go-nativenotify

Native notifications in Go
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notify_common.go (777B)

      1 package nativenotify
      2 
      3 import (
      4 	"encoding/hex"
      5 	"sync"
      6 	"sync/atomic"
      7 )
      8 
      9 var (
     10 	nextID    atomic.Int64
     11 	callbacks sync.Map
     12 )
     13 
     14 func callbacksTake(m *sync.Map, id string) (Callback, bool) {
     15 	v, ok := m.LoadAndDelete(id)
     16 	if !ok {
     17 		return nil, false
     18 	}
     19 	cb, ok := v.(Callback)
     20 	if !ok {
     21 		return nil, false
     22 	}
     23 	return cb, true
     24 }
     25 
     26 func callbacksPut(m *sync.Map, id string, fn Callback) {
     27 	m.Store(id, fn)
     28 }
     29 
     30 // take returns the first element.
     31 func take[S ~[]E, E any](s *S) (e E, ok bool) {
     32 	if len(*s) == 0 {
     33 		return e, false
     34 	}
     35 	defer func() { *s = (*s)[1:] }()
     36 	return (*s)[0], true
     37 }
     38 
     39 // decode from hex.
     40 func decode(s string) string {
     41 	b, _ := hex.DecodeString(s)
     42 	return string(b)
     43 }
     44 
     45 // encode to hex.
     46 func encode(s string) string {
     47 	return hex.EncodeToString([]byte(s))
     48 }