LXR uboot/cmd/echo.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright 2000-2009
   4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5 */
   6
   7#include <common.h>
   8#include <command.h>
   9
  10static int do_echo(struct cmd_tbl *cmdtp, int flag, int argc,
  11                   char *const argv[])
  12{
  13        int i = 1;
  14        bool space = false;
  15        bool newline = true;
  16
  17        if (argc > 1) {
  18                if (!strcmp(argv[1], "-n")) {
  19                        newline = false;
  20                        ++i;
  21                }
  22        }
  23
  24        for (; i < argc; ++i) {
  25                if (space) {
  26                        putc(' ');
  27                }
  28                puts(argv[i]);
  29                space = true;
  30        }
  31
  32        if (newline)
  33                putc('\n');
  34
  35        return 0;
  36}
  37
  38U_BOOT_CMD(
  39        echo, CONFIG_SYS_MAXARGS, 1, do_echo,
  40        "echo args to console",
  41        "[-n] [args..]\n"
  42        "    - echo args to console; -n suppresses newline"
  43);
  44