Minishell2/parse_redirection.c at main · divisio74/Minishell2 · GitHub

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/*
** EPITECH PROJECT, 2025
** B-PSU-200-LYN-2-1-minishell2-pierre.baud
** File description:
** parse_redirection
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <fcntl.h>
#include "my.h"

void handle_redirection(char **args, int *i, redirection_t *redir)
{
    if (my_strcmp(args[*i], "<") == 0) {
        redir->input_file = args[*i + 1];
        (*i)++;
    }
    if (my_strcmp(args[*i], ">") == 0) {
        redir->output_file = args[*i + 1];
        redir->append = 0;
        (*i)++;
    }
    if (my_strcmp(args[*i], ">>") == 0) {
        redir->output_file = args[*i + 1];
        redir->append = 1;
        (*i)++;
    }
}

redirection_t parse_redirections(char **args)
{
    redirection_t redir = {NULL, NULL, 0};
    int i = 0;
    int j = 0;

    for (i = 0; args[i] != NULL; i++) {
        if (my_strcmp(args[i], "<") == 0 || my_strcmp(args[i], ">") == 0 ||
            my_strcmp(args[i], ">>") == 0) {
            handle_redirection(args, &i, &redir);
            continue;
        }
        args[j] = args[i];
        j++;
    }
    args[j] = NULL;
    return redir;
}

void handle_input_redirection(redirection_t redir)
{
    int fd = 0;

    if (!redir.input_file)
        return;
    fd = open(redir.input_file, O_RDONLY);
    if (fd == -1) {
        perror("Erreur ouverture fichier entrée");
        exit(1);
    }
    dup2(fd, STDIN_FILENO);
    close(fd);
}

void handle_output_redirection(redirection_t redir)
{
    int fd = 0;
    int flags = 0;

    if (!redir.output_file)
        return;
    flags = O_WRONLY | O_CREAT | (redir.append ? O_APPEND : O_TRUNC);
    fd = open(redir.output_file, flags, 0644);
    if (fd == -1) {
        perror("Erreur ouverture fichier sortie");
        exit(1);
    }
    dup2(fd, STDOUT_FILENO);
    close(fd);
}

void find_and_execute_command(char **args, char **envc)
{
    char *path = create_path(envc);
    char *dir = strtok(path, ":");
    char full_path[1024];

    while (dir) {
        if (!is_valid_path_length(dir, args[0])) {
            create_full_path(full_path, dir, args[0]);
            execve_f(full_path, args, envc);
        }
        dir = strtok(NULL, ":");
    }
    write(2, args[0], my_strlen(args[0]));
    write(2, ": Command not found\n", 20);
    exit(84);
}