mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 13:42:02 +00:00
27 lines
754 B
C++
27 lines
754 B
C++
|
#pragma once
|
||
|
|
|
||
|
|
#include <DB/IO/ReadBuffer.h>
|
||
|
|
|
||
|
|
|
||
|
|
namespace DB
|
||
|
|
{
|
||
|
|
|
||
|
|
/** Allows to read from memory range.
|
||
|
|
* In comparison with just ReadBuffer, it only adds convenient constructors, that do const_cast.
|
||
|
|
* In fact, ReadBuffer will not modify data in buffer, but it requires non-const pointer.
|
||
|
|
*/
|
||
|
|
class ReadBufferFromMemory : public ReadBuffer
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
ReadBufferFromMemory(const char * buf, size_t size)
|
||
|
|
: ReadBuffer(const_cast<char *>(buf), size, 0) {}
|
||
|
|
|
||
|
|
ReadBufferFromMemory(const unsigned char * buf, size_t size)
|
||
|
|
: ReadBuffer(const_cast<char *>(reinterpret_cast<const char *>(buf)), size, 0) {}
|
||
|
|
|
||
|
|
ReadBufferFromMemory(const signed char * buf, size_t size)
|
||
|
|
: ReadBuffer(const_cast<char *>(reinterpret_cast<const char *>(buf)), size, 0) {}
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|