chunked_file.h
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00034 
00035 #ifndef ROSBAG_CHUNKED_FILE_H
00036 #define ROSBAG_CHUNKED_FILE_H
00037 
00038 #include <ios>
00039 #include <stdint.h>
00040 #include <string>
00041 #include "macros.h"
00042 #include <boost/shared_ptr.hpp>
00043 
00044 #include <bzlib.h>
00045 
00046 #include "rosbag/stream.h"
00047 
00048 namespace rosbag {
00049 
00051 class ROSBAG_DECL ChunkedFile
00052 {
00053     friend class Stream;
00054 
00055 public:
00056     ChunkedFile();
00057     ~ChunkedFile();
00058 
00059     void openWrite    (std::string const& filename);            
00060     void openRead     (std::string const& filename);            
00061     void openReadWrite(std::string const& filename);            
00062 
00063     void close();                                               
00064 
00065     std::string getFileName()          const;                   
00066     uint64_t    getOffset()            const;                   
00067     uint32_t    getCompressedBytesIn() const;                   
00068     bool        isOpen()               const;                   
00069     bool        good()                 const;                   
00070 
00071     void        setReadMode(CompressionType type);
00072     void        setWriteMode(CompressionType type);
00073 
00074     // File I/O
00075     void        write(std::string const& s);
00076     void        write(void* ptr, size_t size);                          
00077     void        read(void* ptr, size_t size);                           
00078     std::string getline();
00079     bool        truncate(uint64_t length);
00080     void        seek(uint64_t offset, int origin = std::ios_base::beg); 
00081     void        decompress(CompressionType compression, uint8_t* dest, unsigned int dest_len, uint8_t* source, unsigned int source_len);
00082 
00083 private:
00084     void open(std::string const& filename, std::string const& mode);
00085     void clearUnused();
00086 
00087 private:
00088     std::string filename_;       
00089     FILE*       file_;           
00090     bool        writing_;        
00091     uint64_t    offset_;         
00092     uint64_t    compressed_in_;  
00093     char*       unused_;         
00094     int         nUnused_;        
00095 
00096     boost::shared_ptr<StreamFactory> stream_factory_;
00097 
00098     boost::shared_ptr<Stream> read_stream_;
00099     boost::shared_ptr<Stream> write_stream_;
00100 };
00101 
00102 } // namespace rosbag
00103 
00104 #endif


rosbag_storage
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autogenerated on Fri Aug 28 2015 12:33:40