lib/libc/str_fmt.c

   1 /* $Id: str_fmt.c,v 1.1.1.1 2006/09/14 01:59:06 root Exp $ */
   2
   3 /*
   4  * Copyright (c) 2000-2002 Opsycon AB  (www.opsycon.se)
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Opsycon AB.
  17  * 4. The name of the author may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  21  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  24  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  */
  33 #include <string.h>
  34
  35 /*
  36  *  Format string by inserting blanks.
  37  */
  38
  39 void
  40 str_fmt(char *p, int size, int fmt)
  41 {
  42         int n, m, len;
  43
  44         len = strlen (p);
  45         switch (fmt) {
  46         case FMT_RJUST:
  47                 for (n = size - len; n > 0; n--)
  48                         strichr (p, ' ');
  49                 break;
  50         case FMT_LJUST:
  51                 for (m = size - len; m > 0; m--)
  52                         strcat (p, " ");
  53                 break;
  54         case FMT_RJUST0:
  55                 for (n = size - len; n > 0; n--)
  56                         strichr (p, '0');
  57                 break;
  58         case FMT_CENTER:
  59                 m = (size - len) / 2;
  60                 n = size - (len + m);
  61                 for (; m > 0; m--)
  62                         strcat (p, " ");
  63                 for (; n > 0; n--)
  64                         strichr (p, ' ');
  65                 break;
  66         }
  67 }