[BusyBox] Re: busybox-cvs Digest, Vol 7, Issue 19

[Erik Andersen]

On Wed Oct 22, 2003 at 04:54:52PM +0400, Vladimir N. Oleynik wrote:
> Unfortunately, it is correct only for the vt console.
> For other terminals it can give wrong effect.
> I think, for busybox best is:
> 
> #ifdef FEATURE_RESET_SUPPORT_INTERNACIONAL_MAPPING
> /* From <linux/kd.h> */
> static const int KDGKBTYPE = 0x4B33;  /* get keyboard type */
> static const int KB_84 = 0x01;
> static const int KB_101 = 0x02;    /* this is what we always answer */
> 
> {
>  	char arg;
> 	int fd;
> 
> 	for(fd = 0; fd < 3; fd++) {
> 		arg = 0;
> 		if(ioctl(fd, KDGKBTYPE, &arg) == 0)
> 			break;
> 	}
> 	if(fd < 3)
> 		printf("033(K");
> }
> #endif
> 
> 
> Also, I don`t know, all or not terminals clearing after "\033c". My 
> consoles and xterms clearing all.

Can you test if this version works properly for you?


#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "busybox.h"

extern int reset_main(int argc, char **argv)
{
    if (isatty(0) || isatty(0) || isatty(0)) {
	/* See 'man 4 console_codes' for details:
	 * "ESC c"			-- Reset
	 * "ESC ( K"		-- Select user mapping
	 * "ESC [ J"		-- Erase display
	 * "ESC [ 0 m"		-- Reset Graphics Rendition attributes
	 * "ESC [ ? 25 h"	-- Make cursor visible.
	 */
	printf("\033c\033(K\033[J\033[0m\033[?25h");
    }
    return EXIT_SUCCESS;
}

 -Erik

--
Erik B. Andersen             http://codepoet-consulting.com/
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