Re: [Vala] Vala 0.11.6 How do I copy a file using GInputStream and GOutputStream?

[pancake <pancake youterm com>]

Yes. It is a bug. Please report it :)

Btw.. When are the opened bugs going to be reviewed and commited? I can count many ready-to-commit bugreports.

On 02/03/2011, at 12:21, Graham Whelan <gawhelan gmail com> wrote:

> On 1 March 2011 19:58, Graham Whelan <gawhelan gmail com> wrote:
> > On 1 March 2011 18:29, Jürg Billeter <j bitron ch> wrote:
> > > On Tue, 2011-03-01 at 18:21 +0000, Graham Whelan wrote:
> > > > I'm trying to copy a file using GLib.InputStream and GLib.OutputStream
> > > > but the copied file ends up corrupted.
> > > >
> > > > Sample code:
> > > >
> > > > uint8 buffer[4096];
> > > > size_t read;
> > > > while (true) {
> > > >       read = input.read (buffer);
> > > >       if (read > 0) {
> > > >               output.write (buffer);
> > >
> > > This should work with slicing:
> > >
> > >    output.write (buffer[0:read]);
> > >
> > > Jürg
> >
> > Thanks for the quick response.
> >
> > I've just tried your suggestion with valac 0.11.5 and 0.11.6 but it
> > doesn't work. Looking at the generated C code, Vala is still passing
> > the full length of the array and not the length of the slice.
> >
> > So:
> > output.write (buffer[0:read]);
> >
> > becomes:
> > g_output_stream_write ((GOutputStream*) output, buffer + 0, (gsize)
> > 4096, NULL, &_inner_error_);
> >
> > Graham
>
> I've managed to get this to work by using a variable rather than
> fixed-size array.
> The sample code becomes:
>        
> uint8[] buffer = new uint8[4096];
> size_t read;
> while(true) {
>    read = input.read(buffer);
>    if (read > 0) {
>        output.write (buffer[0:read]);
>    } else {
>        break;
>    }
> }
>
> With a fixed-size array the slice operation doesn't work. Is this a bug?
>
> Thanks for the help,
>
> Graham
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