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; |
} |