Add serd_world_get_blank()

2 files changed, 22 insertions, 1 deletions

diff --git a/src/world.c b/src/world.c
index 50f5bc9e..d503a2ff 100644
--- a/src/world.c
+++ b/src/world.c
@@ -18,6 +18,7 @@
 
 #include "world.h"
 
+#include "node.h"
 #include "serd_config.h"
 
 #include <errno.h>
@@ -30,6 +31,8 @@
 #   include <fcntl.h>
 #endif
 
+#define BLANK_CHARS 11
+
 FILE*
 serd_world_fopen(SerdWorld* world, const char* path, const char* mode)
 {
@@ -72,15 +75,30 @@ serd_world_errorf(const SerdWorld* world, SerdStatus st, const char* fmt, ...)
 SerdWorld*
 serd_world_new(void)
 {
-	return (SerdWorld*)calloc(1, sizeof(SerdWorld));
+	SerdWorld* world = (SerdWorld*)calloc(1, sizeof(SerdWorld));
+
+	world->blank_node = serd_node_new_blank("b0000000000");
+
+	return world;
 }
 
 void
 serd_world_free(SerdWorld* world)
 {
+	serd_node_free(world->blank_node);
 	free(world);
 }
 
+const SerdNode*
+serd_world_get_blank(SerdWorld* world)
+{
+	char* buf = serd_node_buffer(world->blank_node);
+	memset(buf, 0, BLANK_CHARS + 1);
+	world->blank_node->n_bytes = snprintf(
+		buf, BLANK_CHARS, "b%u", ++world->next_blank_id);
+	return world->blank_node;
+}
+
 void
 serd_world_set_error_sink(SerdWorld*    world,
                           SerdErrorSink error_sink,
diff --git a/src/world.h b/src/world.h
index 7aaf3689..6d32b529 100644
--- a/src/world.h
+++ b/src/world.h
@@ -19,11 +19,14 @@
 
 #include "serd/serd.h"
 
+#include <stdint.h>
 #include <stdio.h>
 
 struct SerdWorldImpl {
 	SerdErrorSink error_sink;
 	void*         error_handle;
+	uint32_t      next_blank_id;
+	SerdNode*     blank_node;
 };
 
 FILE* serd_world_fopen(SerdWorld* world, const char* path, const char* mode);