#!/bin/bash

######################################################################

#

#   palette_getColors.sh -- This function takes one palette produced

#   by Gimp (e.g., syslinux.gpl) as input and outputs a list of colors

#   in #rrggbb format set in the fourth column of it. 

#

#   Written by:

#   * Alain Reguera Delgado <al@centos.org.cu>, 2009-2013

#

# Copyright (C) 2009-2013 The CentOS Artwork SIG

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or (at

# your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

#

######################################################################

function palette_getColors {

    local COLOR=''

    local PALETTE_COLORS=''

    local PALETTE=${1}

    if [[ -f ${PALETTE} ]];then

        # Retrieve the fourth column from GPL palette. The fourth

        # column of a GPL palette contains the palette commentary

        # field. The palette commentary field can be anything, but for

        # the sake of our own convenience we use it to store the color

        # value in hexadecimal format (e.g., rrggbb).  Notice that you

        # can put your comments from the fifth column on, using an

        # space as field separator.

        PALETTE_COLORS=$(sed -r '1,/^#/d' ${PALETTE} \

            | gawk '{ printf "%s\n", $4 }')

    else

        # Redefine default background color using The CentOS Project

        # default color then.

        PALETTE_COLORS='#204c8d'

    fi

    # Be sure all color information be output in the #rrggbb format.

    for COLOR in ${PALETTE_COLORS};do

        if [[ ! ${COLOR} =~ '^#' ]];then

            COLOR="#${COLOR}"

        fi

        echo "${COLOR}"

    done

}