#!/bin/bash
#
# cli_printCopyrightInfo.sh -- This function standardizes the
# copyright information used by centos-art.sh script.
#
# As far 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 confident about this legal affairs and their legal
# implications, but I need to decide what copyright information the
# centos-art.sh script will print out. So, in that sake, I'll assume
# the same copyright information used by The CentOS Wiki
# (http://wiki.centos.org/) 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 )

            # Print out the name of the license used by to release the
            # content produced by centos-art.sh script, inside CentOS
            # Artwork Repository.
            echo "`gettext "Creative Common Attribution-ShareAlike 3.0 License"`"
            ;;

        --license-url )

            # Print out the url of the license used by to release the
            # content produced by centos-art.sh script, inside 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 "${COPYRIGHT_YEAR_FIRST}"
            ;;

        --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 ${COPYRIGHT_HOLDER}
            ;;

        --copyright-holder-predicate )

            local HOLDER=$(cli_printCopyrightInfo '--copyright-holder')
            echo "${HOLDER}. `gettext "All rights reserved."`"
            ;;

        --copyright )

            local YEAR=$(cli_printCopyrightInfo '--copyright-year-last')
            local HOLDER=$(cli_printCopyrightInfo '--copyright-holder')
            echo "Copyright © ${YEAR} ${HOLDER}"
            ;;

    esac

}