This is how I would do it. Note that you must be careful not to insert
newlines. If you do, terminal control becomes trickier.
package main
import "fmt"
// ClearLine is the CSI sequence to clear the entire of the current line.
const ClearLine = "\033[2K"
func main() {
// print a string that is comparatively long
fmt.Printf("hello world")
// clear line
fmt.Printf(ClearLine)
// the line is cleared but the cursor is in the wrong place. the
carriage
// return moves the cursor to the beginning of the line.
fmt.Printf("\r")
// print a shorter string to show that the longer string has been
cleared
fmt.Printf("bye")
// print a newline to move the cursor to next line of terminal
fmt.Printf("\n")
}
On Saturday, 19 September 2020 at 20:47:25 UTC+1 Alexander Mills wrote:
> Yeah sure so it looks like:
>
> clearCurrentLine() // clears the previous status line
> fmt.Println("foo")
> writeStatusLine() // writes new status line
>
> where clearCurrentLine() is just like
>
> func clearCurrentLine(){
> //fmt.Printf("\033[0;") // clear current line
> //fmt.Printf("\033[2K\r%d",0);
> //fmt.Fprint(os.Stdout,"\033[y;0H")
> //fmt.Fprint(os.Stdout, "\033[K")
> //fmt.Print("\x1b[2k") // erase the current line
> }
>
> I tried all those ANSI codes, nothing quite worked?
>
>
>
> On Saturday, September 19, 2020 at 12:36:04 PM UTC-7 iko...@gmail.com
> wrote:
>
>> Can you give some example code?
>>
>> *Joop Kiefte* - Chat @ Spike
>> <https://spikenow.com/r/a/?ref=spike-organic-signature&_ts=owiru>
>> [image: owiru]
>>
>> On September 19, 2020 at 19:29 GMT, Alex Mills <al...@channelmeter.com>
>> wrote:
>>
>>
>> Yeah I tried all those ANSI codes, nothing seems to work :(
>>
>> On Sat, Sep 19, 2020 at 11:59 AM Joop Kiefte <iko...@gmail.com> wrote:
>>
>>> I tend to do that with ANSI terminal codes, there are pages that explain
>>> all codes
>>>
>>> *Joop Kiefte* - Chat @ Spike
>>> <https://spikenow.com/r/a/?ref=spike-organic-signature&_ts=owh4j> [image:
>>> owh4j]
>>>
>>> On September 19, 2020 at 18:44 GMT, Alex Mills <al...@channelmeter.com>
>>> wrote:
>>>
>>>
>>> Using Node.js with several projects I can use these:
>>>
>>> const rl = require('readline');
>>> process.stdout.write('current line')
>>> rl.clearLine(process.stdout);
>>> rl.cursorTo(process.stdout, 0);
>>>
>>> this will clear the current line in the terminal, so I can achieve
>>> something like a status line, but I cannot figure out how to do this with
>>> Golang, anyone know?
>>>
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>>>
>>>
>>
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