From c2516db9ac72c835cd72bafee35bff1743bda81e Mon Sep 17 00:00:00 2001
From: Torbjörn Andersson
Date: Fri, 27 Jul 2007 05:15:24 +0000
Subject: Early in the morning, strrev() looks like a more difficult problem
 than it really is. It's actually quite simple. In fact, the only magical
 thing about Bob's version was the way it swapped variables without using any
 temporary variable. Rewrote the function to use our SWAP() instead, since
 that actually makes it readable. Moved it to util.cpp (outside the Common
 namespace, for consistency with scumm_stricmp()) since Kirben knew of other
 places where it could be used.

svn-id: r28231
---
 common/util.cpp | 13 +++++++++++++
 common/util.h   |  1 +
 2 files changed, 14 insertions(+)

(limited to 'common')

diff --git a/common/util.cpp b/common/util.cpp
index fc5fe9a4e5..b38dfa6664 100644
--- a/common/util.cpp
+++ b/common/util.cpp
@@ -592,3 +592,16 @@ void CDECL warning(const char *s, ...) {
 #endif
 #endif
 }
+
+char *scumm_strrev(char *str) {
+	if (!str)
+		return str;
+	int len = strlen(str);
+	if (len < 2)
+		return str;
+	char *p1, *p2;
+	for (p1 = str, p2 = str + len - 1; p1 < p2; p1++, p2--) {
+		SWAP(*p1, *p2);
+	}
+	return str;
+}
diff --git a/common/util.h b/common/util.h
index 2325ba523a..0d63af0878 100644
--- a/common/util.h
+++ b/common/util.h
@@ -289,5 +289,6 @@ void CDECL debugC(int level, uint32 engine_level, const char *s, ...) GCC_PRINTF
 
 extern int gDebugLevel;
 
+char *scumm_strrev(char *str);
 
 #endif
-- 
cgit v1.2.3