Enlightenment CVS committal
Author : cedric
Project : e17
Module : proto/eina
Dir : e17/proto/eina/src/lib
Modified Files:
eina_inlist.c
Log Message:
Add Inlist Iterator.
===================================================================
RCS file: /cvs/e/e17/proto/eina/src/lib/eina_inlist.c,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -3 -r1.4 -r1.5
--- eina_inlist.c 6 Aug 2008 18:15:19 -0000 1.4
+++ eina_inlist.c 12 Aug 2008 15:58:41 -0000 1.5
@@ -22,7 +22,108 @@
/* FIXME: TODO please, refactor this :) */
/*============================================================================*
- * API
*
+ * Local *
+
*============================================================================*/
+typedef struct _Eina_Iterator_Inlist Eina_Iterator_Inlist;
+typedef struct _Eina_Accessor_Inlist Eina_Accessor_Inlist;
+
+struct _Eina_Iterator_Inlist
+{
+ Eina_Iterator iterator;
+ const Eina_Inlist *head;
+ const Eina_Inlist *current;
+};
+
+struct _Eina_Accessor_Inlist
+{
+ Eina_Accessor accessor;
+
+ const Eina_Inlist *head;
+ const Eina_Inlist *current;
+
+ unsigned int index;
+};
+
+static Eina_Bool
+eina_inlist_iterator_next(Eina_Iterator_Inlist *it, void **data) {
+ if (it->current == NULL) return EINA_FALSE;
+ if (data) *data = (void*) it->current;
+
+ it->current = it->current->next;
+
+ return EINA_TRUE;
+}
+
+static Eina_Inlist *
+eina_inlist_iterator_get_container(Eina_Iterator_Inlist *it) {
+ return (Eina_Inlist*) it->head;
+}
+
+static void
+eina_inlist_iterator_free(Eina_Iterator_Inlist *it) {
+ free(it);
+}
+
+static Eina_Bool
+eina_inlist_accessor_get_at(Eina_Accessor_Inlist *it, unsigned int index, void
**data) {
+ const Eina_Inlist *over;
+ unsigned int middle;
+ unsigned int i;
+
+ if (it->index == index) {
+ over = it->current;
+ } else if (index > it->index) {
+ /* Looking after current. */
+ for (i = it->index, over = it->current;
+ i < index && over != NULL;
+ ++i, over = over->next)
+ ;
+
+ if (over == NULL) return EINA_FALSE;
+ } else {
+ middle = it->index >> 1;
+
+ if (index > middle) {
+ /* Looking backward from current. */
+ for (i = it->index, over = it->current;
+ i > index && over != NULL;
+ --i, over = over->prev)
+ ;
+
+ if (over == NULL) return EINA_FALSE;
+ } else {
+ /* Looking from the start. */
+ for (i = 0, over = it->head;
+ i < index && over != NULL;
+ ++i, over = over->next)
+ ;
+
+ if (over == NULL) return EINA_FALSE;
+ }
+ }
+
+ it->current = over;
+ it->index = index;
+
+ if (data) *data = (void*) over;
+ return EINA_TRUE;
+}
+
+static Eina_Inlist *
+eina_inlist_accessor_get_container(Eina_Accessor_Inlist *it) {
+ return (Eina_Inlist *) it->head;
+}
+
+static void
+eina_inlist_accessor_free(Eina_Accessor_Inlist *it) {
+ free(it);
+}
+
+/*============================================================================*
+ * Global *
+
*============================================================================*/
+/*============================================================================*
+ * API *
*============================================================================*/
/**
* To be documented
@@ -175,4 +276,49 @@
return item;
}
return NULL;
+}
+
+EAPI Eina_Iterator *eina_inlist_iterator_new(const void *in_list) {
+ Eina_Iterator_Inlist *it;
+
+ if (!in_list) return NULL;
+
+ eina_error_set(0);
+ it = calloc(1, sizeof (Eina_Iterator_Inlist));
+ if (!it) {
+ eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
+ return NULL;
+ }
+
+ it->head = in_list;
+ it->current = in_list;
+
+ it->iterator.next = FUNC_ITERATOR_NEXT(eina_inlist_iterator_next);
+ it->iterator.get_container =
FUNC_ITERATOR_GET_CONTAINER(eina_inlist_iterator_get_container);
+ it->iterator.free = FUNC_ITERATOR_FREE(eina_inlist_iterator_free);
+
+ return &it->iterator;
+}
+
+EAPI Eina_Accessor *eina_inlist_accessor_new(const void *in_list) {
+ Eina_Accessor_Inlist *it;
+
+ if (!in_list) return NULL;
+
+ eina_error_set(0);
+ it = calloc(1, sizeof (Eina_Accessor_Inlist));
+ if (!it) {
+ eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
+ return NULL;
+ }
+
+ it->head = in_list;
+ it->current = in_list;
+ it->index = 0;
+
+ it->accessor.get_at = FUNC_ACCESSOR_GET_AT(eina_inlist_accessor_get_at);
+ it->accessor.get_container =
FUNC_ACCESSOR_GET_CONTAINER(eina_inlist_accessor_get_container);
+ it->accessor.free = FUNC_ACCESSOR_FREE(eina_inlist_accessor_free);
+
+ return &it->accessor;
}
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