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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef STORAGE_COMMON_BLOB_BLOB_DATA_H_
      6 #define STORAGE_COMMON_BLOB_BLOB_DATA_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/basictypes.h"
     12 #include "base/files/file_path.h"
     13 #include "base/memory/ref_counted.h"
     14 #include "base/time/time.h"
     15 #include "storage/common/blob/shareable_file_reference.h"
     16 #include "storage/common/data_element.h"
     17 #include "storage/common/storage_common_export.h"
     18 #include "url/gurl.h"
     19 
     20 namespace storage {
     21 
     22 class STORAGE_COMMON_EXPORT BlobData
     23     : public base::RefCounted<BlobData> {
     24  public:
     25   typedef storage::DataElement Item;
     26 
     27   // TODO(michaeln): remove the empty ctor when we fully transition to uuids.
     28   BlobData();
     29   explicit BlobData(const std::string& uuid);
     30 
     31   void AppendData(const std::string& data) {
     32     AppendData(data.c_str(), data.size());
     33   }
     34 
     35   void AppendData(const char* data, size_t length);
     36 
     37   void AppendFile(const base::FilePath& file_path, uint64 offset, uint64 length,
     38                   const base::Time& expected_modification_time);
     39   void AppendBlob(const std::string& uuid, uint64 offset, uint64 length);
     40   void AppendFileSystemFile(const GURL& url, uint64 offset, uint64 length,
     41                             const base::Time& expected_modification_time);
     42 
     43   void AttachShareableFileReference(ShareableFileReference* reference) {
     44     shareable_files_.push_back(reference);
     45   }
     46 
     47   const std::string& uuid() const { return uuid_; }
     48   const std::vector<Item>& items() const { return items_; }
     49   const std::string& content_type() const { return content_type_; }
     50   void set_content_type(const std::string& content_type) {
     51     content_type_ = content_type;
     52   }
     53 
     54   const std::string& content_disposition() const {
     55     return content_disposition_;
     56   }
     57   void set_content_disposition(const std::string& content_disposition) {
     58     content_disposition_ = content_disposition;
     59   }
     60 
     61   int64 GetMemoryUsage() const;
     62 
     63  private:
     64   friend class base::RefCounted<BlobData>;
     65   virtual ~BlobData();
     66 
     67   std::string uuid_;
     68   std::string content_type_;
     69   std::string content_disposition_;
     70   std::vector<Item> items_;
     71   std::vector<scoped_refptr<ShareableFileReference> > shareable_files_;
     72 
     73   DISALLOW_COPY_AND_ASSIGN(BlobData);
     74 };
     75 
     76 #if defined(UNIT_TEST)
     77 inline bool operator==(const BlobData& a, const BlobData& b) {
     78   if (a.content_type() != b.content_type())
     79     return false;
     80   if (a.content_disposition() != b.content_disposition())
     81     return false;
     82   if (a.items().size() != b.items().size())
     83     return false;
     84   for (size_t i = 0; i < a.items().size(); ++i) {
     85     if (a.items()[i] != b.items()[i])
     86       return false;
     87   }
     88   return true;
     89 }
     90 
     91 inline bool operator!=(const BlobData& a, const BlobData& b) {
     92   return !(a == b);
     93 }
     94 #endif  // defined(UNIT_TEST)
     95 
     96 }  // namespace storage
     97 
     98 #endif  // STORAGE_COMMON_BLOB_BLOB_DATA_H_
     99