fileio_func.h

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef FILEIO_FUNC_H
#define FILEIO_FUNC_H
 
#include "core/enum_type.hpp"
#include "fileio_type.h"
 
std::optional<FileHandle> FioFOpenFile(const std::string &filename, const char *mode, Subdirectory subdir, size_t *filesize = nullptr);
bool FioCheckFileExists(const std::string &filename, Subdirectory subdir);
std::string FioFindFullPath(Subdirectory subdir, const std::string &filename);
std::string FioGetDirectory(Searchpath sp, Subdirectory subdir);
std::string FioFindDirectory(Subdirectory subdir);
void FioCreateDirectory(const std::string &name);
bool FioRemove(const std::string &filename);
 
const char *FiosGetScreenshotDir();
 
void SanitizeFilename(std::string &filename);
void AppendPathSeparator(std::string &buf);
void DeterminePaths(const char *exe, bool only_local_path);
std::unique_ptr<char[]> ReadFileToMem(const std::string &filename, size_t &lenp, size_t maxsize);
bool FileExists(const std::string &filename);
bool ExtractTar(const std::string &tar_filename, Subdirectory subdir);
 
extern std::string _personal_dir; 
extern std::vector<Searchpath> _valid_searchpaths;
 
class FileScanner {
protected:
  Subdirectory subdir; 
public:
  virtual ~FileScanner() = default;
 
  uint Scan(std::string_view extension, Subdirectory sd, bool tars = true, bool recursive = true);
  uint Scan(std::string_view extension, const std::string &directory, bool recursive = true);
 
  virtual bool AddFile(const std::string &filename, size_t basepath_length, const std::string &tar_filename) = 0;
};
 
class TarScanner : FileScanner {
  uint DoScan(Subdirectory sd);
public:
  enum Mode {
    NONE     = 0,      
    BASESET  = 1 << 0, 
    NEWGRF   = 1 << 1, 
    AI       = 1 << 2, 
    SCENARIO = 1 << 3, 
    GAME     = 1 << 4, 
    ALL      = BASESET | NEWGRF | AI | SCENARIO | GAME, 
  };
 
  bool AddFile(const std::string &filename, size_t basepath_length, const std::string &tar_filename = {}) override;
 
  bool AddFile(Subdirectory sd, const std::string &filename);
 
  static uint DoScan(TarScanner::Mode mode);
};
 
DECLARE_ENUM_AS_BIT_SET(TarScanner::Mode)
 
#endif /* FILEIO_FUNC_H */