Method

GioFileappend_to

Declaration

GFileOutputStream*
g_file_append_to (
  GFile* file,
  GFileCreateFlags flags,
  GCancellable* cancellable,
  GError** error
)

Description

Gets an output stream for appending data to the file. If the file doesn’t already exist it is created.

By default files created are generally readable by everyone, but if you pass G_FILE_CREATE_PRIVATE in flags the file will be made readable only to the current user, to the level that is supported on the target filesystem.

If cancellable is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned.

Some file systems don’t allow all file names, and may return an G_IO_ERROR_INVALID_FILENAME error. If the file is a directory the G_IO_ERROR_IS_DIRECTORY error will be returned. Other errors are possible too, and depend on what kind of filesystem the file is on.

Parameters

flags GFileCreateFlags
 

A set of GFileCreateFlags.

cancellable GCancellable
 

Optional GCancellable object, NULL to ignore.

 The argument can be NULL.
 The data is owned by the caller of the function.
error GError **
  The return location for a GError*, or NULL.

Return value

Returns: GFileOutputStream
 

A GFileOutputStream, or NULL on error. Free the returned object with g_object_unref().

 The caller of the method takes ownership of the data, and is responsible for freeing it.