Re: [Vala] [Fwd: Binary File is not seekable ?!?]

[raum no-log org]

from http://valadoc.org/#!api=gio-2.0/GLib.Seekable
seek on FileIOStream run without error but seeking with DataInputStream
throw an error.... but none on Windows... :-?
I will try to change my source code to test.

code sample.vala
public static int main (string[] args) {
        File file = File.new_for_path ("my-test.txt");

        try {
                FileIOStream ios =  file.open_readwrite();

        // no error
                assert (ios.can_seek ());
        // no error
                ios.seek (11, SeekType.SET);

                InputStream @is = ios.input_stream;
                DataInputStream dis = new DataInputStream (@is);

                string line;
                while ((line = dis.read_line ()) != null) {
                        stdout.puts (line);
                        stdout.putc ('\n');
                }

                // display error
                dis.seek(0,SeekType.SET);

        } catch (Error e) {
                stdout.printf ("Error: %s\n", e.message);
        }

        return 0;
}


OUTPUT

$ cat my-test.txt
My first line
My second line

$ valac --pkg gio-2.0 sample.vala
cyriac arche:~/src$ ./sample
ne
My second line

(process:29159): GLib-GIO-CRITICAL **: g_seekable_seek: assertion
`G_IS_SEEKABLE (seekable)' failed

> I've downloaded source tarball of Vala 0.22, compiled and install it but
> no effect... :-/
>
> I was wondering if it was not a system problem. But I can not admit that I
> would have to reinstall linux to make it work. I'll search for reinstall
> only glib....
>
> Thanks
>
> Raum
>
> > Seems like it is problem with glib2 package, try to reinstall it, I
> > can't
> > say how it exactly called in Ubuntu, because I'm not an Ubuntu user.
> >                                                                                                            
> >                                                                                                            
> >                    From:
> > raum no-log orgSent:
> > ??????,
> > 26
> > ??????
> > 2013
> > ?.
> > 22:17To:
> > vala-list gnome orgSubject:
> > Re:
> > [Vala]
> > [Fwd:
> > Binary
> > File
> > is
> > not
> > seekable
> > ?!?]
> > Hello,
> >
> > Let me explain. I want to create a tool for Linux and Windows.
> >
> > I need to open a binary file and seek to a position... With MingW on
> > Windows, it runs without error but on Linux, I've a "seekable" error
> > with
> > the same code, same compile options, etc.
> >
> > I dont understand why...
> >
> > ##### Code
> >
> >  public void main() {
> >     try {
> >        File file = File.new_for_path ("test.pcap");
> >        DataInputStream dis = new DataInputStream (file.read ());
> >        stdout.printf("seekable: %s\n",(dis.can_seek())?"true":"false");
> >     } catch (Error e) {
> >     }
> >  }
> >
> > ##### WINDOWS 32bits / MingW32
> >
> > $ valac --pkg gio-2.0 seek.vala
> > $ ./seek
> > seekable: true
> >
> > ###### LINUX -Ubuntu 13.03- 64 bits
> >
> > $ valac --pkg gio-2.0 seek.vala
> > $ ./seek
> > (process:8097): GLib-GIO-CRITICAL **: g_seekable_can_seek: assertion
> > `G_IS_SEEKABLE (seekable)' failed
> > seekable: false
> >
> >
> > Do you have an idea why it's running on Windows but not on Linux ?
> >
> > Thanks
> >
> > Raum
> > _______________________________________________
> > vala-list mailing list
> >
> > https://mail.gnome.org/mailman/listinfo/vala-list
>
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