lexing refactoring

2021-10-30 22:47:02 +02:00
parent ab2aa509df
commit c0ef57499a
6 changed files with 227 additions and 199 deletions
--- a/srcs/lexing/lexing.c
+++ b/srcs/lexing/lexing.c
@@ -0,0 +1,76 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   lexing.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/10/19 08:38:55 by lperrey           #+#    #+#             */
+/*   Updated: 2021/10/30 22:37:48 by lperrey          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+int				fill_token(t_token *t, char *input, int *i, int *t_i);
+
+static t_token	*alloc_token(size_t content_len);
+static int		tokenize_input(t_token *t, char *input, size_t input_len);
+
+t_token	*input_to_tokens(char *input)
+{
+	t_token	*t_head;
+	t_token	*t_tmp;
+	size_t	input_len;
+	
+	input_len = ft_strlen(input);
+	t_head = alloc_token(input_len);
+	if (!t_head)
+		return (ft_retp_perror(NULL, "alloc_token() error"));
+	if (!tokenize_input(t_head, input, input_len))
+		return (ft_lstclear((t_list **)&t_head, free));
+	t_tmp = (t_token *)ft_lstbeforelast((t_list *)t_head);
+	if (t_tmp && !t_tmp->next->id)
+	{
+		ft_lstdelone((t_list *)t_tmp->next, free);
+		t_tmp->next = NULL;
+	}
+	return (t_head);
+}
+
+static t_token	*alloc_token(size_t content_len)
+{
+	t_token	*token;
+
+	token = ft_calloc(1, sizeof *token);
+	if (!token)
+		return (NULL);
+	token->content = ft_calloc(content_len + 1, 1);
+	if (!token->content)
+		return (ft_retp_free(NULL, token, free));
+	return (token);
+}
+
+static int	tokenize_input(t_token *t, char *input, size_t input_len)
+{
+	int	i;
+	int	t_i;
+
+	i = 0;
+	t_i = 0;
+	while (input[i])
+	{
+		if (fill_token(t, input, &i, &t_i) == DELIMITE_TOKEN && input[i] && t_i)
+		{
+			if (!t->id)
+				t->id = T_WORD;
+			t->next = alloc_token(input_len - i);
+			if (!t->next)
+				return (ft_reti_perror(0, "alloc_token() error"));
+			t = t->next;
+			t_i = 0;
+		}
+	}
+	if (!t->id && t_i)
+		t->id = T_WORD;
+	return (1);
+}