usr/src/lib/pam_modules/authtok_check/stringlib.c

   1 /*
   2  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 #pragma ident   "%Z%%M% %I%     %E% SMI"
   7
   8 /*
   9  * This program is copyright Alec Muffett 1993. The author disclaims all
  10  * responsibility or liability with respect to it's usage or its effect
  11  * upon hardware or computer systems, and maintains copyright as set out
  12  * in the "LICENCE" document which accompanies distributions of Crack v4.0
  13  * and upwards.
  14  */
  15
  16 #include "packer.h"
  17
  18
  19 char
  20 Chop(register char *string)
  21 {
  22         register char c;
  23         register char *ptr;
  24
  25         c = '\0';
  26
  27         for (ptr = string; *ptr; ptr++);
  28         if (ptr != string) {
  29                 c = *(--ptr);
  30                 *ptr = '\0';
  31         }
  32         return (c);
  33 }
  34
  35 char
  36 Chomp(register char *string)
  37 {
  38         register char c;
  39         register char *ptr;
  40
  41         c = '\0';
  42
  43         for (ptr = string; *ptr; ptr++)
  44                 ;
  45         if (ptr != string && isspace(*(--ptr))) {
  46                 c = *ptr;
  47                 *ptr = '\0';
  48         }
  49         return (c);
  50 }
  51
  52
  53 char *
  54 Trim(register char *string)
  55 {
  56         register char *ptr;
  57
  58         for (ptr = string; *ptr; ptr++);
  59
  60         while ((--ptr >= string) && isspace(*ptr));
  61
  62         *(++ptr) = '\0';
  63
  64         return (ptr);
  65 }