The filesystem is represented as an abstract collection of disjointed filesystem virtual root locations, each corresponding to a specific location in the device filesystem. The filesystem API exposes the hierarchies below these root locations as autonomous virtual filesystems.
Each virtual root has a string name. Each file or directory within the virtual filesystem is addressed using a fully-qualified path of the form: <root name>/<path> where <rootname> is the name of the virtual root and <path> is the path to the file or directory relative to that root.
The following virtual roots must be supported:
The file URI path is also supported. To access paths out of virtual root, for example "file:///tmp" can be used as location parameter.
The implementation must support the use of the following characters in file names:
The implementation may support additional characters in file names, depending on platform support.
The implementation may forbid the use of additional characters in file names, depending on the platform. The use of the path (component) separator "/" and null character "\x00" should not be allowed in file names.
Some other file name and path characteristics are platform-dependent, for example, maximum path length, file name length, case sensitivity, additional character support, etc. Therefore, it is recommended to avoid any dependency on aspects that cannot be supported across multiple platforms.
The encoding used for the file path should be UTF-16 (default for ECMAScript String).
Remark: In order to access files, a proper privilege has to be defined additionally:
Remark: Methods, which names end with NonBlocking are asynchronous and are executed in background in the order in which they were called. Corresponding methods without NonBlocking at the end are synchronous and will block further instructions execution, until they are finished.
For more information on the Filesystem features, see File System Guide.
Since: 1.0
typedef DOMString Path;
Since: 5.0
In methods available since Tizen 5.0, checking or accessing files or directories may be granted only through a valid path.
Paths may contain one of the supported virtual roots. The valid path pattern is explained on the top of the page.
enum FileMode { "a", "r", "rw", "rwo", "w" };
The file modes defined by this enumerator are:
Remark: rwo mode is supported since Tizen 5.0. It will not be recognized by deprecated functions.
enum FileSystemStorageType { "INTERNAL", "EXTERNAL" };
enum FileSystemStorageState { "MOUNTED", "REMOVED", "UNMOUNTABLE" };
typedef Blob Blob;
enum BaseSeekPosition { "BEGIN", "CURRENT", "END" };
[NoInterfaceObject] interface FileSystemManagerObject { readonly attribute FileSystemManager filesystem; };
Tizen implements FileSystemManagerObject;
There is a tizen.filesystem object that allows accessing the functionality of the Filesystem API.
[NoInterfaceObject] interface FileSystemManager { readonly attribute long maxNameLength; readonly attribute long maxPathLength; FileHandle openFile(Path path, FileMode openMode, optional boolean makeParents) raises(WebAPIException); void createDirectory(Path path, optional boolean makeParents, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void deleteFile(Path path, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void deleteDirectory(Path path, optional boolean recursive, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void copyFile(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void copyDirectory(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void moveFile(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void moveDirectory(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void rename(Path path, DOMString newName, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void listDirectory(Path path, ListDirectorySuccessCallback successCallback, optional ErrorCallback? errorCallback, optional FileFilter? filter) raises(WebAPIException); DOMString toURI(Path path) raises(WebAPIException); boolean isFile(Path path) raises(WebAPIException); boolean isDirectory(Path path) raises(WebAPIException); boolean pathExists(Path path) raises(WebAPIException); DOMString getDirName(DOMString path); void resolve(DOMString location, FileSuccessCallback onsuccess, optional ErrorCallback? onerror, optional FileMode? mode) raises(WebAPIException); void getStorage(DOMString label, FileSystemStorageSuccessCallback onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void listStorages(FileSystemStorageArraySuccessCallback onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); long addStorageStateChangeListener(FileSystemStorageSuccessCallback onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void removeStorageStateChangeListener(long watchId) raises(WebAPIException); };
This manager interface exposes the Filesystem base API and provides functionalities, such as determining root and default locations, resolving a given location into a file handle and registering filesystem listeners for filesystem events.
Code example:
console.log("The maximum name length is " + tizen.filesystem.maxNameLength);
Output example:
The maximum name length is 255
console.log("The maximum path length is " + tizen.filesystem.maxPathLength);
The maximum path length is 4096
openFile
FileHandle openFile(Path path, FileMode openMode, optional boolean makeParents);
If the operation succeeds, a file handle to the newly created or opened file is returned, otherwise an exception is thrown.
Following file open modes are supported:
Privilege level: public
Privilege: http://tizen.org/privilege/filesystem.read
Privilege: http://tizen.org/privilege/filesystem.write
Remark: Write permission is needed, when file is opened in modes: a, rw, rwo and w. Read permission is needed, when file is opened in modes: r, rw and rwo.
Parameters:
Return value:
Exceptions:
with error type IOError, if a file is not available for open or any other IO error occurs.
with error type NotFoundError, if the path does not point to an existing file.
with error type SecurityError, if the application does not have the privilege to call this method or the application does not have privilege to access the storage. For more information, see Storage privileges.
with error type TypeMismatchError, if any of the input parameters is not compatible with the expected type for that parameter.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); console.log("File opened for writing"); fileHandleWrite.writeString("Lorem ipsum dolor sit amet..."); console.log("String has been written to the file"); fileHandleWrite.close(); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); console.log("File opened for reading"); var fileContent = fileHandleRead.readString(); console.log("File content: " + fileContent); fileHandleRead.close();
File opened for writing String has been written to the file File opened for reading File content: Lorem ipsum dolor sit amet...
createDirectory
void createDirectory(Path path, optional boolean makeParents, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback);
Successful directory creation invokes successCallback function, if specified. In case of failure errorCallback function is invoked, if specified.
The ErrorCallback is launched with these error types:
with error type InvalidValuesError, if the path is invalid.
function errorCallback(error) { console.log("An error occurred, during directory creation: " + error.message); } function successCallback(path) { console.log("The directory has been created, path to created directory: " + path); /* Directory can now be accessed. */ } try { tizen.filesystem.createDirectory( "documents/foo_dir/bar_dir", true, successCallback, errorCallback); } catch (error) { console.log("Directory cannot be created: " + error.message); }
The directory has been created, path to created directory: documents/foo_dir/bar_dir
deleteFile
void deleteFile(Path path, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback);
Successful file deletion invokes successCallback function, if specified. In case of failure errorCallback function is invoked, if specified.
function errorCallback(error) { console.log("An error occurred, during file deletion: " + error.message); } function successCallback(path) { console.log("The file has been deleted, path to the parent of deleted file: " + path); } try { tizen.filesystem.deleteFile("documents/foo", successCallback, errorCallback); } catch (error) { console.log("File cannot be deleted: " + error.message); }
The file has been deleted, path to the parent of deleted file: documents
deleteDirectory
void deleteDirectory(Path path, optional boolean recursive, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback);
Successful directory deletion invokes successCallback function, if specified. In case of failure errorCallback function is invoked, if specified.
function errorCallback(error) { console.log("An error occurred, during directory deletion: " + error.message); } function successCallback(path) { console.log("The directory has been deleted, path to the parent of deleted directory: " + path); } try { tizen.filesystem.deleteDirectory("documents/foo_dir", true, successCallback, errorCallback); } catch (error) { console.log("Directory cannot be deleted: " + error.message); }
The directory has been deleted, path to the parent of deleted directory: documents
copyFile
void copyFile(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback);
Successful file copying invokes successCallback function, if specified. In case of failure errorCallback function is invoked, if specified.
with error type InvalidValuesError, if any of the input parameters contains an invalid value. For example, the sourcePath or the destinationPath is invalid.
function errorCallback(error) { console.log("An error occurred, during copy operation: " + error.message); } function successCallback(path) { console.log("The file has been copied, path to copied file: " + path); /* File copy can now be accessed. */ } try { tizen.filesystem.copyFile("documents/foo", "documents/bar", true, successCallback, errorCallback); } catch (error) { console.log("Copy operation cannot be performed: " + error.message); }
The file has been copied, path to copied file: documents/bar
copyDirectory
void copyDirectory(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback);
The method merges content of the directory pointed by sourcePath with content of the directory pointed by destinationPath, if exists. If the directory pointed by destinationPath does not exist, it is created.
Successful directory copying invokes successCallback function, if specified. In case of failure errorCallback function is invoked, if specified.
function errorCallback(error) { console.log("An error occurred, during copy operation: " + error.message); } function successCallback(path) { console.log("The directory has been copied, path to copied directory: " + path); /* Directory copy can now be accessed. */ } try { tizen.filesystem.copyDirectory( "documents/foo_dir", "documents/bar_dir", true, successCallback, errorCallback); } catch (error) { console.log("Copy operation cannot be performed: " + error.message); }
The directory has been copied, path to copied directory: documents/bar_dir
function errorCallback(error) { console.log("An error occurred: " + error.message); } function createFooDirCallback() { tizen.filesystem.createDirectory( "documents/foo_dir/dir_2", true, createFileCallback, errorCallback); } function listCallback(files, path) { console.log("Found inside " + path + " directory:"); for (var i = 0; i < files.length; i++) { console.log(files[i]); } } function successCallback(path) { console.log("The directory has been created and copied, path to directory: " + path); /* Directory 'documents/bar_dir' content is as below: */ /* documents/bar_dir/dir_1 */ /* documents/bar_dir/dir_2 */ /* documents/bar_dir/dir_1/file */ tizen.filesystem.listDirectory("documents/bar_dir", listCallback, errorCallback); tizen.filesystem.listDirectory("documents/bar_dir/dir_1", listCallback, errorCallback); } function createFileCallback() { tizen.filesystem.openFile("documents/foo_dir/dir_1/file", "w").close(); try { tizen.filesystem.copyDirectory( "documents/foo_dir", "documents/bar_dir", true, successCallback, errorCallback); } catch (error) { console.log("Copy operation cannot be performed: " + error.message); } } tizen.filesystem.createDirectory( "documents/foo_dir/dir_1", true, createFooDirCallback, errorCallback);
The directory has been created and copied, path to directory: documents/bar_dir Found inside documents/bar_dir directory: dir_1 dir_2 Found inside documents/bar_dir/dir_1 directory: file
moveFile
void moveFile(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback);
Successful file moving invokes successCallback function, if specified. In case of failure errorCallback function is invoked, if specified.
function errorCallback(error) { console.log("An error occurred, during move operation: " + error.message); } function successCallback(path) { console.log("The file has been moved, path to moved file: " + path); /* Moved file can now be accessed. */ } try { tizen.filesystem.moveFile( "documents/foo", "documents/foo_dir/", false, successCallback, errorCallback); } catch (error) { console.log("Move operation cannot be performed: " + error.message); }
The file has been moved, path to moved file: documents/foo_dir/foo
moveDirectory
void moveDirectory(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback);
The method merges content of the directory pointed by sourcePath with content of the directory with the same name in destinationPath, if exists.
Successful directory moving invokes successCallback function, if specified. In case of failure errorCallback function is invoked, if specified.
function errorCallback(error) { console.log("An error occurred, during move operation: " + error.message); } function successCallback(path) { console.log("The directory has been moved, path to moved directory: " + path); /* Moved directory can now be accessed. */ } try { tizen.filesystem.moveDirectory( "documents/foo_dir", "documents/bar_dir/", false, successCallback, errorCallback); } catch (error) { console.log("Move operation cannot be performed: " + error.message); }
The directory has been moved, path to moved directory: documents/bar_dir/foo_dir
rename
void rename(Path path, DOMString newName, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback);
Successful renaming invokes successCallback function, if specified. In case of failure errorCallback function is invoked, if specified.
with error type InvalidValuesError, if the path or newName is invalid.
function errorCallback(error) { console.log("An error occurred, during rename operation: " + error.message); } function successCallback(path) { console.log("The file has been renamed, path to renamed file or directory: " + path); } try { tizen.filesystem.rename("documents/foo", "bar", successCallback, errorCallback); } catch (error) { console.log("Rename operation cannot be performed: " + error.message); }
The file has been renamed, path to renamed file or directory: documents/bar
listDirectory
void listDirectory(Path path, ListDirectorySuccessCallback successCallback, optional ErrorCallback? errorCallback, optional FileFilter? filter);
Successful listing of directory content invokes successCallback function, if specified. In case of failure errorCallback function is invoked, if specified.
If the filter is passed and contains valid values, only those directories or files in the directory that match the filter criteria specified in the FileFilter interface are returned in successCallback method. If the filter is null or undefined the implementation must return the full list of files in the directory.
If the directory does not contain any files or directories, or the filter criteria do not match with any files or directories, the successCallback is invoked with an empty array.
with error type InvalidValuesError, if any of the input parameters contains an invalid value. For example, the path is invalid.
function errorCallback(error) { console.log("An error occurred, during directory listing: " + error.message); } function successCallback(files, path) { console.log("Found directories in " + path + " directory:"); for (var i = 0; i < files.length; i++) { console.log(files[i]); } } try { var start = new Date("Jan 01 2018 00:00:00"); tizen.filesystem.listDirectory("documents/", successCallback, errorCallback, {name: "foo_%", isDirectory: true, startModified: start}); } catch (error) { console.log("Directory listing cannot be performed: " + error.message); }
Found directories in documents/ directory: foo_dir_c foo_dir_b foo_dir_d foo_dir_a
toURI
DOMString toURI(Path path);
Remark: The function does not check if path exists in filesystem.
var path1 = tizen.filesystem.toURI("documents/directory/file.ext"); var path2 = tizen.filesystem.toURI("/opt/usr/home/owner/content/Documents/directory/file.ext"); var path3 = tizen.filesystem.toURI("file:///opt/usr/home/owner/content/Documents/directory/file.ext"); /* All above paths point to the same file. */ console.log(path1); console.log(path2); console.log(path3); var mmcPath = tizen.filesystem.toURI("removable_sda1/Documents/directory/file"); console.log(mmcPath);
file:///opt/usr/home/owner/content/Documents/directory/file.ext file:///opt/usr/home/owner/content/Documents/directory/file.ext file:///opt/usr/home/owner/content/Documents/directory/file.ext file:///opt/media/USBDriveA1/Documents/directory/file
isFile
boolean isFile(Path path);
with error type IOError, if any of the input/output error occurs.
with error type NotFoundError, if the path does not point to an existing file or directory.
console.log("documents/foo_file is " + (tizen.filesystem.isFile("documents/foo_file") ? "file" : "directory"));
documents/foo_file is file
isDirectory
boolean isDirectory(Path path);
console.log("documents/foo_dir is " + (tizen.filesystem.isDirectory("documents/foo_dir") ? "directory" : "file"));
documents/foo_dir is directory
pathExists
boolean pathExists(Path path);
with error type IOError, if input/output error occurs.
console.log("documents/foo " + (tizen.filesystem.pathExists("documents/foo") ? "exists" : "does not exist"));
documents/foo does not exist
getDirName
DOMString getDirName(DOMString path);
Strips trailing '/', then breaks path into two components by last path separator, returns first component.
Remark: This function does not check if path is valid or exists in filesystem.
console.log(tizen.filesystem.getDirName("/home/owner/media/Documents"));
"/home/owner/media"
resolve
Deprecated. Since 5.0
void resolve(DOMString location, FileSuccessCallback onsuccess, optional ErrorCallback? onerror, optional FileMode? mode);
A location can contain a virtual path like "documents/some_file.txt" or a file URI like "file:///my_strange_path/some_file.png". A location is not allowed to contain the "." or ".." directory entries inside its value.
The list of root locations that must be supported by a compliant implementation are:
The mode parameter specifies whether the resulting File object has read-only access (r access), read and write access (rw access), append access (a access), or write access (w access) to the root location containing directory tree. Permission for the requested access is obtained from the security framework. Once the resulting File object has access, access is inherited by any other File objects that are derived from this instance without any further reference to the security framework, as noted in descriptions of certain methods of File.
Remark: camera location is supported since Tizen 2.3. If a device does not support camera, NotSupportedError will be thrown.
with error type NotSupportedError, if this feature is not supported (e.g. in the case of "camera" virtual path if the device does not support camera), or if mode has been set to "rwo", which was introduced in tizen version 5.0
tizen.filesystem.resolve("images", function(dir) { console.log("Images are stored in " + dir.path); }, function(e) { console.log("Error: " + e.message); }, "r");
getStorage
void getStorage(DOMString label, FileSystemStorageSuccessCallback onsuccess, optional ErrorCallback? onerror);
The onsuccess method receives the data structure as an input argument containing additional information about the drive.
with error type TypeMismatchError, if the input parameter is not compatible with the expected type for that parameter.
with error type SecurityError, if the application does not have the privilege to call this method. For more information, see Storage privileges.
function onStorage(storage) { /* Do something. */ } function onStorageError(e) { console.log("Storage not found: " + e.message); } tizen.filesystem.getStorage("music", onStorage, onStorageError);
listStorages
void listStorages(FileSystemStorageArraySuccessCallback onsuccess, optional ErrorCallback? onerror);
Labels can differ depending on platform implementation.
function alertForCorruptedRemovableDrives(storages) { for (var i = 0; i < storages.length; i++) { if (storages[i].type != "EXTERNAL") continue; if (storages[i].state == "UNMOUNTABLE") console.log("External drive " + storages[i].label + " is corrupted."); } } tizen.filesystem.listStorages(alertForCorruptedRemovableDrives);
addStorageStateChangeListener
long addStorageStateChangeListener(FileSystemStorageSuccessCallback onsuccess, optional ErrorCallback? onerror);
The most common usage for this method is to watch for any additions and removals of external storages.
When executed, it returns a subscription identifier that identifies the watch operation. After returning the identifier, the watch operation is started asynchronously. The onsuccess method will be invoked every time a storage state changes. If the attempt fails, the onerror if present will be invoked with the relevant error type.
The watch operation must continue until the removeStorageStateChangeListener() method is called with the corresponding subscription identifier.
with error type TypeMismatchError, if any input parameter is not compatible with the expected type for that parameter.
with error type UnknownError, if any other error occurs.
var watchID; function onStorageStateChanged(storage) { if (storage.state == "MOUNTED") console.log("Storage " + storage.label + " was added!"); } watchID = tizen.filesystem.addStorageStateChangeListener(onStorageStateChanged);
removeStorageStateChangeListener
void removeStorageStateChangeListener(long watchId);
If the watchId argument is valid and corresponds to a subscription already in place, the watch process will be stopped and no further callbacks will be invoked. Otherwise, the method call has no effect.
var watchID; function onStorageStateChanged(storage) { if (storage.state == "MOUNTED") console.log("Storage " + storage.label + " was added!"); tizen.filesystem.removeStorageStateChangeListener(watchID); } watchID = tizen.filesystem.addStorageStateChangeListener(onStorageStateChanged);
[NoInterfaceObject] interface FileSystemStorage { readonly attribute DOMString label; readonly attribute FileSystemStorageType type; readonly attribute FileSystemStorageState state; };
To retrieve the mount point, the resolve() method should be used using the label as argument.
This attribute is used as an input for methods such as getStorage() and also used as location parameter for File.resolve() and FileSystemManager.resolve().
[NoInterfaceObject] interface FileHandle { readonly attribute Path path; long long seek(long long offset, optional BaseSeekPosition whence) raises(WebAPIException); void seekNonBlocking(long long offset, optional SeekSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional BaseSeekPosition whence) raises(WebAPIException); DOMString readString(optional long long? count, optional DOMString inputEncoding) raises(WebAPIException); void readStringNonBlocking(optional ReadStringSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional long long count, optional DOMString inputEncoding) raises(WebAPIException); long long writeString(DOMString inputString, optional DOMString outputEncoding) raises(WebAPIException); void writeStringNonBlocking(DOMString inputString, optional WriteStringSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional DOMString outputEncoding) raises(WebAPIException); Blob readBlob(optional long long size) raises(WebAPIException); void readBlobNonBlocking(optional ReadBlobSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional long long? size) raises(WebAPIException); void writeBlob(Blob blob) raises(WebAPIException); void writeBlobNonBlocking(Blob blob, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); Uint8Array readData(optional long long size) raises(WebAPIException); void readDataNonBlocking(optional ReadDataSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional long long? size) raises(WebAPIException); void writeData(Uint8Array data) raises(WebAPIException); void writeDataNonBlocking(Uint8Array data, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void flush() raises(WebAPIException); void flushNonBlocking(optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void sync() raises(WebAPIException); void syncNonBlocking(optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void close() raises(WebAPIException); void closeNonBlocking(optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); };
Each read or write operation moves position in file forwards to the end of read/written data (there is an underlying file position's indicator).
Remark: Due to multibyte UTF-8 encoding, if current file's pointer does not point to beginning of multibyte sequence (see: UTF-16, emoji), using seek() combined with UTF-8 readString() will result in string starting from valid character. Incomplete byte sequence at the beginning may be omitted. Be aware about using seek and write methods together. It can result in writing in the middle of multibyte sequence, which can lead to file with corrupted content.
seek
long long seek(long long offset, optional BaseSeekPosition whence);
Note, that current position indicator value, can be obtained by calling seek(0, "CURRENT").
with error type IOError, if seek fails or any error related to file handle occurs.
var dataToWrite = new Uint8Array([11, 21, 31, 44, 55, 66, 71, 81, 91]); /* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeData(dataToWrite); fileHandleWrite.close(); console.log("Data has been written"); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); var firstThreeBytes = fileHandleRead.readData(3); console.log("First three bytes: " + firstThreeBytes); var position = fileHandleRead.seek(-3, "END"); /* Moving to position three bytes to the end of file. */ var lastThreeBytes = fileHandleRead.readData(3); console.log("Last three bytes: " + lastThreeBytes); fileHandleRead.seek(3, "BEGIN"); /* Moving to position at third byte. */ var bytesBetween = fileHandleRead.readData(position - 3); console.log("Bytes between: " + bytesBetween); fileHandleRead.close();
Data has been written First three bytes: 11,21,31 Last three bytes: 71,81,91 Bytes between: 44,55,66
seekNonBlocking
void seekNonBlocking(long long offset, optional SeekSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional BaseSeekPosition whence);
Successful seek operation invokes onsuccess function, if specified. In case of failure onerror function is invoked, if specified.
Note, that current position indicator value, can be obtained in SeekSuccessCallback by calling seekNonBlocking(0, "CURRENT"). seekNonBlocking is executed in background and does not block further instructions.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeStringNonBlocking("Lorem ipsum dolor sit amet...", function(bytesCount) { console.log("Number of bytes written: " + bytesCount); }, function(error) { console.log(error); }); /* Moving to position 3 bytes to the end of file to alter three dots ("..."). */ fileHandleWrite.seekNonBlocking(-3, function(new_position) { console.log("Moved to position: " + new_position); }, function(error) { console.log(error); }, "END"); fileHandleWrite.writeStringNonBlocking(", consectetur adipiscing elit...", function(bytesCount) { console.log("Number of bytes written: " + bytesCount); }, function(error) { console.log(error); }); /* Moving to position 3 bytes to the end of file to alter three dots ("..."). */ fileHandleWrite.seekNonBlocking(-3, function(new_position) { console.log("Moved to position: " + new_position); }, function(error) { console.log(error); }, "END"); fileHandleWrite.writeStringNonBlocking(", sed do eiusmod...", function(bytesCount) { console.log("Number of bytes written: " + bytesCount); }, function(error) { console.log(error); }); fileHandleWrite.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); }); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); /* ReadStringSuccessCallback should be executed. */ fileHandleRead.readStringNonBlocking( function(output) { console.log("File content: " + output); }, function(error) { console.log(error); }); fileHandleRead.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); });
Number of bytes written: 29 Moved to position: 26 Number of bytes written: 32 Moved to position: 55 Number of bytes written: 19 File handle closed File content: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod... File handle closed
readString
DOMString readString(optional long long? count, optional DOMString inputEncoding);
Sets file handle position indicator at the end of read data. Reads given number of characters.
Remark: Resulting string can have length larger than count, due to possible UTF-16 surrogate pairs in it. String length in JavaScript is counted in UTF-16 encoding, so for example string containing one emoji (surrogate of two UTF-16) character will have length of two.
with error type InvalidValuesError if given count exceeds maximum value supported by the device.
with error type IOError, if read fails or any error related to file handle occurs.
with error type NotSupportedError, if the given encoding is not supported.
readStringNonBlocking
void readStringNonBlocking(optional ReadStringSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional long long count, optional DOMString inputEncoding);
Reads given number of characters. Sets file handle position indicator at the end of read data. readStringNonBlocking is executed in background and does not block further instructions.
Successful read operation invokes onsuccess function, if specified. In case of failure onerror function is invoked, if specified.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); console.log("File opened for writing"); fileHandleWrite.writeStringNonBlocking("Lorem ipsum dolor sit amet...", function(bytesCount) { console.log("Number of bytes written: " + bytesCount); }, function(error) { console.log(error); }); fileHandleWrite.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); }); /* Opening file for read - below code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); /* ReadStringSuccessCallback should be executed. */ fileHandleRead.readStringNonBlocking( function(output) { console.log("File content: " + output); }, function(error) { console.log(error); }); fileHandleRead.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); });
File opened for writing Number of bytes written: 29 File handle closed File content: Lorem ipsum dolor sit amet... File handle closed
writeString
long long writeString(DOMString inputString, optional DOMString outputEncoding);
Sets file handle position indicator at the end of written data.
writeStringNonBlocking
void writeStringNonBlocking(DOMString inputString, optional WriteStringSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional DOMString outputEncoding);
Sets file handle position indicator at the end of written data. writeStringNonBlocking is executed in background and does not block further instructions.
Successful write operation invokes successCallback function, if specified. In case of failure onerror function is invoked, if specified.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeStringNonBlocking("Lorem ipsum dolor sit amet...", function(bytesCount) { console.log("Number of bytes written: " + bytesCount); }, function(error) { console.log(error); }); fileHandleWrite.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); }); /* Opening file for read - below code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); /* ReadStringSuccessCallback should be executed. */ fileHandleRead.readStringNonBlocking( function(output) { console.log("File content: " + output); }, function(error) { console.log(error); }); fileHandleRead.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); });
Number of bytes written: 29 File handle closed File content: Lorem ipsum dolor sit amet... File handle closed
readBlob
Blob readBlob(optional long long size);
Sets file handle position indicator at the end of read data.
with error type InvalidValuesError if given size exceeds maximum value supported by the device.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); var b = new Blob(["Lorem ipsum dolor sit amet..."], {type: "text/plain"}); fileHandleWrite.writeBlob(b); fileHandleWrite.close(); console.log("Blob content has been written to file"); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); var fileContentInBlob = fileHandleRead.readBlob(); fileHandleRead.close(); const reader = new FileReader(); /* Event fires after the blob has been read/loaded. */ reader.onloadend = function(content) { const text = content.srcElement.result; console.log("File content: " + text); }; /* Starts reading the blob as text. */ reader.readAsText(fileContentInBlob);
Blob content has been written to file File content: Lorem ipsum dolor sit amet...
readBlobNonBlocking
void readBlobNonBlocking(optional ReadBlobSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional long long? size);
Sets file handle position indicator at the end of read data. readBlobNonBlocking is executed in background and does not block further instructions.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); var b = new Blob(["Lorem ipsum dolor sit amet..."], {type: "text/plain"}); fileHandleWrite.writeBlobNonBlocking(b, function() { console.log("Blob content has been written to file"); }, function(error) { console.log(error); }); fileHandleWrite.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); }); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); /* Creation of a reader capable of extracting Blob content. */ const reader = new FileReader(); /* Event fires after the blob has been read/loaded. */ reader.onloadend = function(content) { const text = content.srcElement.result; console.log("File content: " + text); }; function readBlobCallback(fileContentInBlob) { reader.readAsText(fileContentInBlob); } /* readBlobCallback should be executed. */ fileHandleRead.readBlobNonBlocking(readBlobCallback, function(error) { console.log(error); }); fileHandleRead.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); });
Blob content has been written to file File handle closed File handle closed File content: Lorem ipsum dolor sit amet...
writeBlob
void writeBlob(Blob blob);
with error type IOError, if write fails or any error related to file handle occurs.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); var b = new Blob(["Lorem ipsum dolor sit amet..."], {type: "text/plain"}); fileHandleWrite.writeBlob(b); fileHandleWrite.close(); console.log("Blob content has been written to file"); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); var fileContentInBlob = fileHandleRead.readBlob(); fileHandleRead.close(); console.log("File content has been read from file"); const reader = new FileReader(); /* Event fires after the blob has been read/loaded. */ reader.onloadend = function(content) { const text = content.srcElement.result; console.log("File content: " + text); }; /* Starts reading the blob as text. */ reader.readAsText(fileContentInBlob);
Blob content has been written to file File content has been read from file File content: Lorem ipsum dolor sit amet...
writeBlobNonBlocking
void writeBlobNonBlocking(Blob blob, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror);
Sets file handle position indicator at the end of written data. writeBlobNonBlocking is executed in background and does not block further instructions.
Successful write operation invokes onsuccess function, if specified. In case of failure onerror function is invoked, if specified.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); var b = new Blob(["Lorem ipsum dolor sit amet..."], {type: "text/plain"}); fileHandleWrite.writeBlobNonBlocking(b, function() { console.log("Blob content has been written to file"); }, function(error) { console.log(error); }); fileHandleWrite.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); }); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); /* Creation of a reader capable of extracting Blob content. */ const reader = new FileReader(); /* Event fires after the blob has been read/loaded. */ reader.onloadend = function(content) { const text = content.srcElement.result; console.log("File content: " + text); }; function readBlobCallback(fileContentInBlob) { reader.readAsText(fileContentInBlob); } /* readBlobCallback should be executed. */ fileHandleRead.readBlobNonBlocking(readBlobCallback); fileHandleRead.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); });
readData
Uint8Array readData(optional long long size);
Can be used in combination with atob() or btoa() functions. Sets file handle position indicator at the end of read data.
var dataToWrite = new Uint8Array([11, 21, 31, 71, 81, 91]); /* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeData(dataToWrite); fileHandleWrite.close(); console.log("Data has been written"); /* Opening file for read - below code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); var fileContentInUint8Array = fileHandleRead.readData(); fileHandleRead.close(); console.log("Data read from file: " + fileContentInUint8Array);
Data has been written Data read from file: 11,21,31,71,81,91
readDataNonBlocking
void readDataNonBlocking(optional ReadDataSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional long long? size);
Can be used in combination with atob() or btoa() functions. Sets file handle position indicator at the end of read data. readDataNonBlocking is executed in background and does not block further instructions.
var dataToWrite = new Uint8Array([11, 21, 31, 71, 81, 91]); /* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeDataNonBlocking(dataToWrite, function(dataRead) { console.log("Write done"); }, function(error) { console.log(error); }); fileHandleWrite.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); }); /* Opening file for read - below code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); fileHandleRead.readDataNonBlocking( function(dataRead) { console.log("Data read from file: " + dataRead); }, function(error) { console.log(error); }); fileHandleRead.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); });
Write done File handle closed Data read from file: 11,21,31,71,81,91 File handle closed
writeData
void writeData(Uint8Array data);
Can be used in combination with atob() or btoa() functions. Sets file handle position indicator at the end of written data.
writeDataNonBlocking
void writeDataNonBlocking(Uint8Array data, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror);
Can be used in combination with atob() or btoa() functions. Sets file handle position indicator at the end of written data. writeDataNonBlocking is executed in background and does not block further instructions.
flush
void flush();
For file handles with permission to write, flush writes any changes made to file content to underlying buffer.
Flush does not ensure that data is written on storage device, it only synchronizes RAM with file descriptor. To ensure storage synchronization use sync, close or their asynchronous equivalent methods, which guarantee such synchronization.
with error type IOError, if flush fails or any error related to file handle occurs.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); fileHandleWrite.writeString("Lorem ipsum dolor sit amet..."); console.log("Data has been written to file"); /* Calling flush() ensures that content has been written to file descriptor and can be read by any */ /* process. */ fileHandleWrite.flush(); console.log("Data has been flushed to system file buffer and now can be read"); var fileContent = fileHandleRead.readString(); console.log("Read data: " + fileContent); fileHandleWrite.close(); fileHandleRead.close();
Data has been written to file Data has been flushed to system file buffer and now can be read Read data: Lorem ipsum dolor sit amet...
flushNonBlocking
void flushNonBlocking(optional SuccessCallback? onsuccess, optional ErrorCallback? onerror);
Successful flushing invokes onsuccess function, if specified. In case of failure onerror function is invoked, if specified.
This method is asynchronous. Its execution will occur in background and after all previously commissioned background jobs will finish.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeStringNonBlocking("Lorem ipsum dolor sit amet...", function(bytesCount) { console.log("Number of bytes written: " + bytesCount); }, function(error) { console.log(error); }); /* Calling flushNonBlocking() ensures that content will be written to file descriptor */ /* and can be read by any process. */ fileHandleWrite.flushNonBlocking( function() { console.log("Data has been flushed to system file buffer and now can be read"); }, function(error) { console.log(error); }); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); fileHandleRead.readStringNonBlocking( function(output) { console.log("File content: " + output); }, function(error) { console.log(error); }); fileHandleWrite.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); }); fileHandleRead.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); });
Number of bytes written: 29 Data has been flushed to system file buffer and now can be read File content: Lorem ipsum dolor sit amet... File handle closed File handle closed
sync
void sync();
The sync function is intended to force a physical write of data from the buffer cache and to assure that after a system crash or other failure that all data up to the time of the sync() call is recorded on the disk.
with error type IOError, if sync fails or any error related to file handle occurs.
var dataToWrite = new Uint8Array([11, 21, 31, 71, 81, 91]); /* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeData(dataToWrite); /* Calling sync() forces a physical write of data, so it is safe */ /* even after system crash or power shut down. */ fileHandleWrite.sync(); console.log("Data has been synced"); /* close() method provides the same functionality as sync() and ends access to file. */ fileHandleWrite.close();
Data has been synced
syncNonBlocking
void syncNonBlocking(optional SuccessCallback? onsuccess, optional ErrorCallback? onerror);
The syncNonBlocking function is intended to force a physical write of data from the buffer cache and to assure that after a system crash or other failure that all data up to the time of the syncNonBlocking() execution is recorded on the disk.
Successful syncing invokes onsuccess function, if specified. In case of failure onerror function is invoked, if specified.
var dataToWrite = new Uint8Array([11, 21, 31, 71, 81, 91]); /* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeDataNonBlocking(dataToWrite, function(dataRead) { console.log("Write done"); }, function(error) { console.log(error); }); /* Calling syncNonBlocking() will force a physical write of data, so it will be safe */ /* even after system crash or power shut down. */ fileHandleWrite.syncNonBlocking( function() { console.log("Data has been synced"); }, function(error) { console.log(error); }); /* close() method provides the same functionality as sync() and ends access to file. */ fileHandleWrite.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); });
Write done Data has been synced File handle closed
close
void close();
Closes the given file stream. Closing file guarantees writing changes made to FileHandle to the storage device. Further operations on this file handle are not allowed.
Remark: This method is synchronous. If any asynchronous method was called before close, close will block further instructions until all background jobs finish execution. Note, that if file handle functions are put into any callbacks and this callback was not yet called, synchronous close will wait only for already ordered background jobs to finish, preventing successful execution of any further operations on closed file handle.
with error type IOError, if close fails or any error related to file handle occurs.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeString("Lorem ipsum dolor sit amet..."); fileHandleWrite.close(); console.log("String has been written to the file"); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); var positionOfFileEnd = fileHandleRead.seek(0, "END"); console.log("Seek operation done. Position of file end: " + positionOfFileEnd); fileHandleRead.close(); console.log("File is now closed");
String has been written to the file Seek operation done. Position of file end: 29 File is now closed
closeNonBlocking
void closeNonBlocking(optional SuccessCallback? onsuccess, optional ErrorCallback? onerror);
Successful closing invokes onsuccess function, if specified. In case of failure onerror function is invoked, if specified.
/* Opening file for write - file is created if not exists, */ /* otherwise existing file is truncated. */ var fileHandleWrite = tizen.filesystem.openFile("documents/file", "w"); fileHandleWrite.writeStringNonBlocking("Lorem ipsum dolor sit amet...", function(bytesCount) { console.log("Number of bytes written: " + bytesCount); }, function(error) { console.log(error); }); fileHandleWrite.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); }); /* Opening file for read - this code assumes that there is */ /* a file named "file" in documents directory. */ var fileHandleRead = tizen.filesystem.openFile("documents/file", "r"); var positionOfFileEnd = fileHandleRead.seekNonBlocking(0, function(new_position) { console.log("Moved to position: " + new_position); }, function(error) { console.log(error); }, "END"); fileHandleRead.closeNonBlocking( function() { console.log("File handle closed"); }, function(error) { console.log(error); });
Number of bytes written: 29 File handle closed Moved to position: 29 File handle closed
[NoInterfaceObject] interface File { readonly attribute File? parent; readonly attribute boolean readOnly; readonly attribute boolean isFile; readonly attribute boolean isDirectory; readonly attribute Date? created; readonly attribute Date? modified; readonly attribute DOMString path; readonly attribute DOMString name; readonly attribute DOMString fullPath; readonly attribute unsigned long long fileSize; readonly attribute long length; DOMString toURI() raises(WebAPIException); void listFiles(FileArraySuccessCallback onsuccess, optional ErrorCallback? onerror, optional FileFilter? filter) raises(WebAPIException); void openStream(FileMode mode, FileStreamSuccessCallback onsuccess, optional ErrorCallback? onerror, optional DOMString? encoding) raises(WebAPIException); void readAsText(FileStringSuccessCallback onsuccess, optional ErrorCallback? onerror, optional DOMString? encoding) raises(WebAPIException); void copyTo(DOMString originFilePath, DOMString destinationFilePath, boolean overwrite, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void moveTo(DOMString originFilePath, DOMString destinationFilePath, boolean overwrite, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); File createDirectory(DOMString dirPath) raises(WebAPIException); File createFile(DOMString relativeFilePath) raises(WebAPIException); File resolve(DOMString filePath) raises(WebAPIException); void deleteDirectory(DOMString directoryPath, boolean recursive, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void deleteFile(DOMString filePath, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); };
The file object permissions for the file object location and tree rooted at that location depend upon the mode defined in the resolve method. When a File object creates a child File object, the new File object inherits its access rights from the parent object without any reference to the security framework, as noted in certain methods of File.
A file handle represents either a file or a directory:
A file can be opened for both read and write operations, using a FileStream handle. A list of files and sub-directories can be obtained from a directory and a resolve method exists to resolve files or sub-directories more conveniently than processing directory listings.
A file handle representing a file can be opened for I/O operations, such as reading and writing.
A file handle representing a directory can be used for listing all files and directories rooted as the file handle location.
function onsuccess(files) { for (var i = 0; i < files.length; i++) { /* Alerts each name of dir's content. */ console.log(files[i].name); } } function onerror(error) { console.log( "The error " + error.message + " occurred when listing the files in the selected folder"); } /* List directory content. */ dir.listFiles(onsuccess, onerror);
This attribute is set to null if there is no parent directory. This also implies that this directory represents a root location.
/* List directory content. */ dir.listFiles(onsuccess, onerror); function onsuccess(files) { for (var i = 0; i < files.length; i++) { /* Prints the file parent, must contain the */ /* same value for all the files in the loop. */ console.log("All the files should have the same parent " + files[i].parent); } } function onerror(error) { console.log( "The error " + error.message + " occurred when listing the files in the selected folder"); }
This attribute is set to:
This attribute represents the actual state of a file or directory in the filesystem. Its value is not affected by the mode used in FileSystemManager.resolve() that was used to create the File object from which this File object was obtained.
/* Lists directory content. */ dir.listFiles(onsuccess, onerror); function onsuccess(files) { for (var i = 0; i < files.length; i++) { if (files[i].readOnly) console.log("Cannot write to file " + files[i].name); else console.log("Can write to file " + files[i].name); } } function onerror(error) { console.log( "The error " + error.message + " occurred when listing the files in the selected folder"); }
This attribute can have the following values:
This timestamp is equivalent to the timestamp when a call to createFile() succeeds.
If the platform does not support this attribute, it will be null.
It is unspecified and platform-dependent if the creation timestamp changes when a file is moved.
Opening a file for reading does not change the modification timestamp.
It is unspecified and platform-dependent if the modified timestamp changes when a file is moved.
console.log(file.modified); /* Displays the modification timestamp. */
It begins with the name of the root containing the file, followed by the path, including the directory containing the file, but excluding the file name.
Except in some special cases of the File representing the root itself, the last character is always "/".
For example, if a file is located at music/ramones/volume1/RockawayBeach.mp3, the path is music/ramones/volume1/.
For example, if a directory is located at music/ramones/volume1, the path is music/ramones/.
For the virtual roots, the path is same as the name of the virtual root. For example, if the root is music, then the path is music. If the root is documents, then the path is documents.
console.log(file.path); /* Must be music/ if the file is music/foo.mp3. */
This is the name of this file, excluding the root name and any other path components.
For example, if a file is located at music/ramones/volume1/RockawayBeach.mp3, the name is "RockawayBeach.mp3".
For example, if a directory is located at music/ramones/volume1, the name is be "volume1".
For the special case of the root itself, the name is an empty string.
/* Must be foo.mp3 if the file path is music/foo.mp3. */ console.log(file.name);
It begins with the name of the root containing the file, and including the name of the file or directory itself.
For instance, if the RockawayBeach.mp3 file is located at music/ramones/volume1/, then the fullPath is music/ramones/volume1/RockawayBeach.mp3.
For a directory, if the volume1 directory is located at music/ramones/, then the fullPath is music/ramones/volume1.
For the special case of the root itself, if the root is music, then the fullPath is music.
The fullPath is always equal to path + name.
/* Must be music/track1.mp3 if the file is music/track1.mp3. */ console.log(file.fullPath);
If an attempt to read this attribute for a directory is made, undefined is returned. To retrieve the number of files and directories contained in the directory, use the length attribute.
/* Displays the file size. */ console.log(file.fileSize);
If an attempt to read this attribute for a file is made, undefined is returned. To retrieve the size of a file, use the fileSize attribute.
/* "3" if the directory contains two files and one sub-directory. */ console.log(file.length);
DOMString toURI();
If that URI corresponds to any of the public virtual roots (that is images, videos, music, documents and downloads) the URI must be globally unique and could be used by any widget.
If that URI corresponds to a file located in any a widget's private areas (such as wgt-package, wgt-private, wgt-private-tmp), the generated URI must be unique for that file and for the widget making the request (such as including some derived from the widget ID in the URI). These URIs must not be accessible to other widgets, apart from the one invoking this method.
with error type UnknownError, if any other error occurred.
tizen.filesystem.resolve("music/ramones/RockawayBeach.mp3", function(file) { var audio = new Audio(file.toURI()); audio.play(); console.log(file.toURI()); });
listFiles
void listFiles(FileArraySuccessCallback onsuccess, optional ErrorCallback? onerror, optional FileFilter? filter);
The list of files is passed as a File[] in onsuccess() and contains directories and files. However, the directories "." and ".." must not be returned. Each File object that is part of the array must inherit all the access rights (that is, one of the values in FileMode) from the File object in which this method is invoked.
If the filter is passed and contains valid values, only those directories and files in the directory that match the filter criteria specified in the FileFilter interface must be returned in the onsuccess() method. If no filter is passed, the filter is null or undefined, or the filter contains invalid values, the implementation must return the full list of files in the directory.
If the directory does not contain any files or directories, or the filter criteria do not match any files or directories, the onsuccess() is invoked with an empty array.
function onsuccess(files) { console.log("There are " + files.length + " in the selected folder"); } function onerror(error) { console.log( "The error " + error.message + " occurred when listing the files in the selected folder"); } tizen.filesystem.resolve("documents", function(dir) { dir.listFiles(onsuccess, onerror); }, function(e) { console.log("Error " + e.message); }, "r");
openStream
void openStream(FileMode mode, FileStreamSuccessCallback onsuccess, optional ErrorCallback? onerror, optional DOMString? encoding);
This operation is performed asynchronously. If the file is opened successfully, the onsuccess() method is invoked with a FileStream that can be used for reading and writing the file, depending on the mode. The returned FileStream instance includes a file pointer, which represents the current position in the file. The file pointer, by default, is at the start of the file, except in the case of opening a file in append ("a") mode, in which case the file pointer points to the end of the file.
var documentsDir; function onsuccess(files) { for (var i = 0; i < files.length; i++) { console.log("File Name is " + files[i].name); /* Displays file name. */ } var testFile = documentsDir.createFile("test.txt"); if (testFile != null) { testFile.openStream("w", function(fs) { fs.write("HelloWorld"); fs.close(); }, function(e) { console.log("Error " + e.message); }, "UTF-8"); } } function onerror(error) { console.log( "The error " + error.message + " occurred when listing the files in the selected folder"); } tizen.filesystem.resolve("documents", function(dir) { documentsDir = dir; dir.listFiles(onsuccess, onerror); }, function(e) { console.log("Error " + e.message); }, "rw");
readAsText
void readAsText(FileStringSuccessCallback onsuccess, optional ErrorCallback? onerror, optional DOMString? encoding);
If the operation is successfully executed, the onsuccess() method is invoked and a DOMString is passed as input parameter that represents the file content in the format determined by the encoding parameter.
var documentsDir; function onsuccess(files) { for (var i = 0; i < files.length; i++) { console.log("File Name is " + files[i].name); /* Displays file name. */ if (files[i].isDirectory == false) { files[i].readAsText( function(str) { console.log("The file content " + str); }, function(e) { console.log("Error " + e.message); }, "UTF-8"); } } } function onerror(error) { console.log( "The error " + error.message + " occurred when listing the files in the selected folder"); } tizen.filesystem.resolve("documents", function(dir) { documentsDir = dir; dir.listFiles(onsuccess, onerror); }, function(e) { console.log("Error " + e.message); }, "rw");
copyTo
void copyTo(DOMString originFilePath, DOMString destinationFilePath, boolean overwrite, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror);
The copy of the file or directory identified by the originFilePath parameter must be created in the path passed in the destinationFilePath parameter.
The file or directory to copy must be under the Directory from which the method is invoked, otherwise the operation must not be performed.
If the copy is performed successfully, the onsuccess() method is invoked.
var documentsDir; function onsuccess(files) { for (var i = 0; i < files.length; i++) { if (files[i].isDirectory == false) { documentsDir.copyTo(files[i].fullPath, "images/backup/" + files[i].name, false, function() { console.log("File copied"); }); } } } function onerror(error) { console.log( "The error " + error.message + " occurred when listing the files in the selected folder"); } tizen.filesystem.resolve("documents", function(dir) { documentsDir = dir; dir.listFiles(onsuccess, onerror); }, function(e) { console.log("Error " + e.message); }, "rw");
moveTo
void moveTo(DOMString originFilePath, DOMString destinationFilePath, boolean overwrite, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror);
The file or directory identified by the originFilePath parameter is moved to the path passed in the destinationFilePath parameter.
The file to move must be under the directory from which the method is invoked, else the operation can not be performed.
If the file or directory is moved successfully, the onsuccess() method is invoked.
var documentsDir; function onsuccess(files) { for (var i = 0; i < files.length; i++) { if (files[i].isDirectory == false) { documentsDir.moveTo( files[i].fullPath, "images/newFolder/" + files[i].name, false, function() { console.log("File moved"); }); } } } function onerror(error) { console.log( "The error " + error.message + " occurred during listing the files in the selected folder"); } tizen.filesystem.resolve("documents", function(dir) { documentsDir = dir; dir.listFiles(onsuccess, onerror); }, function(e) { console.log("Error " + e.message); }, "rw");
File createDirectory(DOMString dirPath);
A new directory will be created relative to the current directory that this operation is performed on. The implementation will attempt to create all necessary sub-directories specified in the dirPath, as well. The use of "." or ".." in path components is not supported.
This operation can only be performed on file handles that represent directories (that is, isDirectory == true).
If the directory is successfully created, it will be returned.
In case the directory cannot be created, an error must be thrown with the appropriate error type.
with error type IOError, if the dirPath already exists, if the file in which the createDirectory() method is invoked is a file (and not a directory).
with error type InvalidValuesError, if the dirPath does not contain a valid path.
with error type TypeMismatchError, if the input parameter is not compatible with the expected type.
var dir; /* Directory object obtained from filesystem API. */ var newDir = dir.createDirectory("newDir"); var anotherNewDir = dir.createDirectory("newDir1/subNewDir1");
createFile
File createFile(DOMString relativeFilePath);
The use of "." or ".." in path components is not supported. This operation can only be performed on file handlers that represent a directory (that is, isDirectory == true).
If the file is successfully created, a file handle must be returned by this method.
In case the file cannot be created, an error must be thrown with the appropriate error type.
with error type IOError, if relativeFilePath already exists, if the File in which the createFile() method is invoked is a file (not a directory).
with error type InvalidValuesError, if relativeFilePath contains an invalid value.
var newFile = dir.createFile("newFilePath");
File resolve(DOMString filePath);
The filePath is not allowed to contain the "." or ".." directory entries inside its value.
The encoding of file paths is UTF-8.
with error type InvalidValuesError, if the file path contains an invalid value.
with error type IOError, if the method is executed in a File object that does not represent a directory (that is, isDirectory attribute is false).
with error type NotFoundError, if a file does not exist for the passed file path.
var file; /* Resolves helloWorld.doc file that is located in the */ /* documents root location. */ tizen.filesystem.resolve("documents", function(dir) { file = dir.resolve("helloWorld.doc"); }, function(e) { console.log("Error " + e.message); }, "rw");
void deleteDirectory(DOMString directoryPath, boolean recursive, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror);
This method attempts to asynchronously delete a directory or directory tree under the current directory.
If the recursive parameter is set to true, all the directories and files under the specified directory must be deleted. If the recursive parameter is set to false, the directory is only deleted if it is empty, otherwise an IOError error type will be passed in onerror().
If the deletion is performed successfully, the onsuccess() is invoked.
var documentsDir; function onsuccess(files) { for (var i = 0; i < files.length; i++) { if (files[i].isDirectory) { documentsDir.deleteDirectory(files[i].fullPath, false, function() { console.log("Directory Deleted"); }, function(e) { console.log("Error " + e.message); }); } } } function onerror(error) { console.log( "The error " + error.message + " occurred when listing the files in the selected folder"); } tizen.filesystem.resolve("documents", function(dir) { documentsDir = dir; dir.listFiles(onsuccess, onerror); }, function(e) { console.log("Error " + e.message); }, "rw");
void deleteFile(DOMString filePath, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror);
var documentsDir; function onsuccess(files) { for (var i = 0; i < files.length; i++) { if (!files[i].isDirectory) { documentsDir.deleteFile(files[i].fullPath, function() { console.log("File Deleted"); }, function(e) { console.log("Error " + e.message); }); } } } function onerror(error) { console.log( "The error " + error.message + " occurred when listing the files in the selected folder"); } tizen.filesystem.resolve("documents", function(dir) { documentsDir = dir; dir.listFiles(onsuccess, onerror); }, function(e) { console.log("Error " + e.message); }, "rw");
dictionary FileFilter { DOMString name; boolean isFile; boolean isDirectory; Date startModified; Date endModified; Date startCreated; Date endCreated; };
When this dictionary is passed to a method, the result-set of the method will only contain file item entries that match the attribute values of the filter.
A file item only matches the FileFilter object if all of the defined filter's attribute values match all of the file item's attributes (only matching values other than undefined or null). This is similar to a SQL's "AND" operation.
An attribute of the file entry matches the FileFilter attribute value in accordance with the following rules:
Files that have a name that corresponds with this attribute (either exactly or with the specified wildcards) match this filtering criteria.
Files with modified date later than this attribute or equal to it match the filtering criteria.
Files with modified date earlier than this attribute or equal to it match the filtering criteria.
Files with created date later than this attribute or equal to it match the filtering criteria.
Files with created date earlier than this attribute or equal to it match the filtering criteria.
[NoInterfaceObject] interface FileStream { readonly attribute boolean eof; attribute long position; readonly attribute long bytesAvailable; void close(); DOMString read(long charCount) raises(WebAPIException); octet[] readBytes(long byteCount) raises(WebAPIException); DOMString readBase64(long byteCount) raises(WebAPIException); void write(DOMString stringData) raises(WebAPIException); void writeBytes(octet[] byteData) raises(WebAPIException); void writeBase64(DOMString base64Data) raises(WebAPIException); };
A series of read/write methods are available that permit both binary and text to be processed.
Once a file stream is closed, any operation attempt made on this stream results in a standard JavaScript error.
The read/write operations in this interface do not throw any security exceptions as the access rights are expected to be granted through the initial resolve() method or through the openStream() method of the File interface. Therefore, all actions performed on a successfully resolved File and FileStream are expected to succeed. This avoids successive asynchronous calls and may potentially increase application for a user.
If set to true, this attribute indicates that the file pointer is at the end of the file.
If set to false, this attribute indicates that the file pointer is not at the end of the file and so it is anywhere within the file.
if (stream.eof) { /* File has been read completely. */ }
The stream position is an offset of bytes from the start of the file stream. When invoking an operation that reads or writes from the stream, the operation will take place from the byte defined by this position attribute. If the read or write operation is successful, the position of the stream is advanced by the number of bytes read or written. If the read/write operation is not successful, the position of the stream is unchanged.
console.log(stream.position); /* Displays current stream position. */ /* Alters current stream position to the begin of the file, */ /* like seek() in C. */ stream.position = 0;
The number of bytes available for reading is the maximum amount of bytes that can be read in the next read operation. It corresponds to the number of bytes available after the file pointer denoted by the position attribute.
-1 if EOF is true.
console.log(stream.bytesAvailable); /* Displays the available bytes to be read. */
Flushes any pending buffered writes and closes the File. Always succeeds. Note that pending writes might not succeed.
stream.close(); /* Closes this stream, no subsequent access to stream allowed. */
read
DOMString read(long charCount);
with error type IOError, if a read error occurs, such as the bytes in the stream cannot be decoded with the encoding in use.
with error type InvalidValuesError, if any of the input parameters contains an invalid value.
var text = stream.read(file.fileSize); stream.close();
readBytes
octet[] readBytes(long byteCount);
with error type IOError, if a read error occurs.
/* Reads up to 256 bytes from the stream. */ var raw = stream.readBytes(256); for (var i = 0; i < raw.length; i++) { /* raw[i] contains the i-th byte of the current data chunk. */ }
readBase64
DOMString readBase64(long byteCount);
/* Reads up to 256 bytes from the stream. */ var base64 = stream.readBase64(256);
write
void write(DOMString stringData);
with error type IOError, if a write error occurs.
var text = "Hello world"; stream.write(text);
writeBytes
void writeBytes(octet[] byteData);
var bytes = input.readBytes(256); /* Writes the bytes read from input to output. */ output.writeBytes(bytes);
writeBase64
void writeBase64(DOMString base64Data);
with error type IOError, if an error occurs during writeBase64.
with error type InvalidValuesError, if the input parameter contains an invalid value (e.g. the base64Data input parameter is not a valid Base64 sequence).
var base64 = input.readBase64(256); /* Writes the base64 data read from input to output. */ output.writeBase64(base64);
[Callback=FunctionOnly, NoInterfaceObject] interface FileSuccessCallback { void onsuccess(File file); };
It is used in asynchronous operations, such as FileSystemManager.resolve(), copying, moving and deleting files.
onsuccess
void onsuccess(File file);
[Callback=FunctionOnly, NoInterfaceObject] interface FileSystemStorageArraySuccessCallback { void onsuccess(FileSystemStorage[] storages); };
It is used in asynchronous operations, such as FileSystemManager.listStorages().
void onsuccess(FileSystemStorage[] storages);
[Callback=FunctionOnly, NoInterfaceObject] interface FileSystemStorageSuccessCallback { void onsuccess(FileSystemStorage storage); };
It is used in asynchronous operations, such as FileSystemManager.getStorage() and FileSystemManager.addStorageStateChangeListener().
void onsuccess(FileSystemStorage storage);
[Callback=FunctionOnly, NoInterfaceObject] interface PathSuccessCallback { void onsuccess(Path path); };
It is used in asynchronous operations of the FileSystemManager interface.
void onsuccess(Path path);
[Callback=FunctionOnly, NoInterfaceObject] interface SeekSuccessCallback { void onsuccess(long long position); };
It is used in asynchronous operation FileHandle.seekNonBlocking().
void onsuccess(long long position);
[Callback=FunctionOnly, NoInterfaceObject] interface ReadStringSuccessCallback { void onsuccess(DOMString string); };
It is used in asynchronous operation FileHandle.readStringNonBlocking().
void onsuccess(DOMString string);
[Callback=FunctionOnly, NoInterfaceObject] interface WriteStringSuccessCallback { void onsuccess(long long bytesCount); };
It is used in asynchronous operation FileHandle.writeStringNonBlocking().
void onsuccess(long long bytesCount);
[Callback=FunctionOnly, NoInterfaceObject] interface ReadBlobSuccessCallback { void onsuccess(Blob blob); };
It is used in asynchronous operation FileHandle.readBlobNonBlocking().
void onsuccess(Blob blob);
[Callback=FunctionOnly, NoInterfaceObject] interface ReadDataSuccessCallback { void onsuccess(Uint8Array data); };
It is used in asynchronous operation FileHandle.readDataNonBlocking().
void onsuccess(Uint8Array data);
[Callback=FunctionOnly, NoInterfaceObject] interface FileStringSuccessCallback { void onsuccess(DOMString fileStr); };
It is used in asynchronous operation File.readAsText().
void onsuccess(DOMString fileStr);
[Callback=FunctionOnly, NoInterfaceObject] interface FileStreamSuccessCallback { void onsuccess(FileStream filestream); };
It is used in asynchronous operation File.openStream().
void onsuccess(FileStream filestream);
[Callback=FunctionOnly, NoInterfaceObject] interface ListDirectorySuccessCallback { void onsuccess(DOMString[] names, Path path); };
This callback interface specifies a success callback with a function taking an array of strings as input argument. It is used in asynchronous operation FileSystemManager.listDirectory().
void onsuccess(DOMString[] names, Path path);
[Callback=FunctionOnly, NoInterfaceObject] interface FileArraySuccessCallback { void onsuccess(File[] files); };
This callback interface specifies a success callback with a function taking an array of File objects as input argument. It is used in asynchronous methods, such as File.listFiles().
void onsuccess(File[] files);
module Filesystem { typedef DOMString Path; typedef Blob Blob; enum FileMode { "a", "r", "rw", "rwo", "w" }; enum FileSystemStorageType { "INTERNAL", "EXTERNAL" }; enum FileSystemStorageState { "MOUNTED", "REMOVED", "UNMOUNTABLE" }; enum BaseSeekPosition { "BEGIN", "CURRENT", "END" }; dictionary FileFilter { DOMString name; boolean isFile; boolean isDirectory; Date startModified; Date endModified; Date startCreated; Date endCreated; }; Tizen implements FileSystemManagerObject; [NoInterfaceObject] interface FileSystemManagerObject { readonly attribute FileSystemManager filesystem; }; [NoInterfaceObject] interface FileSystemManager { readonly attribute long maxNameLength; readonly attribute long maxPathLength; FileHandle openFile(Path path, FileMode openMode, optional boolean makeParents) raises(WebAPIException); void createDirectory(Path path, optional boolean makeParents, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void deleteFile(Path path, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void deleteDirectory(Path path, optional boolean recursive, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void copyFile(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void copyDirectory(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void moveFile(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void moveDirectory(Path sourcePath, Path destinationPath, optional boolean overwrite, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void rename(Path path, DOMString newName, optional PathSuccessCallback? successCallback, optional ErrorCallback? errorCallback) raises(WebAPIException); void listDirectory(Path path, ListDirectorySuccessCallback successCallback, optional ErrorCallback? errorCallback, optional FileFilter? filter) raises(WebAPIException); DOMString toURI(Path path) raises(WebAPIException); boolean isFile(Path path) raises(WebAPIException); boolean isDirectory(Path path) raises(WebAPIException); boolean pathExists(Path path) raises(WebAPIException); DOMString getDirName(DOMString path); void getStorage(DOMString label, FileSystemStorageSuccessCallback onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void listStorages(FileSystemStorageArraySuccessCallback onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); long addStorageStateChangeListener(FileSystemStorageSuccessCallback onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void removeStorageStateChangeListener(long watchId) raises(WebAPIException); }; [NoInterfaceObject] interface FileSystemStorage { readonly attribute DOMString label; readonly attribute FileSystemStorageType type; readonly attribute FileSystemStorageState state; }; [NoInterfaceObject] interface FileHandle { readonly attribute Path path; long long seek(long long offset, optional BaseSeekPosition whence) raises(WebAPIException); void seekNonBlocking(long long offset, optional SeekSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional BaseSeekPosition whence) raises(WebAPIException); DOMString readString(optional long long? count, optional DOMString inputEncoding) raises(WebAPIException); void readStringNonBlocking(optional ReadStringSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional long long count, optional DOMString inputEncoding) raises(WebAPIException); long long writeString(DOMString inputString, optional DOMString outputEncoding) raises(WebAPIException); void writeStringNonBlocking(DOMString inputString, optional WriteStringSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional DOMString outputEncoding) raises(WebAPIException); Blob readBlob(optional long long size) raises(WebAPIException); void readBlobNonBlocking(optional ReadBlobSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional long long? size) raises(WebAPIException); void writeBlob(Blob blob) raises(WebAPIException); void writeBlobNonBlocking(Blob blob, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); Uint8Array readData(optional long long size) raises(WebAPIException); void readDataNonBlocking(optional ReadDataSuccessCallback? onsuccess, optional ErrorCallback? onerror, optional long long? size) raises(WebAPIException); void writeData(Uint8Array data) raises(WebAPIException); void writeDataNonBlocking(Uint8Array data, optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void flush() raises(WebAPIException); void flushNonBlocking(optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void sync() raises(WebAPIException); void syncNonBlocking(optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); void close() raises(WebAPIException); void closeNonBlocking(optional SuccessCallback? onsuccess, optional ErrorCallback? onerror) raises(WebAPIException); }; [Callback=FunctionOnly, NoInterfaceObject] interface FileSystemStorageArraySuccessCallback { void onsuccess(FileSystemStorage[] storages); }; [Callback=FunctionOnly, NoInterfaceObject] interface FileSystemStorageSuccessCallback { void onsuccess(FileSystemStorage storage); }; [Callback=FunctionOnly, NoInterfaceObject] interface PathSuccessCallback { void onsuccess(Path path); }; [Callback=FunctionOnly, NoInterfaceObject] interface SeekSuccessCallback { void onsuccess(long long position); }; [Callback=FunctionOnly, NoInterfaceObject] interface ReadStringSuccessCallback { void onsuccess(DOMString string); }; [Callback=FunctionOnly, NoInterfaceObject] interface WriteStringSuccessCallback { void onsuccess(long long bytesCount); }; [Callback=FunctionOnly, NoInterfaceObject] interface ReadBlobSuccessCallback { void onsuccess(Blob blob); }; [Callback=FunctionOnly, NoInterfaceObject] interface ReadDataSuccessCallback { void onsuccess(Uint8Array data); }; [Callback=FunctionOnly, NoInterfaceObject] interface ListDirectorySuccessCallback { void onsuccess(DOMString[] names, Path path); }; };