Anyone got any ideas? The only thing I can think of currently is opening the
file for read, then closing the file, then re-opening for write. It's horrible
and hacky, but right now I'm out of suggestions.
Mark
--- In flexcoders@yahoogroups.com, "skuteboarding" <m...@...> wrote:
>
> Hi,
>
> I'm trying to read an xml file into memory, add a node, then write over the
> original file.
>
> The following code works just fine (it clears the file, then writes the new
> bytes over the top):
>
> var stream:FileStream = new FileStream();
> stream.open(file, FileMode.UPDATE);
> stream.position = 0;
> stream.truncate();
> stream.writeUTFBytes("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
> stream.writeUTFBytes(File.lineEnding);
> stream.writeUTFBytes(xml.toXMLString());
> stream.close();
>
> However, if I attempt to perform a read after the file has opened, the
> position / truncate calls don't work:
>
> var stream:FileStream = new FileStream();
> stream.open(file, FileMode.UPDATE);
>
> var xml:XML = XML(stream.readUTFBytes(stream.bytesAvailable));
>
> // Modify xml here
>
> stream.position = 0;
> stream.truncate();
> stream.writeUTFBytes("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
> stream.writeUTFBytes(File.lineEnding);
> stream.writeUTFBytes(xml.toXMLString());
> stream.close();
>
> Does anyone have any ideas why this doesn't work?
>
> If you examine the stream, in the first code, after the call to truncate(),
> the bytesAvailable property will read 0. But in the second code, the
> bytesAvailable won't change (it will show the current file size).
>
> Any ideas?
>
> Mark
>
