#!/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., 59 Temple Place, Suite 330, Boston, MA 02111-1307

# USA.

# 

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

# $Id$

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

function cli_readFileContent {

    local FILES="$1"

    # 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

        '--first-line' )

            cat "$FILES" | head -n 1

            ;;

        '--last-line' )

            cat "$FILES" | tail -n 1

            ;;

        '--copyright' )

            # This option prints the first line of a file, if it has a

            # copyright format. This option is mainly used to retrive

            # artistic motif author copyright note from artistic

            # motifs `authors.txt' file.

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

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

                cli_readFileContent "$FILES" '--first-line'

            fi

            ;;

        '--all-lines' | * )

            cat "$FILES"

    esac

}