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#!/bin/bash
#
# cli_getPathComponent.sh -- This function standardizes the way
# directory structures are organized inside the working copy of CentOS
# Artwork Repository. You can use this function to retrive information
# from paths (e.g., releases, architectures and theme artistic motifs)
# or the patterns used to build the paths.
#
# Copyright (C) 2009, 2010, 2011 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.
#
# ----------------------------------------------------------------------
# $Id$
# ----------------------------------------------------------------------
function cli_getPathComponent {
# Define short options.
local ARGSS=''
# Define long options.
local ARGSL='release,release-major,release-minor,release-pattern,architecture,architecture-pattern,motif,motif-name,motif-release,motif-pattern'
# Initialize ARGUMENTS with an empty value and set it as local
# variable to this function scope.
local ARGUMENTS=''
# Define release pattern.
local RELEASE="(([[:digit:]]+)(\.([[:digit:]]+)){,1})"
# Define architecture pattern. Make it match the architectures the
# CentOS distribution is able to be installed on.
local ARCHITECTURE="(i386|x86_64)"
# Define pattern for themes' artistic motifs.
local THEME_MOTIF="Identity/Images/Themes/(([[:alnum:]]+)/(${RELEASE}))"
# Redefine ARGUMENTS variable using current positional parameters.
cli_parseArgumentsReDef "$@"
# Redefine ARGUMENTS variable using getopt output.
cli_parseArguments
# Redefine positional parameters using ARGUMENTS variable.
eval set -- "$ARGUMENTS"
# Define location we want to apply verifications to.
local LOCATION=$(echo $@ | sed -r 's!^.*--[[:space:]](.+)$!\1!')
# Look for options passed through positional parameters.
while true;do
case "$1" in
--release )
echo "$LOCATION" | egrep "${RELEASE}" | sed -r "s!.*/${RELEASE}/.*!\1!"
shift 1
break
;;
--release-major )
echo "$LOCATION" | egrep "${RELEASE}" | sed -r "s!.*/${RELEASE}/.*!\2!"
shift 1
break
;;
--release-minor )
echo "$LOCATION" | egrep "${RELEASE}" | sed -r "s!.*/${RELEASE}/.*!\4!"
shift 1
break
;;
--release-pattern )
echo "${RELEASE}"
shift 1
break
;;
--architecture )
echo "$LOCATION" | egrep "${ARCHITECTURE}" | sed -r "s!${ARCHITECTURE}!\1!"
shift 1
break
;;
--architecture-pattern )
echo "${ARCHITECTURE}"
shift 1
break
;;
--motif )
echo "$LOCATION" | egrep "${THEME_MOTIF}" | sed -r "s!.*${THEME_MOTIF}.*!\1!"
shift 1
break
;;
--motif-name )
echo "$LOCATION" | egrep "${THEME_MOTIF}" | sed -r "s!.*${THEME_MOTIF}.*!\2!"
shift 1
break
;;
--motif-release )
echo "$LOCATION" | egrep "${THEME_MOTIF}" | sed -r "s!.*${THEME_MOTIF}.*!\3!"
shift 1
break
;;
--motif-pattern )
echo "${THEME_MOTIF}"
shift 1
break
;;
esac
done
}