diff options
Diffstat (limited to 'echo.c')
| -rw-r--r-- | echo.c | 152 |
1 files changed, 0 insertions, 152 deletions
@@ -1,152 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * echo implementation for busybox - * - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * 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 - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * 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 <stdio.h> -#include <string.h> -#include <stdlib.h> -#include "busybox.h" - -extern 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 ix; - - /* - * 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 (ix = 0; temp[ix]; ix++) - { - if (strrchr("neE", temp[ix]) == 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) { - const 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; -} - -/*- - * 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 - */ |