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#pragma once
#include <Handle.h>
namespace Balau {
class Buffer : public SeekableHandle {
public:
Buffer(const uint8_t * buffer, size_t s) : m_buffer(const_cast<uint8_t *>(buffer)), m_bufSize(s), m_fromConst(true) { }
Buffer() throw (GeneralException) { }
virtual ~Buffer() override;
virtual void close() throw (GeneralException) override;
virtual ssize_t read(void * buf, size_t count) throw (GeneralException) override;
virtual ssize_t write(const void * buf, size_t count) throw (GeneralException) override;
virtual bool isClosed() override { return false; }
virtual bool isEOF() override { return rtell() == m_bufSize; }
virtual bool canRead() override { return true; }
virtual bool canWrite() override { return !m_fromConst; }
virtual bool canEAgainOnRead() override { return false; }
virtual bool canEAgainOnWrite() override { return false; }
virtual const char * getName() override { return "Buffer"; }
virtual off64_t getSize() override { return m_bufSize; }
const uint8_t * getBuffer() { return m_buffer + rtell(); }
void reset();
void clear();
void rewind() { rseek(0); wseek(0); }
void borrow(const uint8_t * buffer, size_t s);
private:
uint8_t * m_buffer = NULL;
bool m_fromConst = false;
off64_t m_bufSize = 0, m_numBlocks = 0;
};
};
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