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package main
import (
"errors"
"fmt"
"log"
"os"
"sort"
"github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing"
"github.com/spf13/cobra"
flags "github.com/spf13/pflag"
"github.com/Masterminds/semver/v3"
)
var (
errNoRemoteFound = errors.New("No remotes found")
clonedRepo = &git.Repository{}
localRepo = &git.Repository{}
repoDir string
remoteName string
rootCmd = &cobra.Command{
Use: "semverbump part [major|minor|patch]",
Short: "A tool for bumping semver git tags.",
ValidArgs: []string{"major", "minor", "patch"},
Args: cobra.MatchAll(cobra.ExactArgs(1), cobra.OnlyValidArgs),
Long: `Inspired by the python bumpversion tool.`,
RunE: func(cmd *cobra.Command, args []string) error {
part := args[0]
localRepo, err := git.PlainOpen(repoDir)
if err != nil {
return err
}
// finding tags and last version
tags, err := findTags(localRepo)
if err != nil {
return err
}
lastVersion := latestTag(tags)
if (lastVersion == &semver.Version{}) {
return errors.New("No tags found. Not doing anything")
}
// actual bump
nextVersion := semver.Version{}
switch part {
case "major":
nextVersion = lastVersion.IncMajor()
case "minor":
nextVersion = lastVersion.IncMinor()
case "patch":
nextVersion = lastVersion.IncPatch()
}
fmt.Fprint(cmd.OutOrStdout(), nextVersion)
return err
},
}
)
func latestTag(tags []*semver.Version) *semver.Version {
numTags := len(tags)
if numTags == 0 {
return &semver.Version{}
}
return tags[numTags-1]
}
func findTags(repo *git.Repository) ([]*semver.Version, error) {
repoTagsIter, err := repo.Tags()
if err != nil {
return []*semver.Version{}, err
}
repoTags := []*semver.Version{}
if err := repoTagsIter.ForEach(func(ref *plumbing.Reference) error {
rn := plumbing.ReferenceName(ref.Name())
version, err := semver.NewVersion(rn.Short())
if err != nil {
// not a semver
return nil
}
repoTags = append(repoTags, version)
return nil
}); err != nil {
return []*semver.Version{}, err
}
sort.Sort(semver.Collection(repoTags))
return repoTags, nil
}
func main() {
if err := rootCmd.Execute(); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
func init() {
// global flags
cwd, err := os.Getwd()
if err != nil {
log.Fatal(err)
}
repoDir = *flags.String("repo-dir", cwd, "repo to examine")
remoteName = *flags.String("remote-name", "origin", "remote to search and push to")
}
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