1 files changed, 76 insertions, 0 deletions
diff --git a/private/crt32/mbstring/mbslwr.c b/private/crt32/mbstring/mbslwr.c
new file mode 100644
index 000000000..f25f5e409
--- /dev/null
+++ b/private/crt32/mbstring/mbslwr.c
@@ -0,0 +1,76 @@
+/*** 
+*mbslwr.c - Convert string lower case (MBCS)
+*
+*	Copyright (c) 1985-1992, Microsoft Corporation.  All rights reserved.
+*
+*Purpose:
+*	Convert string lower case (MBCS)
+*
+*Revision History:
+*	11-19-92  KRS	Ported from 16-bit sources.
+*
+*******************************************************************************/
+
+#ifdef _MBCS
+#include <cruntime.h>
+#include <ctype.h>
+#include <mbdata.h>
+#include <mbstring.h>
+#include <mbctype.h>
+
+/***
+* _mbslwr - Convert string lower case (MBCS)
+*
+*Purpose:
+*	Convrts all the upper case characters in a string
+*	to lower case in place.  MBCS chars are handled
+*	correctly.
+*
+*	Note:  Use test against 0x00FF instead of _ISLEADBYTE
+*	to ensure that we don't call SBCS routine with a two-byte
+*	value.
+*
+*Entry:
+*	unsigned char *string = pointer to string
+*
+*Exit:
+*	Returns a pointer to the input string; no error return.
+*
+*Exceptions:
+*
+*******************************************************************************/
+
+unsigned char * _CRTAPI1 _mbslwr( string )
+unsigned char *string;
+{
+	unsigned char *cp;
+
+	for (cp=string; *cp; cp++) {
+
+		if (_ISLEADBYTE(*cp)) {
+
+#ifdef _MBCS_OS
+			cp++;		/* bump pointer */
+#else
+			if ((_mbascii) && (*cp == _MBASCIILEAD)) {
+
+			    if (   (*(cp+1) >= (_MBUPPERLOW & 0x00FF))
+				&& (*(cp+1) <= (_MBUPPERHIGH & 0x00FF))
+			       )
+				    *(cp+1) += _MBCASEDIFF;
+			}
+
+			cp++;
+#endif
+
+		}
+
+		else
+			/* single byte, macro version */
+			*cp = (unsigned char) tolower(*cp);
+
+	}
+
+	return( string );
+}
+#endif	/* _MBCS */