// Copyright (c) 1996-2009 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:

// f32\sfsrv\cl_find.cpp

// 

//

#include "cl_std.h"

#define gPathDelimiter TChar(';')

enum TMode {EFindByDrives,EFindByDrivesInPath,EFindByPath};

//

// Look for aFileName in aDir

//

	{

		{

		TEntry entry;

		TInt r=iFs->Entry(iFile.FullName(),entry);

			return r;

		}

	TInt r=iFs->GetDir(iFile.FullName(),KEntryAttMaskSupported|KEntryAttAllowUid,ESortByName,*iDir);

		{

		delete (*iDir);

		*iDir=NULL;

		}

	}

//

// Look for aFileName along the path and increment aPathPos

//

	{

	if (iMode==EFindByDrivesInPath)

		{

		TInt r=DoFindNextInDriveList();

		if (r!=KErrNotFound)

			return(r);

		iMode=EFindByPath;

		}

	FOREVER

		{

		if (iPath->Length()<iPathPos)

			return(KErrNotFound);

		TPtrC path(iPath->Ptr()+iPathPos,iPath->Length()-iPathPos);

		TInt r=path.Locate(gPathDelimiter);

		if (r==KErrNotFound)

			r=path.Length();

		path.Set(path.Ptr(),r);

		iPathPos+=r+1;

		TFileName fileName=iFile.NameAndExt();

		iFile.Set(fileName,&path,NULL);

		if (iFile.FullName().Length()>=2 && iFile.FullName()[1]==KDriveDelimiter)

			{

			TInt r=DoFindInDir();

			continue;

			}

		iMode=EFindByDrivesInPath;

		r=FindByDir(fileName,path);

			return(r);

		}

	}

//

// Look for aFileName in all available drives in order

//

	{

	TInt found;	

	TDriveInfo driveInfo;

	const TUint matchedFlags= iMatchMask & KDriveAttMatchedFlags;  //KDriveAttMatchedFlags = 0xFFF

	const TUint matchedAtt = iMatchMask & KDriveAttMatchedAtt;	 //KDriveAttMatchedAtt = 0x0FFF0000

	if (iMatchMask == (KDriveAttExclude | KDriveAttMatchedFlags ) ) //If all drives are excluded.

		return KErrNotFound;

	FOREVER

		{

		found =0;

		TInt currentDrive=iCurrentDrive;

		if (iCurrentDrive==-1)

			currentDrive=EDriveZ;

		if (currentDrive<=-2)

			return(KErrNotFound);	

		iCurrentDrive--;

		if (!iDrvList[currentDrive])

			continue;

		TInt err = iFs->Drive(driveInfo,currentDrive);

		if(iMatchMask == 0)

			{

			if (iDrvList[currentDrive] & KDriveAttRemote)

				continue;									// NOT allowed on REMOTE DRIVE

			if ((iDrvList[currentDrive] & (KDriveAttLocal|KDriveAttRom))==0)

				continue;

			}

		else 	

			{									

			if(matchedFlags != 0 )

				{

				switch(matchedAtt)

					{ //found ==0 means that this drive attributes didn't match the flags

					case KDriveAttExclude :

						found = (driveInfo.iDriveAtt & matchedFlags ) ? 0:iDrvList[currentDrive] ;

						break;

					case 0:

						found = (driveInfo.iDriveAtt & matchedFlags) ? iDrvList[currentDrive]:0 ;

						break;

					case KDriveAttExclusive :

						if(matchedFlags != KDriveAttLogicallyRemovable)

							{

							found = ((TUint8)(driveInfo.iDriveAtt) == matchedFlags)  ?iDrvList[currentDrive]:0;

							}

						else 

							{

							found = (driveInfo.iDriveAtt == (matchedFlags | KDriveAttRemovable) )  ?iDrvList[currentDrive]:0;

							}

						break;

					case KDriveAttExclude | KDriveAttExclusive:

						if(matchedFlags != KDriveAttLogicallyRemovable)

							{

							found = ((TUint8)(driveInfo.iDriveAtt) == matchedFlags)  ?0:iDrvList[currentDrive];

							}

						else 

							{

							found = (driveInfo.iDriveAtt == (matchedFlags | KDriveAttRemovable))  ?0:iDrvList[currentDrive];

							}

						break;

					default: 

						Panic(EFindFileIllegalAttribute);			

					}

				}

			else  //matchedFlags == 0.

				{

				if (matchedAtt== KDriveAttAll)		

					found= iDrvList[currentDrive];

				else 

					Panic(EFindFileIllegalAttribute);		

				}

			if( found == 0)

				continue;			

			}

		// Don't scan a locked drive

		if( err == KErrNone)

			{		

			if(driveInfo.iMediaAtt & KMediaAttLocked)

				continue;

			}

		TParse fileName;

		TChar driveLetter;

		RFs::DriveToChar(currentDrive,driveLetter);

		TBuf<4> drive;

		drive.SetLength(2);

		drive[0]=(TText)driveLetter;

		drive[1]=':';

		TPtrC nameAndExt(iFile.NameAndExt());

		TPtrC path(iFile.Path());

		fileName.Set(nameAndExt,&path,&drive);

		iFile=fileName;

		TInt r=DoFindInDir();

		if (r==KErrNone)

			return(KErrNone);

		if (r!=KErrNotFound)

			return(r);

		}	

	}

/**

Constructor taking a file server session.

@param aFs File server session.

*/

	{

	iFile.Set(_L(""),NULL,NULL);

	}

TInt TFindFile::DoFindByPath(const TDesC& aFileName,const TDesC* aPath)

//

// Look for a file in each directory in the path

// Make initial check for aFileName in the current directory

//

	{

	if (aFileName.Length() <= 0) 

		return(KErrArgument);

	TInt r=iFile.Set(aFileName,NULL,NULL);

	if (r!=KErrNone)

		return(r);

	iPath=aPath;

	iPathPos=0;

	iMode=EFindByPath;

	r=DoFindInDir();	

	r=DoFindNextInPath();

	return(r);

	}

//

// Look for aFileName in aDir on each connected drive

// Make initial check for aFileName in aDir on current drive

//

	{

	if (aFileName.Length() <= 0) 

		return(KErrArgument);

	TInt r=iFs->Parse(aFileName,aDir,iFile);

	if (r!=KErrNone)

		return(r);

	TInt searchResult=DoFindInDir();

		return(searchResult);

	r=iFs->DriveList(iDrvList,KDriveAttAll);

	if (r!=KErrNone)

		return(r);

	TInt drive;

	r=RFs::CharToDrive(iFile.Drive()[0],drive);

	if (r!=KErrNone)

		return(r);

	iDrvList[drive]=0; // Drive 'drive' has already been searched

	iCurrentDrive=EDriveY;

	iMode=EFindByDrives;

	if (searchResult==KErrNone)

		return(KErrNone);

	return(DoFindNextInDriveList());

	}

/**

Searches for a file/directory in one or more directories in the path.

The search ends when the file/directory is found, or when every directory

specified in the path list has been unsuccessfully searched.

Notes:

1. For the equivalent search using wildcards, use FindWildByPath().

2. After a file has been found, use TFindFile::File() to get the fully qualified path of the file. To

   search for the next occurrence, use TFindFile::Find().

@param aFileName The filename to search for. If this specifies a directory as well

                 as a filename, then that directory is searched first.

@param aPath     A list of directories to be searched. Paths in this list must

                 be separated by a semicolon character, but a semicolon is not

                 required after the	final path. The directories are searched in

                 the order in which they occur in the list. If a path in

                 the list contains a drive letter, that drive alone is searched.

                 If a path contains no drive letter, the function searches for

                 the file in that directory on every available drive in turn,

                 beginning with drive Y:, in descending alphabetical order

                 and ending with drive Z:.When path is empty then session path 

                 will be used for the search.

@return KErrNone, if the filename was found;

        KErrNotFound, if the filename was not found.

        KErrArgument, if the filename is empty. 

@see TFindFile::FindWildByPath

@see TFindFile::File

@see TFindFile::Find

*/

	{

	iDir=NULL;

	}

/**

Searches for a file/directory in a directory on all available drives.

The	search ends when the file/directory is found, or when every available

drive has been unsuccessfully searched.

Notes:

1. A drive letter may be specified in aDirPath.

   If a drive is specified, then that drive is searched first. If no drive is

   specified, then the drive specified in the session path is searched first.

   The remaining available drives are then searched in descending alphabetical

   order, from Y: to A:, and ending with the Z: drive. Using function SetFindMask

   it is possible to specify a combination of attributes that the drives to be 

   searched must match.

2. For the corresponding search using wildcards, use FindWildByDir().

3. After a file has been found, use TFindFile::File() to get the fully

   qualified path and filename. To search for the next occurrence,

   use TFindFile::Find().

@param aFileName The filename to search for. If a path is specified, it

                 overrides the path specified in aDir. If no path is specified,

                 the path contained in aDir is used.

@param aDir      A single path indicating a directory to be searched on each

                 drive.When path is empty then session path will be used for the search.

@return KErrNone, if the file was found, otherwise one of the system-wide error codes, including:

        KErrNotFound, if the file was not found;

        KErrPermissionDenied, if the client does not have appropriate capabilities for the directory to be searched;

		KErrArgument, if the filename is empty.

@see TFindFile::FindWildByDir()

@see TFindFile::File()

@see TFindFile::Find()

@see TFindFile::SetFindMask()

*/

	{

	iDir=NULL;

	}

/**

Notes:

                 directory is searched first.

@return KErrNone, if one or more matching files was	found;

        KErrNotFound, if no matching file was found in any of the directories.

        KErrArgument, if the filename is empty.

@see TFindFile::FindWild

@see TFindFile::File

@see TEntry::iName

@see TFindFile::SetFindMask()

*/

	{

	iDir=&aDir;

	}

/**