Seluj78/Minishell

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   env.c                                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jlasne <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2017/02/20 14:30:20 by jlasne            #+#    #+#             */
/*   Updated: 2017/03/09 14:02:42 by jlasne           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "../includes/minishell.h"

int            ft_getenv(char *name, char **env)
{
    int        i;
    char    *search;
    int        name_len;

    name_len = ft_strlen(name) + 2;
    search = (char*)malloc(sizeof(char) * name_len);
    if (search != NULL)
    {
        ft_strcpy(search, name);
        ft_strcat(search, "=");
        i = 0;
        while (env[i] != NULL)
        {
            if (my_strncmp(env[i], search, name_len) == 0)
            {
                free(search);
                return (i);
            }
            i = i + 1;
        }
        free(search);
    }
    return (-1);
}

char        **ft_setenv(char *name, char *value, char **env)
{
    int        i;
    int        total_len;
    char    *record;

    total_len = ft_strlen(name) + ft_strlen(value) + 2;
    record = (char*)malloc(sizeof(char) * total_len);
    if (record != NULL)
    {
        ft_strcpy(record, name);
        ft_strcat(record, "=");
        ft_strcat(record, value);
        if ((i = ft_getenv(name, env)) >= 0)
        {
            free(env[i]);
            env[i] = record;
        }
        else
            return (ft_add_to_array(record, env));
    }
    return (env);
}

char        **ft_unsetenv(char *name, char **env)
{
    int        i;

    if ((i = ft_getenv(name, env)) >= 0)
    {
        env = ft_remfrom_array(i, env);
    }
    return (env);
}

int            command_setenv(char **argv, char ***env)
{
    if (argv[1] != NULL)
    {
        if (argv[2] != NULL)
            *env = ft_setenv(argv[1], argv[2], *env);
        else
            *env = ft_setenv(argv[1], "", *env);
    }
    else
        ft_printf("setenv: Too few arguments.\n");
    return (1);
}

int            command_unsetenv(char **argv, char ***env)
{
    if (argv[1] != NULL)
        *env = ft_unsetenv(argv[1], *env);
    else
        ft_printf("unsetenv: Too few arguments.\n");
    return (1);
}