59b9e87024
* zcat works again (wasn't working since option parsing was broken) * more doc updates/more support for BB_FEATURE_SIMPLE_HELP -Erik
141 lines
4.5 KiB
C
141 lines
4.5 KiB
C
/* 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 "internal.h"
|
|
#include <stdio.h>
|
|
|
|
static const char uname_usage[] =
|
|
"echo [-neE] [ARG ...]\n"
|
|
#ifndef BB_FEATURE_TRIVIAL_HELP
|
|
"\nPrints the specified ARGs to stdout\n\n"
|
|
"Options:\n"
|
|
"\t-n\tsuppress trailing newline\n"
|
|
"\t-e\tinterpret backslash-escaped characters (i.e. \\t=tab etc)\n"
|
|
"\t-E\tdisable interpretation of backslash-escaped characters\n"
|
|
#endif
|
|
;
|
|
|
|
extern int
|
|
echo_main(int argc, char** argv)
|
|
{
|
|
register char **ap;
|
|
register char *p;
|
|
register char c;
|
|
int nflag = 0;
|
|
int eflag = 0;
|
|
|
|
ap = argv;
|
|
if (argc)
|
|
ap++;
|
|
while ((p = *ap) != NULL && *p == '-') {
|
|
if (strcmp(p, "-n")==0) {
|
|
nflag = 1;
|
|
} else if (strcmp(p, "-e")==0) {
|
|
eflag = 1;
|
|
} else if (strcmp(p, "-E")==0) {
|
|
eflag = 0;
|
|
}
|
|
else if (strncmp(p, "--", 2)==0) {
|
|
usage( uname_usage);
|
|
}
|
|
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': exit( 0); /* exit */
|
|
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');
|
|
fflush(stdout);
|
|
exit( 0);
|
|
}
|
|
|
|
/*-
|
|
* 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
|
|
*/
|
|
|
|
|