From a535e5808f280a27e2725a6e4452d2ed0dbc3d41 Mon Sep 17 00:00:00 2001
From: narnaud <nicolas.rr.arnaud@gmail.com>
Date: Sat, 7 May 2022 01:33:44 +0200
Subject: [PATCH] export and unset

---
 env.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 55 insertions(+), 8 deletions(-)

diff --git a/env.c b/env.c
index 20fe4eb..3ebeecb 100755
--- a/env.c
+++ b/env.c
@@ -26,14 +26,57 @@ int	is_valid_identifier(char *ident)
 	}
 	return (0);
 }
+void	clean_env(t_datas *datas)
+{
+	int i;
+	int j;
 
+	i = 0;
+	j = 0;
+	while (i < 1024)
+	{
+		if (!datas->envp[i])
+		{
+			j = 1;
+			while (!datas->envp[i + j] && (i + j) < 1024)
+				j++;
+			if (i + j == 1024)
+				return ;
+			datas->envp[i] = datas->envp[i + j];
+			datas->envp[i + j] = NULL;
+		}
+		i++;
+	}
+}
 int	ft_unset(t_datas *datas, t_command *cmd)
 {
-	(void)datas;
-	if (!cmd->argv[1])
-	{
-		//read(input_fd, PIPE_MAX_SIZE);
+	char	**env;
+	int		i;
+	int		j;
+	int		name_len;
+
+	if (cmd->argc < 2)
 		return (1);
+	env = datas->envp;
+	i = 1;
+	while (i < cmd->argc && datas->envp[i - 1])
+	{
+		name_len = ft_strlen(cmd->argv[i]);
+		j = 0;
+		while (datas->envp[j])
+		{
+			env = ft_split(datas->envp[j], '=');
+			if (!ft_strncmp(cmd->argv[i], env[0], name_len + 1))
+			{
+				free(datas->envp[j]);
+				datas->envp[j] = NULL;
+				clean_env(datas);
+				continue;
+			}
+			ft_free_split(env);
+			j++;
+		}
+		i++;
 	}
 	return (0);
 }
@@ -60,11 +103,15 @@ int	ft_env(t_datas *datas, t_command *cmd)
 int	ft_export(t_datas *datas, t_command *cmd)
 {
 	char	**new;
+	int		name_len;
 	char	**env;
 	int		i;
 
 	i = 0;
+	if (cmd->argc < 2)
+		return  (0);
 	new = ft_split(cmd->argv[1], '=');
+	name_len = ft_strlen(new[0]);
 	if (!is_valid_identifier(new[0]))
 	{
 		ft_putstr_fd("export: not an identifier: ", 2);
@@ -75,14 +122,14 @@ int	ft_export(t_datas *datas, t_command *cmd)
 	while (datas->envp[i])
 	{
 		env = ft_split(datas->envp[i], '=');
-		if (!ft_strncmp(new[0], env[0], ft_strlen(new[0]) + 1))
+		if (!ft_strncmp(new[0], env[0], name_len + 1))
 		{
-			datas->envp[i] = cmd->argv[1];
+			datas->envp[i] = ft_strdup(cmd->argv[1]);
 			return (1);
 		}
+		ft_free_split(env);
 		i++;
 	}
-	datas->envp[i] = cmd->argv[1];
-	datas->envp[i + 1] = NULL;
+	datas->envp[i] = ft_strdup(cmd->argv[1]);
 	return (1);
 }