1 files changed, 45 insertions, 0 deletions
diff --git a/netwerk/cache/nsCacheMetaData.h b/netwerk/cache/nsCacheMetaData.h
new file mode 100644
index 0000000000..4cf84ad5fa
--- /dev/null
+++ b/netwerk/cache/nsCacheMetaData.h
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef _nsCacheMetaData_h_
+#define _nsCacheMetaData_h_
+
+#include "nspr.h"
+#include "nscore.h"
+
+class nsICacheMetaDataVisitor;
+
+class nsCacheMetaData {
+ public:
+  nsCacheMetaData() : mBuffer(nullptr), mBufferSize(0), mMetaSize(0) {}
+
+  ~nsCacheMetaData() {
+    mBufferSize = mMetaSize = 0;
+    free(mBuffer);
+    mBuffer = nullptr;
+  }
+
+  const char* GetElement(const char* key);
+
+  nsresult SetElement(const char* key, const char* value);
+
+  uint32_t Size(void) { return mMetaSize; }
+
+  nsresult FlattenMetaData(char* buffer, uint32_t bufSize);
+
+  nsresult UnflattenMetaData(const char* buffer, uint32_t bufSize);
+
+  nsresult VisitElements(nsICacheMetaDataVisitor* visitor);
+
+ private:
+  nsresult EnsureBuffer(uint32_t size);
+
+  char* mBuffer;
+  uint32_t mBufferSize;
+  uint32_t mMetaSize;
+};
+
+#endif  // _nsCacheMetaData_h