dolphin/Source/Core/Common/Src/FileUtil.h

219 lines
5.7 KiB
C++

// Copyright (C) 2003 Dolphin Project.
// This program 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 2.0.
// This program 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#ifndef _FILEUTIL_H_
#define _FILEUTIL_H_
#include <fstream>
#include <cstdio>
#include <string>
#include <vector>
#include <string.h>
#include "Common.h"
// User directory indices for GetUserPath
enum {
D_USER_IDX,
D_GCUSER_IDX,
D_WIIROOT_IDX,
D_WIIUSER_IDX,
D_CONFIG_IDX,
D_GAMECONFIG_IDX,
D_MAPS_IDX,
D_CACHE_IDX,
D_SHADERCACHE_IDX,
D_SHADERS_IDX,
D_STATESAVES_IDX,
D_SCREENSHOTS_IDX,
D_OPENCL_IDX,
D_HIRESTEXTURES_IDX,
D_DUMP_IDX,
D_DUMPFRAMES_IDX,
D_DUMPAUDIO_IDX,
D_DUMPTEXTURES_IDX,
D_DUMPDSP_IDX,
D_LOGS_IDX,
D_MAILLOGS_IDX,
D_WIISYSCONF_IDX,
F_DOLPHINCONFIG_IDX,
F_DSPCONFIG_IDX,
F_DEBUGGERCONFIG_IDX,
F_LOGGERCONFIG_IDX,
F_MAINLOG_IDX,
F_WIISYSCONF_IDX,
F_RAMDUMP_IDX,
F_ARAMDUMP_IDX,
F_GCSRAM_IDX,
NUM_PATH_INDICES
};
namespace File
{
// FileSystem tree node/
struct FSTEntry
{
bool isDirectory;
u64 size; // file length or number of entries from children
std::string physicalName; // name on disk
std::string virtualName; // name in FST names table
std::vector<FSTEntry> children;
};
// Returns true if file filename exists
bool Exists(const std::string &filename);
// Returns true if filename is a directory
bool IsDirectory(const std::string &filename);
// Returns the size of filename (64bit)
u64 GetSize(const std::string &filename);
// Overloaded GetSize, accepts file descriptor
u64 GetSize(const int fd);
// Overloaded GetSize, accepts FILE*
u64 GetSize(FILE *f);
// Returns true if successful, or path already exists.
bool CreateDir(const std::string &filename);
// Creates the full path of fullPath returns true on success
bool CreateFullPath(const std::string &fullPath);
// Deletes a given filename, return true on success
// Doesn't supports deleting a directory
bool Delete(const std::string &filename);
// Deletes a directory filename, returns true on success
bool DeleteDir(const std::string &filename);
// renames file srcFilename to destFilename, returns true on success
bool Rename(const std::string &srcFilename, const std::string &destFilename);
// copies file srcFilename to destFilename, returns true on success
bool Copy(const std::string &srcFilename, const std::string &destFilename);
// creates an empty file filename, returns true on success
bool CreateEmptyFile(const std::string &filename);
// Scans the directory tree gets, starting from _Directory and adds the
// results into parentEntry. Returns the number of files+directories found
u32 ScanDirectoryTree(const std::string &directory, FSTEntry& parentEntry);
// deletes the given directory and anything under it. Returns true on success.
bool DeleteDirRecursively(const std::string &directory);
// Returns the current directory
std::string GetCurrentDir();
// Create directory and copy contents (does not overwrite existing files)
void CopyDir(const std::string &source_path, const std::string &dest_path);
// Set the current directory to given directory
bool SetCurrentDir(const std::string &directory);
// Returns a pointer to a string with a Dolphin data dir in the user's home
// directory. To be used in "multi-user" mode (that is, installed).
std::string &GetUserPath(const unsigned int DirIDX, const std::string &newPath="");
// Returns the path to where the sys file are
std::string GetSysDirectory();
#ifdef __APPLE__
std::string GetBundleDirectory();
#endif
bool WriteStringToFile(bool text_file, const std::string &str, const char *filename);
bool ReadFileToString(bool text_file, const char *filename, std::string &str);
// simple wrapper for cstdlib file functions to
// hopefully will make error checking easier
// and make forgetting an fclose() harder
class IOFile : NonCopyable
{
public:
IOFile();
IOFile(std::FILE* file);
IOFile(const std::string& filename, const char openmode[]);
~IOFile();
bool Open(const std::string& filename, const char openmode[]);
bool Close();
template <typename T>
bool ReadArray(T* data, size_t length)
{
if (!IsOpen() || length != std::fread(data, sizeof(T), length, m_file))
m_good = false;
return m_good;
}
template <typename T>
bool WriteArray(const T* data, size_t length)
{
if (!IsOpen() || length != std::fwrite(data, sizeof(T), length, m_file))
m_good = false;
return m_good;
}
bool ReadBytes(void* data, size_t length)
{
return ReadArray(reinterpret_cast<char*>(data), length);
}
bool WriteBytes(const void* data, size_t length)
{
return WriteArray(reinterpret_cast<const char*>(data), length);
}
bool IsOpen() { return NULL != m_file; }
// m_good is set to false when a read, write or other function fails
bool IsGood() { return m_good; }
operator void*() { return m_good ? m_file : NULL; }
std::FILE* ReleaseHandle();
std::FILE* GetHandle() { return m_file; }
void SetHandle(std::FILE* file);
bool Seek(s64 off, int origin);
u64 Tell();
u64 GetSize();
bool Resize(u64 size);
bool Flush();
// clear error state
void Clear() { m_good = true; std::clearerr(m_file); }
private:
IOFile& operator=(const IOFile&) /*= delete*/;
std::FILE* m_file;
bool m_good;
};
} // namespace
#endif