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authornass1pro <nass1pro@gmail.com>2020-06-09 19:48:34 +0200
committernass1pro <nass1pro@gmail.com>2020-06-13 11:31:00 +0200
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+/* ************************************************************************** */
+/* */
+/* ::: :::::::: */
+/* ft_htset.c :+: :+: :+: */
+/* +:+ +:+ +:+ */
+/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
+/* +#+#+#+#+#+ +#+ */
+/* Created: 2020/01/30 08:41:52 by cacharle #+# #+# */
+/* Updated: 2020/04/01 18:02:12 by charles ### ########.fr */
+/* */
+/* ************************************************************************** */
+
+#include "libft.h"
+#include "libft_ht.h"
+
+/*
+** \brief Create/Update a entry in hash table.
+** \note If `key` already exist in `ht`
+** only updates the list node content.
+** Else create a new list node in addition the list content.
+** \param ht Hash table where the entry is modified
+** \param key Key of the new entry
+** \param value Value of the new entry
+** \param del Destroy function in case the entry is modified.
+** \return Pointer to the created entry, NULL if an allocation failed.
+*/
+
+t_ftht_entry *ft_htset(t_ftht *ht, char *key, void *value,
+ void (*del)(t_ftht_entry*))
+{
+ t_ftht_digest digest;
+ t_ftht_entry *content;
+ t_ftht_bucket bucket;
+ t_ftlst *tmp;
+
+ if (ht == NULL || key == NULL)
+ return (NULL);
+ if ((content = ft_htentry_new(key, value)) == NULL)
+ return (NULL);
+ digest = ft_hthash(ht, key);
+ tmp = ft_lstlfind(ht->buckets[digest], ft_inter_htkey_cmp, key);
+ if (tmp != NULL)
+ {
+ if (del != NULL)
+ del(tmp->data);
+ tmp->data = content;
+ return ((t_ftht_entry*)tmp->data);
+ }
+ if ((bucket = ft_lstnew(content)) == NULL)
+ {
+ del(content);
+ return (NULL);
+ }
+ ft_lstpush_front(ht->buckets + digest, bucket);
+ return (content);
+}