export_utils.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   export_utils.c                                     :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: baelgadi <baelgadi@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/12/12 01:41:07 by baelgadi          #+#    #+#             */
/*   Updated: 2026/03/04 04:41:36 by baelgadi         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "builtins.h"
#include "libft.h"
 
static int  count_env(t_env *env)
{
    int count;
 
    count = 0;
    while (env)
    {
        count++;
        env = env->next;
    }
    return (count);
}
 
static t_env    **env_to_node_array(t_env *env, int count)
{
    t_env   **arr;
    int     i;
 
    arr = malloc((count + 1) * sizeof(t_env *));
    if (!arr)
        return (NULL);
    i = 0;
    while (env)
    {
        arr[i] = env;
        env = env->next;
        i++;
    }
    arr[i] = NULL;
    return (arr);
}
 
static void sort_env_array(t_env **arr, int count)
{
    int     i;
    int     j;
    t_env   *swap;
 
    i = 0;
    while (i < count - 1)
    {
        j = 0;
        while (j < count - 1 - i)
        {
            if (ft_strncmp(arr[j]->key, arr[j + 1]->key, -1) > 0)
            {
                swap = arr[j];
                arr[j] = arr[j + 1];
                arr[j + 1] = swap;
            }
            j++;
        }
        i++;
    }
}
 
static void print_one_export(t_env *var)
{
    ft_putstr_fd("declare -x ", STDOUT_FILENO);
    ft_putstr_fd(var->key, STDOUT_FILENO);
    if (var->value != NULL)
    {
        ft_putstr_fd("=\"", STDOUT_FILENO);
        ft_putstr_fd(var->value, STDOUT_FILENO);
        ft_putchar_fd('"', STDOUT_FILENO);
    }
    ft_putchar_fd('\n', STDOUT_FILENO);
}
 
void    print_sorted_export(t_env *env)
{
    t_env   **arr;
    int     count;
    int     i;
 
    count = count_env(env);
    if (count == 0)
        return ;
    arr = env_to_node_array(env, count);
    if (!arr)
        return ;
    sort_env_array(arr, count);
    i = 0;
    while (arr[i])
    {
        print_one_export(arr[i]);
        i++;
    }
    free(arr);
}