godot/drivers/windows/dir_access_windows.h
Pedro J. Estébanez 817ffc01e1
Make all file access 64-bit (uint64_t)
This changes the types of a big number of variables.

General rules:
- Using `uint64_t` in general. We also considered `int64_t` but eventually
  settled on keeping it unsigned, which is also closer to what one would expect
  with `size_t`/`off_t`.
- We only keep `int64_t` for `seek_end` (takes a negative offset from the end)
  and for the `Variant` bindings, since `Variant::INT` is `int64_t`. This means
  we only need to guard against passing negative values in `core_bind.cpp`.
- Using `uint32_t` integers for concepts not needing such a huge range, like
  pages, blocks, etc.

In addition:
- Improve usage of integer types in some related places; namely, `DirAccess`,
  core binds.

Note:
- On Windows, `_ftelli64` reports invalid values when using 32-bit MinGW with
  version < 8.0. This was an upstream bug fixed in 8.0. It breaks support for
  big files on 32-bit Windows builds made with that toolchain. We might add a
  workaround.

Fixes #44363.
Fixes godotengine/godot-proposals#400.

Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>
2021-05-16 17:52:31 +02:00

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3.4 KiB
C++

/*************************************************************************/
/* dir_access_windows.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef DIR_ACCESS_WINDOWS_H
#define DIR_ACCESS_WINDOWS_H
#ifdef WINDOWS_ENABLED
#include "core/os/dir_access.h"
/**
@author Juan Linietsky <reduz@gmail.com>
*/
struct DirAccessWindowsPrivate;
class DirAccessWindows : public DirAccess {
enum {
MAX_DRIVES = 26
};
DirAccessWindowsPrivate *p;
/* Windows stuff */
char drives[MAX_DRIVES]; // a-z:
int drive_count;
String current_dir;
bool _cisdir;
bool _cishidden;
public:
virtual Error list_dir_begin(); ///< This starts dir listing
virtual String get_next();
virtual bool current_is_dir() const;
virtual bool current_is_hidden() const;
virtual void list_dir_end(); ///<
virtual int get_drive_count();
virtual String get_drive(int p_drive);
virtual Error change_dir(String p_dir); ///< can be relative or absolute, return false on success
virtual String get_current_dir(); ///< return current dir location
virtual String get_current_dir_without_drive();
virtual bool file_exists(String p_file);
virtual bool dir_exists(String p_dir);
virtual Error make_dir(String p_dir);
virtual Error rename(String p_path, String p_new_path);
virtual Error remove(String p_path);
uint64_t get_space_left();
virtual String get_filesystem_type() const;
DirAccessWindows();
~DirAccessWindows();
};
#endif //WINDOWS_ENABLED
#endif