loc_env_var_handler_heredoc.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   loc_env_var_handler_heredoc.c                      :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: dmdemirk <dmdemirk@student.42london.c      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/07/11 14:32:29 by dmdemirk          #+#    #+#             */
/*   Updated: 2024/07/11 16:00:30 by dmdemirk         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "shell.h"
#include "tokens.h"
#include "redirection.h"
#include "execute.h"
#include <fcntl.h>
#include <sys/wait.h>
#include "signals.h"
 
static char *assemble_result(char **tokens, size_t result_len);
char        *token_adj(char *arg);
char        *finalize_token(char *tmp_token, char *orig_token);
size_t      process_single_token(char **token, t_ms_data *data);
size_t      process_tokens(char **tokens, t_ms_data *data);
 
char    *process_and_reassemble(char *line, t_ms_data *data)
{
    char    **tokens;
    size_t  result_len;
    char    *result;
 
    tokens = ft_split(line, ' ');
    free(line);
    if (!tokens)
        return (NULL);
    result_len = process_tokens(tokens, data);
    result = assemble_result(tokens, result_len);
    ft_free_2d_arr(tokens);
    return (result);
}
 
size_t  process_tokens(char **tokens, t_ms_data *data)
{
    int     i;
    size_t  result_len;
 
    result_len = 0;
    i = 0;
    while (tokens[i])
    {
        result_len += process_single_token(&tokens[i], data);
        i++;
    }
    return (result_len);
}
 
size_t  process_single_token(char **token, t_ms_data *data)
{
    char    *orig_token;
    char    *tmp_token;
    char    *new_token;
    size_t  new_len;
 
    orig_token = *token;
    tmp_token = expand_variable(token, data);
    new_token = finalize_token(tmp_token, orig_token);
    *token = new_token;
    free(orig_token);
    new_len = ft_strlen(new_token) + 1;
    return (new_len);
}
 
char    *finalize_token(char *tmp_token, char *orig_token)
{
    char    *processed_token;
    char    *new_token;
 
    if (tmp_token)
    {
        processed_token = token_adj(tmp_token);
        if (processed_token != tmp_token)
        {
            new_token = ft_strdup(processed_token);
            free(tmp_token);
        }
        else
            new_token = tmp_token;
        free(processed_token);
    }
    else
        new_token = ft_strdup(orig_token);
    return (new_token);
}
 
static char *assemble_result(char **tokens, size_t result_len)
{
    char    *result;
    int     i;
 
    result = malloc(result_len + 1);
    if (!result)
        return (NULL);
    *result = '\0';
    i = 0;
    while (tokens[i])
    {
        ft_strcat(result, tokens[i]);
        if (tokens[i + 1])
            ft_strcat(result, " ");
        i++;
    }
    return (result);
}