-/* 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.
- */
-
-/* BB_AUDIT SUSv3 compliant -- unless configured as fancy echo. */
-/* http://www.opengroup.org/onlinepubs/007904975/utilities/echo.html */
-
-/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
- *
- * Because of behavioral differences, implemented configurable SUSv3
- * or 'fancy' gnu-ish behaviors. Also, reduced size and fixed bugs.
- * 1) In handling '\c' escape, the previous version only suppressed the
- * trailing newline. SUSv3 specifies _no_ output after '\c'.
- * 2) SUSv3 specifies that octal escapes are of the form \0{#{#{#}}}.
- * The previous version version did not allow 4-digit octals.
*/
#include <stdio.h>
#include <stdlib.h>
#include "busybox.h"
-extern int echo_main(int argc, char** argv)
+int echo_main(int argc, char** argv)
{
-#ifndef CONFIG_FEATURE_FANCY_ECHO
-#define eflag '\\'
- ++argv;
-#else
- const char *p;
- int nflag = 1;
- int eflag = 0;
-
- while (*++argv && (**argv == '-')) {
- /* 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.
- */
-
- if (!*(p = *argv + 1)) { /* A single '-', so echo it. */
- goto just_echo;
- }
-
- do {
- if (strrchr("neE", *p) == 0) {
- goto just_echo;
- }
- } while (*++p);
-
- /* All of the options in this arg are valid, so handle them. */
- p = *argv + 1;
- do {
- if (*p == 'n') {
- nflag = 0;
- } else if (*p == 'e') {
- eflag = '\\';
- } else {
- eflag = 0;
- }
- } while (*++p);
- }
-
-just_echo:
-#endif
- while (*argv) {
- register int c;
-
- while ((c = *(*argv)++)) {
- if (c == eflag) { /* Check for escape seq. */
- if (**argv == 'c') {
- /* '\c' means cancel newline and
- * ignore all subsequent chars. */
- goto DONE;
- }
-#ifndef CONFIG_FEATURE_FANCY_ECHO
- /* SUSv3 specifies that octal escapes must begin with '0'. */
- if (((unsigned int)(**argv - '1')) >= 7)
-#endif
- {
- /* Since SUSv3 mandates a first digit of 0, 4-digit octals
- * of the form \0### are accepted. */
- if ((**argv == '0') && (((unsigned int)(argv[0][1] - '0')) < 8)) {
- (*argv)++;
- }
- /* bb_process_escape_sequence can handle nul correctly */
- c = bb_process_escape_sequence((const char **) argv);
- }
- }
- putchar(c);
- }
-
- if (*++argv) {
- putchar(' ');
- }
- }
-
-#ifdef CONFIG_FEATURE_FANCY_ECHO
- if (nflag) {
- putchar('\n');
- }
-#else
- putchar('\n');
-#endif
-
-DONE:
+ (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
- */
projects / oweals / busybox.git / blobdiff