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/*
* Author: Fernando RUIZ CASAS
* Work: fernando.ruiz@ctv.es
* Home: correo@fernando-ruiz.com
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/shell.h>
#include "internal.h"
/*
* str to int "0xaffe" "0b010010" "0123" "192939"
*/
int rtems_shell_str2int(char * s) {
int sign=1;
int base=10;
int value=0;
int digit;
if (!s) return 0;
if (*s) {
if (*s=='-') {
sign=-1;
s++;
if (!*s) return 0;
}
if (*s=='0') {
s++;
switch(*s) {
case 'x':
case 'X':
s++;
base=16;
break;
case 'b':
case 'B':
s++;
base=2;
break;
default:
base=8;
break;
}
}
while (*s) {
switch(*s) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
digit=*s-'0';
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
digit=*s-'A'+10;
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
digit=*s-'a'+10;
break;
default:
return value*sign;
}
if (digit>base)
return value*sign;
value=value*base+digit;
s++;
}
}
return value*sign;
}
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