[tfaber] 68847: [CMD] - Avoid statically importing FindFirstStreamW/FindNextStreamW so that our cmd.exe can work on WinXP. - Accept lowercase /r switch

Author: tfaber
Date: Fri Aug 28 11:39:45 2015
New Revision: 68847

URL: http://svn.reactos.org/svn/reactos?rev=68847&view=rev
Log:
[CMD]
- Avoid statically importing FindFirstStreamW/FindNextStreamW so that our cmd.exe can work on WinXP.
- Accept lowercase /r switch

Modified:
    trunk/reactos/base/shell/cmd/dir.c

Modified: trunk/reactos/base/shell/cmd/dir.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/base/shell/cmd/dir.c?rev=68...
==============================================================================
--- trunk/reactos/base/shell/cmd/dir.c	[iso-8859-1] (original)
+++ trunk/reactos/base/shell/cmd/dir.c	[iso-8859-1] Fri Aug 28 11:39:45 2015
@@ -341,7 +341,7 @@
                 lpFlags->bRecursive = ! bNegative;
             else if (cCurUChar == _T('X'))
                 lpFlags->bShortName = ! bNegative;
-            else if (cCurChar == _T('R'))
+            else if (cCurUChar == _T('R'))
                 lpFlags->bDataStreams = ! bNegative;
             else if (cCurChar == _T('4'))
                 lpFlags->b4Digit = ! bNegative;
@@ -1342,6 +1342,8 @@
     WIN32_FIND_STREAM_DATA wfsdStreamInfo;
     PDIRFINDSTREAMNODE * ptrCurNode;    /* The pointer to the first stream */
     PDIRFINDSTREAMNODE ptrFreeNode;     /* The pointer used during cleanup */
+    static HANDLE (WINAPI *pFindFirstStreamW)(LPCWSTR, STREAM_INFO_LEVELS, LPVOID, DWORD);
+    static BOOL (WINAPI *pFindNextStreamW)(HANDLE, LPVOID);

/* Initialize Variables */
     ptrStartNode = NULL;
@@ -1437,13 +1439,28 @@
                 /* Alternate streams are only displayed with new long list */
                 if (lpFlags->bNewLongList && lpFlags->bDataStreams)
                 {
+                    if (!pFindFirstStreamW)
+                    {
+                        pFindFirstStreamW = (PVOID)GetProcAddress(GetModuleHandle(_T("kernel32")), "FindFirstStreamW");
+                        pFindNextStreamW = (PVOID)GetProcAddress(GetModuleHandle(_T("kernel32")), "FindNextStreamW");
+                    }
+
                     /* Try to get stream information */
-                    hStreams = FindFirstStreamW(wfdFileInfo.cFileName, FindStreamInfoStandard, &wfsdStreamInfo, 0);
+                    if (pFindFirstStreamW && pFindNextStreamW)
+                    {
+                        hStreams = pFindFirstStreamW(wfdFileInfo.cFileName, FindStreamInfoStandard, &wfsdStreamInfo, 0);
+                    }
+                    else
+                    {
+                        hStreams = INVALID_HANDLE_VALUE;
+                        ERR("FindFirstStreamW not supported!\n");
+                    }
+
                     if (hStreams != INVALID_HANDLE_VALUE)
                     {
                         /* We totally ignore first stream. It contains data about ::$DATA */
                         ptrCurNode = &ptrNextNode->ptrNext->stInfo.ptrHead;
-                        while (FindNextStreamW(hStreams, &wfsdStreamInfo))
+                        while (pFindNextStreamW(hStreams, &wfsdStreamInfo))
                         {
                             *ptrCurNode = cmd_alloc(sizeof(DIRFINDSTREAMNODE));
                             if (*ptrCurNode == NULL)