obj_import_file_reader.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#pragma once
 
#include "IO_wavefront_obj.hh"
 
#include "BLI_map.hh"
#include "BLI_vector.hh"
 
#include "obj_import_objects.hh"
 
namespace blender::io::obj {
 
struct MTLMaterial;
 
/* NOTE: the OBJ parser implementation is planned to get fairly large changes "soon",
 * so don't read too much into current implementation... */
class OBJParser {
 private:
  const OBJImportParams &import_params_;
  FILE *obj_file_;
  Vector<std::string> mtl_libraries_;
  size_t read_buffer_size_;
 
 public:
  OBJParser(const OBJImportParams &import_params, size_t read_buffer_size);
  ~OBJParser();

  void parse(Vector<std::unique_ptr<Geometry>> &r_all_geometries,
             GlobalVertices &r_global_vertices);
  Span<std::string> mtl_libraries() const;
 
 private:
  void add_mtl_library(StringRef path);
  void add_default_mtl_library();
  size_t parse_string_buffer(StringRef &buffer_str,
                             Vector<std::unique_ptr<Geometry>> &r_all_geometries,
                             GlobalVertices &r_global_vertices,
                             Geometry *&curr_geom,
                             bool &state_shaded_smooth,
                             std::string &state_group_name,
                             int &state_group_index,
                             std::string &state_material_name,
                             int &state_material_index);
};
 
class MTLParser {
 private:
  char mtl_file_path_[FILE_MAX];
  char mtl_dir_path_[FILE_MAX];
 
 public:
  MTLParser(StringRefNull mtl_library_, StringRefNull obj_filepath);

  void parse_and_store(Map<std::string, std::unique_ptr<MTLMaterial>> &r_materials);
};
}  // namespace blender::io::obj