#!/bin/bash

#

# cli_getFilesList.sh -- This function defines the list of FILES to

# process.

#

# 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_getFilesList {

    local LOCATION=''

    local FILTER=''

    local FILES=''

    # If first argument is provided to cli_getFilesList, use it as

    # default location. Otherwise, if first argument is not provided,

    # location takes the action value (ACTIONVAL) as default.

    if [[ "$1" != '' ]];then

        LOCATION="$1"

    else

        LOCATION="$ACTIONVAL"

    fi

    # If second argument is provided to cli_getFilesList, use it as

    # default extension to look for files. Otherwise, if second

    # argument is not provided, use flag filter instead.

    if [[ "$2" != '' ]];then

        FILTER="$2"

    else

        FILTER="$FLAG_FILTER"

    fi

    # Define filter as regular expression pattern. When we use regular

    # expressions with find, regular expressions are evaluated against

    # the whole file path.  This way, when the regular expression is

    # specified, we need to build it in a way that matches the whole

    # path. Doing so, everytime we pass the `--filter' option in the

    # command-line could be a tedious task. Instead, in the sake of

    # reducing some typing, we prepare the regular expression here to

    # match the whole path using the regular expression provided by

    # the user as pattern. Do not use LOCATION variable as part of

    # regular expresion so it could be possible to use path expansion.

    # Using path expansion reduce the amount of places to find out

    # things and so the time required to finish the task.

    FILTER="^.+/${FILTER}$"

    # Define list of files to process. At this point we cannot verify

    # whether the LOCATION is a directory or a file since path

    # expansion coul be introduced to it. The best we can do is

    # verifying exit status and go on.

    FILES=$(find ${LOCATION} -regextype posix-egrep -regex "${FILTER}" | sort | uniq)

    # Output list of files to process.

    if [[ $? -eq 0 ]];then

        echo "$FILES"

    fi

}