kernel/eka/drivers/medmmc/toc.cpp
changeset 247 d8d70de2bd36
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/drivers/medmmc/toc.cpp	Wed Aug 18 11:08:29 2010 +0300
@@ -0,0 +1,71 @@
+// Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// TOC Partition Management for Embedded MMC devices
+// 
+//
+
+#include "toc.h"
+
+
+/*
+ * Search entry in TOC with aName as part of ItemName.
+ */
+TInt Toc::GetItemByName(const TText8* aName, STocItem& aItem)
+    {
+    if ( aName == NULL )
+        {
+        return KErrNotFound;
+        }
+    
+	// calculate length for name to be searched
+    TUint nameLen = 0;
+    for (; nameLen < KMaxItemNameLen && aName[nameLen] != 0; nameLen++) {};
+        
+	if ( !nameLen ) 
+	    return KErrGeneral; // zero length or Blank Name
+
+	// check all items in TOC	 
+	for (TUint i=0; i < KMaxNbrOfTocItems && iTOC[i].iStart != KEndOfToc; i++)
+		{	
+		// calculate length of current item 
+        TUint fileNameLen = 0;
+		for (; fileNameLen < KMaxItemNameLen && iTOC[i].iFileName[fileNameLen] != 0; fileNameLen++) {};
+		    
+		if ( fileNameLen < nameLen ) 
+		    continue;  // file name too short
+	
+		// compare Item with aName
+		for (TUint k = 0; k <= (fileNameLen - nameLen); k++ )				
+			{
+            TUint l=0;
+            for (; l < nameLen; l++ )
+                {
+                if ( aName[l] != iTOC[i].iFileName[k+l] ) 
+                    break;
+                }
+
+            if ( l == nameLen )
+                {
+                // item found
+                aItem = iTOC[i];
+                aItem.iStart += (iTocStartSector << KSectorShift);
+                return KErrNone;
+                }
+			}		
+		}
+	
+	return KErrNotFound;
+    }
+
+//  End of File