1 files changed, 73 insertions, 0 deletions
diff --git a/src/pulsecore/dynarray.h b/src/pulsecore/dynarray.h
new file mode 100644
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+++ b/src/pulsecore/dynarray.h
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+#ifndef foopulsecoredynarrayhfoo
+#define foopulsecoredynarrayhfoo
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2008 Lennart Poettering
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation; either version 2.1 of the
+  License, or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <pulse/def.h>
+
+typedef struct pa_dynarray pa_dynarray;
+
+/* Implementation of a simple dynamically sized array for storing pointers.
+ *
+ * When the array is created, a free callback can be provided, which will be
+ * then used when removing items from the array and when freeing the array. If
+ * the free callback is not provided, the memory management of the stored items
+ * is the responsibility of the array user. If there is need to remove items
+ * from the array without freeing them, while also having the free callback
+ * set, the functions with "steal" in their name can be used.
+ *
+ * Removing items from the middle of the array causes the last item to be
+ * moved to the place of the removed item. That is, array ordering is not
+ * preserved.
+ *
+ * The array doesn't support storing NULL pointers. */
+
+pa_dynarray* pa_dynarray_new(pa_free_cb_t free_cb);
+void pa_dynarray_free(pa_dynarray *array);
+
+void pa_dynarray_append(pa_dynarray *array, void *p);
+
+/* Returns the element at index i, or NULL if i is out of bounds. */
+void *pa_dynarray_get(pa_dynarray *array, unsigned i);
+
+/* Returns the last element, or NULL if the array is empty. */
+void *pa_dynarray_last(pa_dynarray *array);
+
+/* Returns -PA_ERR_NOENTITY if i is out of bounds, and zero otherwise. */
+int pa_dynarray_remove_by_index(pa_dynarray *array, unsigned i);
+
+/* Returns -PA_ERR_NOENTITY if p is not found in the array, and zero
+ * otherwise. If the array contains multiple occurrences of p, only one of
+ * them is removed (and it's unspecified which one). */
+int pa_dynarray_remove_by_data(pa_dynarray *array, void *p);
+
+/* Returns the removed item, or NULL if the array is empty. */
+void *pa_dynarray_steal_last(pa_dynarray *array);
+
+unsigned pa_dynarray_size(pa_dynarray *array);
+
+/* Returns -PA_ERR_NOENTITY if i is out of bounds, and zero otherwise.
+ * Here i is the location index in the array like 0, ..., array->entries */
+int pa_dynarray_insert_by_index(pa_dynarray *array, void *p, unsigned i);
+
+#define PA_DYNARRAY_FOREACH(elem, array, idx) \
+    for ((idx) = 0; ((elem) = pa_dynarray_get(array, idx)); (idx)++)
+
+#endif