env.c File Reference

#include "env.h"
#include "libft.h"
#include <stdlib.h>
#include <stdio.h>

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Functions
void	init_env (t_env **data_envp, char **envp)
void	add_env_node (t_env **data_envp, char *line)
char *	get_env (t_env *envp, const char *key)
void	set_env (t_env **env, const char *key, const char *value)
int	unset_env (t_env **env, const char *name)

Function Documentation

add_env_node()

void add_env_node	(	t_env **	data_envp,
		char *	line
	)

Definition at line 33 of file env.c.

{
    t_env   *new_node;
    char    *eq_pos;
    t_env   *curr;
 
    new_node = malloc(sizeof(t_env));
    if (!new_node)
        return ;
    eq_pos = ft_strchr(line, '=');
    if (!eq_pos)
        return ;
    new_node->key = ft_strndup(line, eq_pos - line);
    new_node->value = ft_strdup(eq_pos + 1);
    new_node->next = NULL;
    if (!*data_envp)
        *data_envp = new_node;
    else
    {
        curr = *data_envp;
        while (curr->next)
            curr = curr->next;
        curr->next = new_node;
    }
}

References ft_strchr(), ft_strdup(), ft_strndup(), s_env::key, s_env::next, and s_env::value.

Referenced by init_env().

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get_env()

char * get_env	(	t_env *	envp,
		const char *	key
	)

Definition at line 59 of file env.c.

{
    t_env   *curr_node;
 
    curr_node = envp;
    while (curr_node)
    {
        if (ft_strcmp(curr_node->key, key) == 0)
            return (curr_node->value);
        curr_node = curr_node->next;
    }
    return (NULL);
}

References ft_strcmp(), s_env::key, s_env::next, and s_env::value.

Referenced by builtin_cd(), ft_find_path(), generate_prompt_string(), get_env_variable(), handle_get_shell_variable(), test_get_env(), test_set_env(), and test_unset_env().

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init_env()

void init_env	(	t_env **	data_envp,
		char **	envp
	)

Definition at line 24 of file env.c.

{
    int i;
 
    i = -1;
    while (envp[++i])
        add_env_node(data_envp, envp[i]);
}

References add_env_node().

Referenced by init_ms_data(), test_get_env(), test_init_env(), and test_set_env().

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set_env()

void set_env	(	t_env **	env,
		const char *	key,
		const char *	value
	)

Definition at line 73 of file env.c.

{
    t_env   *current;
    t_env   *new_env;
 
    current = *env;
    while (current)
    {
        if (ft_strcmp(current->key, key) == 0)
        {
            free(current->value);
            current->value = ft_strdup(value);
            return ;
        }
        current = current->next;
    }
    new_env = malloc(sizeof(t_env));
    new_env->key = ft_strdup(key);
    new_env->value = ft_strdup(value);
    new_env->next = *env;
    *env = new_env;
}

References ft_strcmp(), ft_strdup(), s_env::key, s_env::next, and s_env::value.

Referenced by add_env(), builtin_cd(), test_set_env(), and test_unset_env().

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unset_env()

int unset_env	(	t_env **	env,
		const char *	name
	)

Definition at line 96 of file env.c.

{
    t_env   *current;
    t_env   *prev;
 
    current = *env;
    prev = NULL;
    while (current)
    {
        if (ft_strcmp(current->key, key) == 0)
        {
            if (prev)
                prev->next = current->next;
            else
                *env = current->next;
            free(current->key);
            free(current->value);
            free(current);
            return (0);
        }
        prev = current;
        current = current->next;
    }
    return (-1);
}

References ft_strcmp(), s_env::key, s_env::next, and s_env::value.

Referenced by builtin_unset(), and test_unset_env().

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