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28 lines
812 B
C++
28 lines
812 B
C++
#pragma once
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#include "SeekableReadBuffer.h"
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namespace DB
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{
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/** Allows to read from memory range.
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* In comparison with just ReadBuffer, it only adds convenient constructors, that do const_cast.
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* In fact, ReadBuffer will not modify data in buffer, but it requires non-const pointer.
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*/
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class ReadBufferFromMemory : public SeekableReadBuffer
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{
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public:
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template <typename CharT>
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requires (sizeof(CharT) == 1)
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ReadBufferFromMemory(const CharT * buf, size_t size)
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: SeekableReadBuffer(const_cast<char *>(reinterpret_cast<const char *>(buf)), size, 0) {}
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explicit ReadBufferFromMemory(const std::string_view&& str)
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: SeekableReadBuffer(const_cast<char *>(str.data()), str.size(), 0) {}
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off_t seek(off_t off, int whence) override;
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off_t getPosition() override;
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};
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}
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