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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de) *
// **************************************************************************
#ifndef FILE_HANDLING_H_INCLUDED
#define FILE_HANDLING_H_INCLUDED
#include "zstring.h"
#include "file_error.h"
#include "int64.h"
namespace zen
{
struct CallbackRemoveDir;
struct CallbackMoveFile;
struct CallbackCopyFile;
bool fileExists (const Zstring& filename); //throw() replaces wxFileExists()
bool dirExists (const Zstring& dirname); //throw() replaces wxDirExists()
bool symlinkExists (const Zstring& objname); //throw() check whether a symbolic link exists
bool somethingExists(const Zstring& objname); //throw() check whether any object with this name exists
//check whether two folders are located on the same (logical) volume
//left and right directories NEED NOT yet exist! volume prefix is sufficient! path may end with PATH_SEPARATOR
enum ResponseSame
{
IS_SAME_YES,
IS_SAME_NO,
IS_SAME_CANT_SAY
};
ResponseSame onSameVolume(const Zstring& folderLeft, const Zstring& folderRight); //throw()
void checkthis(const Zstring& folderLeft); //throw()
//copy file or directory create/last change date,
void copyFileTimes(const Zstring& sourceDir, const Zstring& targetDir, bool derefSymlinks); //throw (FileError)
//symlink handling: always evaluate target
UInt64 getFilesize(const Zstring& filename); //throw (FileError)
//file handling
bool removeFile(const Zstring& filename); //return "true" if file was actually deleted; throw (FileError)
void removeDirectory(const Zstring& directory, CallbackRemoveDir* callback = NULL); //throw (FileError)
//rename file or directory: no copying!!!
void renameFile(const Zstring& oldName, const Zstring& newName); //throw (FileError);
//move source to target; expectations: all super-directories of target exist
//"ignoreExisting": if target already exists, source is deleted
void moveFile(const Zstring& sourceFile, const Zstring& targetFile, bool ignoreExisting, CallbackMoveFile* callback); //throw (FileError);
//move source to target including subdirectories
//"ignoreExisting": existing directories and files will be enriched
void moveDirectory(const Zstring& sourceDir, const Zstring& targetDir, bool ignoreExisting, CallbackMoveFile* callback); //throw (FileError);
//creates superdirectories automatically:
void createDirectory(const Zstring& directory, const Zstring& templateDir, bool copyFilePermissions); //throw (FileError);
void createDirectory(const Zstring& directory); //throw (FileError); -> function overload avoids default parameter ambiguity issues!
void copyFile(const Zstring& sourceFile, //throw (FileError: ErrorTargetPathMissing, ErrorFileLocked (Windows-only));
const Zstring& targetFile,
bool copyFilePermissions,
bool transactionalCopy,
CallbackCopyFile* callback); //may be NULL
//Note: it MAY happen that copyFile() leaves temp files behind, e.g. temporary network drop.
// => clean them up at an appropriate time (automatically set sync directions to delete them). They have the following ending:
const Zstring TEMP_FILE_ENDING = Zstr(".ffs_tmp");
enum SymlinkType
{
SYMLINK_TYPE_FILE,
SYMLINK_TYPE_DIR
};
void copySymlink(const Zstring& sourceLink, const Zstring& targetLink, SymlinkType type, bool copyFilePermissions); //throw (FileError)
//----------- callbacks ---------------
struct CallbackRemoveDir
{
virtual ~CallbackRemoveDir() {}
virtual void notifyDeletion(const Zstring& currentObject) = 0;
};
struct CallbackCopyFile //callback functionality
{
virtual ~CallbackCopyFile() {}
//if target is existing user needs to implement deletion: copyFile() NEVER deletes target if already existing!
//at this point full read access on source had been proven, so it's safe to delete it.
virtual void deleteTargetFile(const Zstring& targetFile) = 0; //may throw exceptions
//may throw:
//Linux: unconditionally
//Windows: first exception is swallowed, requestUiRefresh() is then called again where it may throw again and exception will propagate as expected
virtual void updateCopyStatus(UInt64 totalBytesTransferred) = 0;
};
struct CallbackMoveFile //callback functionality
{
virtual ~CallbackMoveFile() {}
virtual void requestUiRefresh(const Zstring& currentObject) = 0; //see CallbackCopyFile!
};
}
#endif //FILE_HANDLING_H_INCLUDED
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