csu3_am335x/EVSE/GPL/plc-utils.LNX.2.1.20/source/tools/uintspec.c

/*====================================================================*
 *
 *   uint64_t uintspec (char const * string, uint64_t minimum, uint64_t maximum);
 *
 *   number.h
 *
 *   convert a numeric string to an unsigned integer; confirm that
 *   the result does not exceed the specified range; report errors 
 *   and terminate the program on error;
 *
 *   Motley Tools by Charles Maier <cmaier@cmassoc.net>;
 *   Copyright (c) 2001-2006 by Charles Maier Associates;
 *   Licensed under the Internet Software Consortium License;
 *
 *--------------------------------------------------------------------*/

#ifndef UINTSPEC_SOURCE
#define UINTSPEC_SOURCE

#include <stdlib.h>
#include <inttypes.h>
#include <ctype.h>
#include <errno.h>

#include "../tools/number.h"
#include "../tools/error.h"
#include "../tools/types.h"

uint64_t uintspec (char const * string, uint64_t minimum, uint64_t maximum) 

{ 
	char const * number = string; 
	unsigned radix = RADIX_DEC; 
	uint64_t value = 0; 
	unsigned digit; 
	if (* number == '0') 
	{ 
		number++; 
		if ((* number == 'b') || (* number == 'B')) 
		{ 
			radix = RADIX_BIN; 
			number++; 
		} 
		else if ((* number == 'x') || (* number == 'X')) 
		{ 
			radix = RADIX_HEX; 
			number++; 
		} 
	} 
	while ((digit = todigit (* number)) < radix) 
	{ 
		value *= radix; 
		value += digit; 
		number++; 
	} 
	if (* number) 
	{ 
		error (1, EINVAL, "Have '%s' but need base %d integer %" PRId64 " thru %" PRId64, string, radix, minimum, maximum); 
	} 
	if ((value < minimum) || (value > maximum)) 
	{ 
		error (1, EINVAL, "Have '%s' but need %" PRId64 " thru %" PRId64, string, minimum, maximum); 
	} 
	return (value); 
} 

#endif