rdf_parser_create( NULL );
$rdf->rdf_set_user_data( $statements );
$rdf->rdf_set_statement_handler( "my_statement_handler" );
$rdf->rdf_set_parse_type_literal_handler("my_start_parse_type_literal_handler","my_end_parse_type_literal_handler" );
$rdf->rdf_set_element_handler("my_start_element_handler", "my_end_element_handler" );
$rdf->rdf_set_character_data_handler("my_character_data_handler" );
$rdf->rdf_set_warning_handler("my_warning_handler" );
$rdf->rdf_set_base($base );
$done=false;
while(!$done)
{
$buf = fread( $input, 512 );
$done = feof($input);
if ( ! $rdf->rdf_parse( $buf, strlen($buf), feof($input) ) )
{
printf(
"**** ERROR **** : %s at line %s",
print( xml_get_error_code( $rdf->rdf_get_xml_parser() ) ),
print( xml_get_current_line_number($rdf->rdf_get_xml_parser() ) ) );
return 1;
}
}
/* close file. */
fclose( $input );
$rdf->rdf_parser_free();
printf( "Total statements: ". $statements );
/* handlers */
function my_statement_handler(
&$user_data,
$subject_type,
$subject,
$predicate,
$ordinal,
$object_type,
$object,
$xml_lang )
{
//$statements = $user_data;
++$user_data;
printf( "ordinal($ordinal) triple(" );
switch( $subject_type )
{
case RDF_SUBJECT_TYPE_URI:
printf( "\"%s\"", $subject );
break;
case RDF_SUBJECT_TYPE_DISTRIBUTED:
printf( "distributed(\"%s\")", $subject );
break;
case RDF_SUBJECT_TYPE_PREFIX:
printf( "prefix(\"%s\")", $subject );
break;
case RDF_SUBJECT_TYPE_ANONYMOUS:
printf( "anonymous(\"%s\")", $subject );
break;
}
printf( ", \"%s\", ", $predicate );
switch( $object_type )
{
case RDF_OBJECT_TYPE_RESOURCE:
printf( "\"%s\"", $object );
break;
case RDF_OBJECT_TYPE_LITERAL:
printf( "literal(\"%s\")", $object );
break;
case RDF_OBJECT_TYPE_XML:
printf( "XML" );
break;
}
printf( ")
\n" );
}
function my_start_parse_type_literal_handler(
$user_data )
{
printf( "start parse type literal
" );
}
function my_end_parse_type_literal_handler(
$user_data )
{
printf( "end parse type literal
" );
}
function my_start_element_handler(
$user_data,
$name,
$attributes )
{
printf( "start element: $name
\n" );
}
function my_end_element_handler(
$user_data,
$name )
{
printf( "end element: %s
\n", $name );
}
function my_character_data_handler(
$user_data,
$s,
$len )
{
printf( "characters: $s" );
printf( "
\n" );
}
function my_warning_handler(
$warning )
{
printf( "**** WARNING **** : %s
", $warning );
}
?>