#

# Copyright (c) 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:

# 

# This file converts the input stored in $(OPTIONS) variable into several different variables

# depending in the content.

#

# $(OPTIONS) variable is assumed to contain following syntax:

# -X,Y filename.ext -X filename.ext

#

# where X and Y are numbers for the color depth.

# The first number is the actual color depth of the file and the second is the color depth

# of the mask file. The second number (and the comma) may or may not be defined.

#

# Since there are color depths defined for both the actual file and it's mask file, we need

# to determine also the name of the mask file somehow. 

# It is assumed that depending on the mask file color depth (Y) 

# the mask file has a different string appended to it's file name.

#

# These mask file strings must be defined in the variable $(MASK_OPTION_Y) where Y is the 

# mask file color depth.

#

#

# Options will be splitted into variables of $(FILES) which contains the filenames after the

# options and to OPTION_$(FILE) where $(FILE) is each of the $(FILES) and 

# $(OPTION1_$(FILE)) and $(OPTION2_$(FILE)) depending whether the option for the file

# was infact 2 options separated with comma or not.

# 

# Example: lets consider following variables are defined:

#

# MASK_OPTION_1=_mask

# MASK_OPTION_8=_mask_soft

# 

# And that our input is:

# OPTIONS=-c8,1 calc_paper -c8,8 display_side_l -c8 display_center

#

# The option reader would go through the $(OPTIONS) and fill out following variables:

#

# FILES=calc_paper display_side_l display_center

#

#

# OPTION_calc_paper=-c8,2

# OPTION1_calc_paper=-c8

# OPTION2_calc_paper=2

# OPTION1_calc_paper_mask=-2

#

# OPTION_display_side_l=-c8,8

# OPTION1_display_side_l=-c8

# OPTION2_display_side_l=8

# OPTION1_calc_paper_mask_soft=-8

#

# OPTION1_display_center=-c8

# Get files from the option list, i.e. everything that does not start with '-'

FILES := $(foreach OPTION,\

	$(OPTIONS),\

	$(filter-out -%, $(OPTION)))

#$(warning FILES $(FILES))

# Option list without files

OPTION_LIST_WITHOUT_FILES:=$(filter-out $(FILES), $(OPTIONS))

#$(warning OPTION_LIST_WITHOUT_FILES $(OPTION_LIST_WITHOUT_FILES))

# Strip out possible suffixes from all files

FILES:=$(basename $(FILES))

#$(warning FILES $(FILES))

# Get options for each file, in the form of OPTION_$FILE

$(foreach FILE,\

	$(FILES),\

	$(eval OPTION_$(FILE):=$(firstword $(OPTION_LIST_WITHOUT_FILES))) \

	$(eval OPTION_LIST_WITHOUT_FILES:=$(wordlist 2, $(words $(OPTION_LIST_WITHOUT_FILES)), $(OPTION_LIST_WITHOUT_FILES))) \

)

# If option consists of anything like *X,Y separate the parts from comma

# The part before the comma is in OPTION1_file, if no comma it is same as OPTION_file

# The possible part after the comma is in OPTION2_file

COMMA:=,

$(foreach FILE,\

	$(FILES),\

	$(eval SPACE_OPTIONS:=$(subst $(COMMA), ,$(OPTION_$(FILE)))) \

	$(eval OPTION1_$(FILE):=$(firstword $(SPACE_OPTIONS))) \

	$(eval OPTION2_$(FILE):=$(word 2,$(SPACE_OPTIONS))) \

)

# Generate mask files (from those files which had options after the comma)

$(foreach FILE,\

	$(FILES),\

	$(eval $(FILE)_MASKFILE:=$(FILE)$(MASK_OPTION_$(OPTION2_$(FILE)))) \

)

# Filter out other than mask files

MASKFILES:=$(filter %$(MASK_OPTION_1) %$(MASK_OPTION_8), $(foreach FILE, $(FILES), $($(FILE)_MASKFILE)))

#$(warning MASKFILES $(MASKFILES))

# Create options to mask files based on the option given after comma to the corresponding original file

$(foreach MASKFILE,\

	$(MASKFILES),\

	$(eval OPTION1_$(MASKFILE):=-$(OPTION2_$(subst $(MASK_OPTION_1),,$(subst $(MASK_OPTION_8),,$(MASKFILE))))) \

)