#!/bin/bash

#

# cli_readFileContent.sh -- This function outputs content of files,

# passed as first argument, to standard output as specified by second

# argument.

#

# Copyright (C) 2009-2011 Alain Reguera Delgado

#

# 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_readFileContent {

    local FILES="$1"

    local PATTERN='Copyright (\(C\)|©) [0-9]+(-[0-9]+)? .+'

    # Verify existence of files but don't stop if it doesn't exist.

    cli_checkFiles "$FILES"

    # Print content of files to standard output.

    case "$2" in

        '--copyright-line' )

            cat "$FILES" | egrep "^ +${PATTERN}$" | head -n 1 | sed -r 's!^ +!!'

            ;;

        '--last-line' )

            cat "$FILES" | tail -n 1

            ;;

        '--copyright-year' )

            if [[ $(cli_readFileContent "$FILES" '--copyright-line') =~ "^${PATTERN}$" ]];then

                cli_readFileContent "$FILES" '--copyright-line' | cut -d' ' -f3

            fi

            ;;

        '--copyright-holder' )

            if [[ $(cli_readFileContent "$FILES" '--copyright-line') =~ "^${PATTERN}$" ]];then

                cli_readFileContent "$FILES" '--copyright-line' | cut -d' ' -f4-

            fi

            ;;

        '--all-lines' | * )

            cat "$FILES"

            ;;

    esac

}