replace_readwrite_async
Description:
public virtual async FileIOStream replace_readwrite_async (string? etag, bool make_backup, FileCreateFlags flags, int io_priority = DEFAULT, Cancellable? cancellable = null) throws Error
Asynchronously overwrites the file in read-write mode, replacing the contents, possibly creating a backup copy of the file first.
For more details, see replace_readwrite which is the synchronous version of this call.
When the operation is finished, callback
will be called. You can then call
replace_readwrite_async.end to get the result of the operation.
Example: Get a stream to override a file in r/w, async:
public static int main (string[] args) {
if (args.length != 2) {
print ("%s FILE\n", args[0]);
return 0;
}
MainLoop loop = new MainLoop ();
File file = File.new_for_commandline_arg (args[1]);
file.replace_readwrite_async.begin (null, false, FileCreateFlags.NONE, Priority.DEFAULT, null, (obj, res) => {
try {
FileIOStream iostream = file.replace_readwrite_async.end (res);
OutputStream ostream = iostream.output_stream;
DataOutputStream dostream = new DataOutputStream (ostream);
dostream.put_string ("new-line\n");
} catch (Error e) {
print ("Error: %s\n", e.message);
}
loop.quit ();
});
loop.run ();
return 0;
}
valac --pkg gio-2.0 GLib.File.replace_readwrite_async.vala
Parameters:
this |
input File |
etag |
an [entity tag]( |
make_backup |
true if a backup should be created |
flags |
a set of FileCreateFlags |
io_priority |
the I/O priority of the request |
cancellable |
optional Cancellable object, null to ignore |
callback |
a TaskReadyCallback to call when the request is satisfied |
user_data |
the data to pass to callback function |