#!/bin/bash

#

# cli_getRepoName.sh -- This function standardize file and directories

# name convenction inside the working copy of CentOS Artowrk

# Repository. As convenction, regular files are written in lower case

# and directories are written in lower case but with the first letter

# in upper case.  Use this function to sanitate the name of regular

# files and directory components of paths you work with.

#

# Copyright (C) 2009, 2010, 2011, 2012 The CentOS Project

#

# 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_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 sanitated  (e.g., /home,

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

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

                # them unchaged for later use.

                PREFIXDIR=$(echo $NAME \

                    | sed -r "s,^(($(cli_getRepoTLDir)/)?(trunk|branches|tags)/).+$,\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 sanitated values.

                CLEANDIRS="${CLEANDIRS}/$DIR"

            done

            # Redefine path using sanitated values.

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

            # Add prefix directory information to sanitated path

            # information.

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

                NAME=${PREFIXDIR}${NAME}

            fi

        ;;

    esac

    # Print out the clean path string.

    echo $NAME

}