mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-04 14:00:19 +00:00
bb64d1c92f
Change echo to puts characters together where it knows about them together. This improves netconsole performance by greatly reducing the number of packets that are sent. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/*
|
|
* Copyright 2000-2009
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
|
|
int do_echo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
int i;
|
|
int putnl = 1;
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
char *p = argv[i];
|
|
char *nls; /* new-line suppression */
|
|
|
|
if (i > 1)
|
|
putc(' ');
|
|
|
|
nls = strstr(p, "\\c");
|
|
if (nls) {
|
|
char *prenls = p;
|
|
|
|
putnl = 0;
|
|
/*
|
|
* be paranoid and guess that someone might
|
|
* say \c more than once
|
|
*/
|
|
while (nls) {
|
|
*nls = '\0';
|
|
puts(prenls);
|
|
*nls = '\\';
|
|
prenls = nls + 2;
|
|
nls = strstr(prenls, "\\c");
|
|
}
|
|
puts(prenls);
|
|
} else {
|
|
puts(p);
|
|
}
|
|
}
|
|
|
|
if (putnl)
|
|
putc('\n');
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
echo, CONFIG_SYS_MAXARGS, 1, do_echo,
|
|
"echo args to console",
|
|
"[args..]\n"
|
|
" - echo args to console; \\c suppresses newline"
|
|
);
|