83 lines
1.4 KiB
C
83 lines
1.4 KiB
C
#include <common.h>
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#include <command.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <errno.h>
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static int do_echo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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int i, optind = 1;
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int fd = stdout, opt, newline = 1;
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char *file = NULL;
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int oflags = O_WRONLY | O_CREAT;
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/* We can't use getopt() here because we want to
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* echo all things we don't understand.
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*/
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while (optind < argc && *argv[optind] == '-') {
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if (!*(argv[optind] + 1) || *(argv[optind] + 2))
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break;
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opt = *(argv[optind] + 1);
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switch (opt) {
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case 'n':
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newline = 0;
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break;
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case 'a':
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oflags |= O_APPEND;
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if (optind + 1 < argc)
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file = argv[optind + 1];
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else
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goto no_optarg_out;
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optind++;
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break;
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case 'o':
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oflags |= O_TRUNC;
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file = argv[optind + 1];
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if (optind + 1 < argc)
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file = argv[optind + 1];
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else
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goto no_optarg_out;
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optind++;
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break;
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default:
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goto exit_parse;
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}
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optind++;
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}
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exit_parse:
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if (file) {
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fd = open(file, oflags);
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if (fd < 0) {
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perror("open");
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return 1;
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}
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}
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for (i = optind; i < argc; i++) {
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if (i > optind)
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fputc(fd, ' ');
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fputs(fd, argv[i]);
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}
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if (newline)
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fputc(fd, '\n');
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if (file)
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close(fd);
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return 0;
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no_optarg_out:
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printf("option requires an argument -- %c\n", opt);
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return 1;
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}
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U_BOOT_CMD_START(echo)
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.maxargs = CONFIG_MAXARGS,
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.cmd = do_echo,
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.usage = "echo args to console",
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U_BOOT_CMD_END
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