1 files changed, 45 insertions, 0 deletions
diff --git a/netwerk/cache/nsCacheMetaData.h b/netwerk/cache/nsCacheMetaData.h
new file mode 100644
index 000000000..8ac19125a
--- /dev/null
+++ b/netwerk/cache/nsCacheMetaData.h
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * 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