recho.c

来自「busybox最新版的源码:学习和应用的好东东,多的不说了,大家看后再说吧」· C语言 代码 · 共 64 行

/*
   recho -- really echo args, bracketed with <> and with invisible chars
	    made visible.

   Chet Ramey
   [e-mail]
*/

/* Copyright (C) 2002-2005 Free Software Foundation, Inc.

   This file is part of GNU Bash, the Bourne Again SHell.

   Bash 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, or (at your option) any later
   version.

   Bash 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 Bash; see the file COPYING.  If not, write to the Free Software
   Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */

#include <stdio.h>
#include <stdlib.h>

void strprint();

int
main(argc, argv)
int	argc;
char	**argv;
{
	register int	i;

	for (i = 1; i < argc; i++) {
		printf("argv[%d] = <", i);
		strprint(argv[i]);
		printf(">\n");
	}
	exit(0);
}

void
strprint(str)
char	*str;
{
	register unsigned char *s;

	for (s = (unsigned char *)str; s && *s; s++) {
		if (*s < ' ') {
			putchar('^');
			putchar(*s+64);
		} else if (*s == 127) {
			putchar('^');
			putchar('?');
		} else
			putchar(*s);
	}
}