Dev (#2)

* Restart from scratch

branched out on dev
removed all previous source files
started test on new env2lst function

* norm: splitted functions in main into appropriate file

Moved lstdelenvelem & env2lst to ms_env.c
Normed out files

* Feat(WIP): Added possibility to cmd_env to execute commands with
altered env.

Added dummy function for cd, echo, setenv & unsetenv
Started work on env copy feature

* feature: switched env from ft_list to specific list

* feature: added execution of commands from path

* feature: added env, setenv & unsetenv builtins

added -i option & command execution to env
added setenv & unsetenv builtins

* Clean-up: normed out files

* Changed comportment on error for check_path functions

* feature: added completion for ~ and ${}

WIP leaks detected on ${} completion

* fix leak on  ext need test

* feature: added echo cmd

changed printf ref to ft_printf

* feature: add cd built-in

* Simple norm-out

* moved env functions to libft

* fixed out-of-memory access in extension

* Resolved infinite loop in extension revolving

WIP norming in cd

* Normedout cmd_cd.c

* Normed out functions in cmd_cd

* Normed out funtions

sorting out needed

* removed -fsanitize from Makefile

* corrected env -i crash & SHLVL

* Delete norm.txt

* added put_error_cd2 in put_error_cd.c

* added inline environment

srcs/ms_ext.c

@@ -0,0 +1,117 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ms_ext.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/10/25 18:21:47 by tmaze             #+#    #+#             */
+/*   Updated: 2020/01/30 15:42:17 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+void	*return_null(char *msg)
+{
+	ft_printf("%s\n", msg);
+	return (NULL);
+}
+
+void	ft_strreplace(char **dst, char *src, int *index, t_env *elem)
+{
+	if (*dst != NULL)
+		ft_strdel(dst);
+	*dst = src;
+	*index = ft_strlen(elem->val);
+}
+
+t_env	*search_key(t_env *env, char *cmd, int index)
+{
+	t_env	*it;
+	t_env	*ret;
+	int		i;
+	int		j;
+
+	it = env;
+	ret = NULL;
+	while (it && cmd[index + 1])
+	{
+		i = 0;
+		j = index;
+		while (it->key[i] && cmd[j] && it->key[i] == cmd[j])
+		{
+			i++;
+			j++;
+		}
+		if (!it->key[i] && (!ret || ft_strlen(it->key) > ft_strlen(ret->key)))
+			ret = it;
+		it = it->next;
+	}
+	return (ret);
+}
+
+char	*replace_env(char *src, t_env *elem, int key_size, int i)
+{
+	char	*ret;
+	int		res_len;
+
+	res_len = ft_strlen(src) - key_size + ft_strlen(elem->val);
+	ft_printf("size replace: %d\n", res_len);
+	if ((ret = ft_strnew(res_len)) != NULL)
+	{
+		ft_strncpy(ret, src, i);
+		ft_strlcat(ret, elem->val, res_len + 1);
+		ft_strlcat(ret, src + key_size, res_len + 1);
+	}
+	else
+		ft_printf("minishell: memory error\n");
+	return (ret);
+}
+
+char	*resolve_complete_key(char **src, int *index, t_env *env)
+{
+	t_env	*tmp;
+	char	*ret;
+
+	if ((tmp = search_key(env, *src, *index + 1)) != NULL)
+	{
+		if ((ret = replace_env(*src, tmp, ft_strlen(tmp->key)
+			+ 1, *index)) != NULL)
+		{
+			ft_strreplace(src, ret, index, tmp);
+			return (*src);
+		}
+		else
+			return (return_null("minishell: memory error"));
+	}
+	else
+		return (return_null("minishell: variable not found"));
+}
+
+char	**res_ext(char **av, t_env *env)
+{
+	int		i[2];
+	t_env	*tmp;
+	char	*ret;
+
+	i[0] = -1;
+	while (av && av[++i[0]] && !(i[1] = 0))
+	{
+		while (av[i[0]][i[1]])
+		{
+			if (av[i[0]][i[1]] != '$' && av[i[0]][i[1]] != '~')
+				i[1]++;
+			else if (av[i[0]][i[1]] == '~' && (tmp = ft_envgetelem("HOME", env))
+				!= NULL && (ret = replace_env(av[i[0]], tmp, 1, i[1])) != NULL)
+				ft_strreplace(&av[i[0]], ret, &i[1], tmp);
+			else if (av[i[0]][i[1]] == '~' && (tmp = ft_envgetelem("HOME", env))
+				== NULL)
+				return (return_null("Entry HOME not found\n"));
+			else if (av[i[0]][i[1]] == '$'
+				&& resolve_complete_key(&av[i[0]], &i[1], env) == NULL)
+				return (NULL);
+		}
+	}
+	return (av);
+}