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package main
import (
"bufio"
"fmt"
"os"
"time"
"golang.org/x/sys/unix"
"os/exec"
"strconv"
"strings"
"io/ioutil"
)
var (
data, connectedWiFi, memPercentage, cpuTemp, cpuPercentage, volumeLevel string
batteryLevel, chargingStatus string
text string = "\n"
moduleColor0, moduleColor1 string = "#9b1bed", "#ff0aa3"
)
func dataLoop() {
for {
data = getData()
time.Sleep(time.Second / 10)
}
}
func stdinLoop() {
reader := bufio.NewReader(os.Stdin)
for {
text, _ = reader.ReadString('\n')
}
}
// to update modules every 5 seconds
func fiveSecLoop() {
for {
memPercentage = getMemUsage()
cpuTemp = getCPUTemp()
cpuPercentage = getCPUUsage()
time.Sleep(time.Second * 5)
}
}
// to update modules every 10 seconds
func tenSecLoop() {
for {
connectedWiFi = getWiFiName()
chargingStatus, batteryLevel = getBatteryInfo()
time.Sleep(time.Second * 10)
}
}
// very creative name
// used to update modules like volume, etc
// don't want lag on those modules!
func veryFastLoop() {
for {
volumeLevel = getVolumeLevel()
time.Sleep(time.Second / 10)
}
}
func main() {
go dataLoop()
go stdinLoop()
go fiveSecLoop()
go tenSecLoop()
go veryFastLoop()
for {
fmt.Print(data + text)
time.Sleep(time.Second / 10)
}
}
func getData() string {
time := "%{F" + moduleColor0 + "} " + getTime() + "%{F-} "
wifiName := "%{F" + moduleColor1 + "} WiFI: " + connectedWiFi + "%{F-} "
rootFree := "%{F" + moduleColor0 + "} / " + getDisk("/") + "%%{F-} "
homeFree := "%{F" + moduleColor1 + "} /home " + getDisk("/home") + "%%{F-} "
hddFree := "%{F" + moduleColor0 + "} /hdd " + getDisk("/hdd") + "%%{F-} "
cpuUsage := "%{F" + moduleColor1 + "} CPU: " + cpuPercentage + "%%{F-} "
cpuTemp := "%{F" + moduleColor0 + "} TEMP: " + cpuTemp + "%{F-} "
memUsage := "%{F" + moduleColor1 + "} MEM: " + memPercentage + "%{F-} "
volume := "%{F" + moduleColor0 + "}"
if volumeLevel != "muted" {
volume = volume + "} VOL: " + volumeLevel + "%{F-} "
} else {
volume = volume + "} MUTED%{F-} "
}
// shows battery level in different color
// depending on charging status
// hidden when full
var battery string
btlvl, _ := strconv.Atoi(batteryLevel)
if btlvl < 100 {
col := moduleColor1
if chargingStatus == "Charging" { col = moduleColor0 }
battery = fmt.Sprintf("%%{F%s} BATT: %s%%{F-} ", col, batteryLevel)
}
// TODO add brightness (new)
return time + wifiName + rootFree + homeFree + hddFree + cpuUsage + cpuTemp + "%{r}" + memUsage + battery
}
func getWiFiName() string {
// script located in ~/.scripts/
// look at github.com/MikunoNaka/dots
cmd := exec.Command("get_wifi_name.sh")
name, _ := cmd.Output()
return string(name)
}
func getMemUsage() string {
// script located in ~/.scripts/
// look at github.com/MikunoNaka/dots
cmd := exec.Command("ram_usage.sh")
usage, _ := cmd.Output()
return string(usage)
}
func getCPUTemp() string {
// script located in ~/.scripts/
// look at github.com/MikunoNaka/dots
cmd := exec.Command("cpu_temp.sh")
temp, _ := cmd.Output()
return string(temp)
}
func getVolumeLevel() string {
// script located in ~/.scripts/
// look at github.com/MikunoNaka/dots
cmd := exec.Command("volume_level.sh")
level, _ := cmd.Output()
return string(level)
}
func getBatteryInfo() (string, string) {
// scripts located in ~/.scripts/
// look at github.com/MikunoNaka/dots
statCmd := exec.Command("charging_status.sh")
stat, _ := statCmd.Output()
levelCmd := exec.Command("battery_level.sh")
level, _ := levelCmd.Output()
return string(stat), string(level)
}
// TODO: maybe add dates on click
func getTime() string {
now := time.Now()
return now.Format(" 3:04 PM")
}
// TODO: maybe show percentages instead of free space
func getDisk(mountPoint string) string {
var stat unix.Statfs_t
unix.Statfs(mountPoint, &stat)
// this is witchcraft. I wrote this but I have -10000 idea how AND IF it works
totalSize := float64(stat.Blocks) * float64(stat.Bsize) / 1073741824
usedSpace := float64(stat.Bfree) * float64(stat.Bsize) / 1073741824
return strconv.FormatFloat((100 - (usedSpace / totalSize) * 100), 'f', 0, 64)
}
func getCPUSample() (idle, total uint64) {
contents, err := ioutil.ReadFile("/proc/stat")
if err != nil {
return
}
lines := strings.Split(string(contents), "\n")
for _, line := range(lines) {
fields := strings.Fields(line)
if fields[0] == "cpu" {
numFields := len(fields)
for i := 1; i < numFields; i++ {
val, err := strconv.ParseUint(fields[i], 10, 64)
if err != nil {
fmt.Println("Error: ", i, fields[i], err)
}
total += val // tally up all the numbers to get total ticks
if i == 4 { // idle is the 5th field in the cpu line
idle = val
}
}
return
}
}
return
}
func getCPUUsage() string {
idle0, total0 := getCPUSample()
time.Sleep(3 * time.Second)
idle1, total1 := getCPUSample()
idleTicks := float64(idle1 - idle0)
totalTicks := float64(total1 - total0)
cpuUsage := 100 * (totalTicks - idleTicks) / totalTicks
return strconv.Itoa(int(cpuUsage))
}
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