From 1c9653a5a566d20b35aa7e158bcbd05188b86e65 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kha=C3=AFs=20COLIN?= <khais.colin@gmail.com>
Date: Mon, 14 Apr 2025 12:48:15 +0200
Subject: [PATCH] parsing: parse redirections

---
 src/parser/cmd_parsing.c | 84 ++++++++++++++++++++++++++++++++++++----
 1 file changed, 76 insertions(+), 8 deletions(-)

diff --git a/src/parser/cmd_parsing.c b/src/parser/cmd_parsing.c
index 37a18e8..4233281 100644
--- a/src/parser/cmd_parsing.c
+++ b/src/parser/cmd_parsing.c
@@ -6,11 +6,16 @@
 /*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/03/31 10:28:28 by jguelen           #+#    #+#             */
-/*   Updated: 2025/04/11 16:56:59 by khais            ###   ########.fr       */
+/*   Updated: 2025/04/14 12:48:26 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "cmd_parsing.h"
+#include <fcntl.h>
+#include "worddesc/worddesc.h"
+#include "wordlist/wordlist.h"
+#include <unistd.h>
+#include "../executing/here_doc/here_doc.h"
 
 /*
 ** NOTE: This file will temporarily include way more functions than allowed.
@@ -52,20 +57,83 @@ static bool	is_redir(t_worddesc *token)
 		|| token->token_type == HERE_DOC_REDIR_TOKEN);
 }
 
-/*
-** TODO Deal with heredocs properly and fill type, source, open_flags, cflags
-** and redirectee (Don't know about here_doc_eof).
-*/
+static t_redir_type	redir_type_from_token_type(t_token_type type)
+{
+	if (type == OUT_APPEND_REDIR_TOKEN)
+		return (FT_OUTPUT_APPEND_REDIR);
+	if (type == OUT_TRUNC_REDIR_TOKEN)
+		return (FT_OUTPUT_TRUNC_REDIR);
+	if (type == IN_REDIR_TOKEN)
+		return (FT_INPUT_REDIR);
+	if (type == HERE_DOC_REDIR_TOKEN)
+		return (FT_HEREDOC);
+	return (FT_INVALID_REDIR);
+}
+
+static int	redir_source_from_type(t_redir_type type)
+{
+	if (type == FT_OUTPUT_APPEND_REDIR || type == FT_OUTPUT_TRUNC_REDIR)
+		return (STDOUT_FILENO);
+	if (type == FT_INPUT_REDIR)
+		return (STDIN_FILENO);
+	return (-1);
+}
+
+static int	redir_open_flags_from_type(t_redir_type type)
+{
+	if (type == FT_OUTPUT_APPEND_REDIR)
+		return (O_CREAT | O_APPEND | O_WRONLY);
+	if (type == FT_OUTPUT_TRUNC_REDIR)
+		return (O_CREAT | O_TRUNC | O_WRONLY);
+	return (0);
+}
+
+
+static t_redirect	*redir_from_words(t_worddesc *operator, t_worddesc *specifier, t_minishell *app)
+{
+	t_redirect	*redir;
+
+	if (operator == NULL || specifier == NULL)
+		return (NULL);
+	redir = ft_calloc(1, sizeof(t_redirect));
+	if (redir == NULL)
+		return (ft_errno(FT_EERRNO), NULL);
+	redir->type = redir_type_from_token_type(operator->token_type);
+	redir->source = redir_source_from_type(redir->type);
+	redir->open_flags = redir_open_flags_from_type(redir->type);
+	redir->c_flags = 0644;
+	redir->redirectee.dest = -1;
+	if (redir->type == FT_HEREDOC)
+	{
+		redir->here_doc_eof = ft_strdup(specifier->word);
+		redir->redirectee.dest = here_doc(specifier, STDIN_FILENO, app);
+		worddesc_destroy(specifier);
+	}
+	else
+		redir->redirectee.filename = specifier;
+	worddesc_destroy(operator);
+	return (redir);
+}
+
 t_redirect	*minishell_redir_parse(t_minishell *app, t_cmd_builder *builder)
 {
 	ft_printf("%s() %s\n", __FUNCTION__, builder->tokens->word->word);
-	t_redirect	*redir;
+	t_redirect	*redir_list;
+	t_worddesc	*redir_operator;
+	t_worddesc	*redir_specifier;
+	t_redirect	*new_redir;
 
-	redir = NULL;
+	redir_list = NULL;
 	while (is_redir(builder->tokens->word))
 	{
+		if (builder->tokens->next == NULL)
+			return (redirect_destroy(redir_list), NULL);
+		redir_operator = wordlist_pop(&builder->tokens);
+		redir_specifier = wordlist_pop(&builder->tokens);
+		new_redir = redir_from_words(redir_operator, redir_specifier, app);
+		t_redirect_add_back(&redir_list, new_redir);
 	}
-	return (redir);
+	return (redir_list);
 }
 
 /*