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-rw-r--r--src/writer.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/src/writer.c b/src/writer.c
index 64b99076..5415781e 100644
--- a/src/writer.c
+++ b/src/writer.c
@@ -477,7 +477,10 @@ write_uri_node(SerdWriter* const writer,
sink("== ", 3, writer);
}
- const bool has_scheme = serd_uri_string_has_scheme(node->buf);
+ const bool has_scheme = serd_uri_string_has_scheme(node->buf);
+ const bool supports_rel = (writer->syntax != SERD_NTRIPLES &&
+ writer->syntax != SERD_NQUADS);
+
if (field == FIELD_PREDICATE && supports_abbrev(writer)
&& !strcmp((const char*)node->buf, NS_RDF "type")) {
return sink("a", 1, writer) == 1;
@@ -501,11 +504,15 @@ write_uri_node(SerdWriter* const writer,
return false;
}
serd_uri_resolve(&uri, &in_base_uri, &abs_uri);
+ if (!abs_uri.scheme.len && !supports_rel) {
+ w_err(writer, SERD_ERR_BAD_SYNTAX,
+ "unable to write relative URI `%s'\n", node->buf);
+ return false;
+ }
+
bool rooted = uri_is_under(&writer->base_uri, &writer->root_uri);
SerdURI* root = rooted ? &writer->root_uri : & writer->base_uri;
- if (!uri_is_under(&abs_uri, root) ||
- writer->syntax == SERD_NTRIPLES ||
- writer->syntax == SERD_NQUADS) {
+ if (!uri_is_under(&abs_uri, root) || !supports_rel) {
serd_uri_serialise(&abs_uri, uri_sink, writer);
} else {
serd_uri_serialise_relative(