On Thursday 17 June 2010 10:47:39 Chris Datfung wrote:
> I want to manipulate various href links in the server response. I read in
> the server response as follows:
>
> sub handler
> {
> my $f = shift;
> unless ($f->ctx){
> while ($f->read(my $Buffer, BUFF_LEN)) {
> if ($Buffer =~ m/Logout/){
> $Buffer =~ s/href="(.*?\?.*?)"/href="$1\&NewParameter=$Value"/g;
> $f->print($Buffer);
> }
> return Apache2::Const::OK;
> }
> }
> }
>
> The BUFF_LEN constant is set to 1024. I want to run the regex against the
> entire server response. I tried adding a $CompleteBuffer .= $Buffer inside
> the while loop and moving the $f->print($Buffer) statement out of that
> loop, but still ended up with multiple copies of the same text within
> $Buffer. What is the correct what to access the entire server response in
> a single variable? Any pointers to examples of this are greatly
> appreciated.
>
Here is what I do sometimes:
sub Filter : method FilterRequestHandler {
my ($I, $f, $bb)=...@_;
my $ctx=$f->ctx;
unless( $ctx ) {
unless( $f->r->status==Apache2::Const::HTTP_OK ) {
$f->remove;
return Apache2::Const::DECLINED;
}
$f->ctx($ctx=[]);
$f->r->headers_out->unset('Content-Length');
}
return Apache2::Const::OK
unless ModPerl2::Tools::Filter::read_bb($bb, $ctx);
# If the code reaches this point @$ctx contains all the chunks of output
# from the original response. That is
# join '', @$ctx
# is the response.
Now, you can process the response and then create one or more content buckets
plus 1 eos bucket and pass all of them to the next filter:
my $ba=$f->c->bucket_alloc;
$bb->cleanup; # reuse the input brigade
$bb->insert_tail(APR::Bucket->new($ba, $_)) for (@content);
$bb->insert_tail(APR::Bucket::eos_create($ba));
$rc=$f->next->pass_brigade($bb);
return $rc==APR::Const::SUCCESS ? Apache2::Const::OK : $rc;
}
See my 2 ¢ to the conversation back on Apr/15 2010 about "accessing
environment variables set by other modules". You were the initiator of the
thread.
Torsten Förtsch
--
Need professional modperl support? Hire me! (http://foertsch.name)
Like fantasy? http://kabatinte.net
