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File indexing completed on 2025-01-30 10:11:37
0001 // This may look like C code, but it is really -*- C++ -*- 0002 // 0003 // Copyright Bob Friesenhahn, 1999, 2000, 2001, 2002 0004 // 0005 // Copyright @ 2015 ImageMagick Studio LLC, a non-profit organization 0006 // dedicated to making software imaging solutions freely available. 0007 // 0008 // Reference counted container class for Binary Large Objects (BLOBs) 0009 // 0010 0011 #if !defined(Magick_BlobRef_header) 0012 #define Magick_BlobRef_header 0013 0014 #include "Magick++/Include.h" 0015 #include <string> 0016 0017 namespace Magick 0018 { 0019 // Forward decl 0020 class BlobRef; 0021 0022 class MagickPPExport Blob 0023 { 0024 public: 0025 0026 enum Allocator 0027 { 0028 MallocAllocator, 0029 NewAllocator 0030 }; 0031 0032 // Default constructor 0033 Blob(void); 0034 0035 // Construct object with data, making a copy of the supplied data. 0036 Blob(const void* data_,const size_t length_); 0037 0038 // Copy constructor (reference counted) 0039 Blob(const Blob& blob_); 0040 0041 // Destructor (reference counted) 0042 virtual ~Blob(); 0043 0044 // Assignment operator (reference counted) 0045 Blob& operator=(const Blob& blob_); 0046 0047 // Update object contents from Base64-encoded string representation. 0048 void base64(const std::string base64_); 0049 // Return Base64-encoded string representation. 0050 std::string base64(void) const; 0051 0052 // Obtain pointer to data. The user should never try to modify or 0053 // free this data since the Blob class manages its own data. The 0054 // user must be finished with the data before allowing the Blob to 0055 // be destroyed since the pointer is invalid once the Blob is 0056 // destroyed. 0057 const void* data(void) const; 0058 0059 // Obtain data length. 0060 size_t length(void) const; 0061 0062 // Update object contents, making a copy of the supplied data. 0063 // Any existing data in the object is deallocated. 0064 void update(const void* data_,const size_t length_); 0065 0066 // Update object contents, using supplied pointer directly (no 0067 // copy). Any existing data in the object is deallocated. The user 0068 // must ensure that the pointer supplied is not deleted or 0069 // otherwise modified after it has been supplied to this method. 0070 // Specify allocator_ as "MallocAllocator" if memory is allocated 0071 // via the C language malloc() function, or "NewAllocator" if 0072 // memory is allocated via C++ 'new'. 0073 void updateNoCopy(void* data_,const size_t length_, 0074 const Allocator allocator_=NewAllocator); 0075 0076 private: 0077 BlobRef *_blobRef; 0078 }; 0079 0080 } // namespace Magick 0081 0082 #endif // Magick_BlobRef_header
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