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#include <stdlib.h>
#include <string.h>
#include "array.h"
#include "utils.h"
size_t
arr_len(array_t arr) {
size_t n = 0;
if (arr) {
while (*arr != NULL) {
arr++;
n++;
}
}
return n;
}
// TODO create if arr == NULL
array_t
arr_append(array_t *arr, char *s, int n, bool dup) {
if (n < 0) {
n = arr_len(*arr);
}
array_t tmp = realloc(*arr, sizeof(char *) * (++n + 1));
if (tmp == NULL) {
free(*arr);
die_perror("realloc");
}
*arr = tmp;
(*arr)[n - 1] = dup ? strdup(s) : s;
(*arr)[n] = NULL;
return *arr;
}
array_t
arr_copy(array_t arr) {
size_t n = arr_len(arr);
array_t s = malloc(sizeof(char *) * (n + 1));
if (s == NULL)
die_perror("malloc");
for (size_t i = 0; i < n; i++)
s[i] = strdup(arr[i]);
s[n] = NULL;
return s;
}
void
arr_free(array_t arr) {
array_t t = arr;
if (t) {
while (*t) {
free(*t);
t++;
}
free(arr);
}
}
array_t
split(char *s, char *sep) {
if (s == NULL)
return NULL;
/* avoid modifying original string */
char *ss = strdup(s);
array_t res = NULL;
char *p = strtok(ss, sep);
int n = 0;
while (p) {
arr_append(&res, p, n++, true);
p = strtok(NULL, sep);
}
free(ss);
return res;
}
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