svn_rev_643

structure cleanup

1 files changed, 82 insertions, 0 deletions

diff --git a/commands/echo.c b/commands/echo.c
new file mode 100644
index 0000000000..1314f2d971
--- /dev/null
+++ b/commands/echo.c
@@ -0,0 +1,82 @@
+#include <common.h>
+#include <command.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <errno.h>
+
+static int do_echo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	int i, optind = 1;
+        int fd = stdout, opt, newline = 1;
+        char *file = NULL;
+	int oflags = O_WRONLY | O_CREAT;
+
+	/* We can't use getopt() here because we want to
+	 * echo all things we don't understand.
+	 */
+	while (optind < argc && *argv[optind] == '-') {
+		if (!*(argv[optind] + 1) || *(argv[optind] + 2))
+			break;
+
+		opt = *(argv[optind] + 1);
+		switch (opt) {
+		case 'n':
+			newline = 0;
+			break;
+		case 'a':
+			oflags |= O_APPEND;
+			if (optind + 1 < argc)
+				file = argv[optind + 1];
+			else
+				goto no_optarg_out;
+			optind++;
+			break;
+		case 'o':
+			oflags |= O_TRUNC;
+			file = argv[optind + 1];
+			if (optind + 1 < argc)
+				file = argv[optind + 1];
+			else
+				goto no_optarg_out;
+			optind++;
+			break;
+		default:
+			goto exit_parse;
+		}
+		optind++;
+	}
+
+exit_parse:
+	if (file) {
+		fd = open(file, oflags);
+		if (fd < 0) {
+			perror("open");
+			return 1;
+		}
+	}
+
+	for (i = optind; i < argc; i++) {
+		if (i > optind)
+			fputc(fd, ' ');
+		fputs(fd, argv[i]);
+	}
+
+	if (newline)
+		fputc(fd, '\n');
+
+	if (file)
+		close(fd);
+
+	return 0;
+
+no_optarg_out:
+	printf("option requires an argument -- %c\n", opt);
+	return 1;
+}
+
+U_BOOT_CMD_START(echo)
+	.maxargs	= CONFIG_MAXARGS,
+	.cmd		= do_echo,
+	.usage		= "echo args to console",
+U_BOOT_CMD_END
+