| 0,0 → 1,127 |
|---|
| /* $NetBSD: echo.c,v 1.8 1996/11/02 18:26:06 christos Exp $ */ |
| |
| /*- |
| * 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. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * 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 |
| */ |
| |
| /* |
| * Echo command. |
| */ |
| |
| #define main echocmd |
| |
| #ifdef _GNU_SOURCE |
| #include <stdio.h> |
| |
| #include "../mystring.h" |
| #else |
| #include "bltin.h" |
| #endif |
| |
| /* #define eflag 1 */ |
| |
| int |
| main(argc, argv) char **argv; { |
| register char **ap; |
| register char *p; |
| register char c; |
| int nflag = 0; |
| #ifndef eflag |
| int eflag = 0; |
| #endif |
| |
| ap = argv; |
| if (argc) |
| ap++; |
| while ((p = *ap) != NULL && *p == '-') { |
| if (equal(p, "-n")) { |
| nflag = 1; |
| } else if (equal(p, "-e")) { |
| #ifndef eflag |
| eflag = 1; |
| #endif |
| } else if (equal(p, "-E")) { |
| #ifndef eflag |
| eflag = 0; |
| #endif |
| } |
| else break; |
| ap++; |
| } |
| while ((p = *ap++) != NULL) { |
| while ((c = *p++) != '\0') { |
| if (c == '\\' && eflag) { |
| switch (c = *p++) { |
| case 'a': c = '\007'; break; |
| case 'b': c = '\b'; break; |
| case 'c': return 0; /* exit */ |
| case 'e': c = '\033'; break; |
| case 'f': c = '\f'; break; |
| case 'n': c = '\n'; break; |
| case 'r': c = '\r'; break; |
| case 't': c = '\t'; break; |
| case 'v': c = '\v'; break; |
| case '\\': break; /* c = '\\' */ |
| case '0': case '1': case '2': case '3': |
| case '4': case '5': case '6': case '7': |
| c -= '0'; |
| if (*p >= '0' && *p <= '7') |
| c = c * 8 + (*p++ - '0'); |
| if (*p >= '0' && *p <= '7') |
| c = c * 8 + (*p++ - '0'); |
| break; |
| default: |
| p--; |
| break; |
| } |
| } |
| putchar(c); |
| } |
| if (*ap) |
| putchar(' '); |
| } |
| if (! nflag) |
| putchar('\n'); |
| #ifdef _GNU_SOURCE |
| fflush(stdout); |
| if (ferror(stdout)) { |
| clearerr(stdout); |
| return 1; |
| } |
| #endif |
| return 0; |
| } |