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// *****************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
// *****************************************************************************
#ifndef FILE_ACCESS_H_8017341345614857
#define FILE_ACCESS_H_8017341345614857
#include <functional>
#include "zstring.h"
#include "file_error.h"
#include "file_id_def.h"
#include "serialize.h"
namespace zen
{
//note: certain functions require COM initialization! (vista_file_op.h)
struct PathComponents
{
Zstring rootPath; //itemPath = rootPath + (FILE_NAME_SEPARATOR?) + relPath
Zstring relPath; //
};
std::optional<PathComponents> parsePathComponents(const Zstring& itemPath); //no value on failure
std::optional<Zstring> getParentFolderPath(const Zstring& itemPath);
//POSITIVE existence checks; if false: 1. item not existing 2. different type 3.device access error or similar
bool fileAvailable(const Zstring& filePath); //noexcept
bool dirAvailable (const Zstring& dirPath ); //
enum class ItemType
{
FILE,
FOLDER,
SYMLINK,
};
//(hopefully) fast: does not distinguish between error/not existing
ItemType getItemType(const Zstring& itemPath); //throw FileError
//execute potentially SLOW folder traversal but distinguish error/not existing
// assumes: - base path still exists
// - all child item path parts must correspond to folder traversal
// => we can conclude whether an item is *not* existing anymore by doing a *case-sensitive* name search => potentially SLOW!
std::optional<ItemType> itemStillExists(const Zstring& itemPath); //throw FileError
enum class ProcSymlink
{
DIRECT,
FOLLOW
};
void setFileTime(const Zstring& filePath, time_t modTime, ProcSymlink procSl); //throw FileError
//symlink handling: always follow
uint64_t getFreeDiskSpace(const Zstring& path); //throw FileError, returns 0 if not available
struct FileDetails
{
uint64_t fileSize = 0;
time_t modTime = 0; //number of seconds since Jan. 1st 1970 UTC
VolumeId volumeId = 0;
};
//symlink handling: always follow
FileDetails getFileDetails(const Zstring& itemPath); //throw FileError
//get per-user directory designated for temporary files:
Zstring getTempFolderPath(); //throw FileError
void removeFilePlain (const Zstring& filePath); //throw FileError; ERROR if not existing
void removeSymlinkPlain (const Zstring& linkPath); //throw FileError; ERROR if not existing
void removeDirectoryPlain(const Zstring& dirPath ); //throw FileError; ERROR if not existing
void removeDirectoryPlainRecursion(const Zstring& dirPath); //throw FileError; ERROR if not existing
void moveAndRenameItem(const Zstring& itemPathOld, const Zstring& itemPathNew, bool replaceExisting); //throw FileError, ErrorDifferentVolume, ErrorTargetExisting
bool supportsPermissions(const Zstring& dirPath); //throw FileError, follows symlinks
//copy permissions for files, directories or symbolic links: requires admin rights
void copyItemPermissions(const Zstring& sourcePath, const Zstring& targetPath, ProcSymlink procSl); //throw FileError
void createDirectory(const Zstring& dirPath); //throw FileError, ErrorTargetExisting
//- no error if already existing
//- create recursively if parent directory is not existing
void createDirectoryIfMissingRecursion(const Zstring& dirPath); //throw FileError
//symlink handling: follow link!
//expects existing source/target directories
//reports note-worthy errors only
void tryCopyDirectoryAttributes(const Zstring& sourcePath, const Zstring& targetPath); //throw FileError
void copySymlink(const Zstring& sourceLink, const Zstring& targetLink, bool copyFilePermissions); //throw FileError
struct FileCopyResult
{
uint64_t fileSize = 0;
time_t modTime = 0; //number of seconds since Jan. 1st 1970 UTC
FileId sourceFileId;
FileId targetFileId;
std::optional<FileError> errorModTime; //failure to set modification time
};
FileCopyResult copyNewFile(const Zstring& sourceFile, const Zstring& targetFile, bool copyFilePermissions, //throw FileError, ErrorTargetExisting, ErrorFileLocked, X
//accummulated delta != file size! consider ADS, sparse, compressed files
const IOCallback& notifyUnbufferedIO /*throw X*/);
}
#endif //FILE_ACCESS_H_8017341345614857
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