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#include "tunala.h"
int int_strtoul(const char *str, unsigned long *val)
{
#ifdef HAVE_STRTOUL
char *tmp;
unsigned long ret = strtoul(str, &tmp, 10);
if ((str == tmp) || (*tmp != '\0'))
/* The value didn't parse cleanly */
return 0;
if (ret == ULONG_MAX)
/* We hit a limit */
return 0;
*val = ret;
return 1;
#else
char buf[2];
unsigned long ret = 0;
buf[1] = '\0';
if (str == '\0')
/* An empty string ... */
return 0;
while (*str != '\0') {
/*
* We have to multiply 'ret' by 10 before absorbing the next digit.
* If this will overflow, catch it now.
*/
if (ret && (((ULONG_MAX + 10) / ret) < 10))
return 0;
ret *= 10;
if (!isdigit(*str))
return 0;
buf[0] = *str;
ret += atoi(buf);
str++;
}
*val = ret;
return 1;
#endif
}
#ifndef HAVE_STRSTR
char *int_strstr(const char *haystack, const char *needle)
{
const char *sub_haystack = haystack, *sub_needle = needle;
unsigned int offset = 0;
if (!needle)
return haystack;
if (!haystack)
return NULL;
while ((*sub_haystack != '\0') && (*sub_needle != '\0')) {
if (sub_haystack[offset] == sub_needle) {
/* sub_haystack is still a candidate */
offset++;
sub_needle++;
} else {
/* sub_haystack is no longer a possibility */
sub_haystack++;
offset = 0;
sub_needle = needle;
}
}
if (*sub_haystack == '\0')
/* Found nothing */
return NULL;
return sub_haystack;
}
#endif
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