commonfunctions.cpp

mopoid game symbian os application development

/*
========================================================================
 Name        : CommonFunctions.cpp
 Author      : 
 Copyright   : 
 Description : Useful functions that are necessary for many parts of the game.
 License   : 
========================================================================
*/
#include "CommonFunctions.h"

const TInt NCommonFunctions::GetStoreDriveL(RFs& aFs)
{
    TInt driveNum;
    // Get the drive as a character
    TChar driveChar = NCommonFunctions::GetStoreDriveCharL(aFs);
    // And convert it to an integer to get the drive number
    aFs.CharToDrive(driveChar, driveNum);
    return driveNum;
}

const TChar NCommonFunctions::GetStoreDriveCharL(RFs& /*aFs*/)
{
    // Symbian OS 9.2: could use: return aFs.GetSystemDrive();

    // Get the full name and path of the application
    TFileName appNamePath = CEikonEnv::Static()->EikAppUi()->Application()->AppFullName();
#if defined(__WINS__) // if the resources are in emulators c (not z)
    appNamePath.Replace(0,1,_L("c"));
#endif
	return appNamePath[0];
}

const void NCommonFunctions::AddPrivateDirL(RFs& aFs, const TDesC& aFilename, RBuf& aCompleteName)
	{
	// Retrieve the full drive + path + filename of the application
    TFileName appNamePath = CEikonEnv::Static()->EikAppUi()->Application()->AppFullName();
    
    if (appNamePath.Length() == 0)
    	User::Leave(KErrGeneral);
    
#if defined(__WINS__)
    // The emulator returns z as the drive, as for it, applications
    // are installed on the ROM-drive (z).
    // However, the resources are placed in the simulated c:\-drive,
    // so replace the drive in case we're running within the emulator
    appNamePath.Replace(0,1,_L("c"));
#endif
	
	// Make sure the private path exists on the drive we need
    // Would actually not be needed, as we copy files into the
    // private directory during the installation process, so we
    // could be sure that it's here. But it's always better to 
    // make sure.
    TInt driveNum;
    aFs.CharToDrive(appNamePath[0], driveNum);
    aFs.CreatePrivatePath(driveNum);
    
    // Reset the RBuf-variable and create it with the required size
    aCompleteName.Close();
    aCompleteName.CreateL(KMaxPath);

    // Get the private path, does not contain the drive
	aFs.PrivatePath( aCompleteName );

    // Insert the drive to the private path, otherwise it'd be missig
	aCompleteName.Insert(0, appNamePath.Left(2));

    // Add the filename to the path, so that we now have a full URI, containing
    // the drive, path and filename
	aCompleteName.Append(aFilename);
	}


const void NCommonFunctions::AddResourceDirL(const TDesC& aFilename, RBuf& aCompleteName)
	{
	TFileName resourceFileName = CEikonEnv::Static()->EikAppUi()->Application()->ResourceFileName();
#if defined(__WINS__) // if the resources are in emulators c (not z)
	//resourceFileName.Replace(0,1,_L("c"));
#endif
	resourceFileName = BaflUtils::DriveAndPathFromFullName(resourceFileName);

    // Reset the RBuf-variable and create it with the required size
    aCompleteName.Close();
    aCompleteName.CreateL(resourceFileName, resourceFileName.Length() + aFilename.Length());
    aCompleteName.Append(aFilename);
	}