Tkrzw
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Complessor implemeted with LZMA. More...
#include <tkrzw_compress.h>
Public Types | |
enum | MetadataMode : int32_t { METADATA_NONE = 0 , METADATA_CRC32 = 2 , METADATA_SHA256 = 1 } |
Enumeration for metadata modes. More... | |
Public Member Functions | |
LZMACompressor (int32_t level=6, MetadataMode metadata_mode=METADATA_NONE) | |
Constructor. | |
virtual | ~LZMACompressor () |
Destructor. | |
bool | IsSupported () const override |
Checks whether the implementation is actually supported. | |
char * | Compress (const void *buf, size_t size, size_t *sp) override |
Compresses a serial data. | |
char * | Decompress (const void *buf, size_t size, size_t *sp) override |
Decompresses a serial data. | |
std::unique_ptr< Compressor > | MakeCompressor () const override |
Makes a new Compressor object of the same concrete class. | |
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virtual | ~Compressor ()=default |
Destructor. | |
virtual bool | IsSupported () const =0 |
Checks whether the implementation is actually supported. | |
virtual char * | Compress (const void *buf, size_t size, size_t *sp)=0 |
Compresses a serial data. | |
virtual char * | Decompress (const void *buf, size_t size, size_t *sp)=0 |
Decompresses a serial data. | |
virtual std::unique_ptr< Compressor > | MakeCompressor () const =0 |
Makes a new Compressor object of the same concrete class. | |
const std::type_info & | GetType () const |
Gets the type information of the actual class. | |
Complessor implemeted with LZMA.
enum tkrzw::LZMACompressor::MetadataMode : int32_t |
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explicit |
Constructor.
level | The compression level between 0 and 9. Higher means slower but better compression. 0 means no compression. |
metadata_mode | The mode for the metadata added to the result. |
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virtual |
Destructor.
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overridevirtual |
Checks whether the implementation is actually supported.
Implements tkrzw::Compressor.
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overridevirtual |
Compresses a serial data.
buf | the input buffer. |
size | the size of the input buffer. |
sp | the pointer to the variable into which the size of the region of the return value is assigned. |
Because the region of the return value is allocated with the xmalloc function, it should be released with the xfree function.
Implements tkrzw::Compressor.
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overridevirtual |
Decompresses a serial data.
buf | the input buffer. |
size | the size of the input buffer. |
sp | the pointer to the variable into which the size of the region of the return value is assigned. |
Because the region of the return value is allocated with the xmalloc function, it should be released with the xfree function.
Implements tkrzw::Compressor.
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overridevirtual |
Makes a new Compressor object of the same concrete class.
Implements tkrzw::Compressor.