char* rdfa_resolve_curie(
rdfacontext* context, const char* uri, curieparse_t mode)
{
char* rval = NULL;
curie_t ctype = rdfa_get_curie_type(uri);
if(!uri)
return NULL;
if(ctype == CURIE_TYPE_INVALID)
{
rval = NULL;
}
else if((ctype == CURIE_TYPE_IRI_OR_UNSAFE) &&
((mode == CURIE_PARSE_HREF_SRC) ||
(context->rdfa_version == RDFA_VERSION_1_0 &&
mode == CURIE_PARSE_ABOUT_RESOURCE)))
{
/* If we are parsing something that can take either a CURIE or a
* URI, and the type is either IRI or UNSAFE, assume that it is
* an IRI */
rval = rdfa_resolve_uri(context, uri);
}
/*
* Check to see if the value is a term.
*/
if(ctype == CURIE_TYPE_IRI_OR_UNSAFE && mode == CURIE_PARSE_PROPERTY)
{
const char* term_iri;
term_iri = (const char*)rdfa_get_mapping(context->term_mappings, uri);
if(term_iri != NULL)
{
rval = strdup(term_iri);
}
else if(context->default_vocabulary == NULL && strstr(uri, ":") == NULL)
{
/* Generate the processor warning if this is a missing term */
#define FORMAT_1 "The use of the '%s' term was unrecognized by the RDFa processor because it is not a valid term for the current Host Language."
#ifdef LIBRDFA_IN_RAPTOR
raptor_parser_warning((raptor_parser*)context->callback_data,
FORMAT_1, uri);
#else
char msg[1024];
snprintf(msg, 1024, FORMAT_1, uri);
rdfa_processor_triples(context, RDFA_PROCESSOR_WARNING, msg);
#endif
}
}
/* if we are processing a safe CURIE OR
* if we are parsing an unsafe CURIE that is an @type_of,
* @datatype, @property, @rel, or @rev attribute, treat the curie
* as not an IRI, but an unsafe CURIE */
if(rval == NULL && ((ctype == CURIE_TYPE_SAFE) ||
((ctype == CURIE_TYPE_IRI_OR_UNSAFE) &&
((mode == CURIE_PARSE_INSTANCEOF_DATATYPE) ||
(mode == CURIE_PARSE_PROPERTY) ||
(mode == CURIE_PARSE_RELREV) ||
(context->rdfa_version == RDFA_VERSION_1_1 &&
mode == CURIE_PARSE_ABOUT_RESOURCE)))))
{
char* working_copy = NULL;
char* wcptr = NULL;
char* prefix = NULL;
char* curie_reference = NULL;
const char* expanded_prefix = NULL;
size_t uri_len = strlen(uri);
working_copy = (char*)malloc(uri_len + 1);
memcpy(working_copy, uri, uri_len + 1);/*rdfa_replace_string(working_copy, uri);*/
/* if this is a safe CURIE, chop off the beginning and the end */
if(ctype == CURIE_TYPE_SAFE)
{
prefix = strtok_r(working_copy, "[:]", &wcptr);
if(wcptr)
curie_reference = strtok_r(NULL, "[]", &wcptr);
}
else if(ctype == CURIE_TYPE_IRI_OR_UNSAFE)
{
prefix = strtok_r(working_copy, ":", &wcptr);
if(wcptr)
curie_reference = strtok_r(NULL, "", &wcptr);
}
/* fully resolve the prefix and get its length */
/* if a colon was found, but no prefix, use the XHTML vocabulary URI
* as the expanded prefix */
if((uri[0] == ':') || (strcmp(uri, "[:]") == 0))
{
expanded_prefix = XHTML_VOCAB_URI;
curie_reference = prefix;
prefix = NULL;
}
else if(uri[0] == ':')
{
/* FIXME: This looks like a bug - don't know why this code is
* in here. I think it's for the case where ":next" is
* specified, but the code's not checking that -- manu */
expanded_prefix = context->base;
curie_reference = prefix;
prefix = NULL;
}
else if(prefix != NULL)
{
if((mode != CURIE_PARSE_PROPERTY) &&
(mode != CURIE_PARSE_RELREV) &&
strcmp(prefix, "_") == 0)
{
/* if the prefix specifies this as a blank node, then we
* use the blank node prefix */
expanded_prefix = "_";
}
else
{
/* if the prefix was defined, get it from the set of URI mappings. */
#ifdef LIBRDFA_IN_RAPTOR
if(!strcmp(prefix, "xml"))
{
expanded_prefix = RAPTOR_GOOD_CAST(const char*, raptor_xml_namespace_uri);
}
else
{
raptor_namespace *nspace;
raptor_uri* ns_uri;
nspace = raptor_namespaces_find_namespace(&context->sax2->namespaces,
(const unsigned char*)prefix,
(int)strlen(prefix));
if(nspace) {
ns_uri = raptor_namespace_get_uri(nspace);
if(ns_uri)
expanded_prefix = (const char*)raptor_uri_as_string(ns_uri);
}
}
#else
expanded_prefix =
rdfa_get_mapping(context->uri_mappings, prefix);
/* Generate the processor warning if the prefix was not found */
if(expanded_prefix == NULL && strstr(uri, ":") != NULL &&
strstr(uri, "://") == NULL)
{
#define FORMAT_2 "The '%s' prefix was not found. You may want to check that it is declared before it is used, or that it is a valid prefix string."
#ifdef LIBRDFA_IN_RAPTOR
raptor_parser_warning((raptor_parser*)context->callback_data,
FORMAT_2, prefix);
#else
char msg[1024];
snprintf(msg, 1024, FORMAT_2, prefix);
rdfa_processor_triples(context, RDFA_PROCESSOR_WARNING, msg);
#endif
}
#endif
}
char* rdfa_resolve_curie(
rdfacontext* context, const char* uri, curieparse_t mode)
{
char* rval = NULL;
curie_t ctype = rdfa_get_curie_type(uri);
if(ctype == CURIE_TYPE_INVALID)
{
rval = NULL;
}
else if((ctype == CURIE_TYPE_IRI_OR_UNSAFE) &&
((mode == CURIE_PARSE_HREF_SRC) ||
(mode == CURIE_PARSE_ABOUT_RESOURCE)))
{
// If we are parsing something that can take either a CURIE or a
// URI, and the type is either IRI or UNSAFE, assume that it is
// an IRI
rval = rdfa_resolve_uri(context, uri);
}
// if we are processing a safe CURIE OR
// if we are parsing an unsafe CURIE that is an @type_of,
// @datatype, @property, @rel, or @rev attribute, treat the curie
// as not an IRI, but an unsafe CURIE
if((ctype == CURIE_TYPE_SAFE) ||
((ctype == CURIE_TYPE_IRI_OR_UNSAFE) &&
((mode == CURIE_PARSE_INSTANCEOF_DATATYPE) ||
(mode == CURIE_PARSE_PROPERTY) ||
(mode == CURIE_PARSE_RELREV))))
{
char* working_copy = NULL;
char* wcptr = NULL;
char* prefix = NULL;
char* curie_reference = NULL;
const char* expanded_prefix = NULL;
working_copy = (char*)malloc(strlen(uri) + 1);
strcpy(working_copy, uri);//rdfa_replace_string(working_copy, uri);
// if this is a safe CURIE, chop off the beginning and the end
if(ctype == CURIE_TYPE_SAFE)
{
prefix = strtok_r(working_copy, "[:]", &wcptr);
if(wcptr)
curie_reference = strtok_r(NULL, "[:]", &wcptr);
}
else if(ctype == CURIE_TYPE_IRI_OR_UNSAFE)
{
prefix = strtok_r(working_copy, ":", &wcptr);
if(wcptr)
curie_reference = strtok_r(NULL, ":", &wcptr);
}
// fully resolve the prefix and get it's length
// if a colon was found, but no prefix, use the XHTML vocabulary URI
// as the expanded prefix
if((uri[0] == ':') || (strcmp(uri, "[:]") == 0))
{
expanded_prefix = XHTML_VOCAB_URI;
curie_reference = prefix;
prefix = NULL;
}
else if(uri[0] == ':')
{
// FIXME: This looks like a bug - don't know why this code is
// in here. I think it's for the case where ":next" is
// specified, but the code's not checking that -- manu
expanded_prefix = context->base;
curie_reference = prefix;
prefix = NULL;
}
else if(prefix != NULL)
{
if(strcmp(prefix, "_") == 0)
{
// if the prefix specifies this as a blank node, then we
// use the blank node prefix
expanded_prefix = "_";
}
//else if(strcmp(prefix, "rdf") == 0)
//{
// expanded_prefix = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
//}
else
{
// if the prefix was defined, get it from the set of URI mappings.
#ifdef LIBRDFA_IN_RAPTOR
raptor_namespace *nspace;
raptor_uri* ns_uri;
nspace = raptor_namespaces_find_namespace(&context->sax2->namespaces,
(const unsigned char*)prefix, strlen(prefix));
if(nspace) {
ns_uri = raptor_namespace_get_uri(nspace);
if(ns_uri)
expanded_prefix = (const char*)raptor_uri_as_string(ns_uri);
}
#else
expanded_prefix =
rdfa_get_mapping(context->uri_mappings, prefix);
#endif
}
}
if((expanded_prefix != NULL) && (curie_reference != NULL))
{
// if the expanded prefix and the reference exist, generate the
// full IRI.
if(strcmp(expanded_prefix, "_") == 0)
{
rval = rdfa_join_string("_:", curie_reference);
}
else
{
rval = rdfa_join_string(expanded_prefix, curie_reference);
}
}
else if((expanded_prefix != NULL) && (expanded_prefix[0] != '_') &&
(curie_reference == NULL))
{
// if the expanded prefix exists, but the reference is null,
// generate the CURIE because a reference-less CURIE is still
// valid
rval = rdfa_join_string(expanded_prefix, "");
}
free(working_copy);
}
// if we're NULL at this point, the CURIE might be the special
// unnamed bnode specified by _:
if((rval == NULL) &&
((strcmp(uri, "[_:]") == 0) ||
(strcmp(uri, "_:") == 0)))
{
if(context->underscore_colon_bnode_name == NULL)
{
context->underscore_colon_bnode_name = rdfa_create_bnode(context);
}
rval = rdfa_replace_string(rval, context->underscore_colon_bnode_name);
}
// even though a reference-only CURIE is valid, it does not
// generate a triple in XHTML+RDFa. If we're NULL at this point,
// the given value wasn't valid in XHTML+RDFa.
return rval;
}