env_manip: make it compile

src/env_get_set.c

@@ -6,26 +6,36 @@
 /*   By: jguelen <marvin@42.fr>                     +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/02/14 18:43:38 by jguelen           #+#    #+#             */
-/*   Updated: 2025/02/15 16:15:12 by jguelen          ###   ########.fr       */
+/*   Updated: 2025/02/18 15:16:58 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "env_manip.h"
+#include "libft.h"
 
-/*Designed to get the parameter name for a certain line stored in an envp*/
+/*
+** Get the key part of a line of envp
+**
+** given that line is of the form key=value, return a string containing key,
+** which is allocated and must be freed.
+**
+** if line is null or is an empty string, return NULL
+**
+** if allocation fail, return NULL
+*/
 char	*envp_get_key(char *line)
 {
 	char	*key;
 	size_t	key_len;
-	size_t	i;
 
 	key_len = 0;
-	if (!line || !(*line))
+	if (line == NULL || line[0] == '\0')
 		return (NULL);
 	while (line[key_len] != '=')
 		key_len++;
 	key = malloc((key_len + 1) * sizeof(char));
-	i = 0;
+	if (key == NULL)
+		return (NULL);
 	ft_memmove(key, line, key_len);
 	key[key_len] = '\0';
 	return (key);

src/env_manip.h

@@ -0,0 +1,43 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   env_manip.h                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jguelen <marvin@42.fr>                     +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/02/14 13:46:39 by jguelen           #+#    #+#             */
+/*   Updated: 2025/02/16 12:55:27 by jguelen          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef ENV_MANIP_H
+# define ENV_MANIP_H
+
+# include <stdlib.h>
+# include "libft.h"
+
+typedef struct s_env
+{
+	char			*key;
+	char			*value;
+	struct s_env	*next;
+}	t_env;
+
+char	*envp_get_key(char *line);
+char	*envp_get_val(char *line);
+void	env_rm_entry(t_env **env, char *key);
+/*WARNING: env_set_entry does NOT check for the actual validity of an
+identifier (i.e. key) in the sense that it does not check what characters
+compose it.*/
+t_env	*env_set_entry(t_env **env, char *key, char *value);
+char	*env_get_val(t_env *env, char *key);
+char	**envp_from_env(t_env *env);
+t_env	*env_from_envp(char **envp);
+/*env_manip_utils*/
+size_t	env_get_size(t_env *env);
+void	env_destroy_node(t_env *node);
+void	env_destroy(t_env **env);
+void	envp_destroy_envp(char **envp);
+t_env	*env_find_node_bykey(t_env *env, char *key);
+
+#endif