proper cmake

src/repo/includes/objects/FileBuffer.h

@@ -0,0 +1,43 @@
+//
+// Created by Stepan Usatiuk on 23.04.2023.
+//
+
+#ifndef SEMBACKUP_FILEBUFFER_H
+#define SEMBACKUP_FILEBUFFER_H
+
+#include <queue>
+#include <streambuf>
+
+#include "../Repository.h"
+#include "Chunk.h"
+#include "File.h"
+
+/// Streambuf implementation to read files from a File in a Repository
+class FileBuffer : public std::streambuf {
+public:
+    /// Creates a FileBuffer instance
+    /// \param repo    Constant pointer to the backing Repository, should be available during the entire lifetime
+    /// \param fileId  ID of a file to "open"
+    FileBuffer(const Repository *repo, Object::idType fileId);
+
+protected:
+    int underflow() override;
+
+    int uflow() override;
+
+    std::streamsize xsgetn(char *s, std::streamsize count) override;
+
+    int sync() override;
+
+private:
+    std::vector<char> getBuf;///< Currently loaded chunk
+
+    size_t curGetBufPos = 0;///< Currently pointed to byte in the loaded chunk
+
+    const Repository *repo;                ///< Pointer to the backing repository
+    File file;                             ///< Backing file
+    std::queue<Object::idType> chunksQueue;///< Chunks of file that weren't read yet
+};
+
+
+#endif//SEMBACKUP_FILEBUFFER_H