add text archive encoder/decoder

src/TextArchive.hh

@@ -0,0 +1,51 @@
+#pragma once
+
+#include <stdint.h>
+
+#include <phosg/JSON.hh>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "Text.hh"
+
+// This class implements loading and saving of text archives, commonly found in
+// PSO games with filenames like TextEnglish.pr2 and TextEnglish.pr3. The game
+// requires both files, but newserv needs only the pr2 file to load a text
+// archive. When saving (serializing), both pr2 and pr3 files are generated.
+class TextArchive {
+public:
+  using Keyboard = parray<parray<uint16_t, 0x10>, 7>;
+
+  explicit TextArchive(const JSON& json);
+  TextArchive(const std::string& pr2_data, bool big_endian);
+  ~TextArchive() = default;
+
+  JSON json() const;
+
+  const std::string& get_string(size_t collection_index, size_t index) const;
+  void set_string(size_t collection_index, size_t index, const std::string& data);
+  void set_string(size_t collection_index, size_t index, std::string&& data);
+  void resize_collection(size_t collection_index, size_t size);
+  void resize_collection(size_t num_collections);
+
+  Keyboard get_keyboard(size_t kb_index) const;
+  void set_keyboard(size_t kb_index, const Keyboard& kb);
+  void resize_keyboards(size_t num_keyboards);
+
+  uint8_t get_keyboard_selector_width() const;
+  void set_keyboard_selector_width(uint8_t width);
+
+  // Returns (pr2_data, pr3_data)
+  std::pair<std::string, std::string> serialize(bool big_endian) const;
+
+private:
+  template <bool IsBigEndian>
+  void load_t(const std::string& pr2_data);
+  template <bool IsBigEndian>
+  std::pair<std::string, std::string> serialize_t() const;
+
+  std::vector<std::vector<std::string>> collections;
+  std::vector<std::unique_ptr<Keyboard>> keyboards;
+  uint8_t keyboard_selector_width;
+};