1 files changed, 81 insertions, 0 deletions
diff --git a/docs/tutorial/examples/tut_mongo_sync_cmd_custom.c b/docs/tutorial/examples/tut_mongo_sync_cmd_custom.c
new file mode 100644
index 0000000..4e48b18
--- /dev/null
+++ b/docs/tutorial/examples/tut_mongo_sync_cmd_custom.c
@@ -0,0 +1,81 @@
+#include <mongo.h>
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main (void)
+{
+  mongo_sync_connection *conn;
+  mongo_packet *p;
+  mongo_sync_cursor *cursor;
+  bson *eval;
+
+  conn = mongo_sync_connect ("localhost", 27017, FALSE);
+  if (!conn)
+    {
+      perror ("mongo_sync_connect()");
+      exit (1);
+    }
+
+  eval = bson_build_full (BSON_TYPE_JS_CODE, "$eval", FALSE,
+                          "function(x){return x + 4.2;}", -1,
+                          BSON_TYPE_ARRAY, "args", TRUE,
+                          bson_build (BSON_TYPE_INT32, "0", 1,
+                                      BSON_TYPE_NONE),
+                          BSON_TYPE_NONE);
+  bson_finish (eval);
+
+  p = mongo_sync_cmd_custom (conn, "test", eval);
+
+  if (!p)
+    {
+      gchar *error = NULL;
+
+      mongo_sync_cmd_get_last_error (conn, "test", &error);
+      fprintf (stderr, "Can't run db.eval: %s\n", error);
+      g_free (error);
+
+      exit (1);
+    }
+
+  cursor = mongo_sync_cursor_new (conn, "test", p);
+
+  if (!cursor)
+    {
+      perror ("mongo_sync_cursor_new()");
+      exit (1);
+    }
+
+  while (mongo_sync_cursor_next (cursor))
+    {
+      bson *result;
+      bson_cursor *c;
+      gdouble r;
+
+      result = mongo_sync_cursor_get_data (cursor);
+      if (!result)
+        {
+          perror ("mongo_sync_cursor_get_data()");
+          exit (1);
+        }
+
+      c = bson_find (result, "retval");
+      if (!bson_cursor_get_double (c, &r))
+        {
+          perror ("bson_cursor_get_double()");
+          exit (1);
+        }
+      bson_cursor_free (c);
+      bson_free (result);
+
+      printf ("Result: %2.1f\n", r);
+    }
+
+  mongo_sync_cursor_free (cursor);
+  mongo_sync_disconnect (conn);
+
+  return 0;
+}