// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <filesystem>
#include <memory>
#include "common/fs/fs_types.h"
#include "common/fs/fs_util.h"
namespace Common::FS {
class IOFile;
// File Operations
/**
* Creates a new file at path with the specified size.
*
* Failures occur when:
* - Input path is not valid
* - The input path's parent directory does not exist
* - Filesystem object at path exists
* - Filesystem at path is read only
*
* @param path Filesystem path
* @param size File size
*
* @returns True if the file creation succeeds, false otherwise.
*/
[[nodiscard]] bool NewFile(const std::filesystem::path& path, u64 size = 0);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] bool NewFile(const Path& path, u64 size = 0) {
if constexpr (IsChar<typename Path::value_type>) {
return NewFile(ToU8String(path), size);
} else {
return NewFile(std::filesystem::path{path}, size);
}
}
#endif
/**
* Removes a file at path.
*
* Failures occur when:
* - Input path is not valid
* - Filesystem object at path is not a file
* - Filesystem at path is read only
*
* @param path Filesystem path
*
* @returns True if file removal succeeds or file does not exist, false otherwise.
*/
bool RemoveFile(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
bool RemoveFile(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return RemoveFile(ToU8String(path));
} else {
return RemoveFile(std::filesystem::path{path});
}
}
#endif
/**
* Renames a file from old_path to new_path.
*
* Failures occur when:
* - One or both input path(s) is not valid
* - Filesystem object at old_path does not exist
* - Filesystem object at old_path is not a file
* - Filesystem object at new_path exists
* - Filesystem at either path is read only
*
* @param old_path Old filesystem path
* @param new_path New filesystem path
*
* @returns True if file rename succeeds, false otherwise.
*/
[[nodiscard]] bool RenameFile(const std::filesystem::path& old_path,
const std::filesystem::path& new_path);
#ifdef _WIN32
template <typename Path1, typename Path2>
[[nodiscard]] bool RenameFile(const Path1& old_path, const Path2& new_path) {
using ValueType1 = typename Path1::value_type;
using ValueType2 = typename Path2::value_type;
if constexpr (IsChar<ValueType1> && IsChar<ValueType2>) {
return RenameFile(ToU8String(old_path), ToU8String(new_path));
} else if constexpr (IsChar<ValueType1> && !IsChar<ValueType2>) {
return RenameFile(ToU8String(old_path), new_path);
} else if constexpr (!IsChar<ValueType1> && IsChar<ValueType2>) {
return RenameFile(old_path, ToU8String(new_path));
} else {
return RenameFile(std::filesystem::path{old_path}, std::filesystem::path{new_path});
}
}
#endif
/**
* Opens a file at path with the specified file access mode.
* This function behaves differently depending on the FileAccessMode.
* These behaviors are documented in each enum value of FileAccessMode.
*
* Failures occur when:
* - Input path is not valid
* - Filesystem object at path exists and is not a regular file
* - The file is not open
*
* @param path Filesystem path
* @param mode File access mode
* @param type File type, default is BinaryFile. Use TextFile to open the file as a text file
* @param flag (Windows only) File-share access flag, default is ShareReadOnly
*
* @returns A shared pointer to the opened file. Returns nullptr on failure.
*/
[[nodiscard]] std::shared_ptr<IOFile> FileOpen(const std::filesystem::path& path,
FileAccessMode mode,
FileType type = FileType::BinaryFile,
FileShareFlag flag = FileShareFlag::ShareReadOnly);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] std::shared_ptr<IOFile> FileOpen(const Path& path, FileAccessMode mode,
FileType type = FileType::BinaryFile,
FileShareFlag flag = FileShareFlag::ShareReadOnly) {
if constexpr (IsChar<typename Path::value_type>) {
return FileOpen(ToU8String(path), mode, type, flag);
} else {
return FileOpen(std::filesystem::path{path}, mode, type, flag);
}
}
#endif
// Directory Operations
/**
* Creates a directory at path.
* Note that this function will *always* assume that the input path is a directory. For example,
* if the input path is /path/to/directory/file.txt, it will create a directory called "file.txt".
* If you intend to create the parent directory of a file, use CreateParentDir instead.
*
* Failures occur when:
* - Input path is not valid
* - The input path's parent directory does not exist
* - Filesystem at path is read only
*
* @param path Filesystem path
*
* @returns True if directory creation succeeds or directory already exists, false otherwise.
*/
[[nodiscard]] bool CreateDir(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] bool CreateDir(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return CreateDir(ToU8String(path));
} else {
return CreateDir(std::filesystem::path{path});
}
}
#endif
/**
* Recursively creates a directory at path.
* Note that this function will *always* assume that the input path is a directory. For example,
* if the input path is /path/to/directory/file.txt, it will create a directory called "file.txt".
* If you intend to create the parent directory of a file, use CreateParentDirs instead.
* Unlike CreateDir, this creates all of input path's parent directories if they do not exist.
*
* Failures occur when:
* - Input path is not valid
* - Filesystem at path is read only
*
* @param path Filesystem path
*
* @returns True if directory creation succeeds or directory already exists, false otherwise.
*/
[[nodiscard]] bool CreateDirs(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] bool CreateDirs(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return CreateDirs(ToU8String(path));
} else {
return CreateDirs(std::filesystem::path{path});
}
}
#endif
/**
* Creates the parent directory of a given path.
* This function calls CreateDir(path.parent_path()), see CreateDir for more details.
*
* @param path Filesystem path
*
* @returns True if directory creation succeeds or directory already exists, false otherwise.
*/
[[nodiscard]] bool CreateParentDir(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] bool CreateParentDir(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return CreateParentDir(ToU8String(path));
} else {
return CreateParentDir(std::filesystem::path{path});
}
}
#endif
/**
* Recursively creates the parent directory of a given path.
* This function calls CreateDirs(path.parent_path()), see CreateDirs for more details.
*
* @param path Filesystem path
*
* @returns True if directory creation succeeds or directory already exists, false otherwise.
*/
[[nodiscard]] bool CreateParentDirs(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] bool CreateParentDirs(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return CreateParentDirs(ToU8String(path));
} else {
return CreateParentDirs(std::filesystem::path{path});
}
}
#endif
/**
* Removes a directory at path.
*
* Failures occur when:
* - Input path is not valid
* - Filesystem object at path is not a directory
* - The given directory is not empty
* - Filesystem at path is read only
*
* @param path Filesystem path
*
* @returns True if directory removal succeeds or directory does not exist, false otherwise.
*/
bool RemoveDir(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
bool RemoveDir(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return RemoveDir(ToU8String(path));
} else {
return RemoveDir(std::filesystem::path{path});
}
}
#endif
/**
* Removes all the contents within the given directory and removes the directory itself.
*
* Failures occur when:
* - Input path is not valid
* - Filesystem object at path is not a directory
* - Filesystem at path is read only
*
* @param path Filesystem path
*
* @returns True if the directory and all of its contents are removed successfully, false otherwise.
*/
bool RemoveDirRecursively(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
bool RemoveDirRecursively(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return RemoveDirRecursively(ToU8String(path));
} else {
return RemoveDirRecursively(std::filesystem::path{path});
}
}
#endif
/**
* Removes all the contents within the given directory without removing the directory itself.
*
* Failures occur when:
* - Input path is not valid
* - Filesystem object at path is not a directory
* - Filesystem at path is read only
*
* @param path Filesystem path
*
* @returns True if all of the directory's contents are removed successfully, false otherwise.
*/
bool RemoveDirContentsRecursively(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
bool RemoveDirContentsRecursively(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return RemoveDirContentsRecursively(ToU8String(path));
} else {
return RemoveDirContentsRecursively(std::filesystem::path{path});
}
}
#endif
/**
* Renames a directory from old_path to new_path.
*
* Failures occur when:
* - One or both input path(s) is not valid
* - Filesystem object at old_path does not exist
* - Filesystem object at old_path is not a directory
* - Filesystem object at new_path exists
* - Filesystem at either path is read only
*
* @param old_path Old filesystem path
* @param new_path New filesystem path
*
* @returns True if directory rename succeeds, false otherwise.
*/
[[nodiscard]] bool RenameDir(const std::filesystem::path& old_path,
const std::filesystem::path& new_path);
#ifdef _WIN32
template <typename Path1, typename Path2>
[[nodiscard]] bool RenameDir(const Path1& old_path, const Path2& new_path) {
using ValueType1 = typename Path1::value_type;
using ValueType2 = typename Path2::value_type;
if constexpr (IsChar<ValueType1> && IsChar<ValueType2>) {
return RenameDir(ToU8String(old_path), ToU8String(new_path));
} else if constexpr (IsChar<ValueType1> && !IsChar<ValueType2>) {
return RenameDir(ToU8String(old_path), new_path);
} else if constexpr (!IsChar<ValueType1> && IsChar<ValueType2>) {
return RenameDir(old_path, ToU8String(new_path));
} else {
return RenameDir(std::filesystem::path{old_path}, std::filesystem::path{new_path});
}
}
#endif
/**
* Iterates over the directory entries of a given directory.
* This does not iterate over the sub-directories of the given directory.
* The DirEntryCallable callback is called for each visited directory entry.
* A filter can be set to control which directory entries are visited based on their type.
* By default, both files and directories are visited.
* If the callback returns false or there is an error, the iteration is immediately halted.
*
* Failures occur when:
* - Input path is not valid
* - Filesystem object at path is not a directory
*
* @param path Filesystem path
* @param callback Callback to be called for each visited directory entry
* @param filter Directory entry type filter
*/
void IterateDirEntries(const std::filesystem::path& path, const DirEntryCallable& callback,
DirEntryFilter filter = DirEntryFilter::All);
#ifdef _WIN32
template <typename Path>
void IterateDirEntries(const Path& path, const DirEntryCallable& callback,
DirEntryFilter filter = DirEntryFilter::All) {
if constexpr (IsChar<typename Path::value_type>) {
IterateDirEntries(ToU8String(path), callback, filter);
} else {
IterateDirEntries(std::filesystem::path{path}, callback, filter);
}
}
#endif
/**
* Iterates over the directory entries of a given directory and its sub-directories.
* The DirEntryCallable callback is called for each visited directory entry.
* A filter can be set to control which directory entries are visited based on their type.
* By default, both files and directories are visited.
* If the callback returns false or there is an error, the iteration is immediately halted.
*
* Failures occur when:
* - Input path is not valid
* - Filesystem object at path does not exist
* - Filesystem object at path is not a directory
*
* @param path Filesystem path
* @param callback Callback to be called for each visited directory entry
* @param filter Directory entry type filter
*/
void IterateDirEntriesRecursively(const std::filesystem::path& path,
const DirEntryCallable& callback,
DirEntryFilter filter = DirEntryFilter::All);
#ifdef _WIN32
template <typename Path>
void IterateDirEntriesRecursively(const Path& path, const DirEntryCallable& callback,
DirEntryFilter filter = DirEntryFilter::All) {
if constexpr (IsChar<typename Path::value_type>) {
IterateDirEntriesRecursively(ToU8String(path), callback, filter);
} else {
IterateDirEntriesRecursively(std::filesystem::path{path}, callback, filter);
}
}
#endif
// Generic Filesystem Operations
/**
* Returns whether a filesystem object at path exists.
*
* @param path Filesystem path
*
* @returns True if a filesystem object at path exists, false otherwise.
*/
[[nodiscard]] bool Exists(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] bool Exists(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return Exists(ToU8String(path));
} else {
return Exists(std::filesystem::path{path});
}
}
#endif
/**
* Returns whether a filesystem object at path is a file.
*
* @param path Filesystem path
*
* @returns True if a filesystem object at path is a file, false otherwise.
*/
[[nodiscard]] bool IsFile(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] bool IsFile(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return IsFile(ToU8String(path));
} else {
return IsFile(std::filesystem::path{path});
}
}
#endif
/**
* Returns whether a filesystem object at path is a directory.
*
* @param path Filesystem path
*
* @returns True if a filesystem object at path is a directory, false otherwise.
*/
[[nodiscard]] bool IsDir(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] bool IsDir(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return IsDir(ToU8String(path));
} else {
return IsDir(std::filesystem::path{path});
}
}
#endif
/**
* Gets the current working directory.
*
* @returns The current working directory. Returns an empty path on failure.
*/
[[nodiscard]] std::filesystem::path GetCurrentDir();
/**
* Sets the current working directory to path.
*
* @returns True if the current working directory is successfully set, false otherwise.
*/
[[nodiscard]] bool SetCurrentDir(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] bool SetCurrentDir(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return SetCurrentDir(ToU8String(path));
} else {
return SetCurrentDir(std::filesystem::path{path});
}
}
#endif
/**
* Gets the entry type of the filesystem object at path.
*
* @param path Filesystem path
*
* @returns The entry type of the filesystem object. Returns file_type::not_found on failure.
*/
[[nodiscard]] std::filesystem::file_type GetEntryType(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] std::filesystem::file_type GetEntryType(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return GetEntryType(ToU8String(path));
} else {
return GetEntryType(std::filesystem::path{path});
}
}
#endif
/**
* Gets the size of the filesystem object at path.
*
* @param path Filesystem path
*
* @returns The size in bytes of the filesystem object. Returns 0 on failure.
*/
[[nodiscard]] u64 GetSize(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] u64 GetSize(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return GetSize(ToU8String(path));
} else {
return GetSize(std::filesystem::path{path});
}
}
#endif
/**
* Gets the free space size of the filesystem at path.
*
* @param path Filesystem path
*
* @returns The free space size in bytes of the filesystem at path. Returns 0 on failure.
*/
[[nodiscard]] u64 GetFreeSpaceSize(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] u64 GetFreeSpaceSize(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return GetFreeSpaceSize(ToU8String(path));
} else {
return GetFreeSpaceSize(std::filesystem::path{path});
}
}
#endif
/**
* Gets the total capacity of the filesystem at path.
*
* @param path Filesystem path
*
* @returns The total capacity in bytes of the filesystem at path. Returns 0 on failure.
*/
[[nodiscard]] u64 GetTotalSpaceSize(const std::filesystem::path& path);
#ifdef _WIN32
template <typename Path>
[[nodiscard]] u64 GetTotalSpaceSize(const Path& path) {
if constexpr (IsChar<typename Path::value_type>) {
return GetTotalSpaceSize(ToU8String(path));
} else {
return GetTotalSpaceSize(std::filesystem::path{path});
}
}
#endif
} // namespace Common::FS
