loc_env_var_handler_utils.c

Go to the documentation of this file.

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   loc_env_var_handler_utils.c                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rmikhayl <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/09/10 01:45:18 by rmikhayl          #+#    #+#             */
/*   Updated: 2024/09/10 01:45:21 by rmikhayl         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "tokens.h"
 
char    *ev_loop(char **start, t_ms_data *data, char *str_start, \
            char *expanded_str)
{
    char    *var_name;
    char    *var_start;
    char    *expanded_var;
    char    *tmp;
    int     len_before_var;
 
    var_start = *start;
    (*start)++;
    while (**start && (ft_isalnum(**start) || **start == '_'))
        (*start)++;
    var_name = ft_substr(var_start, 0, *start - var_start);
    expanded_var = expand_env_and_loc_var(var_name, data);
    free(var_name);
    len_before_var = var_start - str_start;
    tmp = ft_substr(str_start, 0, len_before_var);
    expanded_str = ft_strjoin_free(expanded_str, tmp);
    free(tmp);
    expanded_str = ft_strjoin_free(expanded_str, expanded_var);
    free(expanded_var);
    return (expanded_str);
}
 
char    *expand_variable(char **start, t_ms_data *data)
{
    char    *expanded_str;
    char    *str_start;
    char    *result;
 
    result = NULL;
    str_start = *start;
    expanded_str = ft_strdup("");
    while (**start && **start != '\0')
    {
        if (**start == '$')
        {
            expanded_str = ev_loop(start, data, str_start, expanded_str);
            str_start = *start;
            str_start = str_start_adj(str_start);
        }
        else
            (*start)++;
    }
    if (str_start != *start)
    {
        result = ft_substr(str_start, 0, *start - str_start);
        expanded_str = ft_strjoin_free(expanded_str, result);
        free(result);
    }
    return (expanded_str);
}
 
void    handle_local_vars(t_ms_data *data, char *arg)
{
    char    *p;
    int     valid_var;
 
    p = arg;
    valid_var = 1;
    if (arg[0] != '=' && ft_strchr(arg, '='))
    {
        while (p < ft_strchr(arg, '='))
        {
            if (!ft_isalnum(*p++))
            {
                valid_var = 0;
                break ;
            }
        }
        if (valid_var)
            handle_add_set_shell_variable(&data->shell_variables, arg);
    }
}