Bemanitools v5.26 release

src/main/util/array.c

@@ -0,0 +1,58 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "util/array.h"
+#include "util/log.h"
+#include "util/mem.h"
+
+void array_init(struct array *array)
+{
+    memset(array, 0, sizeof(*array));
+}
+
+void array_remove_(size_t itemsz, struct array *array, size_t i)
+{
+    log_assert(i < array->nitems);
+
+    array->nitems--;
+
+    memmove(((uint8_t *) array->items) + i * itemsz,
+            ((uint8_t *) array->items) + (i + 1) * itemsz,
+            (array->nitems - i) * itemsz);
+}
+
+void *array_reserve_(size_t itemsz, struct array *array, size_t nitems)
+{
+    size_t new_nalloced;
+    size_t new_nitems;
+    void *result;
+
+    new_nitems = array->nitems + nitems;
+
+    if (new_nitems > array->nalloced) {
+        new_nalloced = array->nalloced;
+
+        if (new_nalloced == 0) {
+            new_nalloced = 1;
+        }
+
+        while (new_nalloced < new_nitems) {
+            new_nalloced *= 2;
+        }
+
+        array->items = xrealloc(array->items, new_nalloced * itemsz);
+        array->nalloced = new_nalloced;
+    }
+
+    result = ((uint8_t *) array->items) + array->nitems * itemsz;
+    array->nitems = new_nitems;
+
+    return result;
+}
+
+void array_fini(struct array *array)
+{
+    free(array->items);
+}
+