#!/bin/bash

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

#

#   cli_printCopyrightInfo.sh -- This function standardizes the

#   copyright information printed on content produced 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 when it be requested about it.

#   So, in that sake, I'll assume the same copyright information used

#   by The CentOS Wiki (http://wiki.centos.org/) as reference.

#

#   Written by: 

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

#     Key fingerprint = D67D 0F82 4CBD 90BC 6421  DF28 7CCE 757C 17CA 3951

#

# Copyright (C) 2009-2013 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.

#

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

function cli_printCopyrightInfo {

    case "${1}" in

        --license )

            # Print the license name. 

            echo "`gettext "Creative Common Attribution-ShareAlike 3.0 License"`"

            ;;

        --license-url )

            # Print the url related to license name.

            cli_printUrl --cc-sharealike

            ;;

        --first-year )

            # The former year when I (as collaborator of The CentOS

            # Project) started to consolidate The CentOS Project

            # Corporate Visual Identity through the CentOS Artwork

            # Repository.

            echo '2009'

            ;;

        --year|--last-year)

            # 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 never happens,

            # so assume the current year as last working year.

            date +%Y

            ;;

        --years-range )

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

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

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

            ;;

        --years-list )

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

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

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

            ;;

        --holder )

            # Print centos-art.sh script default copyright holder.

            echo "The CentOS Project"

            ;;

        --holder-predicate )

            local HOLDER=$(cli_printCopyrightInfo --holder)

            echo "${HOLDER}. `gettext "All rights reserved."`"

            ;;

        * )

            local YEAR=$(cli_printCopyrightInfo --last-year)

            local HOLDER=$(cli_printCopyrightInfo --holder)

            echo "Copyright © ${YEAR} ${HOLDER}"

            ;;

    esac

}