scanner: allow empty key name literals

Some keymaps actually have this, like the quartz.xkb which is tested. We
need to support these.

https://bugs.freedesktop.org/show_bug.cgi?id=67654

Reported-By: Gatis Paeglis <gatis.paeglis@digia.com>
Signed-off-by: Ran Benita <ran234@gmail.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/utils.h b/src/utils.h
index eca6368..5cd6e57 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -72,6 +72,12 @@ strdup_safe(const char *s)
     return s ? strdup(s) : NULL;
 }
 
+static inline size_t
+strlen_safe(const char *s)
+{
+    return s ? strlen(s) : 0;
+}
+
 static inline bool
 isempty(const char *s)
 {
@@ -84,6 +90,12 @@ strnull(const char *s)
     return s ? s : "(null)";
 }
 
+static inline const char *
+strempty(const char *s)
+{
+    return s ? s : "";
+}
+
 static inline void *
 memdup(const void *mem, size_t nmemb, size_t size)
 {