#!/bin/bash

#

# cli_printCopyrightInfo.sh -- This function outputs the copyright

# information of content produced by the centos-art command-line

# interface.

#

# As I understand, the copyright exists to make people create more.

# The copyright gives creators the legal power over their creations

# and so the freedom to distribute them under the ethical terms the

# creator considers better. 

#

# At this moment I don't feel very sure about this legal affairs, but

# need to decide what copyright information the centos-art will

# output. So, I'm taking the wiki (wiki.centos.org) copyright

# information as reference.

#

# Copyright (C) 2009, 2010, 2011 The CentOS Project

#

# 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.

#

# ----------------------------------------------------------------------

# $Id$

# ----------------------------------------------------------------------

function cli_printCopyrightInfo {

    case "$1" in

        '--license' )

            # Output default license name used by all image-based

            # creations inside CentOS Artwork Repository.

            echo "Creative Common Attribution-ShareAlike 3.0"

            ;;

        '--license-url' )

            # Ouput default license url used by all image-based

            # creations inside the CentOS Artwork Repository.

            cli_printUrl --cc-sharealike

            ;;

        '--copyright-year-first' )

            # The former year when I (as part of The CentOS Project)

            # started to consolidate The CentOS Project Corporate

            # Visual Identity through the CentOS Artwork Repository.

            echo '2009'

            ;;

        '--copyright-year' | '--copyright-year-last' )

            # The last year when The CentOS Project stopped working in

            # its Corporate Visual Identity through the CentOS Artwork

            # Repository. That is something that I hope does never

            # happen, so assume the current year as last working year.

            date +%Y

            ;;

        '--copyright-year-range' )

            local FIRST_YEAR=$(cli_printCopyrightInfo '--copyright-year-first')

            local LAST_YEAR=$(cli_printCopyrightInfo '--copyright-year-last')

            echo "${FIRST_YEAR}-${LAST_YEAR}"

            ;;

        '--copyright-year-list' )

            local FIRST_YEAR=$(cli_printCopyrightInfo '--copyright-year-first')

            local LAST_YEAR=$(cli_printCopyrightInfo '--copyright-year-last')

            # Define full copyright year string based on first and

            # last year.

            local FULL_YEAR=$(\

                while [[ ${FIRST_YEAR} -le ${LAST_YEAR} ]];do

                    echo -n "${FIRST_YEAR}, "

                    FIRST_YEAR=$(($FIRST_YEAR + 1))

                done)

            # Prepare full copyright year string and print it out. 

            echo "${FULL_YEAR}" | sed 's!, *$!!'

            ;;

        '--copyright-holder' )

            # Output default copyright holder.

            echo "The CentOS Project"

            ;;

        '--copyright' | * )

            local YEAR=$(cli_printCopyrightInfo '--copyright-year')

            local HOLDER=$(cli_printCopyrightInfo '--copyright-holder')

            echo "Copyright © $YEAR $HOLDER"

            ;;

    esac

}