")
}
b.WriteString(ip(interfaceName, config.IPv4Only))
if len(config.Interfaces) > 1 {
b.WriteString(" ]")
}
sep = " "
}
return b.String()
}
func ip(interfaceName string, IPv4Only bool) string {
var b strings.Builder
sep := ""
in, err := net.InterfaceByName(interfaceName)
if err != nil {
panic(err)
}
addrs, err := in.Addrs()
if err != nil {
panic(err)
}
for _, addr := range addrs {
var ip net.IP
switch v := addr.(type) {
case *net.IPAddr:
ip = v.IP
case *net.IPNet:
ip = v.IP
default:
}
if IPv4Only {
if ip.To4() != nil {
b.WriteString(sep)
b.WriteString(ip.String())
sep = " "
}
} else {
b.WriteString(sep)
b.WriteString(ip.String())
sep = " "
}
}
return b.String()
}
func clock(format string) string {
t := time.Now()
return t.Format(format)
}
func nowPlayingMPD() string {
cmd := exec.Command("mpc", "current")
out, err := cmd.Output()
if err != nil {
panic(err)
}
sOut := string(out)
sOut = strings.ReplaceAll(sOut, "\n", "")
return sOut
}
// Returns 0 if playing, 1 if paused and 2 if stopped
func statusMPD() int {
cmd := exec.Command("mpc", "status")
out, err := cmd.Output()
if err != nil {
return -1
}
sOut := string(out)
if strings.Contains(sOut, "playing") {
return 0
} else if strings.Contains(sOut, "paused") {
return 1
} else {
return 2
}
}
func buildClock(config ClockConfig) string {
var b strings.Builder
b.WriteString(config.Label)
b.WriteString(clock(config.Format))
return b.String()
}
func buildIP(config IPConfig) string {
var b strings.Builder
b.WriteString(config.Label)
b.WriteString("[ ")
b.WriteString(ips(config))
b.WriteString(" ]")
return b.String()
}
func buildMounts(config MountConfig) string {
var b strings.Builder
b.WriteString(config.Label)
b.WriteString("[ ")
b.WriteString(diskSizes(config))
b.WriteString(" ]")
return b.String()
}
func buildMusic(config MusicConfig) string {
var b strings.Builder
switch config.Type {
case "mpd":
isMPD := true
switch statusMPD() {
case 0:
b.WriteString(config.LabelPlaying)
case 1:
b.WriteString(config.LabelPaused)
case 2:
b.WriteString(config.LabelStopped)
default:
isMPD = false
}
if isMPD {
b.WriteString(nowPlayingMPD())
}
default:
}
return b.String()
}
func main() {
var configPath = "/etc/statusbar.conf"
var content []byte
var err error
if _, err := os.Stat(configPath); err != nil {
content, err = ioutil.ReadAll(os.Stdin)
} else {
content, err = ioutil.ReadFile(configPath)
}
if err != nil {
panic(err)
}
var config Config
_, err = toml.Decode(string(content), &config)
if err != nil {
panic(err)
}
for true {
var b strings.Builder
for i, section := range config.Sections {
switch section {
case "clock":
b.WriteString(buildClock(config.Clock))
case "ip":
b.WriteString(buildIP(config.IP))
case "mounts":
b.WriteString(buildMounts(config.Mounts))
case "music":
b.WriteString(buildMusic(config.Music))
default:
}
if i < len(config.Sections) - 1 {
b.WriteString(config.Separator)
}
}
fmt.Println(b.String())
time.Sleep(time.Duration(config.Delay) * time.Second)
}
}
|
