71 lines
934 B
C
71 lines
934 B
C
#include <stddef.h>
|
|
|
|
#include "parse.h"
|
|
|
|
int parse_base10_digit(char c)
|
|
{
|
|
switch (c) {
|
|
case '0': return 0;
|
|
case '1': return 1;
|
|
case '2': return 2;
|
|
case '3': return 3;
|
|
case '4': return 4;
|
|
case '5': return 5;
|
|
case '6': return 6;
|
|
case '7': return 7;
|
|
case '8': return 8;
|
|
case '9': return 9;
|
|
default: return -1;
|
|
}
|
|
}
|
|
|
|
const char * parse_base10(const char * s, int * n)
|
|
{
|
|
*n = 0;
|
|
int sign = 1;
|
|
|
|
if (*s == '-') {
|
|
sign = -1;
|
|
s++;
|
|
}
|
|
|
|
while (true) {
|
|
int digit = parse_base10_digit(*s);
|
|
if (digit == -1)
|
|
break;
|
|
|
|
*n *= 10;
|
|
*n += digit;
|
|
s++;
|
|
}
|
|
|
|
*n *= sign;
|
|
|
|
return s;
|
|
}
|
|
|
|
const char * parse_base10_64(const char * s, int64_t * n)
|
|
{
|
|
*n = 0;
|
|
int sign = 1;
|
|
|
|
if (*s == '-') {
|
|
sign = -1;
|
|
s++;
|
|
}
|
|
|
|
while (true) {
|
|
int digit = parse_base10_digit(*s);
|
|
if (digit == -1)
|
|
break;
|
|
|
|
*n *= 10;
|
|
*n += digit;
|
|
s++;
|
|
}
|
|
|
|
*n *= sign;
|
|
|
|
return s;
|
|
}
|