/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   utils_2.c                                           :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/05/06 13:15:59 by narnaud           #+#    #+#             */
/*   Updated: 2022/05/06 13:25:32 by narnaud          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

int	file_error(char *cmd, char *file, char *msg)
{
	ft_putstr_fd("Minishell: ", 2);
	ft_putstr_fd(cmd, 2);
	ft_putstr_fd(": ", 2);
	ft_putstr_fd(file, 2);
	ft_putstr_fd(": ", 2);
	ft_putstr_fd(msg, 2);
	ft_putchar_fd('\n', 2);	
	return (0);
}

char *get_var_value(t_datas *datas, char **line, int name_len)
{
		int i;
		char **env;
		char *name;
		char *value;

		name = ft_substr(*line, 1, name_len - 1);
		i = 0;
		value = NULL;
		while (datas->envp[i] && !value)
		{
			env = ft_split(datas->envp[i], '=');
			if (!ft_strncmp(name, env[0], name_len + 1))
				value = (free(env[0]), env[1]);
			else if (++i)
				ft_free_split(env);
		}
		free(name);
		if (value)
			free(env);
		else
			value = strdup("");
		return (value);
}

int	replace_var(t_datas *datas, char **line, char *tmp, int tmp_i)
{
	int		name_len;
	int		i;
	char	*value;

	if ((*line)[1] == '?')
	{
		value = ft_itoa(datas->exit_code);
		name_len = 2;
	}
	else
	{
		name_len = 1;
		while (ft_isalpha((*line)[name_len]) \
				|| ft_isdigit((*line)[name_len]) || (*line)[name_len] == '_')
			name_len++;
		value = get_var_value(datas, line, name_len);
	}
	i = 0;
	while (value[i])
		tmp[tmp_i++] = value[i++];
	tmp[tmp_i] = 0;
	*line += name_len;
	free(value);
	return (tmp_i);
}

char *expend_str(t_datas *datas, char *line)
{
	char	*tmp;
	int		tmp_i;

	tmp = ft_calloc(1024, sizeof *tmp);
	if (!tmp)
		free(tmp);
	tmp_i = 0;
	while (*line)
	{
		if (*line == '$')
			tmp_i = replace_var(datas, &line, tmp, tmp_i);
		tmp[tmp_i] = *line;
		line++;
		tmp_i++;
	}
	return (tmp);
}