From d9459636e19bd84aad9ca46e20455b5c6aa44010 Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Wed, 17 Feb 2021 12:49:10 +0100
Subject: [PATCH] added functions to case-insensitively compare strings that
 might be NULL

---
 src/libgame/misc.c | 16 ++++++++++++++++
 src/libgame/misc.h |  2 ++
 2 files changed, 18 insertions(+)

diff --git a/src/libgame/misc.c b/src/libgame/misc.c
index 569526af..7a3afc68 100644
--- a/src/libgame/misc.c
+++ b/src/libgame/misc.c
@@ -1178,6 +1178,22 @@ boolean strEqualN(char *s1, char *s2, int n)
 	  strncmp(s1, s2, n) == 0);
 }
 
+boolean strEqualCase(char *s1, char *s2)
+{
+  return (s1 == NULL && s2 == NULL ? TRUE  :
+	  s1 == NULL && s2 != NULL ? FALSE :
+	  s1 != NULL && s2 == NULL ? FALSE :
+	  strcasecmp(s1, s2) == 0);
+}
+
+boolean strEqualCaseN(char *s1, char *s2, int n)
+{
+  return (s1 == NULL && s2 == NULL ? TRUE  :
+	  s1 == NULL && s2 != NULL ? FALSE :
+	  s1 != NULL && s2 == NULL ? FALSE :
+	  strncasecmp(s1, s2, n) == 0);
+}
+
 boolean strPrefix(char *s, char *prefix)
 {
   return (s == NULL && prefix == NULL ? TRUE  :
diff --git a/src/libgame/misc.h b/src/libgame/misc.h
index bb7753d7..66b310e7 100644
--- a/src/libgame/misc.h
+++ b/src/libgame/misc.h
@@ -171,6 +171,8 @@ char *getStringToLower(const char *);
 void setString(char **, char *);
 boolean strEqual(char *, char *);
 boolean strEqualN(char *, char *, int);
+boolean strEqualCase(char *, char *);
+boolean strEqualCaseN(char *, char *, int);
 boolean strPrefix(char *, char *);
 boolean strSuffix(char *, char *);
 boolean strPrefixLower(char *, char *);
-- 
2.34.1