Add list module

list.c

@@ -0,0 +1,132 @@
+/******************************************************************************
+ *
+ *                Copyright (c) 2017-2019 by Löwenware Ltd
+ *             Please, refer LICENSE file for legal information
+ *
+ ******************************************************************************/
+
+/**
+ * @file list.c
+ * @author Ilja Kartašov <ik@lowenware.com>
+ * @brief cStuff list module
+ *
+ * @see https://lowenware.com/
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include "list.h"
+
+CStuffRetcode
+cstuff_list_init(CStuffList self, int size)
+{
+	if (!(self->items = calloc(size, sizeof (void *))))
+		return CSTUFF_MALLOC_ERROR;
+
+	self->length = 0;
+	self->size = size;
+
+	return CSTUFF_SUCCESS;
+}
+
+
+void
+cstuff_list_release(CStuffList self, CStuffListFree item_free)
+{
+	if (self->items) {
+		if (item_free) {
+			int i;
+			for (i = 0; i < self->length; i++) {
+				void *ptr = self->items[i];
+				if (ptr) {
+					item_free(ptr);
+				}
+			}
+		}
+		free(self->items);
+	}
+}
+
+
+int
+cstuff_list_append(CStuffList self, void *item)
+{
+	void **items;
+	int size = self->length + 1;
+
+	if (size > self->size) {
+		if (!(items = realloc(self->items, size * sizeof (void*))))
+			return -1;
+
+		self->items = items;
+		self->size = size;
+	}
+
+	self->items[self->length] = item;
+
+	return self->length++;
+}
+
+
+int
+cstuff_list_insert(CStuffList self, void *item, int index)
+{
+	int r;
+
+	if ((r = cstuff_list_append(self, item)) == -1)
+		return -1;
+
+	if (index >= r || index < 0)
+		return r;
+
+	memmove(&self->items[index + 1], &self->items[index], 
+			(self->length - index - 1) * sizeof (void*));
+
+	self->items[index] = item;
+
+	return index;
+}
+
+
+void *
+cstuff_list_remove(CStuffList self, int index)
+{
+	void *result;
+	int i;
+	if (index < self->length) {
+		result = self->items[index];
+		self->length--;
+		for (i = index; i < self->length; i++) {
+			self->items[i] = self->items[i + 1];
+		}
+	} else {
+		result = NULL;
+	}
+	return result;
+}
+
+
+void
+cstuff_list_remove_item(CStuffList self, void *item)
+{
+	int i;
+	for (i = 0; i < self->length; i++) {
+		if (self->items[i] == item) {
+			cstuff_list_remove(self, i);
+			break;
+		}
+	}
+}
+
+
+void
+cstuff_list_set_item(CStuffList self, int index, void *value)
+{
+	if (self->size > index) {
+		self->items[index] = value;
+		if (index >= self->length)
+			self->length = index + 1;
+	}
+}
+
+

list.h

@@ -0,0 +1,64 @@
+/******************************************************************************
+ *
+ *                Copyright (c) 2017-2019 by Löwenware Ltd
+ *             Please, refer LICENSE file for legal information
+ *
+ ******************************************************************************/
+
+/**
+ * @file list.h
+ * @author Ilja Kartašov <ik@lowenware.com>
+ * @brief cStuff List module header file
+ *
+ * @see https://lowenware.com/
+ */
+
+#ifndef CSTUFF_LIST_H_372E2D14_8DEE_4A7C_A5AB_8808A87DF436
+#define CSTUFF_LIST_H_372E2D14_8DEE_4A7C_A5AB_8808A87DF436
+
+#include "retcode.h"
+
+#define cstuff_list_index(LIST, IDX) (LIST->items[IDX])
+
+
+struct cstuff_list {
+	void **items;
+	int length;
+	int size;
+};
+
+typedef struct cstuff_list * CStuffList;
+
+typedef void
+(*CStuffListFree)(void *item);
+
+
+CStuffRetcode
+cstuff_list_init(CStuffList self, int size);
+
+
+void
+cstuff_list_release(CStuffList self, CStuffListFree item_free);
+
+
+int
+cstuff_list_append(CStuffList self, void *item);
+
+
+int
+cstuff_list_insert(CStuffList self, void *item, int index);
+
+
+void *
+cstuff_list_remove(CStuffList self, int index);
+
+
+void
+cstuff_list_remove_item(CStuffList self, void *item);
+
+
+void
+cstuff_list_set_item(CStuffList self, int index, void *value);
+
+
+#endif /* !LIST_H */