Minishell2/setenv2.c at main · divisio74/Minishell2 · GitHub

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/*
** EPITECH PROJECT, 2025
** B-PSU-200-LYN-2-1-minishell1-pierre.baud
** File description:
** setenv2
*/

#include "my.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>

void print_error_and_exit(void)
{
    write(2, "Erreur d'allocation mémoire\n", 29);
    exit(84);
}

char **allocate_new_env(int env_size)
{
    char **new_env = malloc((env_size + 2) * sizeof(char *));

    if (new_env == NULL)
        print_error_and_exit();
    return new_env;
}

void add_new_var(char *name, char *value, char ***envc)
{
    int env_size = 0;
    char **new_env;
    int i = 0;

    if (value == NULL)
        value = "";
    while ((*envc)[env_size] != NULL)
        env_size++;
    new_env = allocate_new_env(env_size);
    for (; i < env_size; i++)
        new_env[i] = (*envc)[i];
    new_env[env_size] = create_new_entry(name, value);
    new_env[env_size + 1] = NULL;
    free(*envc);
    *envc = new_env;
}

char *create_new_entry(char *name, char *value)
{
    int total_len = 0;
    char *new_entry;

    if (value == NULL)
        value = "";
    total_len = my_strlen(name) + my_strlen(value) + 2;
    new_entry = malloc(total_len * sizeof(char));
    if (new_entry == NULL)
        print_error_and_exit();
    my_strcpy(new_entry, name);
    my_strcat(new_entry, "=");
    my_strcat(new_entry, value);
    return new_entry;
}