arrays

src/ci2_array.c

@@ -0,0 +1,111 @@
+/* - | Copyright | ------------------------------------------------------------
+   Copyright (c) 2026 Randy Jordan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+ * --------------------------------------------------------------------------*/
+#include "../include/platform/dsa/ci2_array.h"
+#include <stddef.h>
+#include <stdlib.h>
+
+void
+ci2_array_init(CI2_Array* v, int i)
+{
+  v->cap = i;
+  v->len = 0;
+  v->items = malloc(sizeof(void*) * v->cap);
+}
+
+int
+ci2_array_len(CI2_Array* v)
+{
+  return v->len;
+}
+
+static void
+ci2_array_resize(CI2_Array* v, int cap)
+{
+#ifdef DEBUG_ON
+  printf("ci2_array_resize: %d to %d\n", v->cap, cap);
+#endif
+  void** items = realloc(v->items, sizeof(void*) * cap);
+
+  if (items) {
+    v->items = items;
+    v->cap = cap;
+  }
+}
+
+void
+ci2_array_add(CI2_Array* v, void* item)
+{
+  if (v->cap == v->len)
+    ci2_array_resize(v, v->cap * 2);
+
+  v->items[v->len++] = item;
+}
+
+void
+ci2_array_set(CI2_Array* v, int index, void* item)
+{
+  if (index >= 0 && index < v->len)
+    v->items[index] = item;
+}
+
+void*
+ci2_array_get(CI2_Array* v, int index)
+{
+  if (index >= 0 && index < v->len)
+    return v->items[index];
+
+  return NULL;
+}
+
+void
+ci2_array_delete(struct CI2_Array* v, int index)
+{
+
+  if (index < 0 || index >= v->len)
+
+    return;
+
+  v->items[index] = NULL;
+
+  int i;
+
+  for (i = index; i < v->len - 1; i++) {
+
+    v->items[i] = v->items[i + 1];
+  }
+
+  v->items[i] = NULL;
+
+  v->len--;
+
+  if (v->len > 0 && v->len == v->cap / 4)
+
+    ci2_array_resize(v, v->cap / 2);
+}
+
+void
+ci2_array_free(struct CI2_Array* v)
+{
+
+  free(v->items);
+}