text: // Copyright 2008, Google Inc. All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are met:
  //
  //  1. Redistributions of source code must retain the above copyright notice,
  //     this list of conditions and the following disclaimer.
  //  2. Redistributions in binary form must reproduce the above copyright notice,
  //     this list of conditions and the following disclaimer in the documentation
  //     and/or other materials provided with the distribution.
  //  3. Neither the name of Google Inc. nor the names of its contributors may be
  //     used to endorse or promote products derived from this software without
  //     specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
  // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  #ifndef KML_BASE_MEMORY_FILE_H__
  #define KML_BASE_MEMORY_FILE_H__
  
  #include "kml/base/referent.h"
  #include "kml/base/util.h"
  
  namespace kmlbase {
  
  // This NetCache CacheItem is a utility class used to represent file contents
  // cached in memory.  The intended usage is as follows:
  //   NetCache<YourNetFetcher, MemoryFile> memory_file_net_cache;
  //   MemoryFile memory_file = memory_file_net_cache.Fetch(url);
  //   const string& file_content = memory_file.get_content();
  class MemoryFile : public Referent {
   public:
     static MemoryFile* CreateFromString(const string& data) {
       return new MemoryFile(data);
     }
  
     const string& get_content() const {
       return content_;
     }
  
   private:
    MemoryFile(const string& content) : content_(content) {}
    string content_;
  };
  
  typedef std::shared_ptr<MemoryFile> MemoryFilePtr;
  
  }  // end namespace kmlbase
  
  #endif  // KML_BASE_MEMORY_FILE_H__
  