127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
/*
|
|
* Copyright 1989 - 1992, Julianne Frances Haugh
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include "rcsid.h"
|
|
RCSID("$Id: rad64.c,v 1.5 2000/08/26 18:27:17 marekm Exp $")
|
|
|
|
/*
|
|
* c64i - convert a radix 64 character to an integer
|
|
*/
|
|
|
|
int
|
|
c64i(int c)
|
|
{
|
|
if (c == '.')
|
|
return (0);
|
|
|
|
if (c == '/')
|
|
return (1);
|
|
|
|
if (c >= '0' && c <= '9')
|
|
return (c - '0' + 2);
|
|
|
|
if (c >= 'A' && c <= 'Z')
|
|
return (c - 'A' + 12);
|
|
|
|
if (c >= 'a' && c <= 'z')
|
|
return (c - 'a' + 38);
|
|
else
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* i64c - convert an integer to a radix 64 character
|
|
*/
|
|
|
|
int
|
|
i64c(int i)
|
|
{
|
|
if (i <= 0)
|
|
return ('.');
|
|
|
|
if (i == 1)
|
|
return ('/');
|
|
|
|
if (i >= 2 && i < 12)
|
|
return ('0' - 2 + i);
|
|
|
|
if (i >= 12 && i < 38)
|
|
return ('A' - 12 + i);
|
|
|
|
if (i >= 38 && i < 63)
|
|
return ('a' - 38 + i);
|
|
|
|
return ('z');
|
|
}
|
|
|
|
#ifndef HAVE_A64L
|
|
|
|
/*
|
|
* l64a - convert a long to a string of radix 64 characters
|
|
*/
|
|
|
|
char *
|
|
l64a(long l)
|
|
{
|
|
static char buf[8];
|
|
int i = 0;
|
|
|
|
if (l < 0L)
|
|
return ((char *) 0);
|
|
|
|
do {
|
|
buf[i++] = i64c ((int) (l % 64));
|
|
buf[i] = '\0';
|
|
} while (l /= 64L, l > 0 && i < 6);
|
|
|
|
return (buf);
|
|
}
|
|
|
|
/*
|
|
* a64l - convert a radix 64 string to a long integer
|
|
*/
|
|
|
|
long
|
|
a64l(const char *s)
|
|
{
|
|
int i;
|
|
long value;
|
|
long shift = 0;
|
|
|
|
for (i = 0, value = 0L;i < 6 && *s;s++) {
|
|
value += (c64i ((int) *s) << shift);
|
|
shift += 6;
|
|
}
|
|
return (value);
|
|
}
|
|
|
|
#endif /* !HAVE_A64L */
|