[PATCH] [Msvcrt]: implemented wcscat_s

[Eric Pouech]

A+
---

 dlls/msvcrt/msvcrt.spec |    1 +
 dlls/msvcrt/wcs.c       |   32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 0 deletions(-)


diff --git a/dlls/msvcrt/msvcrt.spec b/dlls/msvcrt/msvcrt.spec
index c54d33e..ea61726 100644
--- a/dlls/msvcrt/msvcrt.spec
+++ b/dlls/msvcrt/msvcrt.spec
@@ -761,6 +761,7 @@
 @ cdecl vswprintf(ptr wstr ptr) MSVCRT_vswprintf
 @ cdecl vwprintf(wstr ptr) MSVCRT_vwprintf
 @ cdecl wcscat(wstr wstr) ntdll.wcscat
+@ cdecl wcscat_s(str long wstr) MSVCRT_wcscat_s
 @ cdecl wcschr(wstr long) ntdll.wcschr
 @ cdecl wcscmp(wstr wstr) ntdll.wcscmp
 @ cdecl wcscoll(wstr wstr) MSVCRT_wcscoll
diff --git a/dlls/msvcrt/wcs.c b/dlls/msvcrt/wcs.c
index 5c80092..7a8a0d7 100644
--- a/dlls/msvcrt/wcs.c
+++ b/dlls/msvcrt/wcs.c
@@ -1077,3 +1077,35 @@ INT CDECL MSVCRT_wcsncpy_s( MSVCRT_wchar_t* wcDest, MSVCRT_size_t numElement, co
 
     return 0;
 }
+
+/******************************************************************
+ *		wcscat_s (MSVCRT)
+ *
+ *
+ */
+INT CDECL MSVCRT_wcscat_s(MSVCRT_wchar_t* dst, MSVCRT_size_t elem, const MSVCRT_wchar_t* src)
+{
+    MSVCRT_size_t i, j;
+
+    if (!dst || elem == 0) return MSVCRT_EINVAL;
+    if (!src)
+    {
+        dst[0] = '\0';
+        return MSVCRT_EINVAL;
+    }
+
+    for (i = 0; i < elem; i++)
+    {
+        if (dst[i] == '\0')
+        {
+            for (j = 0; (j + i) < elem; j++)
+            {
+                if ((dst[j + i] = src[j]) == '\0') return 0;
+            }
+        }
+    }
+    /* Set the first element to 0, not the first element after the skipped part */
+    dst[0] = '\0';
+    return MSVCRT_ERANGE;
+}
+