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package main
import (
"errors"
"fmt"
"log"
"os"
"sort"
"strconv"
"strings"
"github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"github.com/Masterminds/semver/v3"
)
type FmtPart string
var (
BumpInt FmtPart = "$BumpInt"
KeyArg FmtPart = "$KeyArg"
)
type preReleaseVersion struct {
Fmt []string
KeyArgs map[string]string
v *semver.Version
versionPart string
}
// incPreRelease bumps a prerelease
// if no existing pre-release render
// if exists find the bump part
func (prf *preReleaseVersion) incPreRelease() (semver.Version, error) {
currentPreRelease := prf.v.Prerelease()
newPreRelease := currentPreRelease == ""
currentPreReleaseParts := strings.Split(currentPreRelease, ".")
newPreReleaseParts := []string{}
// Loop over each of the format parts
// Align the output to match the output
for idx, fmtPart := range prf.Fmt {
partArgs := strings.Split(fmtPart, " ")
switch partArgs[0] {
case string(BumpInt):
// Handle a new pre-release
if newPreRelease {
newPreReleaseParts = append(newPreReleaseParts, "0")
continue
}
// bump int
// current int ++
currentVerStrPart := currentPreReleaseParts[idx]
currentVerPart, err := strconv.Atoi(currentVerStrPart)
if err != nil {
return semver.Version{}, err
}
newPreReleaseParts = append(newPreReleaseParts, strconv.Itoa(currentVerPart+1))
case string(KeyArg):
// check len
value, ok := prf.KeyArgs[partArgs[1]]
if !ok {
log.Fatalf("%s not found", partArgs[1])
return semver.Version{}, errors.New("KeyArg not found")
}
newPreReleaseParts = append(newPreReleaseParts, value)
default:
newPreReleaseParts = append(newPreReleaseParts, partArgs[0])
}
}
nextVersion := semver.Version{}
preReleaseStr := strings.Join(newPreReleaseParts, ".")
// When we are _JUST_ bumping the prerelease
if !newPreRelease {
newVersion, err := prf.v.SetPrerelease(preReleaseStr)
if err != nil {
log.Fatal(err)
return semver.Version{}, err
}
return newVersion, nil
}
switch prf.versionPart {
case "major":
nextVersion = prf.v.IncMajor()
case "minor":
nextVersion = prf.v.IncMinor()
case "patch":
nextVersion = prf.v.IncPatch()
}
newVersion, err := nextVersion.SetPrerelease(preReleaseStr)
if err != nil {
log.Fatal(err)
return semver.Version{}, err
}
return newVersion, nil
}
var (
errNoRemoteFound = errors.New("No remotes found")
clonedRepo = &git.Repository{}
localRepo = &git.Repository{}
repoDir string
remoteName string
preReleaseFmtArgs map[string]string = make(map[string]string)
preRelease bool
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 bump2version tool.`,
RunE: func(cmd *cobra.Command, argz []string) error {
part := argz[0]
preRelease := viper.GetBool("prerelease")
// remoteName := viper.GetString("remote-name")
repoDir := viper.GetString("repo-dir")
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")
}
versionPart := ""
if preRelease {
versionPart = part
part = "prerelease"
}
// actual bump
nextVersion := semver.Version{}
switch part {
case "major":
nextVersion = lastVersion.IncMajor()
case "minor":
nextVersion = lastVersion.IncMinor()
case "patch":
nextVersion = lastVersion.IncPatch()
case "prerelease":
preRelVersion := preReleaseVersion{
[]string{"PR", "$KeyArg PR_NUM"},
preReleaseFmtArgs,
lastVersion,
versionPart,
}
nextVersion, err = preRelVersion.incPreRelease()
if err != nil {
return err
}
}
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
viper.SetConfigName(".version")
viper.SetConfigType("toml")
viper.AddConfigPath(".")
cwd := ""
err := viper.ReadInConfig() // Find and read the config file
if err != nil { // Handle errors reading the config file
fmt.Println(err)
cwd, err = os.Getwd()
}
if err != nil {
log.Fatal(err)
}
rootCmd.PersistentFlags().BoolVarP(&preRelease, "prerelease", "p", false, "create a prerelease tag for the (major|minor|patch)")
rootCmd.PersistentFlags().String("prerelease-fmt", "PR $KeyArg PR_NUM $BumpInt", "The format string for prerelease versions")
rootCmd.PersistentFlags().StringToStringVarP(&preReleaseFmtArgs, "key-args", "k", nil, "key=arg for the fmt string")
repoDir = *rootCmd.PersistentFlags().String("repo-dir", cwd, "repo to examine")
remoteName = *rootCmd.PersistentFlags().String("remote-name", "origin", "remote to search and push to")
viper.BindPFlags(rootCmd.PersistentFlags())
}
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