469fa47e06
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>
79 lines
3.8 KiB
C++
79 lines
3.8 KiB
C++
/*************************************************************************/
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/* file_access_memory.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef FILE_ACCESS_MEMORY_H
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#define FILE_ACCESS_MEMORY_H
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#include "core/os/file_access.h"
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class FileAccessMemory : public FileAccess {
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uint8_t *data = nullptr;
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uint64_t length = 0;
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mutable uint64_t pos = 0;
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static FileAccess *create();
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public:
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static void register_file(String p_name, Vector<uint8_t> p_data);
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static void cleanup();
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virtual Error open_custom(const uint8_t *p_data, uint64_t p_len); ///< open a file
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virtual Error _open(const String &p_path, int p_mode_flags); ///< open a file
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virtual void close(); ///< close a file
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virtual bool is_open() const; ///< true when file is open
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virtual void seek(uint64_t p_position); ///< seek to a given position
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virtual void seek_end(int64_t p_position); ///< seek from the end of file
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virtual uint64_t get_position() const; ///< get position in the file
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virtual uint64_t get_len() const; ///< get size of the file
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virtual bool eof_reached() const; ///< reading passed EOF
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virtual uint8_t get_8() const; ///< get a byte
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virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const; ///< get an array of bytes
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virtual Error get_error() const; ///< get last error
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virtual void flush();
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virtual void store_8(uint8_t p_byte); ///< store a byte
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virtual void store_buffer(const uint8_t *p_src, uint64_t p_length); ///< store an array of bytes
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virtual bool file_exists(const String &p_name); ///< return true if a file exists
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virtual uint64_t _get_modified_time(const String &p_file) { return 0; }
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virtual uint32_t _get_unix_permissions(const String &p_file) { return 0; }
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virtual Error _set_unix_permissions(const String &p_file, uint32_t p_permissions) { return FAILED; }
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FileAccessMemory() {}
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};
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#endif // FILE_ACCESS_MEMORY_H
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