#!/bin/bash

######################################################################

#

#   tcar - The CentOS Artwork Repository automation tool.

#   Copyright © 2014 The CentOS Artwork SIG

#

#   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.

#

#   Alain Reguera Delgado <al@centos.org.cu>

#   39 Street No. 4426 Cienfuegos, Cuba.

#

######################################################################

# Standardize files and directories name convection inside the working

# copy of CentOS Artwork Repository. As convection, regular files are

# written in lower-case and directories are written capitalized.  Use

# this function to sanitate the name of regular files and directories

# on paths you work with.

function tcar_getRepoName {

    # Define the name we want to apply verifications to.

    local NAME="${1}"

    # Avoid using options as it were names. When name value is empty

    # but an option is provided, the option becomes the first

    # positional argument and is evaluated as it were a name which is

    # something we need to prevent from happening.

    if [[ ${NAME} =~ '^-' ]];then

        return

    fi

    # Look for options passed through positional parameters.

    case "${2}" in

        -f|--basename )

            # Reduce the path passed to use just the non-directory

            # part of it (i.e., the last component in the path; _not_

            # the last "real" directory in the path).

            NAME=$(basename ${NAME})

            # Clean value.

            NAME=$(echo ${NAME} \

                | tr -s ' ' '_' \

                | tr '[:upper:]' '[:lower:]')

            ;;

        -d|--dirname )

            local DIR=''

            local DIRS=''

            local CLEANDIRS=''

            local PREFIXDIR=''

            # In order to sanitate each directory in a path, it is

            # required to break off the path string so each component

            # can be worked out individually and later combine them

            # back to create a clean path string.

            # Reduce path information passed to use the directory part

            # of it only.  Of course, this is applied if there is a

            # directory part in the path.  Assuming there is no

            # directory part but a non-empty value in the path, use

            # that value as directory part and clean it up.

            if [[ ${NAME} =~ '.+/.+' ]];then

                # When path information is reduced, we need to

                # consider that absolute paths contain some

                # directories outside the working copy directory

                # structure that shouldn't be sanitized (e.g., /home,

                # /home/centos, /home/centos/artwork,

                # /home/centos/artwork/turnk, trunk, etc.) So, we keep

                # them unchanged for later use.

                PREFIXDIR=$(echo ${NAME} \

                    | sed -r "s,^((${TCAR_USER_WRKDIR}/)?(trunk|branches|tags)/)?.+$,\1,")

                # ... and remove them from the path information we do

                # want to sanitate.

                DIRS=$(dirname "${NAME}" \

                    | sed -r "s!^${PREFIXDIR}!!" \

                    | tr '/' ' ')

            else

                # At this point, there is not directory part in the

                # information passed, so use the value passed as

                # directory part as such. 

                DIRS=${NAME}

            fi

            for DIR in ${DIRS};do

                # Sanitate directory component.

                if [[ ${DIR} =~ '^[a-z]' ]];then

                    DIR=$(echo ${DIR} \

                        | tr -s ' ' '_' \

                        | tr '[:upper:]' '[:lower:]' \

                        | sed -r 's/^([[:alpha:]])/\u\1/')

                fi

                # Rebuild path using sanitized values.

                CLEANDIRS="${CLEANDIRS}/${DIR}"

            done

            # Redefine path using sanitized values.

            NAME=$(echo ${CLEANDIRS} | sed -r "s!^/!!")

            # Add prefix directory information to sanitate path

            # information.

            if [[ "${PREFIXDIR}" != '' ]];then

                NAME=${PREFIXDIR}${NAME}

            fi

        ;;

    esac

    # Print out the clean path string.

    echo ${NAME}

}