问题描述
是否有一个类似于C的 getchar
的Go功能能够处理控制台中的Tab键?我想在控制台应用程序中完成某种操作。
Is there a Go function similar to C's getchar
able to handle tab press in console? I want to make some sort of completion in my console app.
推荐答案
C的 getchar()
示例:
#include <stdio.h>
void main()
{
char ch;
ch = getchar();
printf("Input Char Is :%c",ch);
}
等效项:
package main
import (
"bufio"
"fmt"
"os"
)
func main() {
reader := bufio.NewReader(os.Stdin)
input, _ := reader.ReadString('\n')
fmt.Printf("Input Char Is : %v", string([]byte(input)[0]))
// fmt.Printf("You entered: %v", []byte(input))
}
最后评论这行代码仅显示当您按下 tab
时,第一个元素是U + 0009('CHARACTER TABULATION')。
The last commented line just shows that when you press tab
the first element is U+0009 ('CHARACTER TABULATION').
但是,出于您的需要(检测选项卡),C的 getchar()
不适合,因为它要求用户点击输入。您需要的是@miku提到的ncurses的getch()/ readline / jLine之类的东西。有了这些,您实际上可以等待一次击键。
However for your needs (detecting tab) C's getchar()
is not suitable as it requires the user to hit enter. What you need is something like ncurses' getch()/ readline/ jLine as mentioned by @miku. With these, you actually wait for a single keystroke.
因此,您有多种选择:
-
使用
ncurses
/readline
绑定,例如或类似的内容,例如
Use
ncurses
/readline
binding, for example https://code.google.com/p/goncurses/ or equivalent like https://github.com/nsf/termbox
滚动自己的语言,请参见
Roll your own see http://play.golang.org/p/plwBIIYiqG for starting point
使用 os.Exec
运行stty或jLine。
use os.Exec
to run stty or jLine.
裁判:
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