Reqrite project as BEd specific.

include/internal/buffer/buffer.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include "definitions.h"
+#include "internal/marks/marks.h"
+#include "pch.h"
+
+namespace bed::internal::buffer {
+struct Buffer {
+  internal::vase::Vase vase;
+  internal::marks::MarksEngine marks;
+  uint64_t line = 0;
+  bool modified;
+  std::filesystem::path save_path = "";
+  struct {
+    uint64_t start{0};
+    uint64_t end{0};
+  } prev_range;
+
+  Buffer();
+  Buffer(std::string command);
+  Buffer(std::filesystem::path path);
+
+  ~Buffer() = default;
+
+  void load(std::string command);
+  void load(std::filesystem::path path);
+  void jump(uint64_t n_line);
+  void join(uint64_t start_line, uint64_t end_line);
+  void remove(uint64_t start_line, uint64_t end_line);
+  void append(std::string text, uint64_t line);
+  void print(uint64_t start_line, uint64_t end_line);
+  std::string list_string(std::string_view s);
+};
+} // namespace bed::internal::buffer