From e4c1673f8066a7a84294ea6f03c318e096fcd17b Mon Sep 17 00:00:00 2001
From: Filip Navara <filip.navara@gmail.com>
Date: Sat, 26 Jun 2004 12:56:11 +0000
Subject: [PATCH] - Partial implementation of CompareStringW. Fixes bug #378.

svn path=/trunk/; revision=9883
---
 reactos/lib/kernel32/misc/stubs.c | 42 ++++++++++++++++++++++++++++---
 1 file changed, 39 insertions(+), 3 deletions(-)

diff --git a/reactos/lib/kernel32/misc/stubs.c b/reactos/lib/kernel32/misc/stubs.c
index f31bd6ee07e..0c5056691c7 100644
--- a/reactos/lib/kernel32/misc/stubs.c
+++ b/reactos/lib/kernel32/misc/stubs.c
@@ -1,4 +1,4 @@
-/* $Id: stubs.c,v 1.78 2004/06/20 23:42:07 gdalsnes Exp $
+/* $Id: stubs.c,v 1.79 2004/06/26 12:56:11 navaraf Exp $
  *
  * KERNEL32.DLL stubs (unimplemented functions)
  * Remove from this file, if you implement them.
@@ -106,8 +106,44 @@ CompareStringW (
     int cchCount2
     )
 {
-    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
-    return 0;
+    INT Result;
+    UNICODE_STRING String1, String2;
+
+    if (!lpString1 || !lpString2)
+    {
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return 0;
+    }
+
+    if (dwCmpFlags & ~(NORM_IGNORECASE | NORM_IGNORENONSPACE |
+        NORM_IGNORESYMBOLS | SORT_STRINGSORT | NORM_IGNOREKANATYPE |
+        NORM_IGNOREWIDTH | 0x10000000))
+    {
+        SetLastError(ERROR_INVALID_FLAGS);
+        return 0;
+    }
+
+    if (dwCmpFlags & ~NORM_IGNORECASE)
+    {
+        DPRINT1("CompareString: Unimplemented flags - 0x%x\n", 
+           dwCmpFlags & ~NORM_IGNORECASE);
+    }
+
+    if (cchCount1 < 0) cchCount1 = lstrlenW(lpString1);
+    if (cchCount2 < 0) cchCount2 = lstrlenW(lpString2);
+
+    String1.Length = String1.MaximumLength = cchCount1 * sizeof(WCHAR);
+    String1.Buffer = (LPWSTR)lpString1;
+    String2.Length = String2.MaximumLength = cchCount2 * sizeof(WCHAR);
+    String2.Buffer = (LPWSTR)lpString2;
+
+    Result = RtlCompareUnicodeString(
+       &String1, &String2, dwCmpFlags & NORM_IGNORECASE);
+
+    if (Result) /* need to translate result */
+        return (Result < 0) ? CSTR_LESS_THAN : CSTR_GREATER_THAN;
+
+    return CSTR_EQUAL;
 }