From: Lennart Poettering <lennart@poettering.net>
Date: Sat, 10 Apr 2010 02:38:14 +0000 (+0200)
Subject: util: introduce streq_ptr() for comparing strings or their pointers
X-Git-Tag: v1~588
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=e05797fba258d7a58987cc8870fae6e34b94fe46

util: introduce streq_ptr() for comparing strings or their pointers
---

diff --git a/util.c b/util.c
index b4d6eefbd..3fe59c8eb 100644
--- a/util.c
+++ b/util.c
@@ -42,6 +42,19 @@
 #include "log.h"
 #include "strv.h"
 
+bool streq_ptr(const char *a, const char *b) {
+
+        /* Like streq(), but tries to make sense of NULL pointers */
+
+        if (a && b)
+                return streq(a, b);
+
+        if (!a && !b)
+                return true;
+
+        return false;
+}
+
 usec_t now(clockid_t clock_id) {
         struct timespec ts;
 
diff --git a/util.h b/util.h
index 30a0616d5..4881c981b 100644
--- a/util.h
+++ b/util.h
@@ -51,6 +51,8 @@ struct timeval *timeval_store(struct timeval *tv, usec_t u);
 
 #define streq(a,b) (strcmp((a),(b)) == 0)
 
+bool streq_ptr(const char *a, const char *b);
+
 #define new(t, n) ((t*) malloc(sizeof(t)*(n)))
 
 #define new0(t, n) ((t*) calloc((n), sizeof(t)))