I'm glad that I was able to help! I had wondered if you were going to run into encoding issues, and I had thought about warning you... but I figured that was a different piece of the puzzle.
So far, I've actually only written to in-memory file handles (my example above was the first time reading from one), and then used the bytes from the scalar variable, but I think all my data is ASCII so far. On Thu, Apr 19, 2018 at 2:54 PM, Andy Kohler <akohler...@gmail.com> wrote: > Many thanks to David, Bruce and Karl for suggestions - all were helpful! > > David and Bruce both reminded me that scalar variables can be treated as > file handles: > open(my $fh, "<", \$xml) or die "Couldn't open file handle: $!"; > my $batch = MARC::Batch->new( 'XML', $fh ); > > I had tried this without luck earlier. David kindly sent a complete > example - which worked in isolation, but failed in the context of my > program with a frustrating "Couldn't open file handle: Invalid argument" > until I realized I'd forgotten the essential "use warnings"... which gave > me the frustrating but much more helpful: > > "Strings with code points over 0xFF may not be mapped into in-memory file > handles" > > A moment with Google found pages like this: > https://bugzilla.redhat.com/show_bug.cgi?id=1048324 > > which helped me realize that the XML I was retrieving from WorldCat really > was encoded as UTF-8, which I hadn't accounted for so far. > > Wrapping my retrieved XML like so: > utf8::encode($contents); > > has resolved the problem, so far at least - have to test more with records > with diacritics to be sure. But this helps me move forward. > > Thanks again! --Andy > > > On Wed, Apr 18, 2018 at 4:25 PM, Andy Kohler <akohler...@gmail.com> wrote: > >> Hi - >> >> I'm pulling records from the WorldCat Search API in MARCXML, and need to >> convert them to binary MARC for further evaluation, which I'll do via >> MARC::Record. >> >> Problem: Converting from MARCXML via MARC::File::XML seems to require >> reading the records from a file. I've already got the XML stored in a >> variable, retrieved via LWP::Simple->get(). >> >> Do I have to write the XML to a file, then read it in again to convert >> it? Or am I just missing something obvious? >> >> I've tried things like: >> $xml = get($api_call); # also verified that $xml now contains MARCXML for >> 1 or more records >> my $batch = MARC::File::XML->in($xml); >> while (my $record = $batch->next()) { >> print $record; >> } >> but I get the error: Can't call method "next" on an undefined value >> >> Thanks --Andy >> >> >
