Re: [Vala] readline from a FileStream?

["Dov Grobgeld" <dov grobgeld gmail com>]

Ok. Thanks. I see that it is possible, though the syntax is not what I would call pretty...

...which made me thinking, would it be possible to write something that use the iterator interface for reading lines from a file? I.e. something like:

File f = File.open("path");

foreach (string s in f.readlines()) {
    print s;
}

What exactly is an iterator? An interface? Where is it defined?

Regards,
Dov

2008/6/8 Frederik <scumm_fredo gmx net>:

Dov Grobgeld schrieb:

In my efforts to of making sure that I can do simple constructs with the language I tried to read a file line by line.

Use GIO instead, it's part of the GLib namespace.

http://library.gnome.org/devel/gio/stable/

File.read () will give you a FileInputStream which you can decorate as
a DataInputStream, then you can read line by line.

------

File my_file = File.new_for_path ("myfile.data");

DataInputStream in_stream;

try {
       in_stream = new DataInputStream (my_file.read (null));
       string line;
       while (null != (line = in_stream.read_line (null, null))) {
               print (line);
       }
} catch (Error e) {
       critical (e.message);
} finally {
       in_stream.close (null);
}

------

You will have to compile with "--pkg gio-2.0". Currently you will get
some warnings about nullable parameters, since they aren't marked yet in the vapi bindings, which you can safely ignore.



Frederik

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