Framework for iterating over certificates in CT database from Chromium code. (not for review)

net/tools/ct_mapper/entry_reader.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef NET_TOOLS_CT_MAPPER_ENTRY_READER_H_
+#define NET_TOOLS_CT_MAPPER_ENTRY_READER_H_
+
+#include <memory>
+
+#include "base/files/file_path.h"
+#include "net/tools/ct_mapper/entry_reader.h"
+
+namespace net {
+
+class Entry;
+
+class EntryReader {
+ public:
+  virtual ~EntryReader() {}
+
+  // Reads up to max_entries and fills them in |entries|.
+  virtual bool Read(std::vector<Entry>* entries, size_t max_entries) = 0;
+
+  // Returns a number in the range 0-1.
+  virtual double GetProgress() const = 0;
+};
+
+std::unique_ptr<EntryReader> CreateEntryReaderForCertificateTransparencyDb(
+    const base::FilePath& path);
+
+}  // namespace net
+
+#endif  // NET_TOOLS_CT_MAPPER_ENTRY_READER_H_