As far as I can see, glib only has support for reading a whole file at a
time, and not line by line. I'm lacking the equivalent of:
#python
for line in f:
# do something
or
#perl
while(<>) {
# do something
}
I think it would be nice if the standard library would contain a readline()
function that returns a string, something like:
FileStream f = fopen(...);
while(!f.eof()) {
string s = f.readline();
# do something with s
}
Would a patch be accepted?
Regards,
Dov
2008/6/8 George Farris <[EMAIL PROTECTED]>:
> On Sat, 2008-06-07 at 22:57 +0300, Dov Grobgeld wrote:
> > Hello,
> >
> > I've just played around with vala for the first time tonight, and I
> > find it very intriguing! I've been previously using gob for most of my
> > C coding, but I think that I will try to move to vala as much as
> > possible, as soon as I feel comfortable enough with it.
> >
> > 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. The problem is that
> > fgets() is mapped quite shallowly as follows:
> >
> > public weak string gets (string s, int size);
> >
> > Thus I need to make sure that s has the requested size before calling
> > gets. This is what I eventually came up with:
> >
> > using GLib;
> >
> > int main(string[] args) {
> > if (args.length < 2) {
> > stderr.printf("Need name of file!\n");
> > return -1;
> > }
> >
> > var f = FileStream.open(args[1],"r");
> > int n = 1000;
> > string s = " ".ndup(n);
> > int line = 0;
> >
> > while(true) {
> > f.gets(s, n);
> > if (f.eof())
> > break;
> > stdout.printf("Line %d: %s", line++, s);
> > }
> > return 0;
> > }
> >
> > Is there a more elegant way than by using ndup(n)?
> >
> > Thanks again!
> > Dov
>
> Take a look at Glib, which has Vala bindings. There is support for
> reading and writing files in there I believe.
>
> http://library.gnome.org/devel/glib/2.16/
>
>
>
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>
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