busybox/shell/ash_test/recho.c
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   1/*
   2   recho -- really echo args, bracketed with <> and with invisible chars
   3            made visible.
   4
   5   Chet Ramey
   6   chet@po.cwru.edu
   7*/
   8
   9/* Copyright (C) 2002-2005 Free Software Foundation, Inc.
  10
  11   This file is part of GNU Bash, the Bourne Again SHell.
  12
  13   Bash is free software; you can redistribute it and/or modify it under
  14   the terms of the GNU General Public License as published by the Free
  15   Software Foundation; either version 2, or (at your option) any later
  16   version.
  17
  18   Bash is distributed in the hope that it will be useful, but WITHOUT ANY
  19   WARRANTY; without even the implied warranty of MERCHANTABILITY or
  20   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  21   for more details.
  22
  23   You should have received a copy of the GNU General Public License along
  24   with Bash; see the file COPYING.  If not, write to the Free Software
  25   Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
  26
  27#include <stdio.h>
  28#include <stdlib.h>
  29
  30void strprint();
  31
  32int main(int argc, char **argv)
  33{
  34        int i;
  35
  36        for (i = 1; i < argc; i++) {
  37                printf("argv[%d] = <", i);
  38                strprint(argv[i]);
  39                printf(">\n");
  40        }
  41        exit(EXIT_SUCCESS);
  42}
  43
  44void strprint(char *str)
  45{
  46        unsigned char *s;
  47
  48        for (s = (unsigned char *)str; s && *s; s++) {
  49                if (*s < ' ') {
  50                        putchar('^');
  51                        putchar(*s+64);
  52                } else if (*s == 127) {
  53                        putchar('^');
  54                        putchar('?');
  55                } else
  56                        putchar(*s);
  57        }
  58}
  59