How can I get keyboard input data in Go?

huangapple
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英文:

How can I get keyboard input data in Go?

问题

我想要能够在Go语言中判断用户是否按下类似<kbd>Ctrl</kbd>+[某些键]或<kbd>Esc</kbd>这样的键盘按键。该程序在终端中运行于Linux环境中。

英文:

I want to be able to tell if a user presses things like <kbd>Ctrl</kbd>+[something] or <kbd>Esc</kbd> on their keyboard in Go. The program runs in a Linux environment inside a terminal.

答案1

得分: 3

  1. 如果你只想简单地读取字符串或字节，可以这样做：
  1. in := bufio.NewScanner(os.Stdin)
  2. data := in.Bytes()
  1. 如果你想捕获系统的信号量，可以通过注册信号量监视器来获取它：
  1. signal.Notify(os.Interrupt, os.Kill) // os.Interrupt=0x2 os.Kill=0x9
  1. 从按键获取 ASCII 码（跨平台）（使用 github.com/nsf/termbox-go）：
  1. import (
  2. 	"fmt"
  3. 	term "github.com/nsf/termbox-go"
  4. )
  6. func main() {
  7. 	err := term.Init()
  8. 	if err != nil {
  9. 		panic(err)
  10. 	}
  11. 	defer term.Close()
  13. 	for {
  14. 		switch ev := term.PollEvent(); ev.Type {
  15. 		case term.EventKey:
  16. 			switch ev.Key {
  17. 			case term.KeyEsc:
  18. 				term.Sync()
  19. 				fmt.Println("ESC pressed")
  20. 			case term.KeyF1:
  21. 				term.Sync()
  22. 				fmt.Println("F1 pressed")
  23. 			case term.KeyInsert:
  24. 				term.Sync()
  25. 				fmt.Println("Insert pressed")
  26. 			case term.KeyDelete:
  27. 				term.Sync()
  28. 				fmt.Println("Delete pressed")
  29. 			case term.KeyHome:
  30. 				term.Sync()
  31. 				fmt.Println("Home pressed")
  32. 			case term.KeyEnd:
  33. 				term.Sync()
  34. 				fmt.Println("End pressed")
  35. 			case term.KeyPgup:
  36. 				term.Sync()
  37. 			case term.KeyArrowRight:
  38. 				term.Sync()
  39. 				fmt.Println("Arrow Right pressed")
  40. 			case term.KeySpace:
  41. 				term.Sync()
  42. 				fmt.Println("Space pressed")
  43. 			case term.KeyBackspace:
  44. 				term.Sync()
  45. 				fmt.Println("Backspace pressed")
  46. 			case term.KeyEnter:
  47. 				term.Sync()
  48. 				fmt.Println("Enter pressed")
  49. 			case term.KeyTab:
  50. 				term.Sync()
  51. 				fmt.Println("Tab pressed")
  53. 			default:
  54. 				term.Sync()
  55. 				fmt.Println("ASCII : ", ev.Ch)
  57. 			}
  58. 		case term.EventError:
  59. 			panic(ev.Err)
  60. 		}
  61. 	}
  62. }
  1. 读取单个字符：
  1. consoleReader := bufio.NewReaderSize(os.Stdin, 1)
  2. input, _ := consoleReader.ReadByte()
  3. ascii := input
  5. // ESC = 27 and Ctrl-C = 3
  6. if ascii == 27 || ascii == 3 {
  7. 	fmt.Println("Exiting...")
  8. 	os.Exit(0)
  9. }
  11. fmt.Println("ASCII : ", ascii)

Golang 从标准输入读取
从按键获取 ASCII 码

英文:
  1. If you just want to simply read the string or bytes, you can do this
  1. in := bufio.NewScanner(os.Stdin)
  2. data := in.Bytes()
  1. If you want to capture the system semaphore, you can get it by registering the semaphore monitor
  1. signal.Notify(os.Interrupt, os.Kill) // os.Interrupt=0x2 os.Kill=0x9
  1. Get ASCII code from a key press(cross-platform) (use github.com/nsf/termbox-go)
  1. import (
  2. 	&quot;fmt&quot;
  3. 	term &quot;github.com/nsf/termbox-go&quot;
  4. )
  6. func main() {
  7. 	err := term.Init()
  8. 	if err != nil {
  9. 		panic(err)
  10. 	}
  11. 	defer term.Close()
  13. 	for {
  14. 		switch ev := term.PollEvent(); ev.Type {
  15. 		case term.EventKey:
  16. 			switch ev.Key {
  17. 			case term.KeyEsc:
  18. 				term.Sync()
  19. 				fmt.Println(&quot;ESC pressed&quot;)
  20. 			case term.KeyF1:
  21. 				term.Sync()
  22. 				fmt.Println(&quot;F1 pressed&quot;)
  23. 			case term.KeyInsert:
  24. 				term.Sync()
  25. 				fmt.Println(&quot;Insert pressed&quot;)
  26. 			case term.KeyDelete:
  27. 				term.Sync()
  28. 				fmt.Println(&quot;Delete pressed&quot;)
  29. 			case term.KeyHome:
  30. 				term.Sync()
  31. 				fmt.Println(&quot;Home pressed&quot;)
  32. 			case term.KeyEnd:
  33. 				term.Sync()
  34. 				fmt.Println(&quot;End pressed&quot;)
  35. 			case term.KeyPgup:
  36. 				term.Sync()
  37. 			case term.KeyArrowRight:
  38. 				term.Sync()
  39. 				fmt.Println(&quot;Arrow Right pressed&quot;)
  40. 			case term.KeySpace:
  41. 				term.Sync()
  42. 				fmt.Println(&quot;Space pressed&quot;)
  43. 			case term.KeyBackspace:
  44. 				term.Sync()
  45. 				fmt.Println(&quot;Backspace pressed&quot;)
  46. 			case term.KeyEnter:
  47. 				term.Sync()
  48. 				fmt.Println(&quot;Enter pressed&quot;)
  49. 			case term.KeyTab:
  50. 				term.Sync()
  51. 				fmt.Println(&quot;Tab pressed&quot;)
  53. 			default:
  54. 				term.Sync()
  55. 				fmt.Println(&quot;ASCII : &quot;, ev.Ch)
  57. 			}
  58. 		case term.EventError:
  59. 			panic(ev.Err)
  60. 		}
  61. 	}
  62. }
  1. Read single characters
  1. consoleReader := bufio.NewReaderSize(os.Stdin, 1)
  2. input, _ := consoleReader.ReadByte()
  3. ascii := input
  5. // ESC = 27 and Ctrl-C = 3
  6. if ascii == 27 || ascii == 3 {
  7. 	fmt.Println(&quot;Exiting...&quot;)
  8. 	os.Exit(0)
  9. }
  11. fmt.Println(&quot;ASCII : &quot;, ascii)

> Golang reading from stdin
> Get ASCII code from a key press

huangapple
  • 本文由 发表于 2021年12月21日 13:32:07
  • 转载请务必保留本文链接：https://go.coder-hub.com/70431051.html
  • go
  • keyboard
  • linux
  • raw
  • terminal
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