update: added extremely basic parsing, only for separated environment variables

2025-10-23 14:10:48 +02:00
parent 92ed2bbd3e
commit b55dd50aa5
4 changed files with 149 additions and 1 deletions
--- a/src/parser/parser.c
+++ b/src/parser/parser.c
@@ -0,0 +1,88 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   parser.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/10/22 18:37:38 by sede-san          #+#    #+#             */
+/*   Updated: 2025/10/23 14:07:20 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+static char	**expand_paths(char **argv);
+static char	**expand_envs(char **argv);
+static int	count_argv(char **argv);
+
+char	*parse(
+	char *line,
+	t_minishell *minishell
+){
+	t_command	command;
+
+	if (!line || !*line)
+		return (NULL);
+	command.argv = expand_envs(ft_split(line, SPACE));
+	command.argc = count_argv(command.argv);
+	if (!command.argc)
+		return (NULL);
+////////////////////////////////////////////////////////////////////////////////
+	//* DEBUG
+	int	i = -1;
+	while (command.argv[++i])
+		printf("argv[%i]: %s\n", i, command.argv[i]);
+	ft_free_split(command.argv);
+////////////////////////////////////////////////////////////////////////////////
+	return (NULL);
+}
+
+// not sure of this step here
+static char	**expand_paths(
+	char **argv
+){
+	if (!argv)
+		return (NULL);
+	return (argv);
+}
+
+static char	**expand_envs(
+	char **argv
+){
+	int		i;
+	char	*env;
+
+	if (!argv)
+		return (NULL);
+	else if (!*argv) // check if ft_split returned and empty matrix
+	{
+		ft_free_split(argv);
+		return (NULL);
+	}
+	i = -1;
+	while (argv[++i])
+	{
+		if (!ft_strchr(argv[i], DOLLAR)
+			|| (ft_strchr(argv[i], DOLLAR) && ft_strchr(argv[i], SINGLE_QUOTE) && ft_strchr(argv[i] + (ft_strchr(argv[i], SINGLE_QUOTE) + 1 - argv[i]), SINGLE_QUOTE))) // env is surrounded by single quote
+			continue ;
+		env = getenv(ft_strchr(argv[i], DOLLAR) + 1);
+		free(argv[i]);
+		if (env)
+			argv[i] = ft_strdup(env);
+		else
+			argv[i] = ft_strdup("");
+	}
+	return (argv);
+}
+
+static int	count_argv(
+	char **argv
+){
+	int	i;
+
+	i = 0;
+	while (argv[i])
+		i++;
+	return (i);
+}