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main.go
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main.go
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package main
import (
"context"
"fmt"
"net/http"
"os"
"sort"
"strconv"
"strings"
"github.com/google/go-github/v32/github"
"github.com/hashicorp/go-version"
"golang.org/x/oauth2"
)
func main() {
args := parseArgs()
client := github.NewClient(httpClient())
rels, res, err := client.Repositories.ListReleases(context.TODO(), args.owner, args.repo, nil)
if err != nil {
if res.StatusCode == http.StatusNotFound {
fmt.Printf("Repository %s/%s not found\n", args.owner, args.repo) //nolint:forbidigo
os.Exit(1)
}
fmt.Printf("Error: %v", err) //nolint:forbidigo
os.Exit(1)
}
versions := make([]*version.Version, 0, len(rels))
for _, rel := range rels {
ver, err := version.NewVersion(*rel.TagName)
if err != nil {
fmt.Printf("error parsing tag %s\n", *rel.TagName) //nolint:forbidigo
continue
}
if args.major != nil && (ver.Segments()[0] != *args.major || ver.Prerelease() != "") {
continue
}
versions = append(versions, ver)
}
sort.Sort(version.Collection(versions))
if len(versions) == 0 {
fmt.Println("No releases found") //nolint:forbidigo
os.Exit(1)
}
fmt.Println(versions[len(versions)-1]) //nolint:forbidigo
}
func parseArgs() args {
arguments := os.Args[1:]
if len(arguments) == 0 {
help()
}
parts := strings.Split(arguments[0], "/")
if len(parts) != 2 { //nolint:gomnd
help()
}
if len(arguments) == 1 {
return args{
owner: parts[0],
repo: parts[1],
major: nil,
}
}
maj, err := strconv.Atoi(arguments[1])
if err != nil {
help()
}
return args{
owner: parts[0],
repo: parts[1],
major: &maj,
}
}
func help() {
e := fmt.Sprintf("Examples:\t%s %s %d\n", os.Args[0], "helm/helm", 2) //nolint:gomnd
e += fmt.Sprintf("\t\t%s %s", os.Args[0], "starship/starship")
fmt.Printf("Usage:\t\t%s %s [%s]\n%s\n", os.Args[0], "owner/repo", "major", e) //nolint:forbidigo
os.Exit(1)
}
func httpClient() *http.Client {
tok := os.Getenv("GITHUB_ACCESS_TOKEN")
if tok == "" {
return http.DefaultClient
}
ctx := context.Background()
ts := oauth2.StaticTokenSource(
&oauth2.Token{AccessToken: tok}, //nolint:exhaustruct
)
return oauth2.NewClient(ctx, ts)
}
type args struct {
owner string
repo string
major *int
}