Hello,

Here is something I cooked in 4 minutes. Here is how it works:

1. Slurp the entire file into a string, removing all white spaces since we won't need them.
2. Get the text matching "@somesthing{somestuff}"
3. Print the opening tag "<something>"
4. Match somestuff with "name:method(size);"
5. Print the xml element '<method name="name" width="size"/>'
6. Goto 4 until somestuff is depleted
7. Print closing tag "</something>"
8. Goto 2 until the file is depleted

There are other ways this can be done of course, but this is how I'd do it.

my $str = join '', map{s/\s+//g;$_}<DATA>;
while($str =~ /@(\w+){([^}]*)}/g){
    my ($int, $imp) = ($1,$2);
    print "<$int>\n";
    printf qq{\t<%s name="%s" width="%s"/>\n}, $2,$1,$3
        while $imp=~/([^:]+):([^(]+)\((\d+)\);/g;
    print "</$int>\n";
}
__DATA__
@interface {
    i : in(1);
    o : out(1);
}
@interface2 {
    b : out(1);
    a : in(1);
}
@interface3 {
    x : in(1);
    y : in(1);
}
@interface4 {
    f : out(1);
    b : out(1);
}

OUTPUT:
<interface>
    <in name="i" width="1"/>
    <out name="o" width="1"/>
</interface>
<interface2>
    <out name="b" width="1"/>
    <in name="a" width="1"/>
</interface2>
<interface3>
    <in name="x" width="1"/>
    <in name="y" width="1"/>
</interface3>
<interface4>
    <out name="f" width="1"/>
    <out name="b" width="1"/>
</interface4>
[download]

Of course, this does not handle nested interfaces; did you want that?

Hope this helps,,,

Aziz,,,