157 lines
3.6 KiB
Bash
Executable File
157 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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#------------------------------------------------------------------------------
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# ========= |
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# \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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# \\ / O peration | Website: https://openfoam.org
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# \\ / A nd | Copyright (C) 2020-2021 OpenFOAM Foundation
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# \\/ M anipulation |
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#------------------------------------------------------------------------------
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# License
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# This file is part of OpenFOAM.
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#
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# OpenFOAM is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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#
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# Script
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# foamVersionCompare
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#
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# Description
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# Compare two version numbers
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#
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#------------------------------------------------------------------------------
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usage() {
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cat<<USAGE
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Usage: ${0##*/} <version-1> <comparison> <version-2>
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Compare two version numbers. The <comparison> argument can be one of; eq
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(equal-to), lt (less-than), gt (greater-than), le (less-than-or-equal-to), or
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ge (greater-than-or-equal-to). Returns a successful exit code if true.
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Examples:
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foamVersionCompare 5.4.3 gt 5.5.1
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foamVersionCompare 5.4.3 gt 5.5.1 && echo True || echo False
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if foamVersionCompare 5.4.3 gt 5.5.1
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then
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echo "5.4.3 IS greater than 5.5.1"
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else
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echo "5.4.3 is NOT greater than 5.5.1"
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fi
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USAGE
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}
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error() {
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exec 1>&2
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while [ "$#" -ge 1 ]; do echo "$1"; shift; done
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usage
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exit 1
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}
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# Comparison functions
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_foamVersionCompare_eq=0
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_foamVersionCompare_lt=1
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_foamVersionCompare_gt=2
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_foamVersionCompare()
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{
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a=$1.
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b=$2.
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while [ -n "$a" ] || [ -n "$b" ]
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do
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ai="${a%%.*}"
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bi="${b%%.*}"
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[ -z "$ai" ] && ai=0
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[ -z "$bi" ] && bi=0
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if [ "$ai" -lt "$bi" ]
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then
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return $_foamVersionCompare_lt
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fi
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if [ "$ai" -gt "$bi" ]
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then
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return $_foamVersionCompare_gt
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fi
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a="${a#*.}"
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b="${b#*.}"
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done
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return $_foamVersionCompare_eq
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}
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_foamVersionEq()
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{
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_foamVersionCompare "$1" "$2"
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[ $? = $_foamVersionCompare_eq ] && return 0 || return 1
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}
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_foamVersionLt()
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{
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_foamVersionCompare "$1" "$2"
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[ $? = $_foamVersionCompare_lt ] && return 0 || return 1
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}
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_foamVersionGt()
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{
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_foamVersionCompare "$1" "$2"
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[ $? = $_foamVersionCompare_gt ] && return 0 || return 1
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}
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_foamVersionLe()
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{
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_foamVersionCompare "$1" "$2"
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[ $? != $_foamVersionCompare_gt ] && return 0 || return 1
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}
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_foamVersionGe()
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{
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_foamVersionCompare "$1" "$2"
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[ $? != $_foamVersionCompare_lt ] && return 0 || return 1
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}
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# Parse arguments
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[ $# -eq 3 ] || error "Incorrect arguments specified"
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v1=${1##*-}
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shift 1
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case $1 in
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-h | -help)
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usage && exit 0
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;;
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eq)
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compare=_foamVersionEq
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;;
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lt)
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compare=_foamVersionLt
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;;
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gt)
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compare=_foamVersionGt
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;;
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le)
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compare=_foamVersionLe
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;;
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ge)
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compare=_foamVersionGe
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;;
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*)
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error "unknown option: '$*'";
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;;
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esac
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shift 1
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v2=${1##*-}
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shift 1
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# Perform comparison and return
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$compare "$v1" "$v2" && exit 0 || exit 1
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