#!/bin/bash

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

#

#   tcar - The CentOS Artwork Repository automation tool.

#   Copyright © 2014 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.

#

#   Alain Reguera Delgado <al@centos.org.cu>

#   39 Street No. 4426 Cienfuegos, Cuba.

#

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

# Take 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.

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

}