This script allows version numbers to be compared. It is called in the
following way:
foamVersionCompare <version-1> <comparison> <version-2>
The <comparison> argument can be one of; eq (equal-to), lt (less-than),
gt (greater-than), le (less-than-or-equal-to), or ge
(greater-than-or-equal-to). The script returns a successful exit code if
the comparison evaluates as true.
Example usage:
if $WM_PROJECT_DIR/bin/tools/foamVersionCompare 5.4.3 gt 5.5.1
then
echo "5.4.3 IS greater than 5.5.1"
else
echo "5.4.3 is NOT greater than 5.5.1"
fi
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 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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