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<a name="tutorial-serializer-example"></a>Serializing example code</h2></div></div></div>
<div class="example">
<a name="raptor-example-rdfcat"></a><p class="title"><b>Example 4. <code class="filename">rdfcat.c</code>: Read any RDF syntax and serialize to RDF/XML (Abbreviated)</b></p>
<div class="example-contents">
<pre class="programlisting">
#include <stdio.h>
#include <raptor.h>
/* rdfcat.c: parse any RDF syntax and serialize to RDF/XML-Abbrev */
static raptor_serializer* rdf_serializer;
void
serialize_triple(void* user_data, const raptor_statement* triple)
{
raptor_serialize_statement(rdf_serializer, triple);
}
static void
declare_namespace(void* user_data, raptor_namespace *nspace)
{
raptor_serialize_set_namespace_from_namespace(rdf_serializer, nspace);
}
int
main(int argc, char *argv[])
{
raptor_parser* rdf_parser=NULL;
unsigned char *uri_string;
raptor_uri *uri, *base_uri;
raptor_init();
uri_string=raptor_uri_filename_to_uri_string(argv[1]);
uri=raptor_new_uri(uri_string);
base_uri=raptor_uri_copy(uri);
/* Ask raptor to work out which parser to use */
rdf_parser=raptor_new_parser("guess");
raptor_set_statement_handler(rdf_parser, NULL, serialize_triple);
raptor_set_namespace_handler(rdf_parser, NULL, declare_namespace);
rdf_serializer=raptor_new_serializer("rdfxml-abbrev");
raptor_serialize_start_to_file_handle(rdf_serializer, base_uri, stdout);
raptor_parse_file(rdf_parser, uri, base_uri);
raptor_serialize_end(rdf_serializer);
raptor_free_serializer(rdf_serializer);
raptor_free_parser(rdf_parser);
raptor_free_uri(base_uri);
raptor_free_uri(uri);
raptor_free_memory(uri_string);
raptor_finish();
}
</pre>
<p>Compile it like this:
</p>
<pre class="screen">
$ gcc -o rdfcat rdfcat.c `raptor-config --cflags` `raptor-config --libs`
</pre>
<p>
and run it on an RDF file as:
</p>
<pre class="screen">
$ ./rdfcat raptor.rdf
<?xml version="1.0" encoding="utf-8"?>
<rdf:RDF xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://usefulinc.com/ns/doap#">
<rdf:Description rdf:about="">
<foaf:maker>
<foaf:Person>
<foaf:name>Dave Beckett</foaf:name>
...
</pre>
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