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env_mod.c
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env_mod.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* env_mod.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: mleclair <mleclair@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2017/01/09 15:10:15 by mleclair #+# #+# */
/* Updated: 2017/05/12 14:27:20 by mleclair ### ########.fr */
/* */
/* ************************************************************************** */
#include "chell.h"
int find_param(char **split, char *str)
{
int i;
int j;
i = 0;
while (split[i])
{
j = 0;
while (str[j] && str[j] != '=' && str[j] == split[i][j])
j++;
if ((str[j] == '=' || str[j] == 0) && split[i][j] == '=')
return (i);
++i;
}
return (-1);
}
void modif_var_env(t_env *env, char *str, int i)
{
char *new_para;
int j;
j = 0;
while (str[j] && str[j] != '=')
++j;
if (j != 0 && str[j] && str[j + 1])
{
new_para = ft_strdup(str);
free(env->ev[i]);
env->ev[i] = new_para;
}
}
void add_var_to_env(t_env *env, char *str)
{
int i;
int j;
char **new_env;
i = find_param(env->ev, str);
if (i == -1 && !(j = 0) && (ft_isalpha(str[0]) || str[0] == '?'))
{
while (str[j] && str[j] != '=')
++j;
if (j != 0 && str[j] && str[j + 1] && !(i = 0))
{
while (env->ev[i])
++i;
new_env = palloc(sizeof(char *) * (i + 2));
new_env[i + 1] = 0;
i = -1;
while (env->ev[++i])
new_env[i] = env->ev[i];
new_env[i] = ft_strdup(str);
free(env->ev);
env->ev = new_env;
}
}
else if (i != -1)
modif_var_env(env, str, i);
}
void add_pair_to_env(t_env *env, char *key, char *val)
{
char *tmp;
tmp = palloc(ft_strlen(key) + ft_strlen(val) + 2);
*tmp = '\0';
ft_strcat(tmp, key);
ft_strcat(tmp, "=");
ft_strcat(tmp, val);
add_var_to_env(env, tmp);
free(tmp);
}
void suppr_var_env(t_env *env, char *str)
{
int i;
i = find_param(env->ev, str);
if (i != -1)
{
free(env->ev[i]);
while (env->ev[i] && ++i)
env->ev[i - 1] = env->ev[i];
}
}