#!/bin/bash

#

# cli.sh -- This function initializes 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) 2009-2010 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 ACTION=''

    local OPTIONNAM=''

    local OPTIONVAL=''

    local REGEX=''

    # Define action variable using first argument (lowercase) value.

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

    # Define option name (OPTIONNAM) and option value (OPTIONVAL)

    # variables passed as second argument to the command line

    # interface when the format is `--option=value' without the value

    # part.

    if [[ "$2" =~ '^--[a-z-]+=.+$' ]];then

        # Define option name passed in the second argument.

        OPTIONNAM=$(echo "$2" | cut -d = -f1)

        # Define option value passed in the second argument. 

        OPTIONVAL=$(echo "$2" | cut -d = -f2-)

        # Check option value passed in the second argument.

        cli_checkOptionValue

    # Define option name (OPTIONNAM), and option value (OPTIONVAL)

    # variables passed as second argument to the command line

    # interface when the format is `--option' without the value part.

    elif [[ "$2" =~ '^--[a-z-]+=?$' ]];then

        # Define option name passed in the second argument.

        OPTIONNAM=$(echo "$2" | cut -d = -f1)

        # Define option value passed in the second argument. Assume

        # the local path. This saves you some typing when you are

        # in the place you want to apply your action on.

        if [[ $(pwd) =~ '^/home/centos/artwork/.+$' ]];then

            OPTIONVAL=$(pwd)

        else

            OPTIONVAL='/home/centos/artwork/trunk'

        fi

    # Define default option name (OPTIONNAM), and default option value

    # (OPTIONVAL) when no second argument is passed to the command

    # line interface.

    else

        # Define default option name.

        OPTIONNAM="default"

        # Define default option value.

        if [[ $(pwd) =~ '^/home/centos/artwork/.+$' ]];then

            OPTIONVAL=$(pwd)

        else

            OPTIONVAL='/home/centos/artwork/trunk'

        fi

    fi

    # Define regular expression (REGEX) used to reduce file

    # processing. If no regular expression is defined, set regular

    # expression to match everything.

    if [[ "$3" =~ '^--filter=.+$' ]];then

        REGEX=$(echo "$3" | cut -d '=' -f2-)

    else

        REGEX='.+'

    fi

    # If option value plus the filter value (REGEX) points to a valid

    # file, re-define the option value (OPTIONVAL) using the

    # directory/file absolute path combination instead. This let you

    # create documentation entries for files too.

    if [[ -f $OPTIONVAL/$REGEX ]];then

        OPTIONVAL=$OPTIONVAL/$REGEX

    fi

    # Define prefix for temporal files.

    TMPFILE="/tmp/centos-art-$$"

    # 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 to defined actions. Keep the cli_getActions function calling

    # after all variables and arguments definitions. Reason? To make

    # all variables and arguments definitions available inside

    # cli_Actions and subsequent function calls inside it.

    cli_getActions "$@"

}