From: Ján Tomko <jtomko@redhat.com>
Date: Tue, 12 Feb 2019 16:01:09 +0000 (+0100)
Subject: internal: introduce a family of NULLSTR macros
X-Git-Tag: v5.1.0-rc1~91
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd5519deb75e9ff8adcd56d34cbe82dd6a341bcb;p=thirdparty%2Flibvirt.git

internal: introduce a family of NULLSTR macros

NULLSTR_EMPTY, the quiet child,
NULLSTR_STAR, the famous one and
NULLSTR_MINUS, the grumpy one.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
---

diff --git a/src/internal.h b/src/internal.h
index 3f3e567ac9..7c11f57e33 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -245,6 +245,21 @@
  */
 # define EMPTYSTR(s) ((s) ? (s) : "-")
 
+/*
+ * Turn a NULL string into an empty string
+ */
+# define NULLSTR_EMPTY(s) ((s) ? (s) : "")
+
+/*
+ * Turn a NULL string into a star
+ */
+# define NULLSTR_STAR(s) ((s) ? (s) : "*")
+
+/*
+ * Turn a NULL string into a minus sign
+ */
+# define NULLSTR_MINUS(s) ((s) ? (s) : "-")
+
 /**
  * SWAP:
  *