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