119 lines
2.2 KiB
Go
119 lines
2.2 KiB
Go
package gobot
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import (
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"encoding/json"
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"github.com/tarm/goserial"
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"io"
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"math"
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"math/rand"
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"net"
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"reflect"
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"regexp"
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"time"
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)
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type Port io.ReadWriteCloser
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func Every(t string, f func()) {
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dur := parseDuration(t)
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go func() {
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for {
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time.Sleep(dur)
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go f()
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}
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}()
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}
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func After(t string, f func()) {
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dur := parseDuration(t)
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go func() {
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time.Sleep(dur)
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f()
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}()
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}
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func Publish(c chan interface{}, val interface{}) {
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select {
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case c <- val:
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default:
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}
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}
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func On(c chan interface{}, f func(s interface{})) {
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go func() {
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for s := range c {
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f(s)
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}
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}()
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}
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func parseDuration(t string) time.Duration {
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dur, err := time.ParseDuration(t)
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if err != nil {
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panic(err)
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}
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return dur
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}
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func Rand(max int) int {
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rand.Seed(time.Now().UTC().UnixNano())
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return rand.Intn(max)
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}
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func ConnectToTcp(port string) io.ReadWriteCloser {
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tcpPort, err := net.Dial("tcp", port)
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if err != nil {
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panic(err)
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}
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return tcpPort
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}
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func ConnectToSerial(port string, baud int) io.ReadWriteCloser {
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c := &serial.Config{Name: port, Baud: baud}
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s, err := serial.OpenPort(c)
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if err != nil {
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panic(err)
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}
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return s
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}
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func IsUrl(url string) bool {
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rp := regexp.MustCompile("([^A-Za-z0-9]+).([^A-Za-z0-9]+).([^A-Za-z0-9]+)")
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return rp.MatchString(url)
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}
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func Call(thing interface{}, method string, params ...interface{}) []reflect.Value {
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in := make([]reflect.Value, len(params))
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for k, param := range params {
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in[k] = reflect.ValueOf(param)
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}
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return reflect.ValueOf(thing).MethodByName(method).Call(in)
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}
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func FieldByName(thing interface{}, field string) reflect.Value {
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return reflect.ValueOf(thing).FieldByName(field)
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}
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func FieldByNamePtr(thing interface{}, field string) reflect.Value {
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return reflect.ValueOf(thing).Elem().FieldByName(field)
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}
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func toJson(obj interface{}) string {
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b, _ := json.Marshal(obj)
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return string(b)
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}
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func FromScale(input, min, max float64) float64 {
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return (input - math.Min(min, max)) / (math.Max(min, max) - math.Min(min, max))
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}
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func ToScale(input, min, max float64) float64 {
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i := input*(math.Max(min, max)-math.Min(min, max)) + math.Min(min, max)
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if i < math.Min(min, max) {
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return math.Min(min, max)
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} else if i > math.Max(min, max) {
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return math.Max(min, max)
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} else {
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return i
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}
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}
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