userlibandfileserver/fileserver/sfat32/sl_utl.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 12 Mar 2010 15:50:11 +0200
branchRCL_3
changeset 20 597aaf25e343
parent 8 538db54a451d
permissions -rw-r--r--
Revision: 201008 Kit: 201008
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
2
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
     1
// Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies).
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
     2
// All rights reserved.
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
     3
// This component and the accompanying materials are made available
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
     4
// under the terms of the License "Eclipse Public License v1.0"
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
     5
// which accompanies this distribution, and is available
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
     6
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
     7
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
     8
// Initial Contributors:
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
     9
// Nokia Corporation - initial contribution.
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    10
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    11
// Contributors:
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    12
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    13
// Description:
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    14
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    15
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    16
#include "sl_std.h"
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    17
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    18
//-----------------------------------------------------------------------------
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    19
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    20
TTime DosTimeToTTime(TInt aDosTime,TInt aDosDate)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    21
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    22
//	Deciphers the dos time/date entry information and converts to TTime
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    23
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    24
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    25
	TInt secMask=0x1F;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    26
	TInt minMask=0x07E0;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    27
	TInt hrMask=0xF800;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    28
	TInt dayMask=0x1F;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    29
	TInt monthMask=0x01E0;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    30
	TInt yearMask=0xFE00;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    31
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    32
	TInt secs=(aDosTime&secMask)*2;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    33
	TInt mins=(aDosTime&minMask)>>5;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    34
	TInt hrs=(aDosTime&hrMask)>>11;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    35
	TInt days=(aDosDate&dayMask)-1;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    36
	TMonth months=(TMonth)(((aDosDate&monthMask)>>5)-1);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    37
	TInt years=((aDosDate&yearMask)>>9)+1980;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    38
	
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    39
	TDateTime datetime;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    40
	TInt ret=datetime.Set(years,months,days,hrs,mins,secs,0);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    41
	if (ret==KErrNone)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    42
		return(TTime(datetime));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    43
	return(TTime(0));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    44
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    45
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    46
TInt DosTimeFromTTime(const TTime& aTime)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    47
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    48
// Converts a TTime to a dos time
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    49
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    50
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    51
	TDateTime dateTime=aTime.DateTime();
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    52
	TInt dosSecs=dateTime.Second()/2;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    53
	TInt dosMins=dateTime.Minute()<<5;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    54
	TInt dosHrs=dateTime.Hour()<<11;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    55
	return dosSecs|dosMins|dosHrs;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    56
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    57
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    58
TInt DosDateFromTTime(const TTime& aTime)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    59
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    60
// Converts a TTime to a dos date
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    61
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    62
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    63
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    64
	TDateTime dateTime=aTime.DateTime();
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    65
	TInt dosDays=dateTime.Day()+1;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    66
	TInt dosMonths=(dateTime.Month()+1)<<5;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    67
	TInt dosYears=(dateTime.Year()-1980)<<9;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    68
	return dosDays|dosMonths|dosYears;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    69
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    70
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    71
TBuf8<12> DosNameToStdFormat(const TDesC8& aDosName)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    72
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    73
// Converts xxx.yyy to standard format aaaaaaaayyy
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    74
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    75
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    76
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    77
	__ASSERT_DEBUG(aDosName.Length()>=0 && aDosName.Length()<=12,Fault(EFatBadDosFormatName));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    78
	TBuf8<12> result;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    79
	Mem::Fill((TUint8*)result.Ptr(),result.MaxSize(),' ');
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    80
	TInt dotPos=aDosName.Locate('.');
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    81
	if (dotPos==KErrNotFound)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    82
		{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    83
		result=aDosName;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    84
		result.SetLength(11);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    85
		return result;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    86
		}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    87
	result=aDosName.Left(dotPos);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    88
	result.SetLength(11);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    89
	TPtr8 ext(&result[8],3);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    90
	ext=aDosName.Right(aDosName.Length()-dotPos-1);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    91
	return result;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    92
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    93
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    94
TBuf8<12> DosNameFromStdFormat(const TDesC8& aStdFormatName)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    95
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    96
// Converts aaaaaaaayyy to dos name format xxx.yyy
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    97
//
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    98
	{
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
    99
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   100
	__ASSERT_DEBUG(aStdFormatName.Length()==11,Fault(EFatBadStdFormatName));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   101
	TBuf8<12> result;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   102
	TInt nameLen=aStdFormatName.Locate(' ');
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   103
	if (nameLen>8 || nameLen==KErrNotFound)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   104
		nameLen=8;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   105
	result=aStdFormatName.Left(nameLen);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   106
	TPtrC8 ext(&aStdFormatName[8],3);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   107
	TInt extLen=ext.Locate(' ');
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   108
	if (extLen)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   109
		result.Append(TChar('.'));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   110
	if (extLen==KErrNotFound)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   111
		extLen=3;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   112
	result.Append(ext.Left(extLen));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   113
    if(result.Length() && result[0]==0x05 )
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   114
	    {
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   115
	    result[0]=0xE5;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   116
	    }
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   117
	return result;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   118
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   119
20
597aaf25e343 Revision: 201008
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 8
diff changeset
   120
/**
597aaf25e343 Revision: 201008
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 8
diff changeset
   121
    @param  aNameLength file name length
597aaf25e343 Revision: 201008
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 8
diff changeset
   122
    @return the number of VFat entries required to describe a filename of length aNameLength
597aaf25e343 Revision: 201008
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 8
diff changeset
   123
*/
597aaf25e343 Revision: 201008
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 8
diff changeset
   124
TUint NumberOfVFatEntries(TUint aNameLength)
2
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   125
	{
20
597aaf25e343 Revision: 201008
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 8
diff changeset
   126
    ASSERT(aNameLength);
597aaf25e343 Revision: 201008
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 8
diff changeset
   127
    //-- 1 compulsory DOS entry included
597aaf25e343 Revision: 201008
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 8
diff changeset
   128
    const TUint numberOfEntries=1+(aNameLength + KMaxVFatEntryName - 1) / KMaxVFatEntryName;	
597aaf25e343 Revision: 201008
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 8
diff changeset
   129
	return numberOfEntries;
2
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   130
	}
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   131
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   132
//-----------------------------------------------------------------------------
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   133
/** 
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   134
    Calculate DOS short name checksum
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   135
    @param aShortName short name descriptor (must be at least 11 bytes long)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   136
    @return checksum
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   137
*/
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   138
TUint8 CalculateShortNameCheckSum(const TDesC8& aShortName)
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   139
    {
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   140
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   141
    ASSERT(aShortName.Length() >= KFatDirNameSize);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   142
    const TUint8* pName = aShortName.Ptr();
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   143
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   144
    const TUint32 w0 = ((const TUint32*)pName)[0];
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   145
    const TUint32 w1 = ((const TUint32*)pName)[1];
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   146
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   147
    TUint32 chkSum = w0 & 0xFF;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   148
    
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   149
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + ((w0 << 16) >> 24));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   150
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + ((w0 << 8)  >> 24));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   151
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + ( w0 >> 24));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   152
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   153
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + (w1) & 0xFF);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   154
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + ((w1 << 16) >> 24));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   155
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + ((w1 << 8)  >> 24));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   156
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + ( w1 >> 24));
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   157
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   158
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + pName[8]);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   159
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + pName[9]);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   160
    chkSum = (TUint8)(((chkSum<<7) | (chkSum>>1)) + pName[10]);
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   161
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   162
    return (TUint8)chkSum;
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   163
    }
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   164
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   165
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   166
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   167
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   168
4122176ea935 Revision: 200948 + Removing redundant base integration tests and fixing build errors
John Imhofe <john.imhofe@nokia.com>
parents:
diff changeset
   169