[tracker/wip/carlosg/sparql1.1: 143/201] libtracker-data: Prepare tracker_generate_uuid() to handle different prefixes

[Carlos Garnacho <carlosg src gnome org>]

commit 6d217834f0d5bfd64b7555188929a74ae4d9bbed
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Jul 7 19:27:42 2019 +0200

    libtracker-data: Prepare tracker_generate_uuid() to handle different prefixes

 src/libtracker-data/tracker-db-interface-sqlite.c |  2 +-
 src/libtracker-data/tracker-uuid.c                | 20 ++++++++++++++------
 src/libtracker-data/tracker-uuid.h                |  2 +-
 3 files changed, 16 insertions(+), 8 deletions(-)
---
diff --git a/src/libtracker-data/tracker-db-interface-sqlite.c 
b/src/libtracker-data/tracker-db-interface-sqlite.c
index 25cbe740f..250f82963 100644
--- a/src/libtracker-data/tracker-db-interface-sqlite.c
+++ b/src/libtracker-data/tracker-db-interface-sqlite.c
@@ -1757,7 +1757,7 @@ function_sparql_uuid (sqlite3_context *context,
 
        do {
                g_clear_pointer (&uuid, g_free);
-               uuid = tracker_generate_uuid ();
+               uuid = tracker_generate_uuid ("urn:uuid");
 
                sqlite3_reset (stmt);
                sqlite3_bind_text (stmt, 1, uuid, -1, SQLITE_TRANSIENT);
diff --git a/src/libtracker-data/tracker-uuid.c b/src/libtracker-data/tracker-uuid.c
index e7962bcfd..f2b18967a 100644
--- a/src/libtracker-data/tracker-uuid.c
+++ b/src/libtracker-data/tracker-uuid.c
@@ -21,26 +21,34 @@
 #include "config.h"
 #include "tracker-uuid.h"
 
+#define DEFAULT_PREFIX "urn:uuid"
+
 #if ! GLIB_CHECK_VERSION (2, 52, 0)
 #include <uuid/uuid.h>
 #endif
 
 gchar *
-tracker_generate_uuid (void)
+tracker_generate_uuid (const gchar *uri_prefix)
 {
        gchar *result;
 #if GLIB_CHECK_VERSION (2, 52, 0)
-       gchar *uuid = g_uuid_string_random ();
-       result = g_strdup_printf ("urn:uuid:%s", uuid);
-       g_free (uuid);
+       result = g_uuid_string_random ();
 #else
        uuid_t base = { 0, };
        gchar uuid[37];
 
        uuid_generate (base);
        uuid_unparse_lower (base, uuid);
-       result = g_strdup_printf ("urn:uuid:%s", uuid);
+       result = g_strdup_printf (uuid);
 #endif
 
-       return result;
+       if (uri_prefix) {
+               gchar *uri;
+
+               uri = g_strdup_printf ("%s:%s", uri_prefix, result);
+               g_free (result);
+               return uri;
+       } else {
+               return result;
+       }
 }
diff --git a/src/libtracker-data/tracker-uuid.h b/src/libtracker-data/tracker-uuid.h
index 744171e32..0393b7a5f 100644
--- a/src/libtracker-data/tracker-uuid.h
+++ b/src/libtracker-data/tracker-uuid.h
@@ -23,6 +23,6 @@
 
 #include <glib.h>
 
-gchar * tracker_generate_uuid (void);
+gchar * tracker_generate_uuid (const gchar *uri_prefix);
 
 #endif /* __TRACKER_UUID_H__ */