178 lines
2.6 KiB
C
178 lines
2.6 KiB
C
#include "../../includes/minishell.h"
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void free_null_ptr(void *ptr)
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{
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if (ptr != NULL)
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{
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free(ptr);
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ptr = NULL;
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}
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}
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char **copy_env_var(char **envp, int count)
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{
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char **new_env;
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int i;
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i = 0;
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new_env = malloc(sizeof(char *) * (count + 1));
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if (!new_env)
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return (NULL);
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new_env[count] = NULL;
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while (envp[i] && i < count)
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{
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new_env[i] = ft_strdup(envp[i]);
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free_null_ptr(envp[i]);
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i++;
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}
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free_null_ptr(envp);
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return (new_env);
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}
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int count_var(char **envp)
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{
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int i;
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i = 0;
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if (!envp)
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return (-1);
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while (envp[i])
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i++;
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return (i);
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}
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char *get_var_value(char *key, char **envp)
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{
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char *tmp;
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int i;
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tmp = ft_strjoin(key, "=");
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if (!tmp)
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return (NULL);
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i = 0;
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while (envp[i])
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{
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if (ft_strncmp(envp[i], tmp, ft_strlen(tmp)) == 0)
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{
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free_null_ptr(tmp);
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return (ft_strchr(envp[i], '=') + 1);
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}
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i++;
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}
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free_null_ptr(tmp);
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return (NULL);
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}
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bool is_valid_key(char *key, t_data *data)
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{
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char *tmp;
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int i;
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tmp = ft_strjoin(key, "=");
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if (!tmp)
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return (false);
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while (data->env[i])
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{
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if (ft_strncmp(data->env[i], tmp, ft_strlen(tmp)) == 0)
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{
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free_null_ptr(tmp);
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return (true);
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}
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i++;
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}
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free_null_ptr(tmp);
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return (false);
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}
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int get_var_index(char *key, t_data *data)
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{
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int i;
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char *new_key;
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new_key = ft_strjoin(key, "=");
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if (!new_key)
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return (-1);
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i = 0;
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while (data->env[i])
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{
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if (ft_strncmp(data->env[i], new_key, ft_strlen(new_key)) == 0)
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{
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free_null_ptr(new_key);
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return (i);
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}
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i++;
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}
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free_null_ptr(new_key);
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return (-1);
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}
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int remove_env_var(char *key, t_data *data)
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{
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int i;
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int j;
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i = get_var_index(key, data);
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if (i == -1)
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return (0);
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j = i;
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free_null_ptr(data->env[i]);
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while (data->env[i + 1])
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{
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data->env[i] = ft_strdup(data->env[i + 1]);
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free_null_ptr(data->env[i + 1]);
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j++;
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i++;
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}
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data->env = copy_env_var(data->env, j);
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if (data->env)
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return (1);
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return (0);
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}
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void set_var_env(char *key, char *value, t_data *data)
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{
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int i;
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char *tmp;
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i = get_var_index(key, data);
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if (!value)
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value = "";
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tmp = ft_strjoin("=", value);
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if (!tmp)
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return ;
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if (i != -1 && data->env[i])
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{
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free_null_ptr(data->env[i]);
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data->env[i] = ft_strjoin(key, tmp);
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}
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else
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{
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i = count_var(data->env);
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data->env = copy_env_var(data->env, i + 1);
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if (!data->env)
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return ;
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data->env[i] = ft_strjoin(key, tmp);
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}
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free_null_ptr(tmp);
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return ;
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}
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char **init_env(char **envp)
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{
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char **env;
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int i;
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i = 0;
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env = malloc(sizeof(char *) * (count_var(envp) + 1));
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if (!env)
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return (NULL);
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env[count_var(envp)] = NULL;
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while (envp[i])
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{
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env[i] = ft_strdup(envp[i]);
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i++;
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}
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return (env);
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}
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