Class used to download a GridFS file.
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#include <downloader.hpp>
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| downloader () noexcept |
| Default constructs a downloader object.
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| downloader (downloader &&) noexcept |
| Move constructs a downloader.
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downloader & | operator= (downloader &&) noexcept |
| Move assigns a downloader.
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| ~downloader () |
| Destroys a downloader.
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| operator bool () const noexcept |
| Returns true if the downloader is valid, meaning it was not default constructed or moved from.
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std::size_t | read (std::uint8_t *buffer, std::size_t length) |
| Reads a specified number of bytes from the GridFS file being downloaded.
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void | close () |
| Closes the downloader stream.
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std::int32_t | chunk_size () const |
| Gets the chunk size of the file being downloaded.
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std::int64_t | file_length () const |
| Gets the length of the file being downloaded.
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bsoncxx::v_noabi::document::view | files_document () const |
| Gets the files collection document of the file being downloaded.
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Class used to download a GridFS file.
◆ downloader()
mongocxx::v_noabi::gridfs::downloader::downloader |
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noexcept |
Default constructs a downloader object.
The downloader is equivalent to the state of a moved from downloader. The only valid actions to take with a default constructed downloader are to assign to it, or destroy it.
◆ chunk_size()
std::int32_t mongocxx::v_noabi::gridfs::downloader::chunk_size |
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const |
Gets the chunk size of the file being downloaded.
- Returns
- The chunk size in bytes.
◆ close()
void mongocxx::v_noabi::gridfs::downloader::close |
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Closes the downloader stream.
- Exceptions
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◆ file_length()
std::int64_t mongocxx::v_noabi::gridfs::downloader::file_length |
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const |
Gets the length of the file being downloaded.
- Returns
- The length in bytes.
◆ files_document()
Gets the files collection document of the file being downloaded.
- Returns
- A view to the files collection document of the file being downloaded.
◆ read()
std::size_t mongocxx::v_noabi::gridfs::downloader::read |
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std::uint8_t * |
buffer, |
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std::size_t |
length |
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Reads a specified number of bytes from the GridFS file being downloaded.
- Parameters
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buffer | A pointer to a buffer to store the bytes read from the file. |
length | The number of bytes to read from the file. |
- Returns
- The number of bytes actually read. If zero, the downloader has reached the end of the file.
- Exceptions
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The documentation for this class was generated from the following file: