imgtools/imglib/host/h_file.cpp
changeset 0 044383f39525
child 590 360bd6b35136
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/host/h_file.cpp	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,150 @@
+/*
+* Copyright (c) 1995-2009 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: 
+*
+*/
+
+
+#ifdef __LINUX__
+#include <unistd.h>
+#else	// Windows specific
+#include <io.h>
+#endif
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include "h_utl.h"
+
+TInt HFile::Open(const TText * const aFileName, TInt32 * const aFileHandle)
+	{
+#ifdef __LINUX__
+	TInt32 hFile = open((const char *)aFileName, O_RDONLY );
+#else
+	TInt32 hFile = _open((const char *)aFileName, _O_RDONLY | _O_BINARY);
+#endif
+
+	if (hFile == -1)
+		{
+		switch (errno)
+			{
+		case EACCES:
+			Print(EError,"Can't open file %s - access violation.\n",aFileName);
+			break;
+		case EEXIST:
+			Print(EAlways,"Tried to create existing file %s\n",aFileName);
+			break;
+		case EINVAL:
+			Print(EError,"Can't open file %s - invalid open flags.\n",aFileName);
+			break;
+		case EMFILE:
+			Print(EError,"Can't open file %s - too many open files.\n",aFileName);
+			break;
+		case ENOENT:
+			Print(EError,"Can't open file %s - file or path not found.\n",aFileName);
+			break;
+		default:
+			Print(EError,"Can't open file %s, error %d (decimal).\n",aFileName,errno);
+			break;
+			}
+		return errno;
+		}
+ 	*aFileHandle = hFile;
+	return 0;
+	}	
+
+/******************************************************************************/
+TBool HFile::Read(const TInt32 aFileHandle, TAny * const aBuffer, const TUint32 aCount)
+	{
+	TInt32 bytesRead =  _read(aFileHandle, aBuffer, aCount);
+	if (bytesRead != (TInt32)aCount)
+		return EFalse;
+	else
+		return ETrue;
+	}  
+
+/******************************************************************************/
+TBool HFile::Seek(const TInt32 aFileHandle, const TUint32 aOffset)
+	{
+	TInt32 newPos = _lseek(aFileHandle, aOffset, SEEK_SET);
+	if (newPos == -1)
+		return(EFalse);
+	else
+		return ETrue;
+	}
+
+/******************************************************************************/
+TUint32 HFile::GetPos(const TInt32 aFileHandle)
+	{
+	TUint32 pos = _lseek(aFileHandle, 0, SEEK_CUR);
+	return pos;
+	}
+
+/******************************************************************************/
+TUint32 HFile::GetLength(TText *aName)
+	{
+	TInt32 handle;
+	if (HFile::Open(aName, &handle)==0)
+		{
+		TUint32 size = _filelength(handle);
+		HFile::Close(handle);
+		return size;
+		}
+	else
+		return 0;
+	}
+
+/******************************************************************************/
+TUint32 HFile::GetLength(const TInt32 aFileHandle)
+	{
+
+	TUint32 size = _filelength(aFileHandle);
+	return size;
+	}
+
+
+/******************************************************************************/
+void HFile::Close(const TInt32 aFileHandle)
+	{
+	_close(aFileHandle);
+	}
+
+
+/******************************************************************************/
+TUint32 HFile::Read(TText *aName, TAny *someMem)
+ 	{
+	TInt32 handle;
+	if (HFile::Open(aName, &handle)==0)
+		{
+		TUint32 size = HFile::GetLength(handle);
+		if (HFile::Read(handle, someMem, size))
+			{
+			HFile::Close(handle);
+			return size;
+			}
+		else 
+			{
+			HFile::Close(handle);
+			return 0;
+			}
+		}
+	else
+		return 0;
+	}
+
+
+/******************************************************************************/