mirror of
https://github.com/RPCS3/rpcs3.git
synced 2024-11-16 23:17:29 +00:00
460 lines
10 KiB
C++
460 lines
10 KiB
C++
#pragma once
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
#include <type_traits>
|
|
|
|
#include "types.h"
|
|
#include "BitSet.h"
|
|
|
|
namespace fs
|
|
{
|
|
// File open mode flags
|
|
enum struct open_mode : u32
|
|
{
|
|
read,
|
|
write,
|
|
append,
|
|
create,
|
|
trunc,
|
|
excl,
|
|
};
|
|
|
|
constexpr bitset_t<open_mode> read = open_mode::read; // Enable reading
|
|
constexpr bitset_t<open_mode> write = open_mode::write; // Enable writing
|
|
constexpr bitset_t<open_mode> append = open_mode::append; // Always append to the end of the file
|
|
constexpr bitset_t<open_mode> create = open_mode::create; // Create file if it doesn't exist
|
|
constexpr bitset_t<open_mode> trunc = open_mode::trunc; // Clear opened file if it's not empty
|
|
constexpr bitset_t<open_mode> excl = open_mode::excl; // Failure if the file already exists (used with `create`)
|
|
|
|
constexpr bitset_t<open_mode> rewrite = write + create + trunc;
|
|
|
|
// File seek mode
|
|
enum class seek_mode : u32
|
|
{
|
|
seek_set,
|
|
seek_cur,
|
|
seek_end,
|
|
};
|
|
|
|
constexpr auto seek_set = seek_mode::seek_set; // From beginning
|
|
constexpr auto seek_cur = seek_mode::seek_cur; // From current position
|
|
constexpr auto seek_end = seek_mode::seek_end; // From end
|
|
|
|
// File attributes (TODO)
|
|
struct stat_t
|
|
{
|
|
bool is_directory;
|
|
bool is_writable;
|
|
u64 size;
|
|
s64 atime;
|
|
s64 mtime;
|
|
s64 ctime;
|
|
};
|
|
|
|
// File handle base
|
|
struct file_base
|
|
{
|
|
virtual ~file_base() = default;
|
|
|
|
virtual stat_t stat() = 0;
|
|
virtual bool trunc(u64 length) = 0;
|
|
virtual u64 read(void* buffer, u64 size) = 0;
|
|
virtual u64 write(const void* buffer, u64 size) = 0;
|
|
virtual u64 seek(s64 offset, seek_mode whence) = 0;
|
|
virtual u64 size() = 0;
|
|
};
|
|
|
|
// Directory entry (TODO)
|
|
struct dir_entry : stat_t
|
|
{
|
|
std::string name;
|
|
};
|
|
|
|
// Directory handle base
|
|
struct dir_base
|
|
{
|
|
virtual ~dir_base() = default;
|
|
|
|
virtual bool read(dir_entry&) = 0;
|
|
virtual void rewind() = 0;
|
|
};
|
|
|
|
// Virtual device
|
|
struct device_base
|
|
{
|
|
virtual ~device_base() = default;
|
|
|
|
virtual bool stat(const std::string& path, stat_t& info) = 0;
|
|
virtual bool remove_dir(const std::string& path) = 0;
|
|
virtual bool create_dir(const std::string& path) = 0;
|
|
virtual bool rename(const std::string& from, const std::string& to) = 0;
|
|
virtual bool remove(const std::string& path) = 0;
|
|
virtual bool trunc(const std::string& path, u64 length) = 0;
|
|
|
|
virtual std::unique_ptr<file_base> open(const std::string& path, bitset_t<open_mode> mode) = 0;
|
|
virtual std::unique_ptr<dir_base> open_dir(const std::string& path) = 0;
|
|
};
|
|
|
|
// Get virtual device for specified path (nullptr for real path)
|
|
std::shared_ptr<device_base> get_virtual_device(const std::string& path);
|
|
|
|
// Set virtual device with specified name (nullptr for deletion)
|
|
std::shared_ptr<device_base> set_virtual_device(const std::string& root_name, const std::shared_ptr<device_base>&);
|
|
|
|
// Try to get parent directory (returns empty string on failure)
|
|
std::string get_parent_dir(const std::string& path);
|
|
|
|
// Get file information
|
|
bool stat(const std::string& path, stat_t& info);
|
|
|
|
// Check whether a file or a directory exists (not recommended, use is_file() or is_dir() instead)
|
|
bool exists(const std::string& path);
|
|
|
|
// Check whether the file exists and is NOT a directory
|
|
bool is_file(const std::string& path);
|
|
|
|
// Check whether the directory exists and is NOT a file
|
|
bool is_dir(const std::string& path);
|
|
|
|
// Delete empty directory
|
|
bool remove_dir(const std::string& path);
|
|
|
|
// Create directory
|
|
bool create_dir(const std::string& path);
|
|
|
|
// Create directories
|
|
bool create_path(const std::string& path);
|
|
|
|
// Rename (move) file or directory
|
|
bool rename(const std::string& from, const std::string& to);
|
|
|
|
// Copy file contents
|
|
bool copy_file(const std::string& from, const std::string& to, bool overwrite);
|
|
|
|
// Delete file
|
|
bool remove_file(const std::string& path);
|
|
|
|
// Change file size (possibly appending zeros)
|
|
bool truncate_file(const std::string& path, u64 length);
|
|
|
|
class file final
|
|
{
|
|
std::unique_ptr<file_base> m_file;
|
|
|
|
[[noreturn]] void xnull() const;
|
|
[[noreturn]] void xfail() const;
|
|
|
|
public:
|
|
// Default constructor
|
|
file() = default;
|
|
|
|
// Open file with specified mode
|
|
explicit file(const std::string& path, bitset_t<open_mode> mode = ::fs::read)
|
|
{
|
|
open(path, mode);
|
|
}
|
|
|
|
// Open file with specified mode
|
|
bool open(const std::string& path, bitset_t<open_mode> mode = ::fs::read);
|
|
|
|
// Open memory for read
|
|
explicit file(const void* ptr, std::size_t size);
|
|
|
|
// Check whether the handle is valid (opened file)
|
|
explicit operator bool() const
|
|
{
|
|
return m_file.operator bool();
|
|
}
|
|
|
|
// Close the file explicitly
|
|
void close()
|
|
{
|
|
m_file.reset();
|
|
}
|
|
|
|
void reset(std::unique_ptr<file_base>&& ptr)
|
|
{
|
|
m_file = std::move(ptr);
|
|
}
|
|
|
|
std::unique_ptr<file_base> release()
|
|
{
|
|
return std::move(m_file);
|
|
}
|
|
|
|
// Change file size (possibly appending zero bytes)
|
|
bool trunc(u64 length) const
|
|
{
|
|
if (!m_file) xnull();
|
|
return m_file->trunc(length);
|
|
}
|
|
|
|
// Get file information
|
|
stat_t stat() const
|
|
{
|
|
if (!m_file) xnull();
|
|
return m_file->stat();
|
|
}
|
|
|
|
// Read the data from the file and return the amount of data written in buffer
|
|
u64 read(void* buffer, u64 count) const
|
|
{
|
|
if (!m_file) xnull();
|
|
return m_file->read(buffer, count);
|
|
}
|
|
|
|
// Write the data to the file and return the amount of data actually written
|
|
u64 write(const void* buffer, u64 count) const
|
|
{
|
|
if (!m_file) xnull();
|
|
return m_file->write(buffer, count);
|
|
}
|
|
|
|
// Change current position, returns resulting position
|
|
u64 seek(s64 offset, seek_mode whence = seek_set) const
|
|
{
|
|
if (!m_file) xnull();
|
|
return m_file->seek(offset, whence);
|
|
}
|
|
|
|
// Get file size
|
|
u64 size() const
|
|
{
|
|
if (!m_file) xnull();
|
|
return m_file->size();
|
|
}
|
|
|
|
// Get current position
|
|
u64 pos() const
|
|
{
|
|
if (!m_file) xnull();
|
|
return m_file->seek(0, seek_cur);
|
|
}
|
|
|
|
// Write std::string unconditionally
|
|
const file& write(const std::string& str) const
|
|
{
|
|
if (write(str.data(), str.size()) != str.size()) xfail();
|
|
return *this;
|
|
}
|
|
|
|
// Write POD unconditionally
|
|
template<typename T>
|
|
std::enable_if_t<std::is_pod<T>::value && !std::is_pointer<T>::value, const file&> write(const T& data) const
|
|
{
|
|
if (write(std::addressof(data), sizeof(T)) != sizeof(T)) xfail();
|
|
return *this;
|
|
}
|
|
|
|
// Write POD std::vector unconditionally
|
|
template<typename T>
|
|
std::enable_if_t<std::is_pod<T>::value && !std::is_pointer<T>::value, const file&> write(const std::vector<T>& vec) const
|
|
{
|
|
if (write(vec.data(), vec.size() * sizeof(T)) != vec.size() * sizeof(T)) xfail();
|
|
return *this;
|
|
}
|
|
|
|
// Read std::string, size must be set by resize() method
|
|
bool read(std::string& str) const
|
|
{
|
|
return read(&str[0], str.size()) == str.size();
|
|
}
|
|
|
|
// Read std::string
|
|
bool read(std::string& str, std::size_t size) const
|
|
{
|
|
str.resize(size);
|
|
return read(&str[0], size) == size;
|
|
}
|
|
|
|
// Read POD, sizeof(T) is used
|
|
template<typename T>
|
|
std::enable_if_t<std::is_pod<T>::value && !std::is_pointer<T>::value, bool> read(T& data) const
|
|
{
|
|
return read(&data, sizeof(T)) == sizeof(T);
|
|
}
|
|
|
|
// Read POD std::vector, size must be set by resize() method
|
|
template<typename T>
|
|
std::enable_if_t<std::is_pod<T>::value && !std::is_pointer<T>::value, bool> read(std::vector<T>& vec) const
|
|
{
|
|
return read(vec.data(), sizeof(T) * vec.size()) == sizeof(T) * vec.size();
|
|
}
|
|
|
|
// Read POD std::vector
|
|
template<typename T>
|
|
std::enable_if_t<std::is_pod<T>::value && !std::is_pointer<T>::value, bool> read(std::vector<T>& vec, std::size_t size) const
|
|
{
|
|
vec.resize(size);
|
|
return read(vec.data(), sizeof(T) * size) == sizeof(T) * size;
|
|
}
|
|
|
|
// Read POD (experimental)
|
|
template<typename T>
|
|
std::enable_if_t<std::is_pod<T>::value && !std::is_pointer<T>::value, T> read() const
|
|
{
|
|
T result;
|
|
if (!read(result)) xfail();
|
|
return result;
|
|
}
|
|
|
|
// Read full file to std::string
|
|
std::string to_string() const
|
|
{
|
|
std::string result;
|
|
result.resize(size());
|
|
if (seek(0), !read(result)) xfail();
|
|
return result;
|
|
}
|
|
|
|
// Read full file to std::vector
|
|
template<typename T>
|
|
std::enable_if_t<std::is_pod<T>::value && !std::is_pointer<T>::value, std::vector<T>> to_vector() const
|
|
{
|
|
std::vector<T> result;
|
|
result.resize(size() / sizeof(T));
|
|
if (seek(0), !read(result)) xfail();
|
|
return result;
|
|
}
|
|
};
|
|
|
|
class dir final
|
|
{
|
|
std::unique_ptr<dir_base> m_dir;
|
|
|
|
[[noreturn]] void xnull() const;
|
|
|
|
public:
|
|
dir() = default;
|
|
|
|
// Open dir handle
|
|
explicit dir(const std::string& path)
|
|
{
|
|
open(path);
|
|
}
|
|
|
|
// Open specified directory
|
|
bool open(const std::string& path);
|
|
|
|
// Check whether the handle is valid (opened directory)
|
|
explicit operator bool() const
|
|
{
|
|
return m_dir.operator bool();
|
|
}
|
|
|
|
// Close the directory explicitly
|
|
void close()
|
|
{
|
|
m_dir.reset();
|
|
}
|
|
|
|
void reset(std::unique_ptr<dir_base>&& ptr)
|
|
{
|
|
m_dir = std::move(ptr);
|
|
}
|
|
|
|
std::unique_ptr<dir_base> release()
|
|
{
|
|
return std::move(m_dir);
|
|
}
|
|
|
|
// Get next directory entry
|
|
bool read(dir_entry& out) const
|
|
{
|
|
if (!m_dir) xnull();
|
|
return m_dir->read(out);
|
|
}
|
|
|
|
// Reset to the beginning
|
|
void rewind() const
|
|
{
|
|
if (!m_dir) xnull();
|
|
return m_dir->rewind();
|
|
}
|
|
|
|
class iterator
|
|
{
|
|
dir* m_parent;
|
|
dir_entry m_entry;
|
|
|
|
public:
|
|
enum class mode
|
|
{
|
|
from_first,
|
|
from_current
|
|
};
|
|
|
|
iterator(dir* parent, mode mode_ = mode::from_first)
|
|
: m_parent(parent)
|
|
{
|
|
if (!m_parent)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (mode_ == mode::from_first)
|
|
{
|
|
m_parent->rewind();
|
|
}
|
|
|
|
if (!m_parent->read(m_entry))
|
|
{
|
|
m_parent = nullptr;
|
|
}
|
|
}
|
|
|
|
dir_entry& operator *()
|
|
{
|
|
return m_entry;
|
|
}
|
|
|
|
iterator& operator++()
|
|
{
|
|
*this = { m_parent, mode::from_current };
|
|
return *this;
|
|
}
|
|
|
|
bool operator !=(const iterator& rhs) const
|
|
{
|
|
return m_parent != rhs.m_parent;
|
|
}
|
|
};
|
|
|
|
iterator begin()
|
|
{
|
|
return{ m_dir ? this : nullptr };
|
|
}
|
|
|
|
iterator end()
|
|
{
|
|
return{ nullptr };
|
|
}
|
|
};
|
|
|
|
// Get configuration directory
|
|
const std::string& get_config_dir();
|
|
|
|
// Get executable directory
|
|
const std::string& get_executable_dir();
|
|
|
|
// Delete directory and all its contents recursively
|
|
void remove_all(const std::string& path, bool remove_root = true);
|
|
|
|
// Get size of all files recursively
|
|
u64 get_dir_size(const std::string& path);
|
|
|
|
enum class error : uint
|
|
{
|
|
ok = 0,
|
|
|
|
inval,
|
|
noent,
|
|
exist,
|
|
};
|
|
|
|
// Error code returned
|
|
extern thread_local error g_tls_error;
|
|
}
|