Create a branch for Aleksandar Andrejevic for his work on NTVDM. See http://jira.reactos.org/browse/CORE-7250 for more details.

svn path=/branches/ntvdm/; revision=59241

lib/sdk/crt/mbstring/mbsncpy.c

@@ -0,0 +1,159 @@
+/*
+ * COPYRIGHT:   See COPYING in the top level directory
+ * PROJECT:     ReactOS system libraries
+ * FILE:        lib/msvcrt/mbstring/mbsncpy.c
+ * PURPOSE:     Copies a string to a maximum of n bytes or characters
+ * PROGRAMERS:
+ *              Copyright 1999 Ariadne
+ *              Copyright 1999 Alexandre Julliard
+ *              Copyright 2000 Jon Griffths
+ *
+ */
+
+#include <precomp.h>
+#include <mbstring.h>
+
+/*********************************************************************
+ *		_mbsncpy(MSVCRT.@)
+ * REMARKS
+ *  The parameter n is the number or characters to copy, not the size of
+ *  the buffer. Use _mbsnbcpy for a function analogical to strncpy
+ */
+unsigned char* CDECL _mbsncpy(unsigned char* dst, const unsigned char* src, size_t n)
+{
+  unsigned char* ret = dst;
+  if(!n)
+    return dst;
+  if (get_mbcinfo()->ismbcodepage)
+  {
+    while (*src && n)
+    {
+      n--;
+      if (_ismbblead(*src))
+      {
+        if (!*(src+1))
+        {
+            *dst++ = 0;
+            *dst++ = 0;
+            break;
+        }
+
+        *dst++ = *src++;
+      }
+
+      *dst++ = *src++;
+    }
+  }
+  else
+  {
+    while (n)
+    {
+        n--;
+        if (!(*dst++ = *src++)) break;
+    }
+  }
+  while (n--) *dst++ = 0;
+  return ret;
+}
+
+/*********************************************************************
+ *              _mbsnbcpy_s(MSVCRT.@)
+ * REMARKS
+ * Unlike _mbsnbcpy this function does not pad the rest of the dest
+ * string with 0
+ */
+int CDECL _mbsnbcpy_s(unsigned char* dst, size_t size, const unsigned char* src, size_t n)
+{
+    size_t pos = 0;
+
+    if(!dst || size == 0)
+        return EINVAL;
+    if(!src)
+    {
+        dst[0] = '\0';
+        return EINVAL;
+    }
+    if(!n)
+        return 0;
+
+    if(get_mbcinfo()->ismbcodepage)
+    {
+        int is_lead = 0;
+        while (*src && n)
+        {
+            if(pos == size)
+            {
+                dst[0] = '\0';
+                return ERANGE;
+            }
+            is_lead = (!is_lead && _ismbblead(*src));
+            n--;
+            dst[pos++] = *src++;
+        }
+
+        if (is_lead) /* if string ends with a lead, remove it */
+            dst[pos - 1] = 0;
+    }
+    else
+    {
+        while (n)
+        {
+            n--;
+            if(pos == size)
+            {
+                dst[0] = '\0';
+                return ERANGE;
+            }
+
+            if(!(*src)) break;
+            dst[pos++] = *src++;
+        }
+    }
+
+    if(pos < size)
+        dst[pos] = '\0';
+    else
+    {
+        dst[0] = '\0';
+        return ERANGE;
+    }
+
+    return 0;
+}
+
+/*********************************************************************
+ *              _mbsnbcpy(MSVCRT.@)
+ * REMARKS
+ *  Like strncpy this function doesn't enforce the string to be
+ *  NUL-terminated
+ */
+unsigned char* CDECL _mbsnbcpy(unsigned char* dst, const unsigned char* src, size_t n)
+{
+  unsigned char* ret = dst;
+  if(!n)
+    return dst;
+  if(get_mbcinfo()->ismbcodepage)
+  {
+    int is_lead = 0;
+    while (*src && n)
+    {
+      is_lead = (!is_lead && _ismbblead(*src));
+      n--;
+      *dst++ = *src++;
+    }
+
+    if (is_lead) /* if string ends with a lead, remove it */
+	*(dst - 1) = 0;
+  }
+  else
+  {
+    while (n)
+    {
+        n--;
+        if (!(*dst++ = *src++)) break;
+    }
+  }
+  while (n--) *dst++ = 0;
+  return ret;
+}
+