env_conversion.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   env_conversion.c                                   :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: baelgadi <baelgadi@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/12/14 01:43:28 by baelgadi          #+#    #+#             */
/*   Updated: 2026/03/04 04:42:28 by baelgadi         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "env.h"
#include "libft.h"
 
static char *create_env_string(t_env *node)
{
    char    *part;
    char    *result;
 
    if (!node || !node->key)
        return (NULL);
    part = ft_strjoin(node->key, "=");
    if (!part)
        return (NULL);
    if (node->value)
        result = ft_strjoin(part, node->value);
    else
        result = ft_strdup(part);
    free(part);
    return (result);
}
 
static void free_incomplete_array(char **arr, int count)
{
    int i;
 
    i = 0;
    while (i < count)
    {
        free(arr[i]);
        i++;
    }
    free(arr);
}
 
static int  fill_env_array(char **arr, t_env *env, int size)
{
    t_env   *current;
    int     i;
 
    current = env;
    i = 0;
    while (current && i < size)
    {
        arr[i] = create_env_string(current);
        if (!arr[i])
        {
            free_incomplete_array(arr, i);
            return (0);
        }
        current = current->next;
        i++;
    }
    arr[i] = NULL;
    return (1);
}
 
char    **env_to_array(t_env *env)
{
    char    **arr;
    int     size;
 
    if (!env)
    {
        arr = ft_calloc(1, sizeof(char *));
        if (!arr)
            return (NULL);
        return (arr);
    }
    size = env_list_size(env);
    arr = ft_calloc(size + 1, sizeof(char *));
    if (!arr)
        return (NULL);
    if (!fill_env_array(arr, env, size))
        return (NULL);
    return (arr);
}