1 files changed, 120 insertions, 0 deletions
diff --git a/zen/file_handling.h b/zen/file_handling.h
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+++ b/zen/file_handling.h
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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 "string.h"
+#include "file_error.h"
+#include "int64.h"
+
+namespace zen
+{
+struct CallbackRemoveDir;
+struct CallbackMoveFile;
+struct CallbackCopyFile;
+
+
+bool fileExists     (const Zstring& filename); //throw()       check whether file      or symlink exists
+bool dirExists      (const Zstring& dirname);  //throw()       check whether directory or symlink exists
+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()
+
+enum ProcSymlink
+{
+    SYMLINK_DIRECT,
+    SYMLINK_FOLLOW
+};
+
+Int64 getFileTime(const Zstring& filename, ProcSymlink procSl); //throw FileError
+void setFileTime(const Zstring& filename, const Int64& modificationTime, ProcSymlink procSl); //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!
+
+struct FileAttrib
+{
+    UInt64 fileSize;
+    Int64 modificationTime; //size_t UTC compatible
+};
+
+void copyFile(const Zstring& sourceFile, //throw FileError, ErrorTargetPathMissing, ErrorFileLocked (Windows-only)
+              const Zstring& targetFile, //symlink handling: dereference source
+              bool copyFilePermissions,
+              bool transactionalCopy,
+              CallbackCopyFile* callback, //may be NULL
+              FileAttrib* sourceAttr = NULL);  //return current attributes at the time of copy
+//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");
+
+void copySymlink(const Zstring& sourceLink, const Zstring& targetLink, bool copyFilePermissions); //throw FileError
+
+
+
+
+//----------- callbacks ---------------
+struct CallbackRemoveDir
+{
+    virtual ~CallbackRemoveDir() {}
+    virtual void notifyFileDeletion(const Zstring& filename) = 0;
+    virtual void notifyDirDeletion(const Zstring& dirname) = 0;
+};
+
+
+struct CallbackCopyFile //callback functionality
+{
+    virtual ~CallbackCopyFile() {}
+
+    //if target is existing user needs to implement deletion: copyFile() NEVER deletes target if already existing!
+    //if transactionalCopy == true, full read access on source had been proven at this point, 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 should 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