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#ifndef BYTEME_RAW_BUFFER_READER_HPP
#define BYTEME_RAW_BUFFER_READER_HPP
#include <algorithm>
#include "Reader.hpp"
/**
* @file RawBufferReader.hpp
*
* @brief Read bytes from a raw buffer without any extra transformations.
*/
namespace byteme {
/**
* @brief Read bytes from a raw buffer, usually text.
*
* This is a wrapper around an input buffer, provided for consistency with the other `*Reader` classes.
* We assume that the lifetime of the data in the `buffer` pointer exceeds the lifetime of the instance.
*/
class RawBufferReader : public Reader {
public:
/**
* @param[in] buffer Pointer to an array of bytes, usually containing text.
* @param length Length of the buffer.
*/
RawBufferReader(const unsigned char* buffer, size_t length) : buffer_(buffer), len_(length) {}
/**
* @param[in] buffer Pointer to an array of bytes, usually containing text.
* @param length Length of the buffer.
*/
RawBufferReader(const char* buffer, size_t length) : buffer_(reinterpret_cast<const unsigned char*>(buffer)), len_(length) {}
public:
bool load() {
if (used) {
return false;
}
used = true;
return true;
}
const unsigned char* buffer() const {
return buffer_;
}
size_t available() const {
return len_;
}
private:
const unsigned char* buffer_;
size_t len_;
bool used = false;
};
}
#endif
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