[sword-devel] Perl Sword string comparison problem

[Mark Morgan]

Peter,

I don't use Perl, but it seems to me that you are assigning $doc_text to
$tmp and thus throwing away the new SWBuf you created.  From then on, $tmp
and $doc_text will refer to the same thing.  The string they contain will
never be different.


God bless.


Mark Morgan

On Fri, Sep 4, 2015 at 6:12 AM, Peter von Kaehne <refdoc at gmx.net> wrote:

> I am trying to take a string, pack it into a SWBuf, take a copy of it
> into another SWBuf, run the copy through a stripfilter and then compare
> the string content of the outcome with the initial string:
>
>
>    my $tmp = new Sword::SWBuf();
>    $tmp=$doc_text; # where $doc_text is a SWBuf, obtained earlier.
>    $manager->filterText($filter, $tmp);
>
>    if ($tmp->c_str() ne $doc_text->c_str()) {
>       print "GlobalOptionFilter=".%diacritics{$filter}."\n";
>    }
>    else { print "NotPresent=".%diacritics{$filter}."\n";
>    }
>
> For reasons which are beyond me, it always runs down the "else" path.
>
> Despite the string in $doc_text having plenty of the stuff which I want
> to filter.
>
> Despite if I strew liberally print statements the two strings clearly
> being different, i.e. "unfiltered" vs "filtered"
>
> Despite if I compare by hand two strings the "ne" operator doing its
> job just fine.  "a" ne "b" or indeed "unfiltered" ne "filtered"
>
> My forehead is bloodied by the frequency I have hit it against the
> wall.
>
> Suggestions?
>
> Thanks
>
> Peter
>
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