137 lines
3.2 KiB
Go
137 lines
3.2 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package common
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import (
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"fmt"
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"strconv"
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"strings"
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)
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type Version struct {
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version string
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Major int
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Minor int
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Bugfix int
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Meta string
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}
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// NewVersion expects a string in the format:
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// major.minor.bugfix(-meta)
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func NewVersion(version string) (*Version, error) {
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v := Version{
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version: version,
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}
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// Check for meta info
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if strings.Contains(version, "-") {
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tmp := strings.Split(version, "-")
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version = tmp[0]
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v.Meta = tmp[1]
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}
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versions := strings.Split(version, ".")
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if len(versions) != 3 {
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return nil, fmt.Errorf("Passed version is not semver: %s", version)
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}
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var err error
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v.Major, err = strconv.Atoi(versions[0])
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if err != nil {
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return nil, fmt.Errorf("Could not convert major to integer: %s", versions[0])
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}
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v.Minor, err = strconv.Atoi(versions[1])
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if err != nil {
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return nil, fmt.Errorf("Could not convert minor to integer: %s", versions[1])
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}
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v.Bugfix, err = strconv.Atoi(versions[2])
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if err != nil {
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return nil, fmt.Errorf("Could not convert bugfix to integer: %s", versions[2])
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}
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return &v, nil
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}
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func (v *Version) IsMajor(major int) bool {
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return major == v.Major
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}
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// LessThan returns true if v is strictly smaller than v1. When comparing, the major,
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// minor, bugfix and pre-release numbers are compared in order.
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func (v *Version) LessThanOrEqual(withMeta bool, v1 *Version) bool {
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if withMeta && v.version == v1.version {
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return true
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}
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if v.Major < v1.Major {
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return true
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}
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if v.Major == v1.Major {
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if v.Minor < v1.Minor {
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return true
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}
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if v.Minor == v1.Minor {
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if v.Bugfix < v1.Bugfix {
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return true
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}
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if v.Bugfix == v1.Bugfix {
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if withMeta {
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return v.metaIsLessThanOrEqual(v1)
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} else {
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return true
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}
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}
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}
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}
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return false
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}
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// LessThan returns true if v is strictly smaller than v1. When comparing, the major,
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// minor and bugfix numbers are compared in order. The meta part is not taken into account.
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func (v *Version) LessThan(v1 *Version) bool {
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if v.Major < v1.Major {
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return true
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} else if v.Major == v1.Major {
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if v.Minor < v1.Minor {
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return true
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} else if v.Minor == v1.Minor {
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if v.Bugfix < v1.Bugfix {
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return true
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}
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}
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}
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return false
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}
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func (v *Version) String() string {
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return v.version
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}
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func (v *Version) metaIsLessThanOrEqual(v1 *Version) bool {
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if v.Meta == "" && v1.Meta == "" {
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return true
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}
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if v.Meta == "" {
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return false
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}
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if v1.Meta == "" {
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return true
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}
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return v.Meta <= v1.Meta
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}
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