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
- 如果你只想简单地读取字符串或字节，可以这样做：
in := bufio.NewScanner(os.Stdin)
data := in.Bytes()
- 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：
signal.Notify(os.Interrupt, os.Kill) // os.Interrupt=0x2 os.Kill=0x9
- 从按键获取 ASCII 码（跨平台）（使用 github.com/nsf/termbox-go）：
import (
"fmt"
term "github.com/nsf/termbox-go"
)
func main() {
err := term.Init()
if err != nil {
panic(err)
}
defer term.Close()
for {
switch ev := term.PollEvent(); ev.Type {
case term.EventKey:
switch ev.Key {
case term.KeyEsc:
term.Sync()
fmt.Println("ESC pressed")
case term.KeyF1:
term.Sync()
fmt.Println("F1 pressed")
case term.KeyInsert:
term.Sync()
fmt.Println("Insert pressed")
case term.KeyDelete:
term.Sync()
fmt.Println("Delete pressed")
case term.KeyHome:
term.Sync()
fmt.Println("Home pressed")
case term.KeyEnd:
term.Sync()
fmt.Println("End pressed")
case term.KeyPgup:
term.Sync()
case term.KeyArrowRight:
term.Sync()
fmt.Println("Arrow Right pressed")
case term.KeySpace:
term.Sync()
fmt.Println("Space pressed")
case term.KeyBackspace:
term.Sync()
fmt.Println("Backspace pressed")
case term.KeyEnter:
term.Sync()
fmt.Println("Enter pressed")
case term.KeyTab:
term.Sync()
fmt.Println("Tab pressed")
default:
term.Sync()
fmt.Println("ASCII : ", ev.Ch)
}
case term.EventError:
panic(ev.Err)
}
}
}
- 读取单个字符：
consoleReader := bufio.NewReaderSize(os.Stdin, 1)
input, _ := consoleReader.ReadByte()
ascii := input
// ESC = 27 and Ctrl-C = 3
if ascii == 27 || ascii == 3 {
fmt.Println("Exiting...")
os.Exit(0)
}
fmt.Println("ASCII : ", ascii)
英文:
- If you just want to simply read the string or bytes, you can do this
in := bufio.NewScanner(os.Stdin)
data := in.Bytes()
- If you want to capture the system semaphore, you can get it by registering the semaphore monitor
signal.Notify(os.Interrupt, os.Kill) // os.Interrupt=0x2 os.Kill=0x9
- Get ASCII code from a key press(cross-platform) (use github.com/nsf/termbox-go)
import (
"fmt"
term "github.com/nsf/termbox-go"
)
func main() {
err := term.Init()
if err != nil {
panic(err)
}
defer term.Close()
for {
switch ev := term.PollEvent(); ev.Type {
case term.EventKey:
switch ev.Key {
case term.KeyEsc:
term.Sync()
fmt.Println("ESC pressed")
case term.KeyF1:
term.Sync()
fmt.Println("F1 pressed")
case term.KeyInsert:
term.Sync()
fmt.Println("Insert pressed")
case term.KeyDelete:
term.Sync()
fmt.Println("Delete pressed")
case term.KeyHome:
term.Sync()
fmt.Println("Home pressed")
case term.KeyEnd:
term.Sync()
fmt.Println("End pressed")
case term.KeyPgup:
term.Sync()
case term.KeyArrowRight:
term.Sync()
fmt.Println("Arrow Right pressed")
case term.KeySpace:
term.Sync()
fmt.Println("Space pressed")
case term.KeyBackspace:
term.Sync()
fmt.Println("Backspace pressed")
case term.KeyEnter:
term.Sync()
fmt.Println("Enter pressed")
case term.KeyTab:
term.Sync()
fmt.Println("Tab pressed")
default:
term.Sync()
fmt.Println("ASCII : ", ev.Ch)
}
case term.EventError:
panic(ev.Err)
}
}
}
- Read single characters
consoleReader := bufio.NewReaderSize(os.Stdin, 1)
input, _ := consoleReader.ReadByte()
ascii := input
// ESC = 27 and Ctrl-C = 3
if ascii == 27 || ascii == 3 {
fmt.Println("Exiting...")
os.Exit(0)
}
fmt.Println("ASCII : ", ascii)
> Golang reading from stdin
> Get ASCII code from a key press
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