-/* vi: set sw=4 ts=4: */
/*
- * echo implementation for busybox
- *
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
+ * echo applet implementation for busybox
*
* 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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
- * Original copyright notice is retained at the end of this file.
*/
-#include "busybox.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
+#include "busybox.h"
-extern int
-echo_main(int argc, char** argv)
+int echo_main(int argc, char** argv)
{
- int nflag = 0;
- int eflag = 0;
-
- /* Skip argv[0]. */
- argc--;
- argv++;
-
- while (argc > 0 && *argv[0] == '-')
- {
- register char *temp;
- register int index;
-
- /*
- * If it appears that we are handling options, then make sure
- * that all of the options specified are actually valid.
- * Otherwise, the string should just be echoed.
- */
- temp = argv[0] + 1;
-
- for (index = 0; temp[index]; index++)
- {
- if (strrchr("neE", temp[index]) == 0)
- goto just_echo;
- }
-
- if (!*temp)
- goto just_echo;
-
- /*
- * All of the options in temp are valid options to echo.
- * Handle them.
- */
- while (*temp)
- {
- if (*temp == 'n')
- nflag = 1;
- else if (*temp == 'e')
- eflag = 1;
- else if (*temp == 'E')
- eflag = 0;
- else
- goto just_echo;
-
- temp++;
- }
- argc--;
- argv++;
- }
-
-just_echo:
- while (argc > 0) {
- char *arg = argv[0];
- register int c;
-
- while ((c = *arg++)) {
-
- /* Check for escape sequence. */
- if (c == '\\' && eflag && *arg) {
- if (*arg == 'c') {
- /* '\c' means cancel newline. */
- nflag = 1;
- arg++;
- continue;
- } else {
- c = process_escape_sequence(&arg);
- }
- }
-
- putchar(c);
- }
- argc--;
- argv++;
- if (argc > 0)
- putchar(' ');
- }
- if (!nflag)
- putchar('\n');
- fflush(stdout);
-
- return EXIT_SUCCESS;
+ (void)bb_echo(argc, argv);
+ bb_fflush_stdout_and_exit(EXIT_SUCCESS);
}
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
- * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
- *
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)echo.c 8.1 (Berkeley) 5/31/93
- */