Blame Scripts/Functions/cli_getPathComponent.sh

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#!/bin/bash
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#
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# cli_getPathComponent.sh -- This function standardizes the way
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# directory structures are organized inside the working copy of CentOS
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# Artwork Repository. You can use this function to retrive information
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# from paths (e.g., releases, architectures and theme artistic motifs)
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# or the patterns used to build the paths.
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#
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# Copyright (C) 2009, 2010, 2011 The CentOS Artwork SIG
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at
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# your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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# ----------------------------------------------------------------------
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# $Id$
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# ----------------------------------------------------------------------
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function cli_getPathComponent {
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    # Define short options.
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    local ARGSS=''
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    # Define long options.
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    local ARGSL='release,release-major,release-minor,release-pattern,architecture,architecture-pattern,motif,motif-name,motif-release,motif-pattern'
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    # Initialize ARGUMENTS with an empty value and set it as local
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    # variable to this function scope.
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    local ARGUMENTS=''
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    # Define release pattern.
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    local RELEASE="(([[:digit:]]+)(\.([[:digit:]]+)){,1})"
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    # Define architecture pattern. Make it match the architectures the
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    # CentOS distribution is able to be installed on.
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    local ARCHITECTURE="(i386|x86_64)"
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    # Define pattern for themes' artistic motifs.
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    local THEME_MOTIF="Identity/Images/Themes/(([[:alnum:]]+)/(${RELEASE}))"
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    # Redefine ARGUMENTS variable using current positional parameters. 
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    cli_parseArgumentsReDef "$@"
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    # Redefine ARGUMENTS variable using getopt output.
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    cli_parseArguments
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    # Redefine positional parameters using ARGUMENTS variable.
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    eval set -- "$ARGUMENTS"
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    # Define location we want to apply verifications to.
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    local LOCATION=$(echo $@ | sed -r 's!^.*--[[:space:]](.+)$!\1!')
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    # Look for options passed through positional parameters.
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    while true;do
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        case "$1" in
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            --release )
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                echo "$LOCATION" | egrep "${RELEASE}" | sed -r "s!.*/${RELEASE}/.*!\1!"
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                shift 1
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                break
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                ;;
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            --release-major )
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                echo "$LOCATION" | egrep "${RELEASE}" | sed -r "s!.*/${RELEASE}/.*!\2!"
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                shift 1
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                break
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                ;;
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            --release-minor )
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                echo "$LOCATION" | egrep "${RELEASE}" | sed -r "s!.*/${RELEASE}/.*!\4!"
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                shift 1
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                break
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                ;;
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            --release-pattern )
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                echo "${RELEASE}"
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                shift 1
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                break
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                ;;
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            --architecture )
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                echo "$LOCATION" | egrep "${ARCHITECTURE}" | sed -r "s!${ARCHITECTURE}!\1!"
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                shift 1
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                break
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                ;;
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            --architecture-pattern )
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                echo "${ARCHITECTURE}"
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                shift 1
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                break
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                ;;
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            --motif )
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                echo "$LOCATION" | egrep "${THEME_MOTIF}" | sed -r "s!.*${THEME_MOTIF}.*!\1!"
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                shift 1
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                break
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                ;;
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            --motif-name )
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                echo "$LOCATION" | egrep "${THEME_MOTIF}" | sed -r "s!.*${THEME_MOTIF}.*!\2!"
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                shift 1
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                break
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                ;;
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            --motif-release )
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                echo "$LOCATION" | egrep "${THEME_MOTIF}" | sed -r "s!.*${THEME_MOTIF}.*!\3!"
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                shift 1
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                break
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                ;;
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            --motif-pattern )
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                echo "${THEME_MOTIF}"
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                shift 1
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                break
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                ;;
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        esac
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    done
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}