# Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# This component and the accompanying materials are made available

# under the terms of "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:

#

use strict;

package		wrappermakefile;

require Exporter;

@wrappermakefile::ISA=qw(Exporter);

@wrappermakefile::EXPORT=qw(

	GenerateWrapper

);

use Output;

my (@ExtensionUsedBefore);

my $ExtTemplatesPath="$ENV{EPOCROOT}epoc32/tools/makefile_templates/";

$ExtTemplatesPath=~ s/\\/\//g;  # convert win32 slashes to unix slashes

my $DieRef;

our $ExtMakefileMissing = 0;

# Add prototyes to avoid -w warnings

sub GenerateWrapper($$$$@);  

sub ReadMetaFile($$$$);

sub GenerateWrapper($$$$@) {	

	my ($Plat,$OutDir, $ErrorString, $dieRef, @ExtensionBlockData) = @_;

	$DieRef = $dieRef;

#	Generates a makefile which contains the settings for each invocation of an extension and calls

#	through to the extension template makefile in /epoc32/tools/makefile_templates.

#	@ExtensionBlockData holds the settings (makefile MACROs) defined within the start..end block in the bld.inf.

	my $ExtHeader = shift(@ExtensionBlockData);

	if (uc $ExtHeader->[0] ne "EXTENSION") {

		&main::FatalError("$ErrorString : Extension Template blocks must contain the 'extension' keyword.\n");

	}

	if ($ExtHeader->[1] eq "") {

		&main::FatalError("$ErrorString : The 'extension' does not have a name, the correct format is: 'start extension <name>'.\n");

	}

	my $ExtName = $ExtHeader->[1];

#	Ensure that each extension invocation is uniquely identified by means of the global array 

#	ExtensionUsedBefore.

	my $Count=0;

	push @ExtensionUsedBefore, $ExtName.$Plat;

	foreach my $item(@ExtensionUsedBefore) {

		if ($item eq $ExtName.$Plat) {

			$Count = $Count + 1;

		}

	}

#	Process the meta information for this extension template.

	my %Data;

	my %WrapperMakefileData = ReadMetaFile($ExtName, $ErrorString, \$Data{Makefile},$dieRef);

	if ($ExtMakefileMissing)

	{

		main::ExtensionMakefileMissing($ExtMakefileMissing);

		return;

	}

	$Data{Ext}='.MK';

	$Data{Base}=$ExtName."_".$Plat."_".$Count;

	$Data{Path}=$OutDir."wrappermakefiles/";

#	Process ExtensionBlockData

	foreach my $ExtBlockStatement (@ExtensionBlockData) {

		my $Key = shift(@$ExtBlockStatement);

		$WrapperMakefileData{$Key}=$ExtBlockStatement;

	}

#	CreateWrapperMakefile

	&Output("# Bldmake generated wrapper makefile\n\n");

	foreach my $Key (keys (%WrapperMakefileData))

	{

			&Output("$Key = "); 

			foreach my $item(@{$WrapperMakefileData{$Key}}) {

				&Output(" $item");

			}

			&Output("\n");

	}

	my $Filename = lc("$ExtName$Data{Ext}");

	&Output("\ninclude $ExtTemplatesPath$Filename"); 

	my $Path = lc("$Data{Path}");

	&main::WriteOutFileL(lc ($Path.$ExtName."_".$Plat."_".$Count.$Data{Ext}));

	%WrapperMakefileData = ();

	return %Data;  

}

#  Read extension meta file data

sub ReadMetaFile($$$$) {

	my ($ExtName, $ErrorString, $Makefile,$dieRef) = @_;

#	Parse the .meta file (found via $ExtName) for this extension template and return a hash 

#	containing the default values (makefile MACROs) for this template.

#	$Makefile is updated to indicate whether this a gnumake or nmake makefile.

	my %MetaData;

	my $Filename = lc("$ExtName");

	$ExtMakefileMissing=0;

	if (!open(METAFILE,"$ExtTemplatesPath$Filename.meta"))

	{

		&main::WarnOrDie($dieRef, "$ErrorString : Extension: $ExtName - cannot open META file: $ExtTemplatesPath$Filename.meta\n");

		$ExtMakefileMissing = 1;

		return;

	}

	LINE: while (<METAFILE>) {

		chomp;		

		my @Elements = split(/\s*\s\s*/);		

		my $Keyword = uc shift(@Elements);

		if ((! $Keyword) or ($Keyword =~ m/^#/)) {

			next LINE;

		}

		if ($Keyword eq "MAKEFILE") {	

			my $Makefiletype = uc shift(@Elements);		

			if ($Makefiletype eq "GNUMAKE") {

				$$Makefile=1;

			}

			if ($Makefiletype eq "NMAKE") {

				$$Makefile=2;

			}

		}

		elsif ($Keyword eq "OPTION") {

			my $Key = shift(@Elements);

			if ((! $Key) or (! $Elements[0])) {

					&main::FatalError("$ErrorString : There is a syntax error in the META file ($ExtTemplatesPath$Filename.meta) for this extension ($ExtName) - the correct format for default options is: 'option <key> <value>'");

				}

			my @Values = @Elements;

			$MetaData{$Key}=\@Values;

		} 

		elsif (($Keyword eq "TECHSTREAM") or ($Keyword eq "PLATFORM")) {

			# not used

		}

		else {

			&main::FatalError("$ErrorString : There is a syntax error in the META file ($ExtTemplatesPath$Filename.meta) for this extension ($ExtName) - unrecognised keyword:$Keyword");	

		}

	}

	if (! $$Makefile) {

		&main::FatalError("$ErrorString : There is a syntax error in the META file ($ExtTemplatesPath$Filename.meta) for this extension ($ExtName) - makefile type not specified [gnumake|nmake]");

	}

	close(METAFILE) or &main::FatalError("$ErrorString : Extension: $ExtName - cannot close Meta File:$ExtTemplatesPath$ExtName.meta\n");

	return %MetaData;

}

1;