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a64l.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*           Copyright (c) 1985-2007 AT&T Knowledge Ventures            *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                      by AT&T Knowledge Ventures                      *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
#include "FEATURE/uwin"

#if !_UWIN || _lib_a64l

void _STUB_a64l(){}

#else

#define a64l      ______a64l
#define l64a      ______l64a

#include    <stdlib.h>
#include    <string.h>

#undef      a64l
#undef      l64a

#if defined(__EXPORT__)
#define extern          __EXPORT__
#endif

static char letter[65] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

extern long a64l(const char *str)
{
      register unsigned long ul = 0;
      register int n = 6;
      register int c;
      register char *cp;
      for(n=0; n <6; n++)
      {
            if((c= *str++)==0)
                  break;
            if(!(cp=strchr(letter,c)))
                  break;
            ul |= (cp-letter)<< (6*n);
      }
      return((long)ul);
}

extern char *l64a(long l)
{
      static char buff[7];
      unsigned ul = ((unsigned long)l & 0xffffffff);
      register char *cp = buff;
      while(ul>0)
      {
            *cp++ = letter[ul&077];
            ul >>= 6;
      }
      *cp = 0;
      return(buff);
}

#endif

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