#include "my_strings.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
//' -> ' est un racc pour *rslt.data
struct string *my_str_init(const char* s, size_t size){

    struct string *rslt = malloc(sizeof(struct string));
    if(rslt == NULL) return NULL;

    if(size == 0 || s == NULL) {
        rslt->data = NULL;
        rslt->size = 0;
    }
    else{
        rslt->data = malloc(size);
        if(rslt->data == NULL){
            free(rslt);
            return NULL;
        }

        memcpy(rslt->data, s, size);
        rslt->size = size;
    }
    return rslt;
}

void my_str_destroy(struct string *str){
    
    if(str == NULL) return;
    
    free(str->data);
    free(str);
}

void my_str_puts(struct string *str){

    if(str == NULL) return;
 

    if(str->data == NULL || str->size == 0)printf("\n");
   
    for (size_t i = 0; i < str->size; i++) putchar(*((str->data) + i));
}

struct string *my_str_n_cat(struct string *str1, const char *str2, size_t str2_len){

    if (str2 == NULL || str2_len == 0) return str1;

    if (str1 == NULL){
        struct string *rslt = my_str_init(str2, str2_len);
        return rslt;
    }

    str1->data = realloc(str1->data, (str1->size + str2_len) * sizeof(char));
    if(str1 == NULL) return str1;
    
    //printf("test");
    int index = 0;
    while (*(str2 + index)){
        str1->data[str1->size + index] = str2[index];
        index ++;
    }
    str1->size = str1->size + index;
    return str1;
}