ply_import_buffer.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include <cstdio>
 
#include "BLI_array.hh"
#include "BLI_span.hh"
 
namespace blender::io::ply {
 
class PlyReadBuffer {
 public:
  PlyReadBuffer(const char *file_path, size_t read_buffer_size = 64 * 1024);
  ~PlyReadBuffer();
 
  void after_header(bool is_binary);
 
  Span<char> read_line();
 
  bool read_bytes(void *dst, size_t size);
 
 private:
  bool refill_buffer();
 
 private:
  FILE *file_ = nullptr;
  Array<char> buffer_;
  int pos_ = 0;
  int buf_used_ = 0;
  int last_newline_ = 0;
  size_t read_buffer_size_ = 0;
  bool at_eof_ = false;
  bool is_binary_ = false;
};
 
}  // namespace blender::io::ply