| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| package tools |
| |
| import ( |
| "flag" |
| "fmt" |
| |
| "github.com/Masterminds/semver" |
| ) |
| |
| func needUpdateTool(args []string) error { |
| |
| flag := flag.NewFlagSet("needupdate", flag.ExitOnError) |
| flag.Usage = func() { |
| fmt.Println(`Check if a semver version A > semver version B. |
| Exits with 0 if greater, 1 otherwise. |
| |
| Usage: |
| ops -needupdate <versionA> <versionB> |
| |
| Options:`) |
| flag.PrintDefaults() |
| } |
| |
| helpFlag := flag.Bool("help", false, "Print this help") |
| |
| err := flag.Parse(args) |
| if err != nil { |
| return err |
| } |
| |
| if *helpFlag { |
| flag.Usage() |
| return nil |
| } |
| |
| if flag.NArg() != 2 { |
| flag.Usage() |
| return fmt.Errorf("needupdate requires two arguments") |
| } |
| |
| a := flag.Arg(0) |
| b := flag.Arg(1) |
| |
| versionA, err := semver.NewVersion(a) |
| if err != nil { |
| return fmt.Errorf("invalid semantic version: %s", b) |
| } |
| |
| versionB, err := semver.NewVersion(b) |
| if err != nil { |
| return fmt.Errorf("invalid semantic version: %s", b) |
| } |
| |
| if versionA.GreaterThan(versionB) { |
| return nil |
| } |
| |
| return fmt.Errorf("%s is not greater than %s", a, b) |
| } |