1 files changed, 72 insertions, 0 deletions
diff --git a/private/crt32/mbstring/mbsrev.c b/private/crt32/mbstring/mbsrev.c
new file mode 100644
index 000000000..8c0a0f62a
--- /dev/null
+++ b/private/crt32/mbstring/mbsrev.c
@@ -0,0 +1,72 @@
+/*** 
+*mbsrev.c - Reverse a string in place (MBCS)
+*
+*	Copyright (c) 1988-1992, Microsoft Corporation.  All rights reserved.
+*
+*Purpose:
+*	Reverse a string in place (MBCS)
+*
+*Revision History:
+*	11-19-92  KRS	Ported from 16-bit sources.
+*
+*******************************************************************************/
+
+#ifdef _MBCS
+#include <cruntime.h>
+#include <mbdata.h>
+#include <mbctype.h>
+#include <mbstring.h>
+
+
+/***
+* _mbsrev - Reverse a string in place (MBCS)
+*
+*Purpose:
+*	Reverses the order of characters in the string.  The terminating
+*	null character remains in place.  The order of MBCS characters
+*       is not changed.
+*
+*Entry:
+*	unsigned char *string = string to reverse
+*
+*Exit:
+*       returns string - now with reversed characters
+*
+*Exceptions:
+*
+*******************************************************************************/
+
+unsigned char * _CRTAPI1 _mbsrev(string)
+unsigned char *string;
+{
+
+	unsigned char *start = string;
+	unsigned char *left  = string;
+	unsigned char c;
+
+	/* first go through and reverse the bytes in MBCS chars */
+        while ( *string ) {
+
+		if ( _ISLEADBYTE(*string++) ) {
+                        if ( *string ) {
+                                c = *string;
+                                *string = *(string - 1);
+                                *(string - 1) = c;
+                                string++;
+                        }
+                        else /* second byte is EOS */
+                                break;
+                }
+        }
+
+	/* now reverse the whole string */
+        string--;
+        while ( left < string ) {
+                c = *left;
+                *left++ = *string;
+                *string-- = c;
+        }
+
+        return ( start );
+}
+#endif	/* _MBCS */