# Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# This component and the accompanying materials are made available

# 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:

# prepocessor.pm

# Used to allow us to access and manipulate other pre processors

# 

#

package Preprocessor;

require Exporter;

@ISA=qw(Exporter);

@EXPORT=qw(

	PreprocessorToUseId PreprocessorToUseExe PreprocessorToUsePath 

);

#

# Returns the preprocessor name.

# (After checking it is valid)

#

sub PreprocessorToUseId()

{

    $env="0";

    if (defined $ENV{ALT_PRE})

    {

	$env = $ENV{ALT_PRE};

    }

    if ( $env eq "1" ) # Only a value of 1 will use alternative preprocessor

    {

        return "MINGW_NO_CYGWIN";

    }

    else

    {

        return "DEFAULT";

    }

}

#

# Returns the preprocessor exe name.

# without the exe extension.

#

sub PreprocessorToUseExe()

{

    $env = &PreprocessorToUseId();

    if ( ($env eq "DEFAULT") )

    {

        return "cpp";

    }

    elsif ( $env eq "MINGW_NO_CYGWIN" )

    {

        return "scpp";

    }

}

#

# Returns the full path and exe of the preprocessor relative to the 

# gcc\bin path.

#

sub PreprocessorToUsePath()

{

    $env = &PreprocessorToUseId();

    if ( ($env eq "") || ($env eq "DEFAULT") )

    {

        return "";

    }

    elsif ( $env eq "MINGW_NO_CYGWIN" )

    {

        return ""; # Currently same path as default (different name though !)

    }

    else

    { # Nothing really to use.

        die

            "Unable to find the correct pre processor\n",

    }

}

1;