[31] | 1 | /**
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| 2 | *
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| 3 | * Distributed under the UTC Heudiascy Pacpus License, Version 1.0.
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| 4 | * Copyright (c) UTC Heudiasyc 2010 - 2013. All rights reserved.
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| 5 | *
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| 6 | * See the LICENSE file for more information or a copy at:
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| 7 | * http://www.hds.utc.fr/~kurdejma/LICENSE_1_0.txt
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| 8 | *
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| 9 | */
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[3] | 10 |
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[31] | 11 | #ifndef DEF_PACPUS_DBITEFILE_H
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| 12 | #define DEF_PACPUS_DBITEFILE_H
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[3] | 13 |
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[59] | 14 | #include <Pacpus/kernel/cstdint.h>
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| 15 | #include <Pacpus/kernel/FileLibConfig.h>
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| 16 | #include <Pacpus/kernel/hdfile_header_t.h>
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| 17 | #include <Pacpus/kernel/road_time.h>
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| 18 |
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[3] | 19 | #include <fstream>
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| 20 | #include <iosfwd>
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| 21 | #include <string>
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| 22 |
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| 23 | namespace pacpus {
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| 24 |
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[61] | 25 | /// @todo Documentation
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[59] | 26 | struct FILELIB_API VariableDataSizeTag {};
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| 27 | FILELIB_API extern VariableDataSizeTag VariableDataSize;
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[3] | 28 |
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[61] | 29 | /// @todo Documentation
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[59] | 30 | struct FILELIB_API ReadModeTag {};
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| 31 | FILELIB_API extern ReadModeTag ReadMode;
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[3] | 32 |
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[61] | 33 | /// @todo Documentation
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[59] | 34 | struct FILELIB_API WriteModeTag {};
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| 35 | FILELIB_API extern WriteModeTag WriteMode;
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[3] | 36 |
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[61] | 37 | /// @todo Documentation
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[59] | 38 | struct FILELIB_API DiagnoseModeTag {};
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| 39 | FILELIB_API extern DiagnoseModeTag DiagnoseMode;
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[3] | 40 |
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[61] | 41 | /// @todo Documentation
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[59] | 42 | class FILELIB_API DbiteFile
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[3] | 43 | {
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| 44 | public:
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[59] | 45 | /// @todo Documentation
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[3] | 46 | enum ReadDirection
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| 47 | {
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| 48 | ReadForward
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| 49 | , ReadBackward
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| 50 | };
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| 51 |
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| 52 | /// @throws nothing
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| 53 | DbiteFile();
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| 54 | /// @throws nothing
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| 55 | ~DbiteFile();
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| 56 |
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| 57 | /// Opens the file in read mode.
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| 58 | ///
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| 59 | /// @throws DbiteException on I/O error (read: cannot open the file)
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| 60 | /// @throws DbiteException on invalid file signature
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| 61 | void open(const std::string & path, ReadModeTag);
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| 62 |
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| 63 | /// Opens the file in write mode using default settings.
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| 64 | /// It is necessary to set data type and data size afterwards.
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| 65 | ///
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| 66 | /// @throws DbiteException on I/O error (write: cannot write the header)
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| 67 | /// @see setRecordSize
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| 68 | /// @see setType
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| 69 | void open(const std::string & path, WriteModeTag);
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| 70 |
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| 71 | /// Opens the file in write mode using given data type and data size.
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| 72 | ///
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| 73 | /// @code
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| 74 | /// DbiteFile dbt;
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| 75 | /// dbt.open(path, WriteMode, type, dataSize);
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| 76 | /// @endcode
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| 77 | /// is equivalent to
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| 78 | /// @code
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| 79 | /// DbiteFile dbt;
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| 80 | /// dbt.open(path, WriteMode)
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| 81 | /// dbt.setRecordSize(dataSize);
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| 82 | /// dbt.setType(type);
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| 83 | /// @endcode
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| 84 | ///
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| 85 | /// @throws DbiteException on I/O error (write: cannot write the header)
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| 86 | void open(const std::string & path, WriteModeTag, hdfile_header_t::DataTypeT type, hdfile_header_t::DataSizeT dataSize);
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| 87 |
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| 88 | /// Opens the file in write mode using given data type and variable data size.
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| 89 | ///
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| 90 | /// @code
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| 91 | /// DbiteFile dbt;
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| 92 | /// dbt.open(path, WriteMode, type, VariableDataSize);
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| 93 | /// @endcode
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| 94 | /// is equivalent to
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| 95 | /// @code
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| 96 | /// DbiteFile dbt;
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| 97 | /// dbt.open(path, WriteMode)
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| 98 | /// dbt.setRecordSize(VariableDataSize);
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| 99 | /// dbt.setType(type);
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| 100 | /// @endcode
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| 101 | ///
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| 102 | /// @throws DbiteException on I/O error (write: cannot write the header)
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| 103 | void open(const std::string & path, WriteModeTag, hdfile_header_t::DataTypeT type, VariableDataSizeTag);
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| 104 |
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| 105 | /// Tries to diagnose and repair the file.
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| 106 | /// @throws DbiteException on I/O error (write: cannot write the header)
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| 107 | //void open(const std::string & path, DiagnoseModeTag); // TODO
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| 108 |
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| 109 | /// @throws nothing
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| 110 | void close();
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| 111 | /// @throws nothing
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| 112 | bool isOpen() const;
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| 113 |
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| 114 | /// @throws DbiteException when file is not open
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| 115 | void goToFileBegin();
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| 116 | /// @throws DbiteException when file is not open
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| 117 | void goToFileEnd();
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| 118 | /// @throws DbiteException when file is not open
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| 119 | void goToDataBegin();
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| 120 |
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| 121 | /// @throws nothing
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| 122 | const std::string & getPath() const;
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| 123 | /// @throws nothing
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| 124 | std::string getSignature() const;
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| 125 | /// @throws nothing
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| 126 | hdfile_header_t::DataTypeT getType() const;
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| 127 | /// @throws nothing
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| 128 | hdfile_header_t::VersionT getVersion() const;
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| 129 | /// @throws nothing
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| 130 | hdfile_header_t::DataOffsetT getDataOffset() const;
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| 131 | /// @throws nothing
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| 132 | hdfile_header_t::DataSizeT getRecordSize() const;
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| 133 | // FIXME: file size should be 64-bit long, have to change the hdfile_header_t structure as well
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| 134 | /// @throws nothing
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| 135 | hdfile_header_t::FileSizeT getFileSize() const;
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| 136 | int64_t getRealFileSize();
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| 137 | /// @throws nothing
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| 138 | road_time_t getTimeMin() const;
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| 139 | /// @throws nothing
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| 140 | road_time_t getTimeMax() const;
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| 141 | /// @throws nothing
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| 142 | hdfile_header_t::RecordCountT getRecordCount() const;
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| 143 |
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| 144 | /// @throws nothing
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| 145 | void setType(hdfile_header_t::DataTypeT type);
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| 146 | /// @throws nothing
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| 147 | void setRecordSize(hdfile_header_t::DataSizeT recordSize);
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| 148 | /// @throws nothing
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| 149 | void setRecordSize(VariableDataSizeTag tag);
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| 150 | /// @throws nothing
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| 151 | void setTimeMin(road_time_t time);
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| 152 | /// @throws nothing
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| 153 | void setTimeMax(road_time_t time);
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| 154 | /// @throws nothing
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| 155 | void setRecordCount(hdfile_header_t::RecordCountT recourdCount);
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| 156 |
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| 157 | /// prints header
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| 158 | /// @throws nothing
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| 159 | operator std::string();
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| 160 |
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| 161 | /// @throws nothing
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| 162 | bool isVariableDataSize() const;
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| 163 |
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| 164 | /// @throws DbiteException on I/O error
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| 165 | bool readRecord(size_t recordIndex, road_time_t & time, road_timerange_t & timeRange, char * data);
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| 166 | /// @throws DbiteException on I/O error
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| 167 | bool readRecord(size_t recordIndex, road_time_t & time, road_timerange_t & timeRange, char * data, size_t & dataSize);
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| 168 | /// @throws DbiteException on I/O error
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| 169 | bool readRecord(road_time_t & time, road_timerange_t & timeRange, char * data, const ReadDirection & direction = ReadForward);
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| 170 | /// @throws DbiteException on I/O error
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| 171 | bool readRecord(road_time_t & time, road_timerange_t & timeRange, char * data, size_t & dataSize, const ReadDirection & direction = ReadForward);
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| 172 | /// Reads only time and time range and moves the file position to the beginning of the next record
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| 173 | /// @throws DbiteException on I/O error
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| 174 | bool readRecord(road_time_t & time, road_timerange_t & timeRange, const ReadDirection & direction = ReadForward);
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| 175 | /// @throws DbiteException on I/O error
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| 176 | bool writeRecord(const road_time_t & time, const road_timerange_t & timeRange, const char * data, const size_t dataSize);
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| 177 | /// @throws DbiteException on I/O error
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| 178 | template <typename T>
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| 179 | bool writeRecord(const road_time_t & time, const road_timerange_t & timeRange, const T* data);
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| 180 |
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| 181 | /// @throws nothing
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| 182 | bool isEndOfFile();
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| 183 |
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| 184 | private:
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| 185 | /// @throws nothing
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| 186 | void setPath(const std::string & path);
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| 187 | /// @throws nothing
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| 188 | void setVersion(hdfile_header_t::VersionT version);
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| 189 | /// @throws nothing
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| 190 | void setDataOffset(hdfile_header_t::DataOffsetT dataOffset);
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| 191 | /// @throws nothing
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| 192 | void setFileSize(hdfile_header_t::FileSizeT fileSize);
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| 193 |
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| 194 | void initializeHeader();
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| 195 |
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| 196 | bool isSignatureCorrect() const;
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| 197 | void setSignature();
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| 198 |
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| 199 | const hdfile_header_t & getHeader() const;
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| 200 | hdfile_header_t & header();
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| 201 | void writeHeader();
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| 202 |
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| 203 | void openWriteMode(const std::string & path);
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| 204 | void openWriteMode(const std::string & path, hdfile_header_t::DataTypeT type);
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| 205 | void closeDbite();
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| 206 | void closeDbite(ReadModeTag);
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| 207 | void closeDbite(WriteModeTag);
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| 208 | void readHeader();
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| 209 | void verifyHeader();
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| 210 |
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| 211 | /// @throws DbiteException when file is not open
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| 212 | int64_t getReadPosition();
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| 213 | /// @throws DbiteException when file is not open
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| 214 | int64_t getWritePosition();
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| 215 | /// @throws DbiteException when file is not open
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| 216 | void setReadPosition(int64_t offset, std::ios_base::seekdir direction);
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| 217 | /// @throws DbiteException when file is not open
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| 218 | void setReadPosition(int64_t position);
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| 219 | /// @throws DbiteException when file is not open
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| 220 | void setWritePosition(int64_t offset, std::ios_base::seekdir direction);
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| 221 | /// @throws DbiteException when file is not open
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| 222 | void setWritePosition(int64_t position);
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| 223 |
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| 224 | /// @throws DbiteException on I/O error
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| 225 | bool readRecordNoBufferCheck(road_time_t & time, road_timerange_t & timeRange, char * data, size_t & dataSize, const ReadDirection & direction);
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| 226 | /// @throws DbiteException on I/O error
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| 227 | bool readRecordForward(road_time_t & time, road_timerange_t & timeRange, char * data, size_t & dataSize);
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| 228 | /// @throws DbiteException on I/O error
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| 229 | bool readRecordBackward(road_time_t & time, road_timerange_t & timeRange, char * data, size_t & dataSize);
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| 230 |
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| 231 | /// @throws DbiteException on I/O error
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| 232 | void read(std::fstream::char_type * s, std::streamsize n);
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| 233 | /// @throws DbiteException on I/O error
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| 234 | void write(const std::fstream::char_type * s, std::streamsize n);
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| 235 |
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| 236 | /// @throws DbiteException when file is not open
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| 237 | void checkFileOpen();
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| 238 |
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| 239 | private:
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| 240 | std::fstream mFile;
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| 241 | hdfile_header_t mHeader;
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| 242 | bool mIsWriting;
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| 243 | std::string mPath;
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| 244 |
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| 245 | bool mIsVariableRecordSize;
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| 246 | };
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| 247 |
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| 248 | template <typename T>
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| 249 | bool DbiteFile::writeRecord(const road_time_t & time, const road_timerange_t & timeRange, const T* data)
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| 250 | {
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| 251 | return writeRecord(time, timeRange, (const char*) data, sizeof(T));
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| 252 | }
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| 253 |
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| 254 | } // namespace pacpus
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| 255 |
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[31] | 256 | #endif // DEF_PACPUS_DBITEFILE_H
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