sync with upstream

1 files changed, 84 insertions, 0 deletions

diff --git a/xbmc/utils/auto_buffer.cpp b/xbmc/utils/auto_buffer.cpp
new file mode 100644
index 0000000..e88a960
--- /dev/null
+++ b/xbmc/utils/auto_buffer.cpp
@@ -0,0 +1,84 @@
+/*
+ *  Copyright (C) 2013-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "auto_buffer.h"
+
+#include <new> // for std::bad_alloc
+#include <stdlib.h> // for malloc(), realloc() and free()
+
+using namespace XUTILS;
+
+auto_buffer::auto_buffer(size_t size)
+{
+  if (!size)
+    return;
+
+  p = malloc(size); // "malloc()" instead of "new" allow to use "realloc()"
+  if (!p)
+    throw std::bad_alloc();
+  s = size;
+}
+
+auto_buffer::~auto_buffer()
+{
+  free(p);
+}
+
+auto_buffer& auto_buffer::allocate(size_t size)
+{
+  clear();
+  if (size)
+  {
+    p = malloc(size);
+    if (!p)
+      throw std::bad_alloc();
+    s = size;
+  }
+  return *this;
+}
+
+auto_buffer& auto_buffer::resize(size_t newSize)
+{
+  if (!newSize)
+    return clear();
+
+  void* newPtr = realloc(p, newSize);
+  if (!newPtr)
+    throw std::bad_alloc();
+  p = newPtr;
+  s = newSize;
+  return *this;
+}
+
+auto_buffer& auto_buffer::clear(void)
+{
+  free(p);
+  p = 0;
+  s = 0;
+  return *this;
+}
+
+auto_buffer& auto_buffer::attach(void* pointer, size_t size)
+{
+  clear();
+  if ((pointer && size) || (!pointer && !size))
+  {
+    p = pointer;
+    s = size;
+  }
+  return *this;
+}
+
+void* auto_buffer::detach(void)
+{
+  void* returnPtr = p;
+  p = 0;
+  s = 0;
+  return returnPtr;
+}
+