#!/bin/bash

#

# cli.sh -- This function initiates centos-art command-line interface.

# Variables defined in this function are accesible by all other

# functions. The cli function is the first script executed by

# centos-art command-line onces invoked.

#

# 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 {

    # Initialize global variables.

    local FUNCNAM=''

    local FUNCDIR=''

    local FUNCDIRNAM=''

    local FUNCSCRIPT=''

    local FUNCCONFIG=''

    local ACTIONNAM=''

    local ACTIONVAL=''

    local ARGUMENTS=''

    # Initialize default value to verbosity flag. The verbosity flag

    # (--quiet) controls whether centos-art.sh script prints messages

    # or not.

    local FLAG_QUIET='false'

    # Initialize default value to answer flag. The answer flag (--yes)

    # controls whether centos-art.sh script does or does not pass

    # confirmation request points.

    local FLAG_YES='false'

    # Initialize default value to filter flag. The filter flag

    # (--filter) is used mainly to reduce the number of files to

    # process. The value of this variable is interpreted as

    # egrep-posix regular expression.  As initial value, we use a

    # regular expression that matches everything.

    local FLAG_FILTER='.+'

    # Redefine positional parameters stored inside ARGUMENTS variable.

    cli_doParseArgumentsReDef "$@"

    # Define function directory (FUNCDIR). The directory path where

    # functionalities are stored inside the repository.

    FUNCDIR=/home/centos/artwork/trunk/Scripts/Bash/Functions

    # Define function name (FUNCNAM) variable from first command-line

    # argument.  As convenction we use the first argument to determine

    # the exact name of functionality to call.

    FUNCNAM=$(cli_getRepoName "$1" 'f')

    if [[ "$FUNCNAM" =~ '^[a-z]+$' ]];then

        # Define function directory. 

        FUNCDIRNAM=$(cli_getRepoName $FUNCNAM 'd')

        # Define function file name.

        FUNCSCRIPT=${FUNCDIR}/${FUNCDIRNAM}/${FUNCNAM}.sh

        # Define function configuration directory. The function

        # configuration directory is used to store functionality's

        # related files.

        FUNCCONFIG=${FUNCDIR}/${FUNCDIRNAM}/Config

        # Check function script existence.

        cli_checkFiles $FUNCSCRIPT 'f'

    else

        # Print an error message and stop script execution.

        cli_printMessage "`eval_gettext "The function \\\`\\\$FUNCNAM' is not valid."`" 'AsErrorLine'

        cli_printMessage "$(caller)" 'AsToKnowMoreLine'

    fi

    # Remove the first argument passed to centos-art.sh command-line

    # in order to build optional arguments inside functionalities. We

    # start counting from second argument (inclusive) on.

    shift 1

    # Redefine positional parameters stored inside ARGUMENTS variable.

    cli_doParseArgumentsReDef "$@"

    # Define default text editors used by centos-art.sh script.

    if [[ ! "$EDITOR" =~ '/usr/bin/(vim|emacs|nano)' ]];then

        EDITOR='/usr/bin/vim'

    fi

    # Check text editor execution rights. 

    cli_checkFiles $EDITOR 'x'

    # Go for function initialization. Keep the cli_getFunctions

    # function calling after all variables and arguments definitions.

    cli_getFunctions

}