157 lines
3.0 KiB
C
157 lines
3.0 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ms_env.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: tmaze <tmaze@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2019/09/20 11:43:53 by tmaze #+# #+# */
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/* Updated: 2019/11/10 20:49:35 by tmaze ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "minishell.h"
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void ft_envdelelem(t_env **elem)
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{
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if (elem)
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{
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ft_strdel(&((*elem)->key));
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ft_strdel(&((*elem)->val));
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ft_memdel((void**)elem);
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}
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}
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void ft_envdel(t_env **env)
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{
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t_env *tmp;
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while (*env)
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{
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tmp = *env;
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*env = (*env)->next;
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ft_envdelelem(&tmp);
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}
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}
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t_env *ft_envnew(char *env)
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{
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t_env *ret;
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int i;
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i = 0;
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ret = NULL;
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while (env[i] && env[i] != '=')
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i++;
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if (env[i] == '=' && (ret = (t_env*)ft_memalloc(sizeof(t_env))) != NULL)
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if ((ret->val = ft_strsub(env, i + 1, ft_strlen(env) - i - 1)) == NULL
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|| (ret->key = ft_strsub(env, 0, i)) == NULL)
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ft_envdelelem(&ret);
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return (ret);
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}
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t_env *ft_envaddend(t_env **alst, t_env *new)
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{
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t_env *tmp;
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if (new == NULL)
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return (NULL);
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if (*alst == NULL)
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*alst = new;
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else
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{
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tmp = *alst;
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while (tmp->next)
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tmp = tmp->next;
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tmp->next = new;
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}
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return (*alst);
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}
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t_env *ft_envgetelem(char *key, t_env *env)
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{
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t_env *it;
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it = env;
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while (it && !ft_strequ(it->key, key))
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it = it->next;
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return (it);
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}
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char *ft_envtochar(t_env *env)
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{
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int size;
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char *ret;
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size = ft_strlen(env->key) + ft_strlen(env->val) + 1;
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if ((ret = ft_strnew(size)) != NULL)
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{
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ft_strlcpy(ret, env->key, size);
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ft_strlcat(ret, "=", size);
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ft_strlcat(ret, env->val, size);
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}
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return (ret);
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}
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char **ft_envtotab(t_env *env)
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{
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t_env *it;
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char *new;
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char **ret;
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int i;
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i = 0;
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ret = NULL;
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it = env;
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while (it && (++i))
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it = it->next;
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if ((ret = (char**)ft_memalloc(sizeof(char*) * (i + 1))) == NULL)
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return (NULL);
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it = env;
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i = 0;
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while (it)
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{
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if ((new = ft_envtochar(it)) == NULL)
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ft_del_words_tables(&ret);
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if (new == NULL)
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break ;
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ret[i++] = new;
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it = it->next;
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}
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return (ret);
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}
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char *ft_envupdate(char *key, t_env *env, char *val)
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{
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t_env *elem;
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char *new;
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new = NULL;
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if ((elem = ft_envgetelem(key, env)) != NULL)
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if ((new = ft_strdup(val)) != NULL)
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{
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ft_strdel(&elem->val);
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elem->val = new;
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}
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return (new);
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}
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void ft_envclean(t_env **env)
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{
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t_env **it;
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t_env *tmp;
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it = env;
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while (*it)
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{
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if (ft_strequ((*it)->val, ""))
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{
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tmp = *it;
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*it = tmp->next;
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ft_envdelelem(&tmp);
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}
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else
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it = &((*it)->next);
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}
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}
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