proper cmake

src/chunkers/includes/BuzhashChunker.h

@@ -0,0 +1,34 @@
+//
+// Created by Stepan Usatiuk on 26.04.2023.
+//
+
+#ifndef SEMBACKUP_BUZHASHCHUNKER_H
+#define SEMBACKUP_BUZHASHCHUNKER_H
+
+#include <streambuf>
+
+#include "Buzhash.h"
+#include "Chunker.h"
+
+/// Chunker implementation using rolling hash
+class BuzhashChunker : public Chunker {
+public:
+    /// Constructs a BuzhashChunker
+    /// \copydoc Chunker::Chunker
+    /// \param minBytes Minimum amount of bytes in returned chunks
+    /// \param mask     Amount of trailing zeroes in the rolling hash at which the file is cut (results in average chunk size of 2^mask bytes)
+    /// \param window   Rolling hash window (how many of chunks last bytes are included in the hash, the default is recommended)
+    BuzhashChunker(std::streambuf *buf, unsigned long long minBytes, unsigned long long maxBytes, unsigned long long mask, uint32_t window = 4095);
+
+    /// \copydoc Chunker::getNext
+    std::pair<std::string, std::vector<char>> getNext() override;
+
+private:
+    const unsigned long long window;  ///< Rolling hash window
+    const unsigned long long minBytes;///< Minimum amount of bytes in returned chunks
+    const unsigned long long mask;    ///< Amount of trailing zeroes in the rolling hash at which the file is cut
+    Buzhash buzhash;                  ///< Hasher instance
+};
+
+
+#endif//SEMBACKUP_BUZHASHCHUNKER_H