#!/bin/bash

#

# cli_checkFiles.sh -- This function checks file existence.

#

# 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_checkFiles {

    # Define variables as local to avoid conflicts outside.

    local FILE="$1"

    local TYPE="$2"

    local ACTION="$3"

    local OPTIONS="$4"

    local MESSAGE=''

    # Check amount of paramaters passed. At least one argument should

    # be passed.

    if [[ $# -lt 1 ]];then

        cli_printMessage "cli_checkFiles: `gettext "You need to provide one argument at least."`"

        cli_printMessages "$(caller)" "AsToKnowMoreLine"

    fi

    # Define default action to take, if it is not specified.

    if [[ ! "$3" ]] || [[ "$3" == '' ]];then

        ACTION=`gettext "Checking"`

    fi

    # Check file provided.

    if [[ $FILE == '' ]];then

        MESSAGE="`gettext "Unknown"`"

        cli_printMessage "${ACTION}: $MESSAGE" "AsRegularLine"

        return 1

    fi

    # Check file types.

    case $TYPE in

        d | directory )

            # File exists and is a directory

            if [[ ! -d $FILE ]];then

                MESSAGE="`eval_gettext "The directory \\\"\\\$FILE\\\" doesn't exist."`"

            fi

            ;;

        f | regular-file )

            # File exists and is a regular file.

            if [[ ! -f $FILE ]];then

                MESSAGE="`eval_gettext "The file \\\"\\\$FILE\\\" is not a regular file."`"

            fi

            ;;

        h | symbolic-link )

            # File exists and is a symbolic link.

            if [[ ! -h $FILE ]];then

                MESSAGE="`eval_gettext "The file \\\"\\\$FILE\\\" is not a symbolic link."`"

            fi

            ;;

        fh )

            # To exist, file should be a regular file or a symbolic link.

            cli_checkFiles $FILE 'f' '' '--quiet'

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

                cli_checkFiles $FILE 'h' '' '--quiet'

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

                    MESSAGE="`eval_gettext "The file \\\"\\\$FILE\\\" doesn't exist."`"

                fi

            fi

            ;;

        * )

            # File exists.

            if [[ ! -a $FILE ]];then

                MESSAGE="`eval_gettext "The file \\\"\\\$FILE\\\" doesn't exist."`"

            fi

    esac

    # If there is some message print it when there is no `--quiet'

    # option passed as fourth argument. 

    if [[ "$MESSAGE" == '' ]];then

        for OPTION in $OPTIONS;do 

            case $OPTION in

                '--quiet' )

                    return 0

            esac

        done

        cli_printMessage "${ACTION}: $FILE" "AsRegularLine"

        return 0

    else

        for OPTION in $OPTIONS;do 

            case $OPTION in

                '--quiet' )

                    return 1

            esac

        done

        cli_printMessage "${ACTION}: $MESSAGE" "AsRegularLine"

        return 1

    fi

}