Non-SPARQL versions of slv2_port_get_value_by_qname, slv2_port_get_value_by_qname_i18n, and svn_port_get_value.

Gracefully handle invalid predicates in slv2_plugin_get_value_by_qname.
2 queries left...


git-svn-id: http://svn.drobilla.net/lad/trunk/slv2@2866 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 35 insertions, 1 deletions

diff --git a/src/util.c b/src/util.c
index 92811c8..9fee529 100644
--- a/src/util.c
+++ b/src/util.c
@@ -22,8 +22,9 @@
 #include <string.h>
 #include <assert.h>
 #include <stdarg.h>
-#include "slv2/util.h"
 
+#include "slv2/util.h"
+#include "slv2_internal.h"
 
 char*
 slv2_strjoin(const char* first, ...)
@@ -87,3 +88,36 @@ slv2_get_lang()
 	return lang;
 }
 
+
+char*
+slv2_qname_expand(SLV2Plugin p, const char* qname)
+{
+	char* colon = strchr(qname, ':');
+	if (!colon || colon == qname) {
+		SLV2_ERRORF("Invalid QName `%s'\n", qname);
+		return NULL;
+	}
+
+	const size_t prefix_len = colon - qname;
+	char*        prefix     = malloc(prefix_len + 1);
+	memcpy(prefix, qname, prefix_len);
+	prefix[prefix_len] = '\0';
+
+	char* namespace = librdf_hash_get(p->world->namespaces, prefix);
+	free(prefix);
+	if (!namespace) {
+		SLV2_ERRORF("QName `%s' has Undefined prefix\n", qname);
+		return NULL;
+	}
+
+	const size_t qname_len     = strlen(qname);
+	const size_t suffix_len    = qname_len - prefix_len - 1;
+	const size_t namespace_len = strlen(namespace);
+	char*        uri           = malloc(namespace_len + suffix_len + 1);
+	memcpy(uri, namespace, namespace_len);
+	memcpy(uri + namespace_len, colon + 1, qname_len - prefix_len - 1);
+	uri[namespace_len + suffix_len] = '\0';
+
+	free(namespace);
+	return uri;
+}