XML::Handler::Sample(3) User Contributed Perl Documentation XML::Handler::Sample(3)NAME
XML::Handler::Sample - a trivial PerlSAX handler
SYNOPSIS
use XML::Parser::PerlSAX;
use XML::Handler::Sample;
$my_handler = XML::Handler::Sample->new;
XML::Parser::PerlSAX->new->parse(Source => { SystemId => 'REC-xml-19980210.xml' },
Handler => $my_handler);
DESCRIPTION
"XML::Handler::Sample" is a trivial PerlSAX handler that prints out the name of each event it receives. The source for
"XML::Handler::Sample" lists all the currently known PerlSAX handler methods.
"XML::Handler::Sample" is intended for Perl module authors who wish to look at example PerlSAX handler modules. "XML::Handler::Sample" can
be used as a template for writing your own PerlSAX handler modules. "XML::Handler::Sample" is in the Public Domain and can be used for any
purpose without restriction.
AUTHOR
Ken MacLeod, ken@bitsko.slc.ut.us
SEE ALSO perl(1), PerlSAX.pod(3)perl v5.16.3 2003-10-21 XML::Handler::Sample(3)
Check Out this Related Man Page
SAXT(3pm) User Contributed Perl Documentation SAXT(3pm)NAME
XML::Filter::SAXT - Replicates SAX events to several SAX event handlers
SYNOPSIS
$saxt = new XML::Filter::SAXT ( { Handler => $out1 },
{ DocumentHandler => $out2 },
{ DTDHandler => $out3,
Handler => $out4
}
);
$perlsax = new XML::Parser::PerlSAX ( Handler => $saxt );
$perlsax->parse ( [OPTIONS] );
DESCRIPTION
SAXT is like the Unix 'tee' command in that it multiplexes the input stream to several output streams. In this case, the input stream is a
PerlSAX event producer (like XML::Parser::PerlSAX) and the output streams are PerlSAX handlers or filters.
The SAXT constructor takes a list of hash references. Each hash specifies an output handler. The hash keys can be: DocumentHandler,
DTDHandler, EntityResolver or Handler, where Handler is a combination of the previous three and acts as the default handler. E.g. if
DocumentHandler is not specified, it will try to use Handler.
EXAMPLE
In this example we use XML::Parser::PerlSAX to parse an XML file and to invoke the PerlSAX callbacks of our SAXT object. The SAXT object
then forwards the callbacks to XML::Checker, which will 'die' if it encounters an error, and to XML::Handler::BuildDOM, which will store
the XML in an XML::DOM::Document.
use XML::Parser::PerlSAX;
use XML::Filter::SAXT;
use XML::Handler::BuildDOM;
use XML::Checker;
my $checker = new XML::Checker;
my $builder = new XML::Handler::BuildDOM (KeepCDATA => 1);
my $tee = new XML::Filter::SAXT ( { Handler => $checker },
{ Handler => $builder } );
my $parser = new XML::Parser::PerlSAX (Handler => $tee);
eval
{
# This is how you set the error handler for XML::Checker
local $XML::Checker::FAIL = &my_fail;
my $dom_document = $parser->parsefile ("file.xml");
... your code here ...
};
if ($@)
{
# Either XML::Parser::PerlSAX threw an exception (bad XML)
# or XML::Checker found an error and my_fail died.
... your error handling code here ...
}
# XML::Checker error handler
sub my_fail
{
my $code = shift;
die XML::Checker::error_string ($code, @_)
if $code < 200; # warnings and info messages are >= 200
}
CAVEATS
This is still alpha software. Package names and interfaces are subject to change.
AUTHOR
Enno Dersken is the original author.
Send bug reports, hints, tips, suggestions to T.J. Mather at <tjmather@tjmather.com>.
perl v5.10.1 2001-09-03 SAXT(3pm)
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