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Str.c
66 lines (51 loc) · 1.34 KB
/
Str.c
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#include <stdint.h>
#include <stdlib.h>
#include "Str.h"
static void increase_max_len(struct k_Str* str, struct k_Err* err) {
if (str->max_len == SIZE_MAX) {
K_ERR_SET_ERRNO(err, ENOMEM);
return;
}
size_t new_max_len = (size_t) (str->max_len * 1.5);
if (new_max_len < str->max_len) {
new_max_len = SIZE_MAX;
}
char* new_val = realloc(str->val, new_max_len * sizeof(*str->val));
if (new_val == NULL) {
K_ERR_SET_ERRNO(err, errno);
return;
}
str->val = new_val;
str->max_len = new_max_len;
}
static void Str_free(void* str) {
free(((struct k_Str*) str)->val);
free(str);
}
void k_Str_add_char(struct k_Str* str, char ch, struct k_Err* err) {
if (str->len == str->max_len) {
increase_max_len(str, err);
if (k_Err_has(err)) {
return;
}
}
str->val[str->len++] = ch;
}
struct k_Str* k_Str_new(struct k_Err* err) {
size_t max_len = 32;
char* val = malloc(max_len * sizeof(*val));
if (val == NULL) {
K_ERR_SET_ERRNO(err, errno);
return NULL;
}
struct k_Str* str = malloc(sizeof(*str));
if (str == NULL) {
K_ERR_SET_ERRNO(err, errno);
free(val);
return NULL;
}
str->val = val;
str->len = 0;
str->max_len = max_len;
return K_REF_INIT(str, Str_free);
}