- 1 year ago
How to read a char with Golang in Windows without requiring return key?
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In Golang, you can use the golang.org/x/term
package to read a single character from the console in Windows without requiring the user to press the return key. Here's an example of how you can achieve this:
gopackage main
import (
"fmt"
"os"
"golang.org/x/term"
)
func main() {
// Get the terminal file descriptor
fd := int(os.Stdin.Fd())
// Set the terminal to raw mode
oldState, err := term.MakeRaw(fd)
if err != nil {
fmt.Println("Failed to set raw mode:", err)
return
}
defer term.Restore(fd, oldState)
// Read a single character from the console
var buf [1]byte
_, err = os.Stdin.Read(buf[:])
if err != nil {
fmt.Println("Failed to read character:", err)
return
}
// Print the character read
fmt.Println("Character:", string(buf[:]))
}
The code above uses the term.MakeRaw
function to set the terminal to raw mode, which allows reading characters without requiring the return key. It then reads a single character from os.Stdin
into a byte buffer. Finally, it prints the character read.
Note that the golang.org/x/term
package is not part of the standard library, so you need to install it using the following command:
arduinogo get golang.org/x/term
By using this approach, you can read a single character from the console without waiting for the return key in a Windows environment.