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dokku-mongo/tests/bin/at-least-version
2016-08-27 05:13:37 -04:00

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#!/usr/bin/env bash
set -eo pipefail; [[ $TRACE ]] && set -x
semver-parse-into() {
declare VERSION="$1"
local RE='[^0-9]*\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)'
local MAJOR="$(echo "$VERSION" | sed -e "s#$RE#\1#")"
local MINOR="$(echo "$VERSION" | sed -e "s#$RE#\2#")"
local PATCH="$(echo "$VERSION" | sed -e "s#$RE#\3#")"
echo "${MAJOR} ${MINOR} ${PATCH}"
}
main() {
declare MIN_VERSION="$1" CHECK_VERSION="$2"
local IS_AT_LEAST_VERSION=false
local MAJOR_MIN MINOR_MIN PATCH_MIN MAJOR_CHECK MINOR_CHECK PATCH_CHECK PARSED_MIN PARSED_CHECK
PARSED_MIN="$(semver-parse-into "$MIN_VERSION")"
PARSED_CHECK="$(semver-parse-into "$CHECK_VERSION")"
MAJOR_MIN="$(echo "$PARSED_MIN" | cut -d' ' -f1)"
MINOR_MIN="$(echo "$PARSED_MIN" | cut -d' ' -f2)"
PATCH_MIN="$(echo "$PARSED_MIN" | cut -d' ' -f3)"
MAJOR_CHECK="$(echo "$PARSED_CHECK" | cut -d' ' -f1)"
MINOR_CHECK="$(echo "$PARSED_CHECK" | cut -d' ' -f2)"
PATCH_CHECK="$(echo "$PARSED_CHECK" | cut -d' ' -f3)"
if [[ "$MAJOR_CHECK" -gt "$MAJOR_MIN" ]]; then
IS_AT_LEAST_VERSION=true
elif [[ "$MAJOR_CHECK" -eq "$MAJOR_MIN" ]] && [[ "$MINOR_CHECK" -gt "$MINOR_MIN" ]]; then
IS_AT_LEAST_VERSION=true
elif [[ "$MAJOR_CHECK" -eq "$MAJOR_MIN" ]] && [[ "$MINOR_CHECK" -eq "$MINOR_MIN" ]] && [[ "$PATCH_CHECK" -ge "$PATCH_MIN" ]]; then
IS_AT_LEAST_VERSION=true
fi
echo "$IS_AT_LEAST_VERSION"
}
main "$@"