/*
* NAME
* strlisttonums
*
* DESCRIPTION
* Converts string of characters representing list of numbers into array of
* numbers. Allowed formats are:
* 0,1,2,3
* 0-10,20-18
* 1,3,5-8,10,0x10-12
*
* Numbers can be in decimal or hexadecimal format.
*
* PARAMETERS
* `s' String representing list of unsigned numbers.
* `nums' Array to put converted numeric values into.
* `max' Maximum number of elements that nums can accommodate.
*
* RETURN VALUE
* Number of elements placed into nums.
*/
static size_t strlisttonums(char *s, uint64_t *nums, size_t max) {
int ret;
size_t index = 0;
char *saveptr = NULL;
if (s == NULL || nums == NULL || max == 0)
return index;
for (;;) {
char *p = NULL;
char *token = NULL;
token = strtok_r(s, ",", &saveptr);
if (token == NULL)
break;
s = NULL;
while (isspace(*token))
token++;
if (*token == '\0')
continue;
p = strchr(token, '-');
if (p != NULL) {
uint64_t n, start, end;
*p = '\0';
ret = strtouint64(token, &start);
if (ret < 0)
return (0);
ret = strtouint64(p + 1, &end);
if (ret < 0)
return (0);
if (start > end) {
return (0);
}
for (n = start; n <= end; n++) {
if (!(isdup(nums, index, n))) {
nums[index] = n;
index++;
}
if (index >= max)
return index;
}
} else {
uint64_t val;
ret = strtouint64(token, &val);
if (ret < 0)
return (0);
if (!(isdup(nums, index, val))) {
nums[index] = val;
index++;
}
if (index >= max)
return index;
}
}
return index;
}
unsigned
strlisttotab(char *s, uint64_t *tab, const unsigned max)
{
unsigned index = 0;
char *saveptr = NULL;
if (s == NULL || tab == NULL || max == 0)
return index;
for (;;) {
char *p = NULL;
char *token = NULL;
token = strtok_r(s, ",", &saveptr);
if (token == NULL)
break;
s = NULL;
/* get rid of leading spaces & skip empty tokens */
while (isspace(*token))
token++;
if (*token == '\0')
continue;
p = strchr(token, '-');
if (p != NULL) {
/**
* range of numbers provided
* example: 1-5 or 12-9
*/
uint64_t n, start, end;
*p = '\0';
start = strtouint64(token);
end = strtouint64(p+1);
if (start > end) {
/**
* no big deal just swap start with end
*/
n = start;
start = end;
end = n;
}
for (n = start; n <= end; n++) {
if (!(isdup(tab, index, n))) {
tab[index] = n;
index++;
}
if (index >= max)
return index;
}
} else {
/**
* single number provided here
* remove duplicates if necessary
*/
uint64_t val = strtouint64(token);
if (!(isdup(tab, index, val))) {
tab[index] = val;
index++;
}
if (index >= max)
return index;
}
}
return index;
}
