heredoc and builtins fix

src/executor/heredoc_file.c

@@ -0,0 +1,99 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   heredoc_file.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/14 17:50:00 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/14 17:50:00 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "heredoc_internal.h"
+#include <errno.h>
+#include "variables.h"
+
+static char	*build_tmp_path(unsigned int id)
+{
+	char	*suffix;
+	char	*path;
+
+	suffix = ft_uitoa(id);
+	if (suffix == NULL)
+		return (errno = ENOMEM, NULL);
+	path = ft_strnjoin(2, "/tmp/minishell_heredoc_", suffix);
+	free(suffix);
+	if (path == NULL)
+		return (errno = ENOMEM, NULL);
+	return (path);
+}
+
+int	executor_heredoc_open_tmp(char **path_out)
+{
+	static unsigned int	counter;
+	char				*path;
+	unsigned int		attempts;
+	int					fd;
+
+	attempts = 0;
+	while (attempts++ < 10000)
+	{
+		path = build_tmp_path(counter++);
+		if (path == NULL)
+			return (-1);
+		fd = open(path, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600);
+		if (fd != -1)
+			return (*path_out = path, fd);
+		free(path);
+		if (errno != EEXIST)
+			return (-1);
+	}
+	errno = EEXIST;
+	return (-1);
+}
+
+char	*executor_heredoc_read_line(t_minishell *minishell)
+{
+	char	*prompt;
+	char	*line;
+	size_t	len;
+
+	if (!isatty(STDIN_FILENO))
+	{
+		line = get_next_line(STDIN_FILENO);
+		if (line == NULL)
+			return (NULL);
+		len = ft_strlen(line);
+		if (len > 0 && line[len - 1] == '\n')
+			line[len - 1] = '\0';
+		return (line);
+	}
+	prompt = get_var("PS2", minishell);
+	if (prompt == NULL)
+		prompt = DEFAULT_PS2;
+	return (readline(prompt));
+}
+
+void	executor_heredoc_discard_tmp(int fd, char *path)
+{
+	if (fd >= 0)
+		close(fd);
+	if (path != NULL)
+	{
+		unlink(path);
+		free(path);
+	}
+}
+
+bool	executor_heredoc_finalize_tmp(t_redirection *rd, int fd, char *path,
+		uint8_t *exit_status)
+{
+	if (close(fd) == -1)
+		return (executor_heredoc_discard_tmp(-1, path), perror("close"),
+			*exit_status = EXIT_FAILURE, false);
+	free(rd->target);
+	rd->target = path;
+	rd->heredoc_ready = true;
+	return (true);
+}