Revision: 42148
http://brlcad.svn.sourceforge.net/brlcad/?rev=42148&view=rev
Author: d_rossberg
Date: 2011-01-12 16:24:49 +0000 (Wed, 12 Jan 2011)
Log Message:
-----------
the BU_STR_EMPTY() macro tests a string for emptiness ("" or NULL)
its result is either true or false
Modified Paths:
--------------
brlcad/trunk/include/bu.h
Modified: brlcad/trunk/include/bu.h
===================================================================
--- brlcad/trunk/include/bu.h 2011-01-12 16:07:41 UTC (rev 42147)
+++ brlcad/trunk/include/bu.h 2011-01-12 16:24:49 UTC (rev 42148)
@@ -5074,9 +5074,13 @@
*
* bu_strcmp() is a macro that includes the current file name and line
* number that can be used when bu debugging is enabled.
+ *
+ * BU_STR_EMPTY() is a macro that tests a string for emptiness, i.e. "" or
+ * NULL.
*/
BU_EXPORT BU_EXTERN(int bu_strcmpm, (const char *string1, const char *string2,
const char *label));
-#define bu_strcmp(s) bu_strcmpm(s, BU_FLSTR)
+#define bu_strcmp(s) bu_strcmpm(s, BU_FLSTR)
+#define BU_STR_EMPTY(s) (bu_strcmpm(s, "", BU_FLSTR) == 0)
/** @} */
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